Malware Analysis Report

2024-08-06 14:38

Sample ID 240522-31788aea2z
Target 691343b44b33b95e16250d29a8a888d7_JaffaCakes118
SHA256 0dd42d20a7e238c1d39138d3d7898f4b12fbe9f86587ee7dbbb27b93aaaf9c32
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

0dd42d20a7e238c1d39138d3d7898f4b12fbe9f86587ee7dbbb27b93aaaf9c32

Threat Level: Known bad

The file 691343b44b33b95e16250d29a8a888d7_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan

Modiloader family

ModiLoader, DBatLoader

ModiLoader Second Stage

UAC bypass

ModiLoader Second Stage

Deletes itself

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

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

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

System policy modification

Suspicious use of SetWindowsHookEx

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

2024-05-22 23:59

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

2024-05-22 23:59

Reported

2024-05-23 00:02

Platform

win7-20240508-en

Max time kernel

146s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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-1-5-21-268080393-3149932598-1824759070-1000\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\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_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 1744 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1744 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1744 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1744 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe"

Network

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

Files

C:\Windows\mstwain32.exe

MD5 691343b44b33b95e16250d29a8a888d7
SHA1 561e94dfb321aa5f17f30f1dc58b2ece398e6287
SHA256 0dd42d20a7e238c1d39138d3d7898f4b12fbe9f86587ee7dbbb27b93aaaf9c32
SHA512 adc000c944f583188e4ff23c23c73cc2454b2f244ac3bde468459f64c701f2e7308d41daabaf79353c35c99cddebffc41235231961b78244b3ce561ffc8eef46

memory/1744-8-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-12-0x0000000000320000-0x0000000000321000-memory.dmp

memory/1232-13-0x0000000002010000-0x000000000201E000-memory.dmp

memory/1232-15-0x00000000753B0000-0x00000000753B1000-memory.dmp

memory/1232-16-0x00000000753A0000-0x0000000075490000-memory.dmp

memory/1232-17-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-19-0x0000000002010000-0x000000000201E000-memory.dmp

memory/1232-18-0x0000000000370000-0x0000000000378000-memory.dmp

memory/1232-20-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-23-0x00000000753A0000-0x0000000075490000-memory.dmp

memory/1232-24-0x00000000753A0000-0x0000000075490000-memory.dmp

memory/1232-25-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-28-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-31-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-35-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-38-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-41-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-44-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-47-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-50-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-53-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-56-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1232-59-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-22 23:59

Reported

2024-05-23 00:02

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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-1-5-21-3808065738-1666277613-1125846146-1000\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\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_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 2720 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 2720 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 2720 wrote to memory of 3384 N/A C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\691343b44b33b95e16250d29a8a888d7_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\691343b44b33b95e16250d29a8a888d7_JaffaCakes118.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4160 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 patch.no-ip.biz udp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 patch.no-ip.biz udp
US 8.8.8.8:53 26.173.189.20.in-addr.arpa udp

Files

memory/2720-0-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Windows\mstwain32.exe

MD5 691343b44b33b95e16250d29a8a888d7
SHA1 561e94dfb321aa5f17f30f1dc58b2ece398e6287
SHA256 0dd42d20a7e238c1d39138d3d7898f4b12fbe9f86587ee7dbbb27b93aaaf9c32
SHA512 adc000c944f583188e4ff23c23c73cc2454b2f244ac3bde468459f64c701f2e7308d41daabaf79353c35c99cddebffc41235231961b78244b3ce561ffc8eef46

memory/2720-10-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/3384-18-0x00000000005C0000-0x00000000005C1000-memory.dmp

memory/3384-22-0x0000000002170000-0x000000000217E000-memory.dmp

C:\Windows\cmsetac.dll

MD5 9ab4a63fa6ffa4848eccd890af665389
SHA1 bb8610d8f777a62cc4d1ca602d9b6677b10ce47d
SHA256 e1429b601db5e7141e21e93edda1d3dad17208133bbba696758370a3c35bf72e
SHA512 814a27c29bfa49185213e52369c3a8dcfe60bc2f728c3a2afbfd572a61d3fa07fd273483ce41c09369877a877d83d6a9e1bd794d2aeef3de4ed25abf50c4b84e

memory/3384-25-0x0000000002160000-0x0000000002161000-memory.dmp

memory/3384-26-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-28-0x0000000002170000-0x000000000217E000-memory.dmp

memory/3384-27-0x00000000005D0000-0x00000000005D8000-memory.dmp

memory/3384-29-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-32-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-35-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-38-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-41-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-44-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-47-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-50-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-53-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-56-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-59-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3384-62-0x0000000000400000-0x000000000044B000-memory.dmp