f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0

Analysis

max time kernel
150s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/09/2026, 22:25

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General

Target
jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe
Size 48KB
Sample260925-2bystaaa37
SHA256 f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0
MD5 92c59e53bdd311bb25b225b17fbfecb9
SHA1 227173d1fde57060e652b54d9024e0dafd47a714
SHA512 fea3b5eee573948a1894b3cf80520ca4760c2287ea7d763e2a46eccd8852904f8ce88061f0b8b82e6e8ef4a33c1f44240cfe6123a19cf102ae3d9fa1a5cefa9e
SSDEEP 384:IyfSdvKtvYSkhB3nDlZwuOIEuHtPsY2I4YQsJixGAXMepct5mA2Aok:IymCYSYB3nD7quNPsA4YNJiNXzat5ml
TLSH
T170235C47611998F2CADD023534E9711B5FBA2D3086A600A3EFA72F495DB10BBF524C2B
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
4252	biroask.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\biroas.dll	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe
File created	C:\Windows\SysWOW64\biroask.exe	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe
File opened for modification	C:\Windows\SysWOW64\biroask.exe	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.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
3880	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_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.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
4224	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe
4224	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 4252	4224	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe	93
PID 4224 wrote to memory of 3880	4224	jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe	95

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Windows\SysWOW64\biroask.exe
  C:\Windows\system32\biroask.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4252
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3880

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

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Downloads

jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0.exe.bat
Size 274B
SHA256 2f140b67020d489c41353b03560b51ebb31ed8527af3a2c9b1a9c606e0d873f7
MD5 0a433b9c8109a626b69158b17a29bbaa
SHA1 942138cc1c36e7e390ef7c5d6813399a6733378d
SHA512 8087c6d1112c269ae3f015fc5970ad7716870a4f850069d53b1e7bdd775c23ed77ebfeda8abe87f309bdc8e8ff572bc74fca429451b59aff1e5f19594cac3cad
TLSH
T1BAD02B44024ED6277410C0AB0F7C32CE602056881A8CFF320A13D1F7017102DF2C2F0A
MD5 SHA1 SHA512 TLSH

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biroask.exe

Path C:\Windows\SysWOW64\biroask.exe
Size 48KB
SHA256 f84ffac1ae51abc7cbe7bccdcbee56755d508abd501545a9960e088d3fc6b1d0
MD5 92c59e53bdd311bb25b225b17fbfecb9
SHA1 227173d1fde57060e652b54d9024e0dafd47a714
SHA512 fea3b5eee573948a1894b3cf80520ca4760c2287ea7d763e2a46eccd8852904f8ce88061f0b8b82e6e8ef4a33c1f44240cfe6123a19cf102ae3d9fa1a5cefa9e
SSDEEP 384:IyfSdvKtvYSkhB3nDlZwuOIEuHtPsY2I4YQsJixGAXMepct5mA2Aok:IymCYSYB3nD7quNPsA4YNJiNXzat5ml
TLSH
T170235C47611998F2CADD023534E9711B5FBA2D3086A600A3EFA72F495DB10BBF524C2B
MD5 SHA1 SHA512 SSDEEP TLSH

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