vobfus | 65a9b7f902db4e981b96b2c019f72c113978b2bcd2e763504f2b5551a236eea9

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
07/01/2025, 00:39

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General

Target

JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
Size

204KB
MD5

4389cbc3e4d7afb48dff8ad2d3e376a5
SHA1

dcd4ece61525c366f1a491fad2bcbb61a4e6cbed
SHA256

65a9b7f902db4e981b96b2c019f72c113978b2bcd2e763504f2b5551a236eea9
SHA512

a2033cb2fd05bf1ad3eb5307902cfa5a76b889de456ca6aeac1d04b821cab831aefd232e9c106c5215167c2f0f93cf06795daf30cc1ee97530ac5f8fbef07757
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_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.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_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.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_4389cbc3e4d7afb48dff8ad2d3e376a5.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
2316	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2316	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2316	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
2316	JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4389cbc3e4d7afb48dff8ad2d3e376a5.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:2316

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
d9adc1b05504bbf5cb231e52679f1c8c

SHA1
94d4afe3758392d99fd5f098f31e0671ee42f56c

SHA256
7528a21c0312992ee6062c5c52503cd729d5793e22678006e102f3069551b6ae

SHA512
fce4aa93e3e8fe6e2604eb6c56931f2d1d253dcff74af481ae548a1433525af1ccf7c9a6890f5147307ee2199c44e65b379c25c150cb8fd772ab4477952d7acd

Download Submit
memory/2316-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2316-17-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2316-231-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads