Malware Analysis Report

2025-01-19 07:07

Sample ID 240625-y16yyazhnf
Target 0f61ca8106f401101ef017bd831372f8_JaffaCakes118
SHA256 5df350657eedcff52b60a9aa497fa19cffefe140b54ba9b23fa299111fdbf1fe
Tags
ramnit 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

5df350657eedcff52b60a9aa497fa19cffefe140b54ba9b23fa299111fdbf1fe

Threat Level: Known bad

The file 0f61ca8106f401101ef017bd831372f8_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

ramnit banker spyware stealer trojan upx worm

Ramnit

Executes dropped EXE

Loads dropped DLL

UPX packed file

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 20:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-25 20:16

Reported

2024-06-25 20:18

Platform

win7-20240221-en

Max time kernel

120s

Max time network

120s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f61ca8106f401101ef017bd831372f8_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

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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f61ca8106f401101ef017bd831372f8_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f61ca8106f401101ef017bd831372f8_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Users\Admin\AppData\Local\Temp\tdrwkngw.exe

C:\Users\Admin\AppData\Local\Temp\tdrwkngw.exe

Network

N/A

Files

memory/1952-1-0x0000000010000000-0x000000001004A000-memory.dmp

\Windows\SysWOW64\rundll32mgr.exe

MD5 51a7b8e6dde65bdc6db16675e8e4efb2
SHA1 04be1eef924fe57a3a2f9a93dd1458283366242f
SHA256 a9c5a28460510e5a620bb2683361b899928730b34534e5774c0221081c15d4ce
SHA512 ee7fcc988ae337548e04595f574f1c68d3f2e80020d4e7be6a9dea967ad18f3262c8eced03e6ee914d248e4a51e58190ad9a761f7ad97dda7aee8531511306e2

memory/1952-2-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2952-11-0x0000000001FA0000-0x0000000002090000-memory.dmp

memory/2952-12-0x0000000000400000-0x000000000047F000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM11CC.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

\Users\Admin\AppData\Local\Temp\~TM122B.tmp

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-25 20:16

Reported

2024-06-25 20:18

Platform

win10v2004-20240611-en

Max time kernel

139s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f61ca8106f401101ef017bd831372f8_JaffaCakes118.dll,#1

Signatures

Executes dropped EXE

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

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 3628 wrote to memory of 1728 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3628 wrote to memory of 1728 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3628 wrote to memory of 1728 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1728 wrote to memory of 3964 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 1728 wrote to memory of 3964 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 1728 wrote to memory of 3964 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\0f61ca8106f401101ef017bd831372f8_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f61ca8106f401101ef017bd831372f8_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 416 -p 3964 -ip 3964

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 424

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1728-1-0x0000000010000000-0x000000001004A000-memory.dmp

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 51a7b8e6dde65bdc6db16675e8e4efb2
SHA1 04be1eef924fe57a3a2f9a93dd1458283366242f
SHA256 a9c5a28460510e5a620bb2683361b899928730b34534e5774c0221081c15d4ce
SHA512 ee7fcc988ae337548e04595f574f1c68d3f2e80020d4e7be6a9dea967ad18f3262c8eced03e6ee914d248e4a51e58190ad9a761f7ad97dda7aee8531511306e2