Malware Analysis Report

2024-08-06 14:13

Sample ID 240617-lr1pcavgjf
Target b7f8816f98231848635192696ec1d2ad_JaffaCakes118
SHA256 cd968d7bd3ecb87b2871973d7272d2faa3029be6b8943ddf21242c8db5a29f72
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

cd968d7bd3ecb87b2871973d7272d2faa3029be6b8943ddf21242c8db5a29f72

Threat Level: Known bad

The file b7f8816f98231848635192696ec1d2ad_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan

ModiLoader, DBatLoader

Modiloader family

ModiLoader Second Stage

UAC bypass

ModiLoader Second Stage

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Deletes itself

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

System policy modification

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

2024-06-17 09:46

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 09:46

Reported

2024-06-17 09:49

Platform

win7-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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 1920 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1920 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1920 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1920 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe"

Network

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

Files

memory/1920-0-0x00000000002F0000-0x00000000002F1000-memory.dmp

C:\Windows\mstwain32.exe

MD5 b7f8816f98231848635192696ec1d2ad
SHA1 30b4e445156ce7264ba8786ddb62eb8bf9262a71
SHA256 cd968d7bd3ecb87b2871973d7272d2faa3029be6b8943ddf21242c8db5a29f72
SHA512 1b611bb0dbb07b9dd00f1bce222aa8b21008b3d738254d6323361cbb5900d071ef2d25d4d766d7fa0de857b7dc0fed0bcc26c2df27a3626512b04eee962dd923

memory/1920-9-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-13-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2044-14-0x0000000002570000-0x000000000257E000-memory.dmp

memory/2044-17-0x0000000076C30000-0x0000000076D20000-memory.dmp

memory/2044-16-0x0000000076C40000-0x0000000076C41000-memory.dmp

memory/2044-18-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-20-0x0000000002570000-0x000000000257E000-memory.dmp

memory/2044-19-0x00000000002C0000-0x00000000002C8000-memory.dmp

memory/2044-21-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-24-0x0000000076C30000-0x0000000076D20000-memory.dmp

memory/2044-25-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-28-0x0000000076C30000-0x0000000076D20000-memory.dmp

memory/2044-29-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-32-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-36-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-39-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-42-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-45-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-48-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-51-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-54-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-57-0x0000000000400000-0x000000000044B000-memory.dmp

memory/2044-60-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 09:46

Reported

2024-06-17 09:49

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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 4888 wrote to memory of 1420 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 4888 wrote to memory of 1420 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 4888 wrote to memory of 1420 N/A C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b7f8816f98231848635192696ec1d2ad_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\b7f8816f98231848635192696ec1d2ad_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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
GB 142.250.187.234:443 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 216.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 turkdur.no-ip.biz udp
US 8.8.8.8:53 9.173.189.20.in-addr.arpa udp

Files

memory/4888-0-0x0000000000400000-0x000000000044B000-memory.dmp

memory/4888-1-0x0000000000720000-0x0000000000721000-memory.dmp

C:\Windows\mstwain32.exe

MD5 b7f8816f98231848635192696ec1d2ad
SHA1 30b4e445156ce7264ba8786ddb62eb8bf9262a71
SHA256 cd968d7bd3ecb87b2871973d7272d2faa3029be6b8943ddf21242c8db5a29f72
SHA512 1b611bb0dbb07b9dd00f1bce222aa8b21008b3d738254d6323361cbb5900d071ef2d25d4d766d7fa0de857b7dc0fed0bcc26c2df27a3626512b04eee962dd923

memory/4888-11-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Windows\ntdtcstp.dll

MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

memory/1420-19-0x00000000020D0000-0x00000000020D1000-memory.dmp

C:\Windows\cmsetac.dll

MD5 2b04cbdb311711b202924a68963fda1b
SHA1 bc3aeea8b2e9cd25beda8750ea7b43b2e66f263b
SHA256 7d4c6d26d83da626c17d7f22baa585eb26feea67a8a6cb54376cef47b8e69a9e
SHA512 3db7a80c44c62bfec106c83529684e197b2c8f13074b83dc4c92184201db49c4e38f162842531dc470f3c578073691a37dcaad593386f60c33a19f93966b9a15

memory/1420-23-0x0000000003220000-0x000000000322E000-memory.dmp

memory/1420-26-0x00000000030D0000-0x00000000030D1000-memory.dmp

memory/1420-27-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-29-0x0000000003220000-0x000000000322E000-memory.dmp

memory/1420-28-0x0000000002120000-0x0000000002128000-memory.dmp

memory/1420-30-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-33-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-36-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-39-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-42-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-45-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-48-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-51-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-54-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-57-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-60-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1420-63-0x0000000000400000-0x000000000044B000-memory.dmp