vobfus | eaad1f637dd4542ef385b9eaf37299013051dd99decf41e1c396c07f1a73b030

General

Target

JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Size

224KB
MD5

ceffc24c49b087e4ef5aaa2295cbafbd
SHA1

caf8e8cdcd3888cd7a696a5c695dd01e9eea6754
SHA256

eaad1f637dd4542ef385b9eaf37299013051dd99decf41e1c396c07f1a73b030
SHA512

34f5b254cc3b0e7f88825f9d70e7830db69b7bb413ae1037054dcff9c70621b93a02548e2bd490f97b94001895ea4b555c58661d6bf870af83c8e9b43eee4253
SSDEEP

3072:vHjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1jm0+J:Po/BHng5HaVG4G/1z+QVMbg1jv+

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
Vobfus family
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	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

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"	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4060-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x000b000000023b97-7.dat	upx
behavioral2/memory/4060-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4060-11-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4060-82-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4060-225-0x0000000000400000-0x0000000000437000-memory.dmp	upx

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	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	12	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4060	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4060	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4060	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
4060	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.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:4060

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
224KB

MD5
fd7105b3e37492b1a4f601cefc23eb52

SHA1
3e72da65314a357bec59f8d26b2441bec50d687a

SHA256
221368fe053b21797f397b8e990ca182bd33a3af9f6f7bf66a6926af04e437b0

SHA512
a2096c2d699d044cdb133beb5055c5e26c4b5ade7244850591917d59e749c418f8cc15a256f027cc075da63f8e53fb15a5c7df1ab8b5025a6247758bb3dcdfed

Download Submit
memory/4060-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4060-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4060-11-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4060-82-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4060-225-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads