Malware Analysis Report

2024-10-23 19:32

Sample ID 240621-blb4pathrc
Target 00a3f4fca136f952348fd925d1880069.bin
SHA256 4864533bba0db0560b6655a97d2804dbf081a02ca038240a3c9262e86842864e
Tags
modiloader evasion persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

4864533bba0db0560b6655a97d2804dbf081a02ca038240a3c9262e86842864e

Threat Level: Known bad

The file 00a3f4fca136f952348fd925d1880069.bin was found to be: Known bad.

Malicious Activity Summary

modiloader evasion persistence trojan

ModiLoader, DBatLoader

UAC bypass

ModiLoader Second Stage

Executes dropped EXE

Identifies Wine through registry keys

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

System policy modification

Uses Volume Shadow Copy service COM API

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 01:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 01:13

Reported

2024-06-21 01:16

Platform

win7-20240221-en

Max time kernel

143s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.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
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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Wine C:\Windows\mstwain32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\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\00a3f4fca136f952348fd925d1880069.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\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\00a3f4fca136f952348fd925d1880069.exe N/A
File opened for modification C:\Windows\mstwain32.exe C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.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\00a3f4fca136f952348fd925d1880069.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

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\00a3f4fca136f952348fd925d1880069.exe

"C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.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 hackmb15.no-ip.org udp

Files

memory/1984-0-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1984-1-0x0000000000401000-0x000000000041C000-memory.dmp

C:\Windows\mstwain32.exe

MD5 00a3f4fca136f952348fd925d1880069
SHA1 13971320aa89d7e0ae9f5c5c21f353df4714602b
SHA256 4864533bba0db0560b6655a97d2804dbf081a02ca038240a3c9262e86842864e
SHA512 178490f992fb50d00cdb7f70369d865e1286655146b4e5f9e70ea3680a0818da3c95dfa9d9af553878a8b6c57c577b512bdf558dcbe84674bff80e101be83dae

memory/1984-10-0x0000000004E10000-0x0000000004F39000-memory.dmp

memory/1984-9-0x0000000004CD0000-0x0000000004CE0000-memory.dmp

memory/1984-14-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-15-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1984-12-0x0000000004E10000-0x0000000004F39000-memory.dmp

memory/1040-16-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-20-0x0000000004390000-0x000000000439E000-memory.dmp

memory/1040-22-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-23-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-24-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-27-0x0000000004390000-0x000000000439E000-memory.dmp

memory/1040-25-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-26-0x0000000000640000-0x0000000000648000-memory.dmp

memory/1040-28-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-29-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-30-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-33-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-34-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-37-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-40-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-44-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-47-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-50-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-53-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-56-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-59-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-62-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-65-0x0000000000400000-0x0000000000529000-memory.dmp

memory/1040-68-0x0000000000400000-0x0000000000529000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-21 01:13

Reported

2024-06-21 01:16

Platform

win10v2004-20240611-en

Max time kernel

140s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.exe"

Signatures

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.exe

"C:\Users\Admin\AppData\Local\Temp\00a3f4fca136f952348fd925d1880069.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/116-0-0x0000000000400000-0x0000000000529000-memory.dmp

memory/116-1-0x0000000000400000-0x0000000000529000-memory.dmp