Analysis by: Jennifer Gumban
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 117,313 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 09 Jun 2015

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following files:

  • %AppDataLocal%\NVIDIA Corporation\Updates\NvdUpd.exe

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It creates the following folders:

  • %AppDataLocal%\NVIDIA Corporation

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
NvUpdSrv = "%AppDataLocal%\NVIDIA Corporation\Updates\NvdUpd.exe"

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CURRENT_USER\Software\NVIDIA Corporation\
Global\nvUpdSrv
GUID = "{GUID}"

HKEY_CURRENT_USER\Software\NVIDIA Corporation\
Global\nvUpdSrv
value = "{numbers}"

Other Details

This Trojan connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.227.13:33879
  • {BLOCKED}.{BLOCKED}.87.184:49205
  • {BLOCKED}.{BLOCKED}.205.155:22887
  • {BLOCKED}.{BLOCKED}.107.132:19796
  • {BLOCKED}.{BLOCKED}.59.146:45297
  • {BLOCKED}.{BLOCKED}.84.82:35971
  • {BLOCKED}.{BLOCKED}.175.120:11754
  • {BLOCKED}.{BLOCKED}.66.66:45297
  • {BLOCKED}.{BLOCKED}.237.81:19413
  • {BLOCKED}.{BLOCKED}.37.172:54091
  • {BLOCKED}.{BLOCKED}.138.226:31973
  • {BLOCKED}.{BLOCKED}.89.52:16796
  • {BLOCKED}.{BLOCKED}.97.114:49891
  • {BLOCKED}.{BLOCKED}.37.210:49994
  • {BLOCKED}.{BLOCKED}.215.209:15551
  • {BLOCKED}.{BLOCKED}.80.162:14066
  • {BLOCKED}.{BLOCKED}.78.26:52112
  • {BLOCKED}.{BLOCKED}.216.108:51376
  • {BLOCKED}.{BLOCKED}.22.66:22740
  • {BLOCKED}.{BLOCKED}.175.117:51447
  • {BLOCKED}.{BLOCKED}.133.248:46856
  • {BLOCKED}.{BLOCKED}.209.137:37127
  • {BLOCKED}.{BLOCKED}.56.90:10703
  • {BLOCKED}.{BLOCKED}.189.121:26195
  • {BLOCKED}.{BLOCKED}.118.90:35535
  • {BLOCKED}.{BLOCKED}.195.47:59899
  • {BLOCKED}.{BLOCKED}.205.163:25549
  • {BLOCKED}.{BLOCKED}.58.68:23480
  • {BLOCKED}.{BLOCKED}.144.91:36139
  • {BLOCKED}.{BLOCKED}.241.7:37399
  • {BLOCKED}.{BLOCKED}.52.26:23097
  • {BLOCKED}.{BLOCKED}.240.170:25338
  • {BLOCKED}.{BLOCKED}.48.2:52112
  • {BLOCKED}.{BLOCKED}.113.145:15871
  • {BLOCKED}.{BLOCKED}.200.153:17513
  • {BLOCKED}.{BLOCKED}.208.18:16493
  • {BLOCKED}.{BLOCKED}.218.26:22237
  • {BLOCKED}.{BLOCKED}.209.207:53127
  • {BLOCKED}.{BLOCKED}.1.99:27501
  • {BLOCKED}.{BLOCKED}.55.90:45297
  • {BLOCKED}.{BLOCKED}.223.12:49116
  • {BLOCKED}.{BLOCKED}.110.162:37174
  • {BLOCKED}.{BLOCKED}.59.2:26195
  • {BLOCKED}.{BLOCKED}.149.204:39836
  • {BLOCKED}.{BLOCKED}.106.186:45297
  • {BLOCKED}.{BLOCKED}.103.43:58207
  • {BLOCKED}.{BLOCKED}.242.226:34290
  • {BLOCKED}.{BLOCKED}.120.18:39394
  • {BLOCKED}.{BLOCKED}.214.20:12772
  • {BLOCKED}.{BLOCKED}.188.250:48439
  • {BLOCKED}.{BLOCKED}.59.99:30577
  • {BLOCKED}.{BLOCKED}.96.120:31885
  • {BLOCKED}.{BLOCKED}.180.243:33879
  • {BLOCKED}.{BLOCKED}.64.85:19753
  • {BLOCKED}.{BLOCKED}.80.55:14343
  • {BLOCKED}.{BLOCKED}.67.170:53872
  • {BLOCKED}.{BLOCKED}.169.2:48146
