Malware Analysis Report

2025-01-22 12:43

Sample ID 240622-2hphqaxere
Target 042cf634bc6848bdeb913e437d64e7be_JaffaCakes118
SHA256 7821c8bb398df90703947a6e5c45c0a830d3ff487e1d39e7fa34cbdd087b91bd
Tags
upx aspackv2 persistence
score
8/10

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
8/10

SHA256

7821c8bb398df90703947a6e5c45c0a830d3ff487e1d39e7fa34cbdd087b91bd

Threat Level: Likely malicious

The file 042cf634bc6848bdeb913e437d64e7be_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

upx aspackv2 persistence

Server Software Component: Terminal Services DLL

UPX packed file

ASPack v2.12-2.42

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 22:35

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 22:35

Reported

2024-06-22 22:37

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

Signatures

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll" C:\56f1038c.exe N/A

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\56f1038c.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\56f1038c.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

UPX packed file

upx
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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll C:\56f1038c.exe N/A
File opened for modification C:\Windows\SysWOW64\0EE604B8.tmp C:\56f1038c.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\56f1038c.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2188 wrote to memory of 1708 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1708 wrote to memory of 1740 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe
PID 1708 wrote to memory of 1740 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe
PID 1708 wrote to memory of 1740 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe
PID 1708 wrote to memory of 1740 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

C:\56f1038c.exe

C:\56f1038c.exe

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs

Network

N/A

Files

memory/1708-0-0x0000000075320000-0x000000007535D000-memory.dmp

memory/1708-4-0x0000000075310000-0x000000007534D000-memory.dmp

memory/1708-3-0x0000000075320000-0x000000007535D000-memory.dmp

C:\56f1038c.exe

MD5 6b222c20acbdc5a0919ced7d62ae127e
SHA1 e5548137ef1150423b571fa0e7ceeb62c7190f56
SHA256 582dd6d194571b1399686acd934336238108d1e18e0756223d318d552539bf5a
SHA512 97cb5023f43c91ecc3577f270c54f486fb1246970f019a88eb7e2ee77d94b2e37a85a20b70989aca85ca7c18661346f5499e46d8a069f1ef2ad4b9d0233cb815

memory/1708-2-0x00000000752D0000-0x000000007530D000-memory.dmp

memory/1740-12-0x0000000001120000-0x0000000001146000-memory.dmp

memory/1708-11-0x0000000000260000-0x0000000000286000-memory.dmp

memory/1708-10-0x0000000000260000-0x0000000000286000-memory.dmp

memory/1740-14-0x0000000001120000-0x0000000001146000-memory.dmp

memory/1740-13-0x0000000001120000-0x0000000001146000-memory.dmp

memory/1740-18-0x0000000077CFF000-0x0000000077D00000-memory.dmp

memory/1740-19-0x00000000776D9000-0x00000000776DB000-memory.dmp

\Windows\SysWOW64\0EE604B8.tmp

MD5 d9c481df51944891331899940034a2fd
SHA1 1d86eeec53bc1a4a5e28b69e3faec885dd48fdfa
SHA256 e5d4623258e0c70c13ecc444f811c587e7b8191aaefef7773095d082be94737f
SHA512 3a3673a3e10d3c4aa74eb902ad3eebc9e20df739b6b5b3c58922e37271a5deff92f6a4c4c790e1e0ba2d3db3f2e920a3253fddf33250fede8aa46552ec3b427a

memory/2644-28-0x0000000075110000-0x0000000075136000-memory.dmp

C:\Users\Infotmp.txt

MD5 03b738ca70292b9d8056e11490a6c71e
SHA1 b1be291c9cc934be4cb9af36a662feca28e69439
SHA256 e0b42af5cbbfac565ede2b4afb9933e90186dceaa3b1b806a6d37893b9cb1db1
SHA512 fa39f8f7f2ab2bf6a61946d2f37b1f5d63c890b4f8c9a3081d33ac02e6e77c6b16ad9b185dd4dd0bfda3262a18f85b0961127791ac6a47e2186276f6a11894ac

memory/2644-26-0x0000000075110000-0x0000000075136000-memory.dmp

memory/2644-25-0x0000000075110000-0x0000000075136000-memory.dmp

memory/1740-31-0x0000000001120000-0x0000000001146000-memory.dmp

memory/1708-33-0x0000000075310000-0x000000007534D000-memory.dmp

memory/1708-32-0x0000000075310000-0x000000007534D000-memory.dmp

memory/1708-34-0x00000000776C0000-0x0000000077720000-memory.dmp

memory/1708-35-0x0000000000260000-0x0000000000286000-memory.dmp

memory/1708-36-0x00000000776C0000-0x0000000077720000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 22:35

Reported

2024-06-22 22:37

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

94s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

Signatures

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll" C:\56f1038c.exe N/A

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\56f1038c.exe N/A

Loads dropped DLL

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

UPX packed file

upx
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
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\1D660D80.tmp C:\56f1038c.exe N/A
File opened for modification C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll C:\56f1038c.exe N/A

Program crash

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\56f1038c.exe N/A
N/A N/A C:\56f1038c.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4372 wrote to memory of 3028 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4372 wrote to memory of 3028 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4372 wrote to memory of 3028 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3028 wrote to memory of 3076 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe
PID 3028 wrote to memory of 3076 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe
PID 3028 wrote to memory of 3076 N/A C:\Windows\SysWOW64\rundll32.exe C:\56f1038c.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1

C:\56f1038c.exe

C:\56f1038c.exe

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3028 -ip 3028

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 660

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.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 98.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/3028-0-0x00000000752F0000-0x000000007532D000-memory.dmp

C:\56f1038c.exe

MD5 6b222c20acbdc5a0919ced7d62ae127e
SHA1 e5548137ef1150423b571fa0e7ceeb62c7190f56
SHA256 582dd6d194571b1399686acd934336238108d1e18e0756223d318d552539bf5a
SHA512 97cb5023f43c91ecc3577f270c54f486fb1246970f019a88eb7e2ee77d94b2e37a85a20b70989aca85ca7c18661346f5499e46d8a069f1ef2ad4b9d0233cb815

memory/3076-5-0x00000000006F0000-0x0000000000716000-memory.dmp

memory/3076-7-0x00000000006F0000-0x0000000000716000-memory.dmp

memory/3076-6-0x00000000006F0000-0x0000000000716000-memory.dmp

memory/3076-12-0x0000000076B5C000-0x0000000076B5D000-memory.dmp

memory/3076-11-0x00000000778C2000-0x00000000778C3000-memory.dmp

\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

MD5 d9c481df51944891331899940034a2fd
SHA1 1d86eeec53bc1a4a5e28b69e3faec885dd48fdfa
SHA256 e5d4623258e0c70c13ecc444f811c587e7b8191aaefef7773095d082be94737f
SHA512 3a3673a3e10d3c4aa74eb902ad3eebc9e20df739b6b5b3c58922e37271a5deff92f6a4c4c790e1e0ba2d3db3f2e920a3253fddf33250fede8aa46552ec3b427a

memory/3668-16-0x00000000750C0000-0x00000000750E6000-memory.dmp

memory/3668-17-0x00000000750C0000-0x00000000750E6000-memory.dmp

memory/3668-18-0x00000000750C0000-0x00000000750E6000-memory.dmp

memory/3028-20-0x00000000752F0000-0x000000007532D000-memory.dmp

memory/3668-24-0x00000000750C0000-0x00000000750E6000-memory.dmp

memory/3028-22-0x00000000752F0000-0x000000007532D000-memory.dmp

memory/3076-21-0x00000000006F0000-0x0000000000716000-memory.dmp

C:\Users\Infotmp.txt

MD5 a19c413c06e112146189e0d8f0fe0270
SHA1 04b2c091267d74bf4a9baf1cd8dbdf07fdd2eed4
SHA256 ac0ad3dadc2453791c5ed5d247fa6f2d404913868b896a1c0769c576b3db3af1
SHA512 cb73b1af078e7185f8dfcee4f2fc32ff4adb0c189ed969b41866794c3fee7f6330e110d2a5b5914f8ffdb38c9b3bed45c422dabc320efe84d2e7bcd59a7cfbab