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
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-1-5-21-3063565911-2056067323-3330884624-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	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-1-5-21-3063565911-2056067323-3330884624-1000\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
behavioral1/memory/2644-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0007000000012117-7.dat	upx
behavioral1/memory/2644-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2644-11-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2644-82-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2644-225-0x0000000000400000-0x0000000000437000-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	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
2644	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2644	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2644	JaffaCakes118_ceffc24c49b087e4ef5aaa2295cbafbd.exe
2644	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:2644

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
4ac185e37562be15f53451948e745df2

SHA1
ae2c40fa96cc85dfda1545c1a433f9d107fa9362

SHA256
ad2298dda968a052bc8646f8a77a9c8a928c9584496362d0ba959ab63fe9652e

SHA512
e037fea9d2fa5e46a1f1354641927602a284b90b045d3ee4f5ea2edd2a221e902a91f0eb634f53d280f8b5df4a3d80380417b42c7d7dacf3f4a2a5ab0e42927a

Download Submit
memory/2644-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2644-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2644-11-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2644-82-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2644-225-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads