ramnit | cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67

Analysis

max time kernel
148s
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
28/09/2026, 04:27

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General

Target
jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll
Size 1.4MB
Sample260928-e3fd8avckf
SHA256 cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67
MD5 7ae887c2d7d7c4b24fe12751c4438a8a
SHA1 1daa69e0725345db8a5bc7db7e69a00337ede9a7
SHA512 222e74230c592694e5c07d252137b5c1c51c9816a997021fb8113090ce8e30ab24f61da2fce4557b4f751ea5bb37ad63bcd9dca814ba34eb68bae7782c8b3963
SSDEEP 24576:X/W7APovljdf31kdm74n8spGBDvYTkaw6cOiusZSS1PC4JTsKEIGF8:XIdxx74nyBDh6mSuCmTTEIn
TLSH
T123657B10EEC1C433E8B5017596FF9B656A3A91313B16C6D3A68438747A603E1B6363EF
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

banker bootkit discovery ramnit persistence 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
5056	rundll32Srv.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d000000019cb7-4.dat	upx
behavioral2/memory/5056-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/5056-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3728	5056	WerFault.exe	89
5584	4296	WerFault.exe	87

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	rundll32Srv.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 4296	1264	rundll32.exe	87
PID 4296 wrote to memory of 5056	4296	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4296
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5056
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5056 -s 332
      4⤵
      Program crash
      PID:3728
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 564
    3⤵
    - Program crash
    PID:5584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 5056 -ip 5056
1⤵
PID:956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4296 -ip 4296
1⤵
PID:5648

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

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

rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 55KB
SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
MD5 ff5e1f27193ce51eec318714ef038bef
SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
TLSH
T1EA43F2C6AE1903A2DF75053314E4C6B4CBA43C558B737A9EFA50002BFF89463A817F59
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4296-2-0x0000000074F80000-0x00000000750FA000-memory.dmp

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memory/4296-8-0x0000000074F80000-0x00000000750FA000-memory.dmp

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memory/5056-5-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/5056-7-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/5056-6-0x00000000005D0000-0x00000000005DF000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads