ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056

Analysis

max time kernel
150s
max time network
124s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
25/09/2026, 23:26

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General

Target
jaffacakes118_ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056.dll
Size 54KB
Sample260925-3e8ymaygpd
SHA256 ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056
MD5 0469d90958b9336f6ce683e69f2d8bbc
SHA1 ef1795f041b38e49256921efa0ac19ceeccb547f
SHA512 e50539db1f21a7721b73b842de8c2f3c41e00260bfe890e04a5e21e5fb0c2ea138f7f07f9a25baac5f112e9286e45de42133fbf6d5715e73c89c4116df026a14
SSDEEP 1536:U/FDerxoctKK+NisldHd58rRwM5cRdXsN2rmQAy3ugj8on5x5A:U9KeccuGVRdcN0J8on5k
TLSH
T15F435C173E91E4F1D34B0230798933335AFDAC3528D0681AEB6A4B5AFC765C7A53960B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
5184	rundll32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\msvscrt.dll	rundll32.exe
File opened for modification	C:\Windows\msvscrt.dll	rundll32.exe

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	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}\{F69EB73C-700A-42c9-8F9D-E8C4ABC27EF3} = "jaffacakes118_ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056.dll,1274759295,-1547320432,-1814625877"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5184	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 3744	4280	rundll32.exe	87
PID 3744 wrote to memory of 5184	3744	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 shell32,Control_RunDLL "C:\Windows\msvscrt.dll"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:5184

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

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Downloads

msvscrt.dll

Path C:\Windows\msvscrt.dll
Size 54KB
SHA256 ac89371af3b651e62eae1d6e8451bd2cdaa3d3d876d71a2b0540de50e4b51056
MD5 0469d90958b9336f6ce683e69f2d8bbc
SHA1 ef1795f041b38e49256921efa0ac19ceeccb547f
SHA512 e50539db1f21a7721b73b842de8c2f3c41e00260bfe890e04a5e21e5fb0c2ea138f7f07f9a25baac5f112e9286e45de42133fbf6d5715e73c89c4116df026a14
SSDEEP 1536:U/FDerxoctKK+NisldHd58rRwM5cRdXsN2rmQAy3ugj8on5x5A:U9KeccuGVRdcN0J8on5k
TLSH
T15F435C173E91E4F1D34B0230798933335AFDAC3528D0681AEB6A4B5AFC765C7A53960B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3744-0-0x0000000010000000-0x000000001000F000-memory.dmp

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memory/3744-3-0x0000000010000000-0x000000001000F000-memory.dmp

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memory/5184-2-0x0000000010000000-0x000000001000F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads