Malware Analysis Report

2025-03-14 23:52

Sample ID 240603-f6c9psdb5w
Target f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a
SHA256 f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a
Tags
upx persistence
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

f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a

Threat Level: Known bad

The file f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a was found to be: Known bad.

Malicious Activity Summary

upx persistence

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Modifies Installed Components in the registry

Modifies system executable filetype association

Executes dropped EXE

UPX packed file

Adds Run key to start application

Drops file in System32 directory

Drops file in Windows directory

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 05:28

Signatures

UPX dump on OEP (original entry point)

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

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 05:28

Reported

2024-06-03 05:31

Platform

win7-20240508-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe"

Signatures

UPX dump on OEP (original entry point)

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

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983} C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msqpo32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983} C:\Windows\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msqpo32.exe" C:\Windows\svchost.exe N/A

Executes dropped EXE

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

Modifies system executable filetype association

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Windows\svchost.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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Windows\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Windows\svchost.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\svchost.exe C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
File opened for modification C:\Windows\svchost.exe C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Windows\svchost.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 7d38d608b3f1969a7370ed20744c224c C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226 C:\Windows\svchost.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4 C:\Windows\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165" C:\Windows\svchost.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983} C:\Windows\svchost.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32 C:\Windows\svchost.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f C:\Windows\svchost.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983} C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4A092499-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9 C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe

"C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe"

C:\Windows\svchost.exe

C:\Windows\svchost.exe

Network

N/A

Files

memory/2132-0-0x0000000000400000-0x0000000000439000-memory.dmp

C:\Windows\SysWOW64\concp32.exe

MD5 f98e6f7a255e4d957e5021f9946dba0b
SHA1 22a32e791c8fd8f36bf1209e1fbc0edd157b0ae0
SHA256 12b763ce71d562a562c4c8064d1a111a506171cb7bb5c89af884f1d735525068
SHA512 766d84d6eda0e85e92356f1202da219e7cd7d940bdcadd38945bcc09ceff1295d709942bd3a11f07de2bc355384e7f9a9e95345ff520cd79099084f08e8d5b55

memory/2132-14-0x0000000000400000-0x0000000000439000-memory.dmp

C:\Windows\svchost.exe

MD5 35dc37e00ff44f88695f4826b0236fb1
SHA1 87f6d54dce0e33438ad040d0512dc6248e7340a2
SHA256 2bce1cba949ece138a4a7533039becfdcfc792e758e826ff9c18da2f5ea71c05
SHA512 8f1c2415c8daa106fbc364b1a03fad048d733bb9c8683bf15568b664d9262dc21d211bfae2543e3aef2ef03273689ecdc9d23616319e76ff002da3c9e7b2022c

memory/1968-15-0x0000000000400000-0x0000000000439000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 05:28

Reported

2024-06-03 05:31

Platform

win10v2004-20240226-en

Max time kernel

142s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe"

Signatures

UPX dump on OEP (original entry point)

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

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983} C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msvuv32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Modifies system executable filetype association

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3 C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 39aa9587783e037d9dd5c0f7103823fa C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5296FEE-8B9A-11D5-EBA1-F78EEEEEE983} C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe

"C:\Users\Admin\AppData\Local\Temp\f2c8b9f88382106d2547a3c760d641daba268e8bfcbf152357d5e593b841a56a.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 1432 -ip 1432

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1432 -s 744

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=3816 --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 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
GB 142.250.187.234:443 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 122.10.44.20.in-addr.arpa udp

Files

memory/1432-0-0x0000000000400000-0x0000000000439000-memory.dmp

C:\Windows\SysWOW64\concp32.exe

MD5 4832c76b4a120f89207b424e2335cc4e
SHA1 217208ca9ea331c37e2fe4a22c81c86791ccd3c8
SHA256 8da924f56a7ae2031ff4f585fac1a41ff7f4af6445b6c616b0f8524b232c4f6b
SHA512 ed26a9967fc20ed10e5e594c160b6f4c759ee39a7a929bd35b6f90a72ee5370a46f30cec824f3b1293deb99e8d509efd2cd051a4a0189583e1003621870217f9

memory/1432-7-0x0000000000400000-0x0000000000439000-memory.dmp