a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9

Analysis

max time kernel
150s
max time network
127s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/09/2026, 08:42

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General

Target
jaffacakes118_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe
Size 64KB
Sample260924-kmbc8ahg86
SHA256 a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9
MD5 3c6a20c424eee7568a14ef6d7c1e01dc
SHA1 be0763bf7bb576fccb9503f1f808e5b6718f2765
SHA512 6ff95a5b5eb82cb4bdd392d95281c741aa34c978b3469d26a3320d4866bc0344e9d7e8af770d94210ee3f78d72876e833cc9ed1c495aa47e2bf8cfc72c7409a1
SSDEEP 1536:aueIEtRo9MxdodeWqGEo6IBfWLYYWWP3nXni+Gfqwl:auentRo9MxdodeWqGEo/ax93nXnefq6
TLSH
T1F4532943EA9641E3C7157A7016AE9B39C173A52F87056BFF4B64DF1D9132182EC3928C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2432	vbrun.exe

Adds Run key to start application 2 TTPs 1 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\VB_run = "C:\\Windows\\vbrun.exe"	jaffacakes118_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\vbrun.exe	jaffacakes118_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2684	2432	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 2 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_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbrun.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2432	vbrun.exe
2432	vbrun.exe
2432	vbrun.exe
2432	vbrun.exe

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a40a794b1da8435e29399af1d9b4b62e1a2efc680f813ed853c77847abfaeef9.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4284

C:\Windows\vbrun.exe
C:\Windows\vbrun.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 2292
  2⤵
  - Program crash
  PID:2684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2432 -ip 2432
1⤵
PID:3136

Network

MITRE ATT&CK Enterprise v16

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

vbrun.exe

Path C:\Windows\vbrun.exe
Size 44KB
SHA256 9e1b946825a7b5b6ba138dd38508434c2fa59c40e6c69ecb3d1a61c0b6481cf4
MD5 3e941f8673e6d7389155a51cee068d46
SHA1 9c476394408dfba385a8965bc26a360db20f8525
SHA512 b442b3a7005cd2f5db294ba72c2de3f24ac73294edeba8d4b39d60d26bad0760977398f5439ad73c7c1dcebd4ef04ca9e96babd46ff06383ede8dd02fde5b892
SSDEEP 768:wEtEoTRo9MxdodeWqGYNoDGIBE0+Z6dWLYY54WP3nXni+QRfqwlN:wEtRo9MxdodeWqGEo6IBfWLYYWWP3nX0
TLSH
T10B130A43E9D642E3D711BA7016AEAB39C073A52F8715ABFF4B64DF1D5132181EC2928C
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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