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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
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-1-5-21-2172136094-3310281978-782691160-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1820-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x00070000000120fb-7.dat	upx
behavioral1/memory/1820-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1820-18-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1820-232-0x0000000000400000-0x0000000000437000-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-1-5-21-2172136094-3310281978-782691160-1000\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	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1820	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1820	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1820	60991663d14ad6c7905823301bdfc67ef632e37046db82acbfda4a91c7364484.exe
1820	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:1820

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
82f90d2427ec45e60a144bf70e6b1a2d

SHA1
48df8558230ce9b2ff2a1e9af2b036e658569eb3

SHA256
291a5cbc3f2e7fff1458d65c8de1cc20d13e10305252af2123f869d05e3f1658

SHA512
a2d74ee2d9c8db96e3f09d88cc91d7fe79fb94faaa3e4155d2fda8181def64da8b5a80f30a86b895e13ad5c83fae62f12277f0aac3f97c277e45fad84e307c12

Download Submit
memory/1820-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1820-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1820-18-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1820-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads