Malware Analysis Report

2024-10-19 08:26

Sample ID 240125-wbb16achcr
Target 75200e77fbdd79b413d51974e55051f1
SHA256 039cf530dca66ff431f96f937d88084af001b44ed504ca0458c699a42d89422b
Tags
upx persistence kinsing loader
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

039cf530dca66ff431f96f937d88084af001b44ed504ca0458c699a42d89422b

Threat Level: Known bad

The file 75200e77fbdd79b413d51974e55051f1 was found to be: Known bad.

Malicious Activity Summary

upx persistence kinsing loader

Kinsing

Modifies AppInit DLL entries

UPX packed file

Loads dropped DLL

Deletes itself

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-25 17:44

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-25 17:44

Reported

2024-01-25 17:47

Platform

win7-20231215-en

Max time kernel

153s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe"

Signatures

Modifies AppInit DLL entries

persistence

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mpacklk.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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mpackl.dll C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A
File created C:\Windows\SysWOW64\mpacklk.exe C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A
File opened for modification C:\Windows\SysWOW64\mpacklk.exe C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe

"C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe"

C:\Windows\SysWOW64\mpacklk.exe

C:\Windows\system32\mpacklk.exe ˜‰

C:\Windows\SysWOW64\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe.bat

Network

N/A

Files

memory/2100-0-0x0000000000400000-0x000000000040F000-memory.dmp

\Windows\SysWOW64\mpacklk.exe

MD5 75200e77fbdd79b413d51974e55051f1
SHA1 7286e784b8e3326a1a632466af3a7155772509c6
SHA256 039cf530dca66ff431f96f937d88084af001b44ed504ca0458c699a42d89422b
SHA512 04efdf17b8a454d27d6ad3147aacf04e8bc27b1f45bc7c789fb4650a13c2ac29b3cd8faded3122752a6e17106735c542523fbbb4ce902237567cbc1cd64aef42

memory/2100-4-0x0000000000030000-0x000000000003F000-memory.dmp

memory/2188-11-0x0000000000400000-0x000000000040F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe.bat

MD5 72553dd9a78803fb32a2bee2af797b0d
SHA1 598f05111b464b856e4c5e23a6fdacfe456f8d5e
SHA256 f687d0fdff9030790db398e737b1b94082c69243d039a19c8b6923a892a1ce38
SHA512 d8c3173aaa051a7393c2b200487dc46d26009056bffd9b5adc3937ddd834738b1f8e24c8ac88bddd37991b2b973e0f6eac2adf45483f4020f8b102d014cec43b

memory/2100-19-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2188-21-0x0000000000400000-0x000000000040F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 17:44

Reported

2024-01-25 17:47

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

92s

Command Line

"C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe"

Signatures

Kinsing

loader kinsing

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mpacklk.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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mpackl.dll C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A
File created C:\Windows\SysWOW64\mpacklk.exe C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A
File opened for modification C:\Windows\SysWOW64\mpacklk.exe C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe

"C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe"

C:\Windows\SysWOW64\mpacklk.exe

C:\Windows\system32\mpacklk.exe ˜‰

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe.bat

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp

Files

memory/4892-0-0x0000000000400000-0x000000000040F000-memory.dmp

C:\Windows\SysWOW64\mpacklk.exe

MD5 75200e77fbdd79b413d51974e55051f1
SHA1 7286e784b8e3326a1a632466af3a7155772509c6
SHA256 039cf530dca66ff431f96f937d88084af001b44ed504ca0458c699a42d89422b
SHA512 04efdf17b8a454d27d6ad3147aacf04e8bc27b1f45bc7c789fb4650a13c2ac29b3cd8faded3122752a6e17106735c542523fbbb4ce902237567cbc1cd64aef42

memory/4892-8-0x0000000000400000-0x000000000040F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\75200e77fbdd79b413d51974e55051f1.exe.bat

MD5 72553dd9a78803fb32a2bee2af797b0d
SHA1 598f05111b464b856e4c5e23a6fdacfe456f8d5e
SHA256 f687d0fdff9030790db398e737b1b94082c69243d039a19c8b6923a892a1ce38
SHA512 d8c3173aaa051a7393c2b200487dc46d26009056bffd9b5adc3937ddd834738b1f8e24c8ac88bddd37991b2b973e0f6eac2adf45483f4020f8b102d014cec43b

memory/4856-10-0x0000000000400000-0x000000000040F000-memory.dmp