  • {BLOCKED}.{BLOCKED}.171.130:13586
  • {BLOCKED}.{BLOCKED}.113.81:10934
  • {BLOCKED}.{BLOCKED}.233.180:29380
  • {BLOCKED}.{BLOCKED}.163.194:60098
  • {BLOCKED}.{BLOCKED}.77.246:51841
  • {BLOCKED}.{BLOCKED}.90.234:11982
  • {BLOCKED}.{BLOCKED}.119.1:35535
  • {BLOCKED}.{BLOCKED}.77.28:27190
  • {BLOCKED}.{BLOCKED}.188.2:48105
  • {BLOCKED}.{BLOCKED}.80.46:25127
  • {BLOCKED}.{BLOCKED}.148.43:49126
  • {BLOCKED}.{BLOCKED}.223.11:38107
  • {BLOCKED}.{BLOCKED}.192.230:26666
  • {BLOCKED}.{BLOCKED}.70.56:38271
  • {BLOCKED}.{BLOCKED}.20.202:36102
  • {BLOCKED}.{BLOCKED}.253.1:22357
  • {BLOCKED}.{BLOCKED}.154.220:53818
  • {BLOCKED}.{BLOCKED}.56.202:45297
  • {BLOCKED}.{BLOCKED}.12.149:57136
  • {BLOCKED}.{BLOCKED}.231.223:43992
  • {BLOCKED}.{BLOCKED}.20.226:54127
  • {BLOCKED}.{BLOCKED}.214.110:26338
  • {BLOCKED}.{BLOCKED}.168.90:39862
  • {BLOCKED}.{BLOCKED}.28.66:21074
  • {BLOCKED}.{BLOCKED}.118.22:48439
  • {BLOCKED}.{BLOCKED}.180.232:53872
  • {BLOCKED}.{BLOCKED}.2.212:28644
  • {BLOCKED}.{BLOCKED}.96.102:37174
  • {BLOCKED}.{BLOCKED}.36.128:15206
  • {BLOCKED}.{BLOCKED}.97.176:12448
  • {BLOCKED}.{BLOCKED}.146.98:25127
  • {BLOCKED}.{BLOCKED}.177.4:18532
  • {BLOCKED}.{BLOCKED}.42.98:27042
  • {BLOCKED}.{BLOCKED}.153.118:27738
  • {BLOCKED}.{BLOCKED}.31.250:38102
  • {BLOCKED}.{BLOCKED}.167.242:15745
  • {BLOCKED}.{BLOCKED}.85.118:49126
  • {BLOCKED}.{BLOCKED}.169.249:33376
  • {BLOCKED}.{BLOCKED}.98.62:53127
  • {BLOCKED}.{BLOCKED}.97.157:58186
  • {BLOCKED}.{BLOCKED}.41.63:49996
  • {BLOCKED}.{BLOCKED}.138.200:18150
  • {BLOCKED}.{BLOCKED}.45.29:22237
  • {BLOCKED}.{BLOCKED}.40.160:45872
  • {BLOCKED}.{BLOCKED}.124.202:38109
  • {BLOCKED}.{BLOCKED}.107.132
  • {BLOCKED}.{BLOCKED}.59.146
  • {BLOCKED}.{BLOCKED}.84.82
  • {BLOCKED}.{BLOCKED}.175.120
  • {BLOCKED}.{BLOCKED}.66.66
  • {BLOCKED}.{BLOCKED}.237.81
  • {BLOCKED}.{BLOCKED}.37.172
  • {BLOCKED}.{BLOCKED}.138.226
  • {BLOCKED}.{BLOCKED}.89.52
  • {BLOCKED}.{BLOCKED}.97.114
  • {BLOCKED}.{BLOCKED}.37.210
  • {BLOCKED}.{BLOCKED}.215.209
  • {BLOCKED}.{BLOCKED}.80.162
  • {BLOCKED}.{BLOCKED}.78.26
  • {BLOCKED}.{BLOCKED}.216.108
  • {BLOCKED}.{BLOCKED}.22.66
  • {BLOCKED}.{BLOCKED}.175.117
  • {BLOCKED}.{BLOCKED}.133.248
  • {BLOCKED}.{BLOCKED}.209.137
  • {BLOCKED}.{BLOCKED}.56.90
  • {BLOCKED}.{BLOCKED}.189.121
  • {BLOCKED}.{BLOCKED}.118.90
  • {BLOCKED}.{BLOCKED}.195.47
  • {BLOCKED}.{BLOCKED}.205.163
  • {BLOCKED}.{BLOCKED}.58.68
  • {BLOCKED}.{BLOCKED}.144.91
  • {BLOCKED}.{BLOCKED}.241.7
  • {BLOCKED}.{BLOCKED}.52.26
  • {BLOCKED}.{BLOCKED}.240.170
  • {BLOCKED}.{BLOCKED}.48.2
  • {BLOCKED}.{BLOCKED}.113.145
  • {BLOCKED}.{BLOCKED}.200.153
  • {BLOCKED}.{BLOCKED}.208.18
  • {BLOCKED}.{BLOCKED}.218.26
  • {BLOCKED}.{BLOCKED}.209.207
  • {BLOCKED}.{BLOCKED}.1.99
  • {BLOCKED}.{BLOCKED}.55.90
  • {BLOCKED}.{BLOCKED}.223.12
  • {BLOCKED}.{BLOCKED}.110.162
  • {BLOCKED}.{BLOCKED}.59.2
