Malware Analysis Report

2024-10-19 07:03

Sample ID 240507-ey4k9ace27
Target 1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118
SHA256 b902253ab20c158fbec990c5335d1609a2f467ccc74fa40ab91b6f36cd126a2c
Tags
modiloader 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

b902253ab20c158fbec990c5335d1609a2f467ccc74fa40ab91b6f36cd126a2c

Threat Level: Known bad

The file 1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan

UAC bypass

ModiLoader, DBatLoader

ModiLoader Second Stage

Modiloader family

ModiLoader Second Stage

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Deletes itself

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Uses Volume Shadow Copy service COM API

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-07 04:21

Signatures

ModiLoader Second Stage

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

Modiloader family

modiloader

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-07 04:21

Reported

2024-05-07 04:24

Platform

win7-20231129-en

Max time kernel

144s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

Signatures

ModiLoader, DBatLoader

trojan 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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Deletes itself

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

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-1-5-21-3627615824-4061627003-3019543961-1000\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\1f6dd8abec7ed164e5663c9324f68839_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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_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\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 serde.dyndns.org udp

Files

C:\Windows\mstwain32.exe

MD5 1f6dd8abec7ed164e5663c9324f68839
SHA1 1c0fa8ed470522a45c9b06e1a614d7cf877ee1a9
SHA256 b902253ab20c158fbec990c5335d1609a2f467ccc74fa40ab91b6f36cd126a2c
SHA512 36c8b92dc77caa00ea961ce2b806e35db3d9157a86ed62fa857489800130f2120aea14d686481520639cc3633104dba142e03aad67e27316f69173d911435e13

memory/1328-8-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-12-0x00000000002E0000-0x00000000002E1000-memory.dmp

memory/3060-13-0x00000000005E0000-0x00000000005EE000-memory.dmp

memory/3060-15-0x0000000076400000-0x0000000076401000-memory.dmp

memory/3060-16-0x00000000763F0000-0x00000000764E0000-memory.dmp

memory/3060-17-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-19-0x00000000005E0000-0x00000000005EE000-memory.dmp

memory/3060-18-0x00000000002F0000-0x00000000002F8000-memory.dmp

memory/3060-20-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-23-0x00000000763F0000-0x00000000764E0000-memory.dmp

memory/3060-24-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-27-0x00000000763F0000-0x00000000764E0000-memory.dmp

memory/3060-28-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-31-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-35-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-38-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-41-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-44-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-47-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-50-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-53-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-56-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3060-59-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-07 04:21

Reported

2024-05-07 04:24

Platform

win10v2004-20240419-en

Max time kernel

142s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

Signatures

ModiLoader, DBatLoader

trojan 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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\mstwain32.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-1-5-21-17203666-93769886-2545153620-1000\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\1f6dd8abec7ed164e5663c9324f68839_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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\cmsetac.dll C:\Windows\mstwain32.exe N/A
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\mstwain32.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_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\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\1f6dd8abec7ed164e5663c9324f68839_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 48.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 serde.dyndns.org udp
US 8.8.8.8:53 serde.dyndns.org udp

Files

C:\Windows\mstwain32.exe

MD5 1f6dd8abec7ed164e5663c9324f68839
SHA1 1c0fa8ed470522a45c9b06e1a614d7cf877ee1a9
SHA256 b902253ab20c158fbec990c5335d1609a2f467ccc74fa40ab91b6f36cd126a2c
SHA512 36c8b92dc77caa00ea961ce2b806e35db3d9157a86ed62fa857489800130f2120aea14d686481520639cc3633104dba142e03aad67e27316f69173d911435e13

memory/1056-10-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1056-9-0x0000000000550000-0x0000000000551000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/2648-18-0x0000000000820000-0x0000000000821000-memory.dmp

C:\Windows\cmsetac.dll

MD5 c3db761f339e38c7f3fbf9693fec7f46
SHA1 77d91c8cd2bd9284c63f6b03673a013c7d4b12f1
SHA256 a87a2ca3d6499981f0767c9459d773d658c85f852ea811f5a1374dcab17d3d12
SHA512 e4b03052cef0b0e749bd78297fdfee86390fcf1bd84e552538a94401b515fe7fc4881dc3ac8024847ff007aa90a9f74413bb653f7bf37ddd40dc109640652bbe

memory/2648-22-0x00000000024E0000-0x00000000024EE000-memory.dmp

memory/2648-25-0x0000000002490000-0x0000000002491000-memory.dmp

memory/2648-26-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-28-0x00000000024E0000-0x00000000024EE000-memory.dmp

memory/2648-27-0x0000000000870000-0x0000000000878000-memory.dmp

memory/2648-29-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-32-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-35-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-38-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-41-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-44-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-47-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-50-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-53-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-56-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-59-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-62-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2648-65-0x0000000000400000-0x000000000044B000-memory.dmp