Malware Analysis Report

2025-08-10 14:19

Sample ID 241003-znwg4swcqk
Target 107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118
SHA256 b1da42e09f4e4e6219f0c4413fceeef373c6da58ad1c5acfd6d7ef8debbca389
Tags
ramnit banker discovery spyware stealer trojan upx worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

b1da42e09f4e4e6219f0c4413fceeef373c6da58ad1c5acfd6d7ef8debbca389

Threat Level: Known bad

The file 107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

ramnit banker discovery spyware stealer trojan upx worm

Ramnit

Loads dropped DLL

Executes dropped EXE

Drops file in System32 directory

UPX packed file

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-03 20:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-03 20:52

Reported

2024-10-03 20:54

Platform

win7-20240708-en

Max time kernel

117s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

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\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe 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

UPX packed file

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32mgr.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

Network

N/A

Files

memory/2196-2-0x0000000010000000-0x0000000010054000-memory.dmp

memory/2196-1-0x0000000010000000-0x0000000010054000-memory.dmp

memory/2640-12-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 c9c4a336475a11e54749da86bdcf4a10
SHA1 37d4bdddfce9b9e3b14b9480bbacfbf5842690d8
SHA256 ee2ff34f4632ff1bc66c5ca5a89b6ad630eda15976120652dc4d4ed399df1cc1
SHA512 55f290d69bd092a221ef5e333d3b7ad1bfc654ded73d47f869a5cf2b8f5db638716d5681e019f717e0590a3b5a4bb96b01bded98336f7677be18de4886cdd982

memory/2196-10-0x0000000000690000-0x00000000006CB000-memory.dmp

memory/2196-7-0x0000000000690000-0x00000000006CB000-memory.dmp

memory/2640-13-0x00000000003A0000-0x00000000003DB000-memory.dmp

memory/2640-14-0x0000000000400000-0x000000000043B000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM3553.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/2640-18-0x0000000000400000-0x000000000043B000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM35A2.tmp

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

memory/2640-23-0x00000000003A0000-0x00000000003DB000-memory.dmp

memory/2640-25-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-03 20:52

Reported

2024-10-03 20:54

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

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\rundll32mgr.exe 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

UPX packed file

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32mgr.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2244 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2244 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2244 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 3688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4012 wrote to memory of 3688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4012 wrote to memory of 3688 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\107825b7bd56d3fd7ced2683a5f8b25f_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\107825b7bd56d3fd7ced2683a5f8b25f_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 408 -p 4012 -ip 4012

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3688 -ip 3688

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3688 -s 10180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4012 -s 628

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 134.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 66.212.201.84.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/4012-0-0x0000000010000000-0x0000000010054000-memory.dmp

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 c9c4a336475a11e54749da86bdcf4a10
SHA1 37d4bdddfce9b9e3b14b9480bbacfbf5842690d8
SHA256 ee2ff34f4632ff1bc66c5ca5a89b6ad630eda15976120652dc4d4ed399df1cc1
SHA512 55f290d69bd092a221ef5e333d3b7ad1bfc654ded73d47f869a5cf2b8f5db638716d5681e019f717e0590a3b5a4bb96b01bded98336f7677be18de4886cdd982

memory/3688-4-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3688-6-0x0000000002050000-0x000000000208B000-memory.dmp

memory/3688-7-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~TMAAD6.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/4012-11-0x0000000010000000-0x0000000010054000-memory.dmp

memory/3688-13-0x0000000002050000-0x000000000208B000-memory.dmp