Malware Analysis Report

2024-10-23 19:32

Sample ID 240620-1w4n5atanj
Target 09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118
SHA256 a2c87d019943bf7d1d05f87749c574d10e41e5147f174ee6de6605db8728b8ca
Tags
modiloader evasion persistence trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a2c87d019943bf7d1d05f87749c574d10e41e5147f174ee6de6605db8728b8ca

Threat Level: Known bad

The file 09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan upx

ModiLoader, DBatLoader

UAC bypass

ModiLoader Second Stage

Deletes itself

UPX packed file

Executes dropped EXE

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

System policy modification

Uses Volume Shadow Copy service COM API

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 22:00

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 22:00

Reported

2024-06-20 22:03

Platform

win10v2004-20240508-en

Max time kernel

92s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
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 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/3740-1-0x00000000021B0000-0x000000000230D000-memory.dmp

memory/3740-0-0x00000000006B0000-0x00000000006B1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 22:00

Reported

2024-06-20 22:03

Platform

win7-20240220-en

Max time kernel

147s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_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\winlogon.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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Deletes itself

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

Executes dropped EXE

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

UPX packed file

upx
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\Windows\\winlogon.exe" C:\Windows\winlogon.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\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\winlogon.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\winlogon.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2292 set thread context of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2056 set thread context of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\winlogon.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe N/A
File opened for modification C:\Windows\winlogon.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe N/A
File created C:\Windows\ntdtcstp.dll C:\Windows\winlogon.exe N/A
File created C:\Windows\cmsetac.dll C:\Windows\winlogon.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\09a32979c530c80cb87f56d7eeda2c0b_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\winlogon.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\winlogon.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2292 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe
PID 2668 wrote to memory of 2056 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Windows\winlogon.exe
PID 2668 wrote to memory of 2056 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Windows\winlogon.exe
PID 2668 wrote to memory of 2056 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Windows\winlogon.exe
PID 2668 wrote to memory of 2056 N/A C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe
PID 2056 wrote to memory of 1508 N/A C:\Windows\winlogon.exe C:\Windows\winlogon.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\winlogon.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\winlogon.exe

"C:\Windows\winlogon.exe" \melt "C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe"

C:\Windows\winlogon.exe

C:\Windows\winlogon.exe \melt C:\Users\Admin\AppData\Local\Temp\09a32979c530c80cb87f56d7eeda2c0b_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 maxinitto.no-ip.org udp

Files

memory/2292-0-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2292-1-0x0000000001E90000-0x0000000001FED000-memory.dmp

memory/2292-2-0x0000000000320000-0x0000000000321000-memory.dmp

memory/2668-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2668-13-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2668-10-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2292-14-0x0000000020000000-0x00000000201E2000-memory.dmp

memory/2668-16-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2668-17-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2668-18-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2668-19-0x00000000002B0000-0x00000000002B1000-memory.dmp

C:\Windows\winlogon.exe

MD5 09a32979c530c80cb87f56d7eeda2c0b
SHA1 4b7b0320dd74ad2fe9fc5e2d91e476d6dca411bf
SHA256 a2c87d019943bf7d1d05f87749c574d10e41e5147f174ee6de6605db8728b8ca
SHA512 3e0716ecbc6b72ce270e5d63864a1c439f39c40b91a6db57d9bfbb05b9e365ada86313bd8095d79b23a2cefa2765b17fa765a28c7b41d02a9d0543682cafb539

memory/2668-28-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2056-29-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2056-39-0x0000000020001000-0x0000000020003000-memory.dmp

memory/1508-43-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1508-49-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2056-47-0x0000000020000000-0x00000000201E2000-memory.dmp

memory/2056-46-0x0000000020000000-0x00000000201E2000-memory.dmp

memory/1508-50-0x0000000020000000-0x00000000201E2000-memory.dmp

memory/1508-51-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1508-52-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1508-56-0x00000000023A0000-0x00000000023AE000-memory.dmp

memory/1508-58-0x0000000000340000-0x0000000000348000-memory.dmp

memory/1508-59-0x00000000023A0000-0x00000000023AE000-memory.dmp

memory/2056-62-0x0000000020000000-0x00000000201E2000-memory.dmp