ramnit | 18e5889266af1f5fb169dad0c923c799818496a2760f629340634a9daa1de548

Analysis

max time kernel
105s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
12/04/2025, 12:21

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General

Target

JaffaCakes118_b23bf449c6da16e5ce07188ecd3dd330.dll
Size

546KB
MD5

b23bf449c6da16e5ce07188ecd3dd330
SHA1

52d2229ece25882ba4124ae57d13ed5d9f640512
SHA256

18e5889266af1f5fb169dad0c923c799818496a2760f629340634a9daa1de548
SHA512

83e1cb2172225cfee7b648fc9e55d50bfebf368488a99e1a66f0aa70e91f91aa9082489e3c116b576bdee02deaf9436f37d10388dfe625cea92b23f2d712d7db
SSDEEP

12288:cNtBPQB+QpYK8rrbvRd9SfuXGXiHEXs6eAqj:cNn4B+q8rrrRd924GX+nv

Score

10^/10

ramnit banker discovery spyware stealer trojan upx worm

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
5364	regsvr32mgr.exe

Loads dropped DLL 1 IoCs

pid	Process
5364	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/5364-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5828	5364	WerFault.exe	86

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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32mgr.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2a11bae2-fe6e-4249-864b-9e9ed6e8dbc2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2a11bae2-fe6e-4249-864b-9e9ed6e8dbc2}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\DirectShow\MediaObjects	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\DirectShow\MediaObjects\Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\DirectShow\MediaObjects\Categories\4a69b442-28be-4991-969c-b500adf5d8a8	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\DirectShow\MediaObjects\Categories\4a69b442-28be-4991-969c-b500adf5d8a8\2a11bae2-fe6e-4249-864b-9e9ed6e8dbc2	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\DirectShow\MediaObjects\2a11bae2-fe6e-4249-864b-9e9ed6e8dbc2	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 6096 wrote to memory of 2164	6096	regsvr32.exe	84
PID 6096 wrote to memory of 2164	6096	regsvr32.exe	84
PID 6096 wrote to memory of 2164	6096	regsvr32.exe	84
PID 2164 wrote to memory of 5364	2164	regsvr32.exe	86
PID 2164 wrote to memory of 5364	2164	regsvr32.exe	86
PID 2164 wrote to memory of 5364	2164	regsvr32.exe	86

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b23bf449c6da16e5ce07188ecd3dd330.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:6096
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b23bf449c6da16e5ce07188ecd3dd330.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:5364
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5364 -s 476
      4⤵
      Program crash
      PID:5828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5364 -ip 5364
1⤵
PID:5320

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

C:\Users\Admin\AppData\Local\Temp\~TM76E5.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
168KB

MD5
abd2017fdcc7d6a6e093bd4000c0612f

SHA1
307da947fc3be1e5c4dd56bb8434330a8d35c26f

SHA256
45c7f0dc28167e585774c436fdb09c56286389dcfea3e647b7a4218e2a4442b5

SHA512
a00f490a596d19150daead0a5e197140bcdf6fd84a6dd7dda4b5c9bc1eab8846eb3bbae8193eca1ebe4f885a2b0d9c7c9fb95721aae3b3028c5150d85f3a3e10

Download Submit
memory/2164-0-0x0000000007460000-0x00000000074F3000-memory.dmp

Filesize
588KB

Download
memory/5364-5-0x0000000002330000-0x0000000002420000-memory.dmp

Filesize
960KB

Download
memory/5364-6-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download