Malware Analysis Report

2025-03-14 23:11

Sample ID 240406-3xl7ksef5y
Target a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc
SHA256 a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc
Tags
persistence
score
7/10

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
7/10

SHA256

a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc

Threat Level: Shows suspicious behavior

The file a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 23:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 23:53

Reported

2024-04-06 23:56

Platform

win7-20240221-en

Max time kernel

150s

Max time network

125s

Command Line

C:\Windows\Explorer.EXE

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\calcdkey\RMAchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\~3EC5.tmp N/A
N/A N/A C:\Windows\SysWOW64\colosort.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\bthufmon = "C:\\Users\\Admin\\AppData\\Roaming\\calcdkey\\RMAchost.exe" C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\colosort.exe C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\calcdkey\RMAchost.exe N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\calcdkey\RMAchost.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe

"C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe"

C:\Users\Admin\AppData\Roaming\calcdkey\RMAchost.exe

"C:\Users\Admin\AppData\Roaming\calcdkey"

C:\Users\Admin\AppData\Local\Temp\~3EC5.tmp

1208 493576 1756 1

C:\Windows\SysWOW64\colosort.exe

C:\Windows\SysWOW64\colosort.exe -s

Network

N/A

Files

memory/2156-0-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2156-1-0x0000000000490000-0x0000000000511000-memory.dmp

\Users\Admin\AppData\Roaming\calcdkey\RMAchost.exe

MD5 fbffa461a483e0ebeae3d59678fe4ff2
SHA1 688606efadd444544273784db06e2b35424e6e0b
SHA256 df84d18d0797b441576b49c1523d1839337834d2ae92ccbcff2ac6359b4fd268
SHA512 c4b2f7f4a937fcc970aa7a526477b8bd1cc882750d45081d0437b877e5e17b57b0ccd1c0286805926117289cd3ac6843f6ef13276fac48995f6c8ef879339b69

memory/2156-5-0x0000000000520000-0x00000000005A2000-memory.dmp

memory/2156-14-0x0000000000520000-0x00000000005A2000-memory.dmp

memory/1756-19-0x0000000000220000-0x00000000002A1000-memory.dmp

memory/1208-18-0x0000000003A60000-0x0000000003AE8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~3EC5.tmp

MD5 86dc243576cf5c7445451af37631eea9
SHA1 99a81c47c4c02f32c0ab456bfa23c306c7a09bf9
SHA256 25d2a671e1b5b5b95697ac0234ce4d46e0d0894919521b54aabebd9daecf994a
SHA512 c7310524f9b65f811146c1eb6ae944966351ac88a95fbc1ac422d8810730e5e212a7e28090ad758ea23c96ba38073e7fcf42460575e7f09dbc759a45c5d5a4a4

memory/1756-20-0x00000000002D0000-0x00000000002D5000-memory.dmp

memory/1208-21-0x0000000003A60000-0x0000000003AE8000-memory.dmp

memory/1756-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1208-27-0x0000000002AC0000-0x0000000002AC6000-memory.dmp

memory/1208-25-0x0000000003A60000-0x0000000003AE8000-memory.dmp

memory/1208-29-0x0000000002AD0000-0x0000000002ADD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 23:53

Reported

2024-04-06 23:56

Platform

win10v2004-20240226-en

Max time kernel

151s

Max time network

156s

Command Line

C:\Windows\Explorer.EXE

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe N/A
N/A N/A C:\Windows\SysWOW64\psrinfo.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\~8FDC.tmp N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\certgini = "C:\\Users\\Admin\\AppData\\Roaming\\HOSTdiag\\Gameougc.exe" C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\psrinfo.exe C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe

"C:\Users\Admin\AppData\Local\Temp\a0fb06613c6118c74bc4f08a6e9a93e692141b8d04b0b24022d75862a0d30cbc.exe"

C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe

"C:\Users\Admin\AppData\Roaming\HOSTdiag"

C:\Windows\SysWOW64\psrinfo.exe

C:\Windows\SysWOW64\psrinfo.exe -s

C:\Users\Admin\AppData\Local\Temp\~8FDC.tmp

3464 493576 4624 1

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.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 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/4584-0-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4584-1-0x00000000005F0000-0x0000000000671000-memory.dmp

C:\Users\Admin\AppData\Roaming\HOSTdiag\Gameougc.exe

MD5 81f47fddc63ceaa886c1119326a32070
SHA1 a097039205b3069ea7f2ede10d0d114806aa591e
SHA256 05ef2d9bd1f5965adfe4e8be8a5e3a65a5d6cd4ff802dbf7da66a906babe0e85
SHA512 b6aaf3dd6d41c054c6359e5c34cb954950e76e137782581da6831e4af3053c7bdd07e04af5777b70e5286b27e276f9e9e4e6e42a91834913f4949dddca2c7a1b

memory/4624-7-0x0000000000400000-0x0000000000482000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~8FDC.tmp

MD5 86dc243576cf5c7445451af37631eea9
SHA1 99a81c47c4c02f32c0ab456bfa23c306c7a09bf9
SHA256 25d2a671e1b5b5b95697ac0234ce4d46e0d0894919521b54aabebd9daecf994a
SHA512 c7310524f9b65f811146c1eb6ae944966351ac88a95fbc1ac422d8810730e5e212a7e28090ad758ea23c96ba38073e7fcf42460575e7f09dbc759a45c5d5a4a4

memory/4168-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4584-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3464-18-0x0000000006FE0000-0x0000000007068000-memory.dmp

memory/3464-16-0x0000000006FE0000-0x0000000007068000-memory.dmp

memory/4624-13-0x0000000000560000-0x00000000005E1000-memory.dmp

memory/4624-9-0x0000000000760000-0x0000000000765000-memory.dmp

memory/3464-24-0x0000000002B80000-0x0000000002B8D000-memory.dmp

memory/3464-22-0x00000000028E0000-0x00000000028E6000-memory.dmp

memory/4624-27-0x0000000000400000-0x0000000000482000-memory.dmp