Malware Analysis Report

2024-08-06 14:16

Sample ID 240617-dxckpssale
Target b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118
SHA256 e08cb3abb375fa302d406352c370e563d59d2d7cf382afb9f8c3c1a6f8d8deda
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

e08cb3abb375fa302d406352c370e563d59d2d7cf382afb9f8c3c1a6f8d8deda

Threat Level: Known bad

The file b68895fafc74a0af8638a3cf9031b4cf_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

Checks computer location settings

Executes dropped EXE

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 SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System policy modification

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

2024-06-17 03:22

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

2024-06-17 03:22

Reported

2024-06-17 03:25

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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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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-1-5-21-3691908287-3775019229-3534252667-1000\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\b68895fafc74a0af8638a3cf9031b4cf_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\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.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 1736 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1736 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1736 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1736 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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

Processes

C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe"

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp

Files

memory/1736-0-0x00000000001F0000-0x00000000001F1000-memory.dmp

C:\Windows\mstwain32.exe

MD5 b68895fafc74a0af8638a3cf9031b4cf
SHA1 26021c4cc8f937860e4de3915f914f211250166c
SHA256 e08cb3abb375fa302d406352c370e563d59d2d7cf382afb9f8c3c1a6f8d8deda
SHA512 15d0e3ac76aff4bd7cc2f3bc05706ecd18744d7ff288ad768dc4c17f7a15a5489d612b8bea0f0490707a1900d13af92d6aa63afe8dea32929a2f043102cc7551

memory/1736-9-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-13-0x00000000003B0000-0x00000000003B1000-memory.dmp

memory/1744-14-0x0000000002330000-0x000000000233E000-memory.dmp

memory/1744-16-0x0000000077220000-0x0000000077221000-memory.dmp

memory/1744-17-0x0000000077210000-0x0000000077300000-memory.dmp

memory/1744-18-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-20-0x0000000002330000-0x000000000233E000-memory.dmp

memory/1744-19-0x00000000004C0000-0x00000000004C8000-memory.dmp

memory/1744-21-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-24-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-27-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-30-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-33-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-36-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-39-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-42-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-45-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-48-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-51-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-54-0x0000000000400000-0x000000000044C000-memory.dmp

memory/1744-57-0x0000000000400000-0x000000000044C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 03:22

Reported

2024-06-17 03:25

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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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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\b68895fafc74a0af8638a3cf9031b4cf_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-1-5-21-3808065738-1666277613-1125846146-1000\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\b68895fafc74a0af8638a3cf9031b4cf_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\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.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 1424 wrote to memory of 2004 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1424 wrote to memory of 2004 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1424 wrote to memory of 2004 N/A C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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

Processes

C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_JaffaCakes118.exe"

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\b68895fafc74a0af8638a3cf9031b4cf_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=4832 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
GB 142.250.200.42:443 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 208.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 kuyuser44.no-ip.biz udp
US 8.8.8.8:53 26.178.89.13.in-addr.arpa udp

Files

memory/1424-0-0x0000000000A20000-0x0000000000A21000-memory.dmp

C:\Windows\mstwain32.exe

MD5 b68895fafc74a0af8638a3cf9031b4cf
SHA1 26021c4cc8f937860e4de3915f914f211250166c
SHA256 e08cb3abb375fa302d406352c370e563d59d2d7cf382afb9f8c3c1a6f8d8deda
SHA512 15d0e3ac76aff4bd7cc2f3bc05706ecd18744d7ff288ad768dc4c17f7a15a5489d612b8bea0f0490707a1900d13af92d6aa63afe8dea32929a2f043102cc7551

memory/1424-10-0x0000000000400000-0x000000000044C000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/2004-18-0x00000000005E0000-0x00000000005E1000-memory.dmp

C:\Windows\cmsetac.dll

MD5 7c3ff4d4d394fde7c693d04c488a55f8
SHA1 ae2b2acc7e91a910f9075e0e095b528e97827ba4
SHA256 4878bf71fd37ffac1fd6f5153357298544d0ef1f3a114c1f0451befcb85c59a8
SHA512 33c601d9e706cff0c3dce8280b040c361aa51004fd20b51946469b6a02453def5a7aad1e5f58bec3435cc6e25470155d07f71dc0f81ec642efc53215d7be316a

memory/2004-22-0x00000000023A0000-0x00000000023AE000-memory.dmp

memory/2004-25-0x0000000002350000-0x0000000002351000-memory.dmp

memory/2004-26-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-28-0x00000000023A0000-0x00000000023AE000-memory.dmp

memory/2004-27-0x00000000005F0000-0x00000000005F8000-memory.dmp

memory/2004-29-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-32-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-35-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-38-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-41-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-44-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-47-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-50-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-53-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-56-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-59-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2004-62-0x0000000000400000-0x000000000044C000-memory.dmp