Malware Analysis Report

2024-08-06 14:19

Sample ID 240619-z5s4basaqe
Target 008a6a0161dcb313f73fd094808c7e87_JaffaCakes118
SHA256 04782141431a47986c14700b864761952f0b46581f4f39b826410782d4103c06
Tags
themida 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

04782141431a47986c14700b864761952f0b46581f4f39b826410782d4103c06

Threat Level: Known bad

The file 008a6a0161dcb313f73fd094808c7e87_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

themida modiloader evasion persistence trojan

ModiLoader, DBatLoader

UAC bypass

ModiLoader Second Stage

Executes dropped EXE

Themida packer

Checks whether UAC is enabled

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

System policy modification

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

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
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-19 21:18

Signatures

Themida packer

themida
Description Indicator Process Target
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Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 21:18

Reported

2024-06-19 21:20

Platform

win7-20240611-en

Max time kernel

143s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_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

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Executes dropped EXE

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

Themida packer

themida
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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\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_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
File created C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_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 1856 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1856 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1856 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe C:\Windows\mstwain32.exe
PID 1856 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_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\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\mstwain32.exe

"C:\Windows\mstwain32.exe"

Network

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

Files

memory/1856-0-0x0000000000260000-0x0000000000261000-memory.dmp

memory/1856-1-0x0000000000300000-0x00000000003BB000-memory.dmp

memory/1856-2-0x0000000000401000-0x000000000041C000-memory.dmp

C:\Windows\mstwain32.exe

MD5 008a6a0161dcb313f73fd094808c7e87
SHA1 f4618b713fb0b1cafde89bbcfb5560e4697775b9
SHA256 04782141431a47986c14700b864761952f0b46581f4f39b826410782d4103c06
SHA512 b0fad4acf332d34b4380c9cb5ecf3b3ed35115c965d4070bb0fa95748b1f16e588b2778f4f144df10b70222c54522bd4ad97f8633b877b097abf3852ae36eb7b

memory/1348-12-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1856-11-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-13-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-14-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-18-0x0000000004600000-0x000000000460E000-memory.dmp

memory/1348-20-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-21-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-22-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-23-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-24-0x0000000004060000-0x0000000004068000-memory.dmp

memory/1348-25-0x0000000004600000-0x000000000460E000-memory.dmp

memory/1348-26-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-27-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-28-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-31-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-32-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-35-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-38-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-42-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-45-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-48-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-51-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-54-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-57-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-60-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-63-0x0000000000400000-0x0000000000541000-memory.dmp

memory/1348-66-0x0000000000400000-0x0000000000541000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 21:18

Reported

2024-06-19 21:21

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\008a6a0161dcb313f73fd094808c7e87_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=3964 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 3.17.178.52.in-addr.arpa udp

Files

memory/3672-0-0x00000000006F0000-0x00000000006F1000-memory.dmp

memory/3672-1-0x0000000002290000-0x000000000234B000-memory.dmp

memory/3672-2-0x00000000006F0000-0x00000000006F1000-memory.dmp