Malware Analysis Report

2025-01-19 07:03

Sample ID 240625-yr8q6ssejl
Target 0f5992539f2b311db82730823e88ed85_JaffaCakes118
SHA256 37c7dbda24d6473899bdcd0a4f9aa1a5e5d324a61fdd2923f11bb1117746479a
Tags
ramnit aspackv2 banker spyware stealer trojan upx worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

37c7dbda24d6473899bdcd0a4f9aa1a5e5d324a61fdd2923f11bb1117746479a

Threat Level: Known bad

The file 0f5992539f2b311db82730823e88ed85_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

ramnit aspackv2 banker spyware stealer trojan upx worm

Ramnit

Executes dropped EXE

Loads dropped DLL

UPX packed file

ASPack v2.12-2.42

Drops file in System32 directory

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-25 20:02

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-25 20:02

Reported

2024-06-25 20:04

Platform

win7-20231129-en

Max time kernel

118s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

Network

N/A

Files

\Windows\SysWOW64\rundll32mgr.exe

MD5 a53906da37a1a4a089ecff48550dc056
SHA1 929737f311d379d125d4fd60de9da163d758b120
SHA256 e80b60579b9c030a2204d7226af38354501ca9d6737475928a32c37e3a538ffc
SHA512 406df81514c9343c612a17bdb2ba35c82ddb0af4b3ea9737f6fc196d05d87820923df622d044f6af19286458380c1b5d4a841de549e3ad3ce174d09c5ad9a273

memory/1884-3-0x0000000010000000-0x0000000010138000-memory.dmp

memory/1884-9-0x0000000010000000-0x0000000010138000-memory.dmp

memory/2384-11-0x0000000000220000-0x0000000000249000-memory.dmp

memory/1884-18-0x0000000002170000-0x0000000002246000-memory.dmp

\Users\Admin\AppData\Local\Temp\dlg_0x6AE63F188.tmp

MD5 d4da27e43ce907969bc4dc84e35a5a21
SHA1 931fb00c7531acea0a33f27ae3f23a07f1027ae5
SHA256 21e81dcf61f22503773f7c1a9f5d85e5cd90e11f75ab077a30f617a6fcf77611
SHA512 96af6cdeb3daf72b10f69e4e48c4d72a5421f3b7472a6ec5323371ab1ce21b92bde44d91fd611b7b08e07215a9742ee9fbff4d54bc9534adc5a712ce3ffa85a2

memory/2384-19-0x0000000000400000-0x0000000000429000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM17A6.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

\Users\Admin\AppData\Local\Temp\~TM17C6.tmp

MD5 9b98d47916ead4f69ef51b56b0c2323c
SHA1 290a80b4ded0efc0fd00816f373fcea81a521330
SHA256 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA512 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

memory/2384-23-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2384-25-0x0000000000220000-0x0000000000249000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-25 20:02

Reported

2024-06-25 20:04

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32mgr.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4620 wrote to memory of 3464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4620 wrote to memory of 3464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4620 wrote to memory of 3464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3464 wrote to memory of 2824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 3464 wrote to memory of 2824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 3464 wrote to memory of 2824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f5992539f2b311db82730823e88ed85_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2824 -ip 2824

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2824 -s 10176

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 198.111.78.13.in-addr.arpa udp

Files

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 a53906da37a1a4a089ecff48550dc056
SHA1 929737f311d379d125d4fd60de9da163d758b120
SHA256 e80b60579b9c030a2204d7226af38354501ca9d6737475928a32c37e3a538ffc
SHA512 406df81514c9343c612a17bdb2ba35c82ddb0af4b3ea9737f6fc196d05d87820923df622d044f6af19286458380c1b5d4a841de549e3ad3ce174d09c5ad9a273

memory/3464-2-0x0000000010000000-0x0000000010138000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\dlg_0x6AE63F188.tmp

MD5 d4da27e43ce907969bc4dc84e35a5a21
SHA1 931fb00c7531acea0a33f27ae3f23a07f1027ae5
SHA256 21e81dcf61f22503773f7c1a9f5d85e5cd90e11f75ab077a30f617a6fcf77611
SHA512 96af6cdeb3daf72b10f69e4e48c4d72a5421f3b7472a6ec5323371ab1ce21b92bde44d91fd611b7b08e07215a9742ee9fbff4d54bc9534adc5a712ce3ffa85a2

memory/3464-9-0x0000000000400000-0x00000000004D6000-memory.dmp

memory/3464-14-0x0000000000400000-0x00000000004D6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~TM43FE.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/2824-11-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2824-10-0x00000000004D0000-0x00000000004F9000-memory.dmp