Malware Analysis Report

2025-01-18 12:33

Sample ID 240831-e2x8mswbll
Target cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118
SHA256 22542d1aef8c0987be0f91b90e4f70f372cc1b16ed67bbb1582798cac732f538
Tags
discovery persistence formbook pg 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 Overview

score
10/10

SHA256

22542d1aef8c0987be0f91b90e4f70f372cc1b16ed67bbb1582798cac732f538

Threat Level: Known bad

The file cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

discovery persistence formbook pg rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 04:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 04:26

Reported

2024-08-31 04:29

Platform

win7-20240708-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe"

Signatures

Executes dropped EXE

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

Loads dropped DLL

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\systemkemel = "C:\\Users\\Admin\\AppData\\Local\\kemelsystmgr.exe" C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2416 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2416 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2640 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2640 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2640 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2640 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2904 wrote to memory of 1864 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

"C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

"C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

Network

N/A

Files

memory/2416-0-0x000000007437E000-0x000000007437F000-memory.dmp

memory/2416-1-0x0000000001000000-0x000000000106E000-memory.dmp

memory/2416-2-0x0000000000420000-0x000000000043A000-memory.dmp

memory/2416-3-0x0000000074370000-0x0000000074A5E000-memory.dmp

memory/2416-4-0x000000007437E000-0x000000007437F000-memory.dmp

memory/2416-5-0x0000000074370000-0x0000000074A5E000-memory.dmp

memory/2416-8-0x0000000074370000-0x0000000074A5E000-memory.dmp

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

MD5 cc38e3ac1ca97aefdaf92643c1dc68f3
SHA1 3f80d544c9e3b789db490a13c86dc5cd61682bc2
SHA256 22542d1aef8c0987be0f91b90e4f70f372cc1b16ed67bbb1582798cac732f538
SHA512 04c876e75e495e1dad18c06d669c2965feaa25d454fa54dc754091effc67c4704a78c10a53185b0cdb4e2cc3b5ca9ab6854632205539e6853dbd84e1b4f79235

memory/2904-12-0x00000000010D0000-0x000000000113E000-memory.dmp

memory/2904-13-0x0000000074320000-0x0000000074A0E000-memory.dmp

memory/2904-14-0x0000000074320000-0x0000000074A0E000-memory.dmp

memory/2904-15-0x0000000074320000-0x0000000074A0E000-memory.dmp

memory/1864-16-0x0000000000400000-0x000000000042A000-memory.dmp

memory/1864-19-0x0000000000400000-0x000000000042A000-memory.dmp

memory/1864-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2904-21-0x0000000074320000-0x0000000074A0E000-memory.dmp

memory/2904-22-0x0000000074320000-0x0000000074A0E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 04:26

Reported

2024-08-31 04:29

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

142s

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\systemkemel = "C:\\Users\\Admin\\AppData\\Local\\kemelsystmgr.exe" C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1376 set thread context of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 4012 set thread context of 3504 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Windows\Explorer.EXE
PID 260 set thread context of 3504 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\Explorer.EXE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mstsc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\mstsc.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4164 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4164 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4164 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4164 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4164 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4164 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2728 wrote to memory of 1376 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2728 wrote to memory of 1376 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 2728 wrote to memory of 1376 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 1376 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\kemelsystmgr.exe C:\Users\Admin\AppData\Local\kemelsystmgr.exe
PID 3504 wrote to memory of 260 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 3504 wrote to memory of 260 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 3504 wrote to memory of 260 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\mstsc.exe
PID 260 wrote to memory of 1168 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe
PID 260 wrote to memory of 1168 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe
PID 260 wrote to memory of 1168 N/A C:\Windows\SysWOW64\mstsc.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\cc38e3ac1ca97aefdaf92643c1dc68f3_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

"C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

"C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

C:\Windows\SysWOW64\mstsc.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\kemelsystmgr.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 www.wwwambyg.com udp

Files

memory/4164-0-0x000000007447E000-0x000000007447F000-memory.dmp

memory/4164-1-0x0000000000C30000-0x0000000000C9E000-memory.dmp

memory/4164-2-0x00000000055E0000-0x00000000055FA000-memory.dmp

memory/4164-3-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/4164-4-0x000000007447E000-0x000000007447F000-memory.dmp

memory/4164-5-0x0000000005A90000-0x0000000005AF6000-memory.dmp

memory/4164-6-0x0000000005BA0000-0x0000000005C32000-memory.dmp

memory/4164-7-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/4164-8-0x0000000006330000-0x00000000068D4000-memory.dmp

memory/4164-12-0x0000000074470000-0x0000000074C20000-memory.dmp

C:\Users\Admin\AppData\Local\kemelsystmgr.exe

MD5 cc38e3ac1ca97aefdaf92643c1dc68f3
SHA1 3f80d544c9e3b789db490a13c86dc5cd61682bc2
SHA256 22542d1aef8c0987be0f91b90e4f70f372cc1b16ed67bbb1582798cac732f538
SHA512 04c876e75e495e1dad18c06d669c2965feaa25d454fa54dc754091effc67c4704a78c10a53185b0cdb4e2cc3b5ca9ab6854632205539e6853dbd84e1b4f79235

memory/1376-16-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/1376-17-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/1376-18-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/4012-19-0x0000000000400000-0x000000000042A000-memory.dmp

memory/1376-21-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/1376-23-0x0000000074470000-0x0000000074C20000-memory.dmp

memory/4012-24-0x00000000015B0000-0x00000000018FA000-memory.dmp

memory/3504-26-0x00000000025C0000-0x00000000026F8000-memory.dmp

memory/260-27-0x00000000009A0000-0x0000000000ADA000-memory.dmp

memory/4012-28-0x0000000000400000-0x000000000042A000-memory.dmp

memory/260-29-0x00000000009A0000-0x0000000000ADA000-memory.dmp

memory/3504-31-0x00000000025C0000-0x00000000026F8000-memory.dmp

memory/3504-33-0x0000000003E90000-0x0000000003F7F000-memory.dmp