ramnit | a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ff

Analysis

max time kernel
91s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 16:48

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General

Target
a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll
Size 685KB
Sample241003-vbkgvsyhpg
SHA256 a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ff
MD5 86a7a160e257e190399d6059cacca0a0
SHA1 665fff8e0f5455e37d21da18ae12421da5ef3572
SHA512 0f9dc3decf33fbd78513e2313ddbb8af70e378be520a398b18e96510dbfb1549074d2a67be218c9482feda5eaa45723fb615083a92ef4ddfc1fe3477e39d12b2
SSDEEP 12288:FiDTDIO3IfnPZjcEBfsKYEZuROtto4aIJayoPJviaKYNVuI:YKnPZjcEBfsKYFuayoSsuI
MD5 SHA1 SHA512 SSDEEP

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

Executes dropped EXE 1 IoCs

pid	Process
4072	rundll32mgr.exe

Loads dropped DLL 1 IoCs

pid	Process
4072	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/4072-10-0x0000000000400000-0x000000000045C000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
880	4072	WerFault.exe	85

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 3104 wrote to memory of 3884	3104	rundll32.exe	84
PID 3104 wrote to memory of 3884	3104	rundll32.exe	84
PID 3104 wrote to memory of 3884	3104	rundll32.exe	84
PID 3884 wrote to memory of 4072	3884	rundll32.exe	85
PID 3884 wrote to memory of 4072	3884	rundll32.exe	85
PID 3884 wrote to memory of 4072	3884	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3104
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3884
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:4072
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 536
      4⤵
      Program crash
      PID:880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4072 -ip 4072
1⤵
PID:2068

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

~TMC9D8.tmp

Path C:\Users\Admin\AppData\Local\Temp\~TMC9D8.tmp
Size 1.6MB
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
SSDEEP 24576:qhYK3o0FvOh/e8AuDq8TJqbEPVVdqi90gvuPGO12HoIGTufqN8:2XFvO5egq8TMbEL59JCKSN
MD5 SHA1 SHA512 SSDEEP

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rundll32mgr.exe

Path C:\Windows\SysWOW64\rundll32mgr.exe
Size 354KB
SHA256 7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546
MD5 a8245f71e4e4aff10e574300abd2bcc2
SHA1 7ea3ae53a0697e526c6bc877b103b390af042d7a
SHA512 8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978
SSDEEP 3072:Vlo1Tbg90dIKmR5j273PAmr0auTmqqGcDCn+C5C7Q2mDoH:Q1XqN5a73Px3uTBqGcDCn+C5CMwH
MD5 SHA1 SHA512 SSDEEP

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memory/3884-1-0x0000000010000000-0x00000000100B0000-memory.dmp

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memory/4072-5-0x0000000000400000-0x000000000045C000-memory.dmp

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memory/4072-6-0x0000000000400000-0x000000000045C000-memory.dmp

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memory/4072-10-0x0000000000400000-0x000000000045C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads