vobfus | 7355056566dd79f7b669bd3a92dcc466fe7174bf5b37d59895eefb565b4cf8d2

Analysis

max time kernel
149s
max time network
143s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07/01/2025, 06:28

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General

Target

JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe
Size

204KB
MD5

52bb92c78026e3abd99329fcaea4744a
SHA1

cb4b6ef89751747a4c7a15ed4b0f32b6fbe9f3c7
SHA256

7355056566dd79f7b669bd3a92dcc466fe7174bf5b37d59895eefb565b4cf8d2
SHA512

175bc18e713f4ceac035621a518b7b8a29c7ffd682cb7d9d08cd4d60627151c913aab2f2bad88badc3f23c43202e5cb9560750cc302d83c16f51a545b8184231
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_52bb92c78026e3abd99329fcaea4744a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.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_52bb92c78026e3abd99329fcaea4744a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.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_52bb92c78026e3abd99329fcaea4744a.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
2388	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2388	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2388	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe
2388	JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52bb92c78026e3abd99329fcaea4744a.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:2388

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
e95bb40167204da40c360d3fa4b1551e

SHA1
ce0fc61f69f9bd1537834bb47bd3864239ab20fd

SHA256
fcd4db83abdee156bfebdba4e3565fef3983b0138de57617565b12907990c73a

SHA512
397d6f774ebb6e31498ad502e0be524a04fc3f134982eac1890e64514154957aa360894031287857cad70a07d8bd0dc651d0c35daf1770b4ea0ee6d46f991146

Download Submit
memory/2388-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2388-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2388-81-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2388-224-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads