5e21c28306ec4c788ff8be803779f5fe9cd22e7c0ded377cdf3aeb717e868dc4

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/10/2026, 20:57

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General

Target
jaffacakes118_Virus.Win32.Nimnul.a.dll
Size 99KB
Sample261012-zrmpdaef76
SHA256 5e21c28306ec4c788ff8be803779f5fe9cd22e7c0ded377cdf3aeb717e868dc4
MD5 a49bd3025bf06034a17524565d8031fe
SHA1 b0bacd48d5a226c46326a17d48015494581364e0
SHA512 e6e7757f77312decd0bed5753e50e192e57e5bc6afe5972e88d84ef0f6ac8603e1291da8d62bad0de4421fd44105dd9de7589f11a0020533332057d458af1ef5
SSDEEP 1536:ZqzT9Tj0Oe4+ZRCZAXVQvNlr9+V1qEVEp61cRzPxZHQ5PNiiWYeH+:AzhTjvGcZAXVQvE/QectPxZaNiSO+
TLSH
T155A39E649B0C8957D4A87EB8770776A8E3F4C43638275C9B3CA4295CA0F6F1F6B121E4
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2020	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4088	2020	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 1800	4404	rundll32.exe	89
PID 1800 wrote to memory of 2020	1800	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Virus.Win32.Nimnul.a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Virus.Win32.Nimnul.a.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2020
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2020 -s 368
      4⤵
      Program crash
      PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2020 -ip 2020
1⤵
PID:4848

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

rundll32mgr.exe

Path C:\Windows\SysWOW64\rundll32mgr.exe
Size 60KB
SHA256 ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed
MD5 94f2f6ffbba8e7644668b51b39983916
SHA1 63357bbdf90101969117983dbc0d4ed0e713c4d7
SHA512 d04430ceac70c6fa71d07d9ee82ac2bb5e6c0641d5c9e7e5a3ed39d342e8b198f367676516a55f0653e0b88635a027b9ad220e223145b8be8df281bb6faf7156
SSDEEP 1536:SVZnxm6MG9xgfrvEaoiT/GyphjXDYjKwttoswRmhApEH:CnxwgxgfR/DVG7wBpEH
TLSH
T1A553BF69BF833F9BD0BE8C3659F3786C086835497E407C1A6AB4014B57B590E8F35A78
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1800-0-0x0000000074E10000-0x0000000074E2D000-memory.dmp

Download

memory/1800-6-0x0000000002F40000-0x0000000002F41000-memory.dmp