vobfus | d0b47a1d3a5ed8d7719df4bf3d1341fed29071af976245e9f70551215be2a77d

General

Target

60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Size

3.6MB
MD5

21abada9dc9df14aee6ab9f7dd9ab6b5
SHA1

cc58c6c78bb3c2eaafa7a7a1d26c1c8fc610ff6d
SHA256

60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484
SHA512

17f1831702ace1d19781231678328b5d092d5c0863e174cc46fcdb877adf9067132498470c999682a449abea2b9fea3bedc3185e4f5b11c9f3c8f4f3e8c9d697
SSDEEP

98304:Vbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb5:v

Score

10^/10

vobfus discovery persistence upx worm

Malware Config

Signatures

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

Adds policy 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\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4756-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x0009000000023467-7.dat	upx
behavioral2/memory/4756-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4756-67-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4756-281-0x0000000000400000-0x0000000000437000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 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"	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	28	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	64	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4756	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4756	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4756	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
4756	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

C:\Users\Admin\AppData\Local\Temp\60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
"C:\Users\Admin\AppData\Local\Temp\60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:4756

Network

MITRE ATT&CK Enterprise v15

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

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
3.6MB

MD5
e995de2b57138c9355705c2857a2eb47

SHA1
8e762be18ccd0886bf7647029dba0f2273cfaf8f

SHA256
624ddd61f6c0fe6a99e19fff0bfb83e84c0b7b3202c3f8d9761b7f3e1d84eeb4

SHA512
d85e482b0d322393f41fd7f2ff84c44588489d585c98b6a74317256eb41dccc281247440546ba29c7a5a2fdaec6aeb78c80532cd96ceeed0275783891bdaa874

Download Submit
memory/4756-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4756-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4756-67-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4756-281-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads