Malware Analysis Report

2025-08-11 07:42

Sample ID 241003-tegdyaxcke
Target 0f7e92b27db58a84114aca132062e98b_JaffaCakes118
SHA256 b67fa7aa75df8ac6c3c63effcac744b675028fc7b57384bbc69b5f6134522abb
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

b67fa7aa75df8ac6c3c63effcac744b675028fc7b57384bbc69b5f6134522abb

Threat Level: Known bad

The file 0f7e92b27db58a84114aca132062e98b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

ramnit banker discovery spyware stealer trojan upx worm

Ramnit

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

UPX packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-03 15:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-03 15:58

Reported

2024-10-03 16:00

Platform

win7-20240903-en

Max time kernel

120s

Max time network

126s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\regsvr32mgr.exe C:\Windows\SysWOW64\regsvr32.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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\regsvr32mgr.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32mgr.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 180

Network

N/A

Files

memory/2712-0-0x0000000074D20000-0x0000000074DCF000-memory.dmp

memory/2712-3-0x00000000006D0000-0x0000000000701000-memory.dmp

\Windows\SysWOW64\regsvr32mgr.exe

MD5 1dcfb79162fe6a7047b30f1446c2fae5
SHA1 9c0296da3f5344a7e933c57e7d427c4de1a53bb4
SHA256 3c6033da9f18e528997cedfd12dfb4f76ee6124e675965f379201777a02d5655
SHA512 c405b032da32dfb1c4d5bd1175ddf8f0a72849fa4d83cc3342c6e43897ec4766a43832288ac9ba8b892d176fe9584bd518d8c6d09860b61eb3af83670ae33a91

memory/2796-10-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2796-11-0x0000000000400000-0x0000000000431000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM45D6.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/2796-18-0x0000000000400000-0x0000000000431000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM4654.tmp

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

memory/2712-20-0x00000000006D0000-0x0000000000701000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-03 15:58

Reported

2024-10-03 16:00

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

95s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\regsvr32mgr.exe C:\Windows\SysWOW64\regsvr32.exe N/A

UPX packed file

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\regsvr32mgr.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 644 wrote to memory of 4756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 644 wrote to memory of 4756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 644 wrote to memory of 4756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4756 wrote to memory of 4824 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe
PID 4756 wrote to memory of 4824 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe
PID 4756 wrote to memory of 4824 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0f7e92b27db58a84114aca132062e98b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4824 -ip 4824

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 536

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/4756-0-0x0000000074DF0000-0x0000000074E9F000-memory.dmp

C:\Windows\SysWOW64\regsvr32mgr.exe

MD5 1dcfb79162fe6a7047b30f1446c2fae5
SHA1 9c0296da3f5344a7e933c57e7d427c4de1a53bb4
SHA256 3c6033da9f18e528997cedfd12dfb4f76ee6124e675965f379201777a02d5655
SHA512 c405b032da32dfb1c4d5bd1175ddf8f0a72849fa4d83cc3342c6e43897ec4766a43832288ac9ba8b892d176fe9584bd518d8c6d09860b61eb3af83670ae33a91

memory/4824-4-0x0000000000400000-0x0000000000431000-memory.dmp

memory/4824-6-0x0000000000400000-0x0000000000431000-memory.dmp

memory/4824-7-0x0000000000400000-0x0000000000431000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~TM9981.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219