  • {BLOCKED}.{BLOCKED}.149.204
  • {BLOCKED}.{BLOCKED}.106.186
  • {BLOCKED}.{BLOCKED}.103.43
  • {BLOCKED}.{BLOCKED}.242.226
  • {BLOCKED}.{BLOCKED}.120.18
  • {BLOCKED}.{BLOCKED}.214.20
  • {BLOCKED}.{BLOCKED}.188.250
  • {BLOCKED}.{BLOCKED}.59.99
  • {BLOCKED}.{BLOCKED}.96.120
  • {BLOCKED}1{BLOCKED}.180.243
  • {BLOCKED}.{BLOCKED}.64.85
  • {BLOCKED}.{BLOCKED}.80.55
  • {BLOCKED}.{BLOCKED}.67.170
  • {BLOCKED}.{BLOCKED}.169.2
  • {BLOCKED}.{BLOCKED}.171.130
  • {BLOCKED}.{BLOCKED}.113.81
  • {BLOCKED}.{BLOCKED}.233.180
  • {BLOCKED}.{BLOCKED}.163.194
  • {BLOCKED}.{BLOCKED}.77.246
  • {BLOCKED}.{BLOCKED}.90.234
  • {BLOCKED}.{BLOCKED}.119.1
  • {BLOCKED}.{BLOCKED}.77.28
  • {BLOCKED}.{BLOCKED}.188.2
  • {BLOCKED}.{BLOCKED}.80.46
  • {BLOCKED}.{BLOCKED}.148.43
  • {BLOCKED}.{BLOCKED}.223.11
  • {BLOCKED}.{BLOCKED}.192.230
  • {BLOCKED}.{BLOCKED}.70.56
  • {BLOCKED}.{BLOCKED}.20.202
  • {BLOCKED}.{BLOCKED}.253.1
  • {BLOCKED}.{BLOCKED}.154.220
  • {BLOCKED}.{BLOCKED}.56.202
  • {BLOCKED}.{BLOCKED}.12.149
  • {BLOCKED}.{BLOCKED}.231.223
  • {BLOCKED}.{BLOCKED}.20.226
  • {BLOCKED}.{BLOCKED}.214.110
  • {BLOCKED}.{BLOCKED}.168.90
  • {BLOCKED}.{BLOCKED}.28.66
  • {BLOCKED}.{BLOCKED}.118.22
  • {BLOCKED}.{BLOCKED}.180.232
  • {BLOCKED}.{BLOCKED}.2.212
  • {BLOCKED}.{BLOCKED}.96.102
  • {BLOCKED}.{BLOCKED}.36.128
  • {BLOCKED}.{BLOCKED}.97.176
  • {BLOCKED}.{BLOCKED}.146.98
  • {BLOCKED}.{BLOCKED}.177.4
  • {BLOCKED}.{BLOCKED}.42.98
  • {BLOCKED}.{BLOCKED}.153.118
  • {BLOCKED}.{BLOCKED}.31.250
  • {BLOCKED}.{BLOCKED}.167.242
  • {BLOCKED}.{BLOCKED}.85.118
  • {BLOCKED}.{BLOCKED}.169.249
  • {BLOCKED}.{BLOCKED}.98.62
  • {BLOCKED}.{BLOCKED}.97.157
  • {BLOCKED}.{BLOCKED}.41.63
  • {BLOCKED}.{BLOCKED}.138.200
  • {BLOCKED}.{BLOCKED}.45.29
  • {BLOCKED}.{BLOCKED}.36.128:47933
  • {BLOCKED}.{BLOCKED}.36.128:15206
  • {ip}/stat?uid={number}&downlink={number}&uplink={number}&id={value}&statpass=bpass&version={number}&features={number}&guid={guid}&comment={number}&p={number}&s={value}

  SOLUTION

Minimum Scan Engine: 9.750
FIRST VSAPI PATTERN FILE: 11.720.04
FIRST VSAPI PATTERN DATE: 09 Jun 2015
VSAPI OPR PATTERN File: 11.721.00
VSAPI OPR PATTERN Date: 10 Jun 2015

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.  
  • %AppDataLocal%\NVIDIA Corporation

Step 5

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • NvUpdSrv = "%AppDataLocal%\NVIDIA Corporation\Updates\NvdUpd.exe"
  • In HKEY_CURRENT_USER\Software\NVIDIA Corporation\Global\nvUpdSrv
    • GUID = "{GUID}"
  • In HKEY_CURRENT_USER\Software\NVIDIA Corporation\Global\nvUpdSrv
    • value = "{numbers}"

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_GLUPTEBA.JV. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 7

Scan your computer with your Trend Micro product to delete files detected as TROJ_GLUPTEBA.JV. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


Did this description help? Tell us how we did.