vobfus | e75f38bfcd5cb806c29a987fefbf5c61d2f5f6cbc66ab5fe7c96b2ba2b2d7331

General

Target
VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Size 212KB
Sample251103-sd2g2ssmhm
SHA256 7f9567c585de5e70746c72e6c6fb50e04babb7560d4b3a5b9d29bd8f5863af12
MD5 fdb8f0de07c164fe348d25cba2eebfe8
SHA1 7d4de3c9c151d813783ee4883004ef2fb8ddf182
SHA512 458d03533a2361dcfc0d6d0ca1010e149d3b4d27f500f3ef4e7e1597fe5981eb0d09e9130ce5019a2c1e484b7774d54c9ca41eb3d66e706f62f4166937a686f6
SSDEEP 3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1:Xo/BHng5HaVG4G/1z+QVMbg1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery vobfus persistence worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus
Vobfus family
vobfus

Adds policy Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Key created	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	AG58FPQON.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Key created	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	AG58FPQON.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	AG58FPQON.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-503569783-3534512106-765729973-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AG58FPQON.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4800	AG58FPQON.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4204	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4204	VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
4800	AG58FPQON.exe
4800	AG58FPQON.exe

C:\Users\Admin\AppData\Local\Temp\VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_fdb8f0de07c164fe348d25cba2eebfe8.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:4204

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
1⤵
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4800

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

AG58FPQON.exe

Path C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
Size 212KB
SHA256 25422aef05f07314a3436aabc4aea80d7480145fefadfca97b8e377dfc92612d
MD5 316a8df3d898b8a4e6acedfcd163aeac
SHA1 079af2f148c3a2de9c60177e818406f323aea8df
SHA512 84342331bded33d5cb2df3d0544b055642b1a8c7a370f204b0ec3bfbd4783a4a8594e5127bc6fce2b0c47199bf5228d1aabfd1e2481eed75a039ade6b82ca06c
SSDEEP 3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1Q:Xo/BHng5HaVG4G/1z+QVMbg1Q
MD5 SHA1 SHA512 SSDEEP

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memory/4204-0-0x0000000000400000-0x0000000000434000-memory.dmp

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memory/4204-15-0x0000000000400000-0x0000000000434000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads