Malware Analysis Report

2025-08-10 22:43

Sample ID 250127-zmvt7awjal
Target JaffaCakes118_439042d2f601f4f8773a4afa76021030
SHA256 db5394366ff0b2b21dbdec994201550dca9b5ae5a26c2e0bbe68e782e1642efd
Tags
defense_evasion discovery
score
7/10

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
7/10

SHA256

db5394366ff0b2b21dbdec994201550dca9b5ae5a26c2e0bbe68e782e1642efd

Threat Level: Shows suspicious behavior

The file JaffaCakes118_439042d2f601f4f8773a4afa76021030 was found to be: Shows suspicious behavior.

Malicious Activity Summary

defense_evasion discovery

Checks computer location settings

Deletes itself

Executes dropped EXE

Loads dropped DLL

Indicator Removal: File Deletion

Drops file in System32 directory

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-27 20:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-27 20:50

Reported

2025-01-27 20:53

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

Command Line

winlogon.exe

Signatures

Deletes itself

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

Executes dropped EXE

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

Indicator Removal: File Deletion

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\ldB97F.tmp C:\Windows\SysWOW64\mscornet.exe N/A
File created C:\Windows\SysWOW64\mscornet.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.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:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mscornet.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\mscornet.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe"

C:\Windows\SysWOW64\mscornet.exe

"C:\Windows\system32\mscornet.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE > nul

Network

N/A

Files

C:\Windows\SysWOW64\mscornet.exe

MD5 153a1b76ddc3423afa6eb057ba73e69b
SHA1 c2b3990f8424b304b65873e450d3fb3d77c1a93f
SHA256 38dad675433c146bf4bff7c32e9e5b0ac5376d24aa4ede6073d97374084e03b1
SHA512 e86207fc4417980419f51a19e71a6624289c49273e8c67dc6a7c257c3d65272fd2657803d1471cb8a034a0eee59f652530e1af011a68a81c3140b60d9bcb171c

memory/432-10-0x0000000000160000-0x0000000000161000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-27 20:50

Reported

2025-01-28 09:04

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

winlogon.exe

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A

Executes dropped EXE

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

Indicator Removal: File Deletion

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mscornet.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
File created C:\Windows\SysWOW64\ldA289.tmp C:\Windows\SysWOW64\mscornet.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\mscornet.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\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\mscornet.exe N/A

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439042d2f601f4f8773a4afa76021030.exe"

C:\Windows\SysWOW64\mscornet.exe

"C:\Windows\system32\mscornet.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 244.160.67.23.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 35.34.16.2.in-addr.arpa udp
US 8.8.8.8:53 218.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 22.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 89.16.208.104.in-addr.arpa udp

Files

C:\Windows\SysWOW64\mscornet.exe

MD5 153a1b76ddc3423afa6eb057ba73e69b
SHA1 c2b3990f8424b304b65873e450d3fb3d77c1a93f
SHA256 38dad675433c146bf4bff7c32e9e5b0ac5376d24aa4ede6073d97374084e03b1
SHA512 e86207fc4417980419f51a19e71a6624289c49273e8c67dc6a7c257c3d65272fd2657803d1471cb8a034a0eee59f652530e1af011a68a81c3140b60d9bcb171c