ramnit | aa89af040a77f2dd0b84f26792bb3e80167a25162d8fa6305f77c34af8ab6d8e

General

Target

aa89af040a77f2dd0b84f26792bb3e80167a25162d8fa6305f77c34af8ab6d8eN.dll
Size

716KB
MD5

fed44ed48cd670fa45ded285d60ccce0
SHA1

a2f12f33abfd41fc5775aa523d6d7c5b189c006b
SHA256

aa89af040a77f2dd0b84f26792bb3e80167a25162d8fa6305f77c34af8ab6d8e
SHA512

178ce207f0de78a47c629f666d62eb81ce573153af53c5b2e7e6bd9cd8f94786ec2fbe546a01b3943b59a92b7abbe0c18dd3b1d68cb9b9ec88b81c4ce6e7cca7
SSDEEP

12288:4hpUrEIZJqr1AkBWwNa5R0EYl795/amaX3QXaPKUS8BadVT46LYQubYge3OUUTBb:4/jG01NHXaPefT4ergwOUsx

Score

10^/10

ramnit banker defense_evasion 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
1636	rundll32mgr.exe

Loads dropped DLL 2 IoCs

pid	Process
1636	rundll32mgr.exe
1636	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/1636-20-0x0000000000400000-0x0000000000469000-memory.dmp	upx

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\Wplugin.dll	rundll32mgr.exe
File opened for modification	C:\Windows\Wplugin.dll	rundll32mgr.exe
File created	C:\Windows\explorer.exe.local	rundll32mgr.exe
File created	C:\Windows\ws2help.dll	rundll32mgr.exe
File opened for modification	C:\Windows\ws2help.dll	rundll32mgr.exe

Hijack Execution Flow: DLL Search Order Hijacking 1 TTPs
Possible initial access via DLL redirection search order hijacking.
defense_evasion

DLL Search Order Hijacking
T1574.001

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4576	3188	WerFault.exe	83
1720	1636	WerFault.exe	84
4276	1636	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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
1636	rundll32mgr.exe
1636	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 3188	2872	rundll32.exe	83
PID 2872 wrote to memory of 3188	2872	rundll32.exe	83
PID 2872 wrote to memory of 3188	2872	rundll32.exe	83
PID 3188 wrote to memory of 1636	3188	rundll32.exe	84
PID 3188 wrote to memory of 1636	3188	rundll32.exe	84
PID 3188 wrote to memory of 1636	3188	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa89af040a77f2dd0b84f26792bb3e80167a25162d8fa6305f77c34af8ab6d8eN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa89af040a77f2dd0b84f26792bb3e80167a25162d8fa6305f77c34af8ab6d8eN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1636
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 640
      4⤵
      Program crash
      PID:1720
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 10324
      4⤵
      Program crash
      PID:4276
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 628
    3⤵
    - Program crash
    PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3188 -ip 3188
1⤵
PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1636 -ip 1636
1⤵
PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1636 -ip 1636
1⤵
PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Hijack Execution Flow

1

T1574

DLL Search Order Hijacking

1

T1574.001

Privilege Escalation

Hijack Execution Flow

1

T1574

DLL Search Order Hijacking

1

T1574.001

Defense Evasion

Hijack Execution Flow

1

T1574

DLL Search Order Hijacking

1

T1574.001

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~TMA1DD.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
C:\Users\Admin\AppData\Roaming\Wplugin.dll

Filesize
108KB

MD5
8847a8302dacc1d6fca61f125c8fe8e0

SHA1
f399142bbf03660bee1df555ebbf3acc8f658cf0

SHA256
9c2726defa122089f8251fa104f76d66830f448774ab9bd634adbb6e492e3943

SHA512
2b028bb4139c352b80db1509d1a3f479a8ef7e9b3b73ddbf62e2d83d4e59adf4a0bd6b9d68409bc0b6fafb7a5f56844fbfed6d00b824a6b370689801ce1c837f

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

Filesize
254KB

MD5
9965f747b6eae58ca0bf70926c506c9d

SHA1
bd45fdfec1c4337026c2a9e6a70ad045b371a8e4

SHA256
bb749c9ad6926bfa806a00903c82b2cf1ecf0e563f9189046eac9c896fbce7b9

SHA512
a1700f0c46d986aa8fd5732801343efb7812036eb7d6b43f4522b6c8f40df63fd15b4546a82596ac9ae4184bc6e96611cac1f6021f22b8d4eed607a7dc9df562

Download Submit
memory/1636-14-0x0000000002280000-0x00000000022E9000-memory.dmp

Filesize
420KB

Download
memory/1636-20-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1636-23-0x0000000002280000-0x00000000022E9000-memory.dmp

Filesize
420KB

Download
memory/3188-0-0x0000000010000000-0x00000000100B4000-memory.dmp

Filesize
720KB

Download
memory/3188-21-0x0000000010000000-0x00000000100B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads