vobfus | 43e38b757549f15e6a96dd9014b8c4f3d7b82cdffcffb2ca395dcf490c613205

Analysis

max time kernel
149s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 12:31

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General

Target

JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Size

204KB
MD5

553545fc8860fc233f6e2d7781afc570
SHA1

d7754130fc59800e68cc22b5b6c93bc2a9cf95a8
SHA256

43e38b757549f15e6a96dd9014b8c4f3d7b82cdffcffb2ca395dcf490c613205
SHA512

c9bfc5c199c5a0cfd63900894eb628f942d063de558e90b6e220142bde7fcd8ea9c1cb7c9eb3ec3605758734b09249a3bba062b3ccd4c5ce122f4468ea9d58c0
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1:Xo/BHng5HaVG4G/1z+QVMbg1

Score

10^/10

vobfus discovery 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 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_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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
2916	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2916	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2916	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
2916	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
204KB

MD5
a54174f15b267403c9d09b84db99a726

SHA1
a9c33962854535f34a3fd44838c6be96468822e4

SHA256
e55aa4ec96bf651882c1a3e9c765c63cbd7ac4d2a10379a3c66998b24924a8c2

SHA512
1051050244efefdfdd312398352ca86be2962227ead54dcddd9911f4e4936c1a1d17a1aa639d7b1bc820582b1158f4070de0d873b18921bbb242774447c41feb

Download Submit
memory/2916-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2916-17-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2916-224-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads