ramnit | b3389a16488b7cc5c4b7c03af7be310a2eb04123a9504c49052385b11785e441

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/12/2024, 04:53

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General

Target

b3389a16488b7cc5c4b7c03af7be310a2eb04123a9504c49052385b11785e441N.dll
Size

176KB
MD5

3962976ddaff97bd02bd8b73bda55dc0
SHA1

3daffe6cb072deb37f9ac7ad459f6083a85ed684
SHA256

b3389a16488b7cc5c4b7c03af7be310a2eb04123a9504c49052385b11785e441
SHA512

cb81d335a6772fe8795a8ca59c234832f5cc1273091990a47d34d65c4dfea7c9f9cedcad8df5b04b10bdd7d62afbc0a9f5d3f1b634c15cb9ee478aa58da7dbb6
SSDEEP

3072:KLKa1Zln2E+HVpTbFVKTyDr6wjZuqhWcA69EShJEsyDdb2zSp0ecQnttCe9VfAi:wKa1f2jV+2rDIKe69EeJElwa0ebtkM3

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
1800	rundll32mgr.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1800-6-0x0000000000400000-0x000000000042C1D8-memory.dmp	upx
behavioral2/memory/1800-11-0x0000000000400000-0x000000000042D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4936	1800	WerFault.exe	84

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 6 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2404	2544	rundll32.exe	83
PID 2544 wrote to memory of 2404	2544	rundll32.exe	83
PID 2544 wrote to memory of 2404	2544	rundll32.exe	83
PID 2404 wrote to memory of 1800	2404	rundll32.exe	84
PID 2404 wrote to memory of 1800	2404	rundll32.exe	84
PID 2404 wrote to memory of 1800	2404	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3389a16488b7cc5c4b7c03af7be310a2eb04123a9504c49052385b11785e441N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3389a16488b7cc5c4b7c03af7be310a2eb04123a9504c49052385b11785e441N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1800
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1800 -s 10168
      4⤵
      Program crash
      PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1800 -ip 1800
1⤵
PID:4752

Network

MITRE ATT&CK Enterprise v15

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\~TMB2A6.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
97KB

MD5
ef5dc2521333fb418bd5518f1db3fd08

SHA1
3d5e8d6dbf09a599f674fe9d6c1d736b0c31cb70

SHA256
75bfc7c1f54f2579541c35f721a6bbd9083c7208bd989624ceb25f16bd03afbe

SHA512
8768e95f5539dc61350f552d575c683e20e000f41283701c9c5f393da40975a02a7d432374c72565f3e1848266ee94e20d905f62b849f91f3c956b7980d87882

Download Submit
memory/1800-5-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1800-6-0x0000000000400000-0x000000000042C1D8-memory.dmp

Filesize
176KB

Download
memory/1800-11-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2404-0-0x0000000001EE0000-0x0000000001F11000-memory.dmp

Filesize
196KB

Download