f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb

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, 05:35

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General

Target
jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe
Size 52KB
Sample260924-gad2ssfa79
SHA256 f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb
MD5 81fe7ffdbd15e2bc0672686174adb81f
SHA1 ecfe1c4c4a8165fb6e3d5d1034c10821fb7ba4ee
SHA512 d7e0955033f6dc7d8401b254f741f54d7c07990242a514d9107ac7aa8fef383a151afa6055da2b6707b37210583ce13719ff33998534fbf22e14321025924590
SSDEEP 768:yvVjoqF7hqo8HALSj1jUDZjF9nF4AajzExLBHV:yNjVrq5QpnUgVhV
TLSH
T1AC335C4E614098F3C3FE063938145E167FFF6C30746A649BCB67B9946C64AA944BCE0B
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
4756	lenyunsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lenyuns.dll	jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe
File created	C:\Windows\SysWOW64\lenyunsk.exe	jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.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
1280	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_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lenyunsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5228 wrote to memory of 4756	5228	jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe	89
PID 5228 wrote to memory of 1280	5228	jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe	91

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5228
- C:\Windows\SysWOW64\lenyunsk.exe
  C:\Windows\system32\lenyunsk.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4756
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1280

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_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb.exe.bat
Size 274B
SHA256 d5f26fd4316a1e2af44d2b38a73910b357ba56d728c2335fb5ee8759c2a413f2
MD5 5f6d5c9725947f43feb3c066c4ea6bb7
SHA1 90740d969eb5a5aa05f3fa0f78eb17cd1d23b074
SHA512 b35f3464b480f272bcf54910e91eedf75f597e83891ef1d02245ad46ec90cb0acfa9239212caadd202dc5747110ab8df755b369952b69628ad09a4307765fb03
TLSH
T194D02B080E2788E6CC10C57F077A36E4902119D867BC1B22632180DDED6602DA6C6F00
MD5 SHA1 SHA512 TLSH

Submit Download

lenyunsk.exe

Path C:\Windows\SysWOW64\lenyunsk.exe
Size 52KB
SHA256 f113b98a6d6a8450d60aa0a5cdd0455ff0c35e6aa87f2488ea4a6b2ab0a422cb
MD5 81fe7ffdbd15e2bc0672686174adb81f
SHA1 ecfe1c4c4a8165fb6e3d5d1034c10821fb7ba4ee
SHA512 d7e0955033f6dc7d8401b254f741f54d7c07990242a514d9107ac7aa8fef383a151afa6055da2b6707b37210583ce13719ff33998534fbf22e14321025924590
SSDEEP 768:yvVjoqF7hqo8HALSj1jUDZjF9nF4AajzExLBHV:yNjVrq5QpnUgVhV
TLSH
T1AC335C4E614098F3C3FE063938145E167FFF6C30746A649BCB67B9946C64AA944BCE0B
MD5 SHA1 SHA512 SSDEEP TLSH