Malware Analysis Report

2025-01-18 12:41

Sample ID 240402-1hnqraec41
Target 97d698a2454cb6675dad12033500c17f_JaffaCakes118
SHA256 359ecb05de93b2ccc31cc15d249ef69a564d2f2e63d925126a6d784ef224766b
Tags
formbook dn7r 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

359ecb05de93b2ccc31cc15d249ef69a564d2f2e63d925126a6d784ef224766b

Threat Level: Known bad

The file 97d698a2454cb6675dad12033500c17f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook dn7r rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Program crash

NSIS installer

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 21:39

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

2024-04-02 21:39

Reported

2024-04-02 21:41

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\offyp.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 2272 wrote to memory of 4480 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2272 wrote to memory of 4480 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2272 wrote to memory of 4480 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4480 wrote to memory of 2276 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4480 wrote to memory of 2276 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4480 wrote to memory of 2276 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4480 wrote to memory of 2276 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\offyp.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4480 -ip 4480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 736

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 78.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 87.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/4480-0-0x00000000754C0000-0x00000000754CB000-memory.dmp

memory/4480-1-0x00000000754C0000-0x00000000754CB000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 21:39

Reported

2024-04-02 21:41

Platform

win7-20240221-en

Max time kernel

117s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_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\97d698a2454cb6675dad12033500c17f_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\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe
PID 1784 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nst780E.tmp\offyp.dll

MD5 367abec7270d4919121d630ad1e9359a
SHA1 f9508697941b1619541babd95744abeb1b0ce6f5
SHA256 8154494ad395ee4638b8990a47a3d163452514f6b45ee71919445ba1cff60099
SHA512 9fa6db19991df3bac0d97176f1cf14db0ed67c3b1d2276ebecaf7f7dab2c1cfe2e9db5820fd708a61312b57d4727805c7481b030e94837d6a9e9365d4a1f0638

memory/1784-7-0x0000000075220000-0x000000007522B000-memory.dmp

memory/1152-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1784-10-0x0000000075220000-0x000000007522B000-memory.dmp

memory/1152-11-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 21:39

Reported

2024-04-02 21:41

Platform

win10v2004-20240226-en

Max time kernel

91s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97d698a2454cb6675dad12033500c17f_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5648 -ip 5648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5648 -s 1072

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 82.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 87.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsn35C6.tmp\offyp.dll

MD5 367abec7270d4919121d630ad1e9359a
SHA1 f9508697941b1619541babd95744abeb1b0ce6f5
SHA256 8154494ad395ee4638b8990a47a3d163452514f6b45ee71919445ba1cff60099
SHA512 9fa6db19991df3bac0d97176f1cf14db0ed67c3b1d2276ebecaf7f7dab2c1cfe2e9db5820fd708a61312b57d4727805c7481b030e94837d6a9e9365d4a1f0638

memory/5648-6-0x0000000074DF0000-0x0000000074DFB000-memory.dmp

memory/5648-9-0x0000000074DF0000-0x0000000074DFB000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-02 21:39

Reported

2024-04-02 21:41

Platform

win7-20240215-en

Max time kernel

146s

Max time network

118s

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
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1468 set thread context of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 set thread context of 1092 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2240 set thread context of 1092 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2732 set thread context of 1092 N/A C:\Windows\SysWOW64\cmmon32.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\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\cmmon32.exe N/A
N/A N/A C:\Windows\SysWOW64\cmmon32.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\cmmon32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 1468 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1468 wrote to memory of 2240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmmon32.exe
PID 2240 wrote to memory of 2732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmmon32.exe
PID 2240 wrote to memory of 2732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmmon32.exe
PID 2240 wrote to memory of 2732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmmon32.exe
PID 2732 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2732 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmmon32.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\offyp.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\cmmon32.exe

"C:\Windows\SysWOW64\cmmon32.exe"

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/1468-0-0x0000000074910000-0x000000007491B000-memory.dmp

memory/1468-1-0x0000000074900000-0x000000007490B000-memory.dmp

memory/1468-2-0x0000000074900000-0x000000007490B000-memory.dmp

memory/2240-3-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1468-4-0x0000000074900000-0x000000007490B000-memory.dmp

memory/2240-5-0x0000000002270000-0x0000000002573000-memory.dmp

memory/1092-7-0x0000000003C10000-0x0000000003D10000-memory.dmp

memory/2240-9-0x00000000001F0000-0x0000000000205000-memory.dmp

memory/1092-10-0x0000000004CE0000-0x0000000004DFA000-memory.dmp

memory/2240-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2240-14-0x0000000000250000-0x0000000000265000-memory.dmp

memory/2240-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1092-12-0x0000000004CE0000-0x0000000004DFA000-memory.dmp

memory/1092-15-0x0000000005070000-0x0000000005175000-memory.dmp

memory/2732-16-0x0000000000BB0000-0x0000000000BBD000-memory.dmp

memory/2732-17-0x0000000000BB0000-0x0000000000BBD000-memory.dmp

memory/2732-18-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/2732-19-0x0000000001FC0000-0x00000000022C3000-memory.dmp

memory/2732-20-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/2732-22-0x00000000008E0000-0x0000000000974000-memory.dmp