Malware Analysis Report

2024-08-06 14:08

Sample ID 240615-fspqkszckc
Target acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118
SHA256 33397deb52aa3ca0564595712088f36d2d55c5c6018f5d63ee8d3d10a8ce3e4a
Tags
modiloader evasion persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

33397deb52aa3ca0564595712088f36d2d55c5c6018f5d63ee8d3d10a8ce3e4a

Threat Level: Known bad

The file acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan

ModiLoader Second Stage

UAC bypass

ModiLoader, DBatLoader

Modiloader family

ModiLoader Second Stage

Executes dropped EXE

Checks computer location settings

Deletes itself

Loads dropped DLL

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

System policy modification

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Uses Volume Shadow Copy service COM API

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Impair Defenses
T1562
Disable or Modify Tools
T1562.001
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 05:08

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

2024-06-15 05:08

Reported

2024-06-15 05:10

Platform

win7-20240611-en

Max time kernel

143s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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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-1-5-21-1340930862-1405011213-2821322012-1000\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:\Windows\mstwain32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\mstwain32.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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\acf9f41e5b3c8b048b12f151917af9ca_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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1748 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1748 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1748 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1748 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe

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\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp

Files

C:\Windows\mstwain32.exe

MD5 acf9f41e5b3c8b048b12f151917af9ca
SHA1 9bf7bca53c2549df55386f34e6622eea5e3f5761
SHA256 33397deb52aa3ca0564595712088f36d2d55c5c6018f5d63ee8d3d10a8ce3e4a
SHA512 3ef938fa9fac7db25738b1631c315f03f027438113e925b028283cb5debd3e40f70fe8303cd74daf23281e6a8bcb72cd202548bac04005c3899ddd767bf92899

memory/1748-8-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-12-0x00000000002E0000-0x00000000002E1000-memory.dmp

memory/2840-13-0x0000000001ED0000-0x0000000001EDE000-memory.dmp

memory/2840-15-0x0000000075CC0000-0x0000000075CC1000-memory.dmp

memory/2840-16-0x0000000075CB0000-0x0000000075DA0000-memory.dmp

memory/2840-17-0x0000000075CB0000-0x0000000075DA0000-memory.dmp

memory/2840-18-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-20-0x0000000001ED0000-0x0000000001EDE000-memory.dmp

memory/2840-19-0x00000000002F0000-0x00000000002F8000-memory.dmp

memory/2840-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-24-0x0000000075CB0000-0x0000000075DA0000-memory.dmp

memory/2840-25-0x0000000075CB0000-0x0000000075DA0000-memory.dmp

memory/2840-26-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-29-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-32-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-36-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-39-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-42-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-45-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-48-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-51-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-54-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-57-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2840-60-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 05:08

Reported

2024-06-15 05:10

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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
N/A N/A N/A N/A
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N/A N/A N/A N/A
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N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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-1-5-21-2080292272-204036150-2159171770-1000\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\acf9f41e5b3c8b048b12f151917af9ca_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\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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\acf9f41e5b3c8b048b12f151917af9ca_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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3952 wrote to memory of 400 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 3952 wrote to memory of 400 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 3952 wrote to memory of 400 N/A C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe C:\Windows\mstwain32.exe

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\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\acf9f41e5b3c8b048b12f151917af9ca_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\acf9f41e5b3c8b048b12f151917af9ca_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 ikoiko5.no-ip.org udp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
GE 95.104.86.118:15963 ikoiko5.no-ip.org tcp
US 8.8.8.8:53 udp

Files

C:\Windows\mstwain32.exe

MD5 acf9f41e5b3c8b048b12f151917af9ca
SHA1 9bf7bca53c2549df55386f34e6622eea5e3f5761
SHA256 33397deb52aa3ca0564595712088f36d2d55c5c6018f5d63ee8d3d10a8ce3e4a
SHA512 3ef938fa9fac7db25738b1631c315f03f027438113e925b028283cb5debd3e40f70fe8303cd74daf23281e6a8bcb72cd202548bac04005c3899ddd767bf92899

memory/3952-9-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/400-17-0x0000000000730000-0x0000000000731000-memory.dmp

memory/400-21-0x00000000030E0000-0x00000000030EE000-memory.dmp

C:\Windows\cmsetac.dll

MD5 02bcea8cd0686f36adcf7af918845a0a
SHA1 0d3a147044cb5c17f6745f586380156ef44e9198
SHA256 a88e8f6238da2d45f2c1dfe89bf269ab209de6156715c15c06dce6d98d4cf5b3
SHA512 574dd3b5d23fdf2c49b622d58c8d976517d007bfa049cb1fd2167a64c676db7c020491ec22a4090551299e60e1c0bf9d3a7edafd7ef44e716640db1f1d0f8ad0

memory/400-24-0x0000000002F90000-0x0000000002F91000-memory.dmp

memory/400-25-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-27-0x00000000030E0000-0x00000000030EE000-memory.dmp

memory/400-26-0x0000000000740000-0x0000000000748000-memory.dmp

memory/400-28-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-31-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-34-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-37-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-40-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-43-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-46-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-49-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-52-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-55-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-58-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-61-0x0000000000400000-0x000000000044B000-memory.dmp

memory/400-64-0x0000000000400000-0x000000000044B000-memory.dmp