ramnit | b8d8b12c04e988ed7ef54e154cb0f79dbd952c37bca0f4d1b7bb2997143cd1ce

Analysis

max time kernel
275s
max time network
316s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2022 10:43

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General

Target

b8d8b12c04e988ed7ef54e154cb0f79dbd952c37bca0f4d1b7bb2997143cd1ce.dll
Size

294KB
MD5

bf8bc404020858685fd039e52c22f600
SHA1

519d99f7a145d0b39d2e5c984177aebeb3c3de3c
SHA256

b8d8b12c04e988ed7ef54e154cb0f79dbd952c37bca0f4d1b7bb2997143cd1ce
SHA512

eb9f688ccf0f6ab85646c9178bb1975bf431b213703cfa75f902273ad59c8a7bf127c13870678f553c3ae2432fb09f202a791e4255475a68e84daec5ee5994a8
SSDEEP

6144:vxGMku94XCzTurXzLRlbDC9K69u2m+SqOWcsQQKiY4leDDGoggH/VREG6j4Gm01+:vxGCOXzLRlbDC9K69u2m+SqOWcsQQKim

Score

10^/10

ramnit banker 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
3792	rundll32mgr.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3792-136-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3792-138-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral2/memory/3792-139-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral2/memory/3792-142-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
3792	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4112	3652	WerFault.exe	80
4252	3792	WerFault.exe	81

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3792	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 3652	4172	rundll32.exe	80
PID 4172 wrote to memory of 3652	4172	rundll32.exe	80
PID 4172 wrote to memory of 3652	4172	rundll32.exe	80
PID 3652 wrote to memory of 3792	3652	rundll32.exe	81
PID 3652 wrote to memory of 3792	3652	rundll32.exe	81
PID 3652 wrote to memory of 3792	3652	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b8d8b12c04e988ed7ef54e154cb0f79dbd952c37bca0f4d1b7bb2997143cd1ce.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b8d8b12c04e988ed7ef54e154cb0f79dbd952c37bca0f4d1b7bb2997143cd1ce.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of UnmapMainImage
    PID:3792
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3792 -s 236
      4⤵
      Program crash
      PID:4252
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 628
    3⤵
    - Program crash
    PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3652 -ip 3652
1⤵
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3792 -ip 3792
1⤵
PID:1644

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~TM84F5.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

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

Filesize
81KB

MD5
cb41358796a14f05bccfddb098900c71

SHA1
8c14e0d55d4de69ea7b87db5dbe3d4bd39d13935

SHA256
6d5dca57b9f625f604a592e9d2ba39ec8d454d62bf387c61346c53c081463e0b

SHA512
8a2f816700f240574989142ae295b3d90f4ae1c4fd2141ae17b37d2111e5a83b3d452ceee1f1914091cf05f1889f5b6d83664a78674f0a653535c078501950de

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

Filesize
81KB

MD5
cb41358796a14f05bccfddb098900c71

SHA1
8c14e0d55d4de69ea7b87db5dbe3d4bd39d13935

SHA256
6d5dca57b9f625f604a592e9d2ba39ec8d454d62bf387c61346c53c081463e0b

SHA512
8a2f816700f240574989142ae295b3d90f4ae1c4fd2141ae17b37d2111e5a83b3d452ceee1f1914091cf05f1889f5b6d83664a78674f0a653535c078501950de

Download Submit
memory/3652-132-0x0000000000000000-mapping.dmp

Download
memory/3652-141-0x0000000010000000-0x0000000010051000-memory.dmp

Filesize
324KB

Download
memory/3792-133-0x0000000000000000-mapping.dmp

Download
memory/3792-136-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3792-138-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/3792-137-0x000000000041C000-0x000000000042A000-memory.dmp

Filesize
56KB

Download
memory/3792-139-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/3792-142-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3792-143-0x0000000077270000-0x0000000077413000-memory.dmp

Filesize
1.6MB

Download