Malware Analysis Report

2025-01-18 12:38

Sample ID 240403-288dhsfg9x
Target a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118
SHA256 9f35623c249226a739c810db0da1b7332b9d98222e9e50c8aaa001edcf505af1
Tags
formbook rv9n rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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 Overview

score
10/10

SHA256

9f35623c249226a739c810db0da1b7332b9d98222e9e50c8aaa001edcf505af1

Threat Level: Known bad

The file a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook rv9n 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 behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-03 23:16

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: behavioral4

Detonation Overview

Submitted

2024-04-03 23:16

Reported

2024-04-03 23:18

Platform

win10v2004-20231215-en

Max time kernel

90s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\itfd.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 5112 wrote to memory of 4752 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5112 wrote to memory of 4752 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5112 wrote to memory of 4752 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4752 wrote to memory of 4112 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4752 wrote to memory of 4112 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4752 wrote to memory of 4112 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4752 wrote to memory of 4112 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4752 -ip 4752

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 656

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 225.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 210.108.222.173.in-addr.arpa udp

Files

memory/4752-0-0x0000000010000000-0x000000001000D000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 23:16

Reported

2024-04-03 23:18

Platform

win7-20240215-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe
PID 2900 wrote to memory of 1564 N/A C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\nsd198A.tmp\itfd.dll

MD5 af514b31b839ced67c0907a6569e3495
SHA1 ca1c2fd9e815d695ec163cac2d2feb72fa9b0a00
SHA256 e5b37e22db2aab4db04417c4b30be841686e2300687d5b3abd8a0456cd144d31
SHA512 22920f0365435be0961a33009ab1bff010ab5534553bd9d75e9be30ea588c67ea8ac7be936e4759019cb2a7fa6232fbbb4cef516ab54f68396934f383da52055

memory/2900-8-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1564-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2900-10-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1564-12-0x0000000000830000-0x0000000000B33000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 23:16

Reported

2024-04-03 23:18

Platform

win10v2004-20240226-en

Max time kernel

92s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a9529e72ea3c3b4f0c5dfe1915c17a8a_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4536 -ip 4536

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4536 -s 952

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 225.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 210.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 226.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsr3104.tmp\itfd.dll

MD5 af514b31b839ced67c0907a6569e3495
SHA1 ca1c2fd9e815d695ec163cac2d2feb72fa9b0a00
SHA256 e5b37e22db2aab4db04417c4b30be841686e2300687d5b3abd8a0456cd144d31
SHA512 22920f0365435be0961a33009ab1bff010ab5534553bd9d75e9be30ea588c67ea8ac7be936e4759019cb2a7fa6232fbbb4cef516ab54f68396934f383da52055

memory/4536-8-0x0000000010000000-0x000000001000D000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-03 23:16

Reported

2024-04-03 23:18

Platform

win7-20240221-en

Max time kernel

149s

Max time network

122s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

rat
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
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1252 set thread context of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1728 set thread context of 1392 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 1056 set thread context of 1392 N/A C:\Windows\SysWOW64\wuapp.exe C:\Windows\Explorer.EXE

Suspicious behavior: MapViewOfSection

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\wuapp.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2068 wrote to memory of 1252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1252 wrote to memory of 1728 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1392 wrote to memory of 1056 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wuapp.exe
PID 1056 wrote to memory of 2196 N/A C:\Windows\SysWOW64\wuapp.exe C:\Windows\SysWOW64\cmd.exe
PID 1056 wrote to memory of 2196 N/A C:\Windows\SysWOW64\wuapp.exe C:\Windows\SysWOW64\cmd.exe
PID 1056 wrote to memory of 2196 N/A C:\Windows\SysWOW64\wuapp.exe C:\Windows\SysWOW64\cmd.exe
PID 1056 wrote to memory of 2196 N/A C:\Windows\SysWOW64\wuapp.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\wuapp.exe

"C:\Windows\SysWOW64\wuapp.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\rundll32.exe"

Network

N/A

Files

memory/1252-0-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1728-1-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1252-2-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1728-3-0x0000000002460000-0x0000000002763000-memory.dmp

memory/1728-5-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1728-6-0x00000000001F0000-0x0000000000204000-memory.dmp

memory/1392-7-0x00000000038E0000-0x00000000039E0000-memory.dmp

memory/1392-8-0x00000000064C0000-0x00000000065DA000-memory.dmp

memory/1056-9-0x00000000001E0000-0x00000000001EB000-memory.dmp

memory/1056-10-0x00000000001E0000-0x00000000001EB000-memory.dmp

memory/1056-11-0x0000000000090000-0x00000000000BF000-memory.dmp

memory/1056-12-0x0000000001F70000-0x0000000002273000-memory.dmp

memory/1056-13-0x0000000000090000-0x00000000000BF000-memory.dmp

memory/1056-15-0x0000000001D40000-0x0000000001DD3000-memory.dmp

memory/1392-17-0x00000000064C0000-0x00000000065DA000-memory.dmp