a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a

Analysis

max time kernel
150s
max time network
125s
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, 04:28

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General

Target
jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe
Size 48KB
Sample260924-e3nets1w6j
SHA256 a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a
MD5 24e9621d0bb3e11ce06749593b11b1ac
SHA1 2ce59eebd1657abdc5021497ff25a86ba6affb95
SHA512 754d46e0899e01b4a501d1c0d3f38bedcb3f3030f3bad1c7dd5cce75434f518a767d61052f91c31eb295c81bb094f85e54204c2ece54ad17138cd8d9fa0386de
SSDEEP 768:WU1LRP0gVDqJn75dLqDKCC0u4X+Zat5mL:WUpOumJnh0uU
TLSH
T11E235B4B651598B1CEE9023134D966179FB92E304BA740E3EFF32FC5ADB11A7E42052B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
2288	biroask.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\biroas.dll	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe
File created	C:\Windows\SysWOW64\biroask.exe	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
6116	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	biroask.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1080	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe
1080	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 2288	1080	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe	90
PID 1080 wrote to memory of 6116	1080	jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe	92

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\biroask.exe
  C:\Windows\system32\biroask.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:6116

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a.exe.bat
Size 274B
SHA256 9aedb49dad1fb8b8052db58734179cae84a60fc897f158b4609aacf427312e9d
MD5 b30e501c52684f3ab3f36600eee7994c
SHA1 c78fa8d6f88dbbc95fd582b02bd63c887f883727
SHA512 8d65ee59d0d113a276c017306025e94cfd7c572dcdc4c2ea366ad62dda9ee6618f695ea0e24c0e372ee583efaafb0eb7c49a68111d655b12f79fb493b007501b
TLSH
T1D5D02B49C57349210D08C8CF9A38698D812244943FDC3F201B3182921011068BACFB04
MD5 SHA1 SHA512 TLSH

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biroask.exe

Path C:\Windows\SysWOW64\biroask.exe
Size 48KB
SHA256 a0c9caa9927036dd5dcfb9701a7ff47782ffba5687d6bca83cf84aba66a4239a
MD5 24e9621d0bb3e11ce06749593b11b1ac
SHA1 2ce59eebd1657abdc5021497ff25a86ba6affb95
SHA512 754d46e0899e01b4a501d1c0d3f38bedcb3f3030f3bad1c7dd5cce75434f518a767d61052f91c31eb295c81bb094f85e54204c2ece54ad17138cd8d9fa0386de
SSDEEP 768:WU1LRP0gVDqJn75dLqDKCC0u4X+Zat5mL:WUpOumJnh0uU
TLSH
T11E235B4B651598B1CEE9023134D966179FB92E304BA740E3EFF32FC5ADB11A7E42052B
MD5 SHA1 SHA512 SSDEEP TLSH

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