Malware Analysis Report

2025-06-16 06:55

Sample ID 241104-c4rsjazra1
Target 8eb99bfa4661173013caa33ef3480042_JaffaCakes118
SHA256 61e6786a5789b9e867a315d45c37c759ddf72356ffde6c928f1ef5e01e4d2c21
Tags
upx modiloader discovery evasion persistence 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

61e6786a5789b9e867a315d45c37c759ddf72356ffde6c928f1ef5e01e4d2c21

Threat Level: Known bad

The file 8eb99bfa4661173013caa33ef3480042_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx modiloader discovery evasion persistence trojan

Modiloader family

UAC bypass

ModiLoader, DBatLoader

ModiLoader Second Stage

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Checks whether UAC is enabled

UPX packed file

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

System policy modification

Suspicious use of SetWindowsHookEx

Uses Volume Shadow Copy service COM API

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 02:38

Signatures

UPX packed file

upx
Description Indicator Process Target
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Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 02:38

Reported

2024-11-04 04:14

Platform

win7-20240903-en

Max time kernel

145s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Modiloader family

modiloader

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
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Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" C:\Windows\mstwain32.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\mstwain32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\mstwain32.exe N/A
File created C:\Windows\cmsetac.dll C:\Windows\mstwain32.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\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\mstwain32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 zencefilim77.no-ip.biz udp

Files

memory/2424-0-0x0000000000400000-0x000000000047A000-memory.dmp

memory/2424-4-0x0000000002DA0000-0x0000000002DB0000-memory.dmp

C:\Windows\mstwain32.exe

MD5 8eb99bfa4661173013caa33ef3480042
SHA1 10f8c3bc07d0dba10f0b0589c2b489c87bce944e
SHA256 61e6786a5789b9e867a315d45c37c759ddf72356ffde6c928f1ef5e01e4d2c21
SHA512 0d888aef5127bc5c49f08258b29f49d0c677e697a5ae64fa04e31810002e08ca59588c810fb1c43cba9522b24338e325120cec39fcd82cac5479b5b05da5de75

memory/2424-11-0x0000000000400000-0x000000000047A000-memory.dmp

memory/2424-9-0x0000000003020000-0x000000000309A000-memory.dmp

memory/1528-15-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/1528-16-0x00000000024A0000-0x00000000024AE000-memory.dmp

memory/1528-18-0x00000000775F0000-0x00000000775F1000-memory.dmp

memory/1528-19-0x00000000775E0000-0x00000000776D0000-memory.dmp

memory/1528-20-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-21-0x00000000775E0000-0x00000000776D0000-memory.dmp

memory/1528-22-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-24-0x00000000024A0000-0x00000000024AE000-memory.dmp

memory/1528-25-0x00000000775E0000-0x00000000776D0000-memory.dmp

memory/1528-23-0x00000000002C0000-0x00000000002C8000-memory.dmp

memory/1528-26-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-29-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-32-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-35-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-39-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-42-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-45-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-48-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-51-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-54-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-57-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-60-0x0000000000400000-0x000000000047A000-memory.dmp

memory/1528-63-0x0000000000400000-0x000000000047A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-04 02:38

Reported

2024-11-04 04:17

Platform

win10v2004-20241007-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Modiloader family

modiloader

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

ModiLoader Second Stage

Description Indicator Process Target
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Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" C:\Windows\mstwain32.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\mstwain32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\mstwain32.exe N/A
File created C:\Windows\cmsetac.dll C:\Windows\mstwain32.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\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\mstwain32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\mstwain32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.exe N/A
N/A N/A C:\Windows\mstwain32.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\8eb99bfa4661173013caa33ef3480042_JaffaCakes118.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 zencefilim77.no-ip.biz 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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 13.227.111.52.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 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp
US 8.8.8.8:53 zencefilim77.no-ip.biz udp

Files

memory/2056-0-0x0000000000400000-0x000000000047A000-memory.dmp

C:\Windows\mstwain32.exe

MD5 8eb99bfa4661173013caa33ef3480042
SHA1 10f8c3bc07d0dba10f0b0589c2b489c87bce944e
SHA256 61e6786a5789b9e867a315d45c37c759ddf72356ffde6c928f1ef5e01e4d2c21
SHA512 0d888aef5127bc5c49f08258b29f49d0c677e697a5ae64fa04e31810002e08ca59588c810fb1c43cba9522b24338e325120cec39fcd82cac5479b5b05da5de75

memory/2056-11-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

memory/4416-10-0x0000000000400000-0x000000000047A000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/2056-15-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-21-0x0000000000500000-0x0000000000501000-memory.dmp

C:\Windows\cmsetac.dll

MD5 74046296beae07f57b1af1c8516bf869
SHA1 1f9c1add40b8a945a3d0621e7564ae5a3910aedb
SHA256 aa151cf3c30ca27f0301a16333f73c8082352c1f0adde2bb0327db4769e713dd
SHA512 68c627ecdcfad07bfb5fc9d13166bbf1ca733887343d194c409c5d2e3b3543ccd08e195eb7347fb3fb288cb9c1fc464dd2f194df2b6f6e0401d928901ae3e75a

memory/4416-25-0x0000000003110000-0x000000000311E000-memory.dmp

memory/4416-28-0x0000000002FC0000-0x0000000002FC1000-memory.dmp

memory/4416-29-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-30-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-31-0x0000000000510000-0x0000000000518000-memory.dmp

memory/4416-32-0x0000000003110000-0x000000000311E000-memory.dmp

memory/4416-33-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-36-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-39-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-42-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-45-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-48-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-51-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-54-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-57-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-60-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-63-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-66-0x0000000000400000-0x000000000047A000-memory.dmp

memory/4416-69-0x0000000000400000-0x000000000047A000-memory.dmp