ramnit | 66af9639ec13e6fce0e1b5a5285748dfb490e3dca8b9316ae46e0cd7640303cc

Analysis

max time kernel
150s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 12:20

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General

Target
jaffacakes118_Virus.Win32.Nimnul.a.dll
Size 142KB
Sample261014-ph3dcs1y8p
SHA256 66af9639ec13e6fce0e1b5a5285748dfb490e3dca8b9316ae46e0cd7640303cc
MD5 0ae57b9868ff7c87d1a68cf2f31ce158
SHA1 101bf6dc3bd7bea6a07efd6ffd91659d5aad4c49
SHA512 e0f2f7cc3295999f1c6f9e3fcf6c894bd87204278a0c5a3bf13839bf40f54ff16102863005d51bd4a87010f742203f2a801b12f8927bc1a7735becf0a706cd5d
SSDEEP 3072:GGBuIngIopajowVh98G50GzyE/KmsMS3Szva/nxHZn:GyLGpSVh9f50Gz9/KmsMS3Su/xHZn
TLSH
T1F7E3BE457BD47D4BF09792347CB28F31E93B2811353B5106C1E5E267EAFA1329839B4A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

banker discovery ramnit spyware stealer trojan upx worm

Malware Config

Signatures

Family: Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Executes dropped EXE 1 IoCs

pid	Process
5144	rundll32mgr.exe

Loads dropped DLL 1 IoCs

pid	Process
5144	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/5144-9-0x0000000000400000-0x000000000042A000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5892	5144	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 3304 wrote to memory of 840	3304	rundll32.exe	89
PID 840 wrote to memory of 5144	840	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:3304
- 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:840
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:5144
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5144 -s 544
      4⤵
      Program crash
      PID:5892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 5144 -ip 5144
1⤵
PID:980

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

~TM371.tmp

Path C:\Users\Admin\AppData\Local\Temp\~TM371.tmp
Size 1.7MB
SHA256 45369a39532d605353ca49d2c2c901853cd5181e84b64fbfbfdb19d5fe60539d
MD5 a49bad7718978035494a1ba8f445753c
SHA1 2975908be9449bd695a57d192850626f2519b838
SHA512 04c53db2b9768e619bd24cd55ac87cac0ef5b6164345f18c57c950e5704efa98d4f60767c4a15ff88f5df562f3ff16b250d92ca1b9244086b403fba25c69eea8
SSDEEP 24576:mJVny4SiGGB49pFrjWpbqne6fuYQSX+UIXzbqF/j/2AqfsqLrDZaXIIDA6eW:D4SGODe6fuNs+UWzKj+AbqcXUW
TLSH
T15C85B35163E94215F6F73B7059BD26340E7A7CA5AB78C2DF128411AE8EB0EC08D717A3
MD5 SHA1 SHA512 SSDEEP TLSH

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rundll32mgr.exe

Path C:\Windows\SysWOW64\rundll32mgr.exe
Size 106KB
SHA256 936b14fbbf629fcf92ac06673d974de2b2a44a109953e6664e1c36a4e5c9d27c
MD5 dcd2cafa72c9d5bd898b636a18133d3c
SHA1 b55e85453de9254cbf4c21c0de92d82c6deefccb
SHA512 59e475f668015b3a6372d79ea6459b21ae591d73305b7696ef139fe0e716f1038595ea5df079e1850535e6358aef4d8e92bdee68ffd07b44471bc7133041952c
SSDEEP 3072:Vso1Tbg90dIKmR5j273PAmr0auTmqqGcDCn+C5C7c:b1XqN5a73Px3uTBqGcDCn+C5CY
TLSH
T119B3AFC53018C717C7A26C71F87399E366659A621C3E6132F6123BD23AF2E95BB34709
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/840-0-0x0000000010000000-0x0000000010029000-memory.dmp

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memory/5144-6-0x00000000006F0000-0x000000000071A000-memory.dmp

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memory/5144-8-0x00000000774B8000-0x00000000774B9000-memory.dmp

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memory/5144-9-0x0000000000400000-0x000000000042A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads