Malware Analysis Report

2025-01-18 12:39

Sample ID 240404-xscjpafe8z
Target c052190b60d83304962baa2f4381ee06_JaffaCakes118
SHA256 9f59a9c7a38d8031c5b0829da6c4c10951b1de67adada4f567449d4b6ea8d83c
Tags
formbook nk6l rat spyware stealer trojan
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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9f59a9c7a38d8031c5b0829da6c4c10951b1de67adada4f567449d4b6ea8d83c

Threat Level: Known bad

The file c052190b60d83304962baa2f4381ee06_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook nk6l rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-04 19:06

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-04 19:06

Reported

2024-04-04 19:09

Platform

win7-20240221-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe
PID 1940 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1940 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1940 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1940 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 468

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nso1279.tmp\pjzghir.dll

MD5 42913016238730a9aed1e2246f26e944
SHA1 23af57bdd8fcef04ff222d4945a92e27685e0f53
SHA256 0e379293c9b084834bbc33561278ec9c8df126ba38e99f79640d5e76a7838745
SHA512 86c5b94353a6bfa0c7a5a519af32ec198c48da8f12244cbca71091033e47b56f17267d73d5d2192cb34fef1005061ee3e4e4c1f508c3dd3748a22415f15bed32

memory/2968-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2968-11-0x0000000000700000-0x0000000000A03000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-04 19:06

Reported

2024-04-04 19:09

Platform

win10v2004-20231215-en

Max time kernel

145s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c052190b60d83304962baa2f4381ee06_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 1696 -ip 1696

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 976

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 241.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsc3FC9.tmp\pjzghir.dll

MD5 42913016238730a9aed1e2246f26e944
SHA1 23af57bdd8fcef04ff222d4945a92e27685e0f53
SHA256 0e379293c9b084834bbc33561278ec9c8df126ba38e99f79640d5e76a7838745
SHA512 86c5b94353a6bfa0c7a5a519af32ec198c48da8f12244cbca71091033e47b56f17267d73d5d2192cb34fef1005061ee3e4e4c1f508c3dd3748a22415f15bed32

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-04 19:06

Reported

2024-04-04 19:09

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 236

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-04 19:06

Reported

2024-04-04 19:09

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

Signatures

Program crash

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4924 wrote to memory of 700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4924 wrote to memory of 700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4924 wrote to memory of 700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\pjzghir.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 700 -ip 700

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 700 -s 664

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.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 98.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp

Files

N/A