vobfus | 0504100b25276f774f0ff7178b5e926eb56b50b82622c7379e7cfbb80d1ccaa3

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-09-2024 14:06

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General

Target

cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Size

764KB
MD5

cfb53796cdb6a32fa8ac714456377d81
SHA1

ab8bba28838ca7f325ac4e0c00540c47a44d36c5
SHA256

0504100b25276f774f0ff7178b5e926eb56b50b82622c7379e7cfbb80d1ccaa3
SHA512

657531ad98f0264fe6d15bbd7007817f15c6b19a21900c3abcddd17ccd63341be5c40f56b22b31ad0d0baf5a8d48314180a9053c269867bcd736453cefeef9f7
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1kHjk+0oLnWFnd:Xo/BHng5HaVG4G/1z+QVMbg1Eoh

Score

10^/10

vobfus discovery persistence 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	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.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"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.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	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.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
3028	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3028	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3028	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
3028	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.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:3028

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
764KB

MD5
2140aeaaa704addcebaab0abdf9525c2

SHA1
b03023303706acfddd74eb90c23770f19a6fa999

SHA256
086bef822f90c13001658ab1b78695380f1edc68313af5429d460989c280c3c6

SHA512
5d67493043169fc06594e314c26e1f533eb8e20da54f9dc3d7f56933f19668f135ce628116c7d0c7df8e97d7995ccb2d839a0caf395760e843d3a7c8a904a5c7

Download Submit
memory/3028-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3028-24-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3028-231-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads