Malware Analysis Report

2025-08-05 21:10

Sample ID 231231-ph7yvahfa9
Target 35fc17285530e2e4cca50280b5f4b4b1
SHA256 e65e98c2c80f48b6a7c49b10e60ce0a02d1bc227dcccc407afd9b385cc99c252
Tags
persistence vmprotect
score
8/10

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
8/10

SHA256

e65e98c2c80f48b6a7c49b10e60ce0a02d1bc227dcccc407afd9b385cc99c252

Threat Level: Likely malicious

The file 35fc17285530e2e4cca50280b5f4b4b1 was found to be: Likely malicious.

Malicious Activity Summary

persistence vmprotect

Drops file in Drivers directory

Sets DLL path for service in the registry

Loads dropped DLL

VMProtect packed file

Deletes itself

Drops file in System32 directory

Suspicious behavior: LoadsDriver

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-31 12:20

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 12:20

Reported

2024-01-10 14:00

Platform

win10v2004-20231222-en

Max time kernel

149s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\drivers\beep.sys C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\netdde\Parameters\ServiceDll = "C:\\Windows\\system32\\TfmitxD.dll" C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

VMProtect packed file

vmprotect
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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\TfmitxD.dll C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe

"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\35FC17~1.EXE > nul

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k krnlsrvc

Network

Country Destination Domain Proto
US 8.8.8.8:53 66701422.3322.org udp
CN 183.236.2.18:9090 66701422.3322.org tcp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 21.177.190.20.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
IE 20.223.36.55:443 tcp
IE 20.223.36.55:443 tcp
IE 20.223.36.55:443 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.3.187.198:443 tcp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
CN 183.236.2.18:9090 tcp
N/A 20.3.187.198:443 tcp
US 8.8.8.8:53 udp
N/A 2.17.5.100:80 tcp
N/A 2.17.5.100:80 tcp
US 8.8.8.8:53 udp
N/A 40.68.123.157:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.54.110.119:443 tcp
N/A 20.3.187.198:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 96.17.178.175:80 tcp
CN 183.236.2.18:9090 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.134.32:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.175:80 tcp
N/A 93.184.221.240:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.175:80 tcp
N/A 88.221.134.32:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 162.159.36.2:53 udp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 20.103.156.88:443 tcp
US 8.8.8.8:53 udp
N/A 13.95.31.18:443 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 40.68.123.157:443 tcp
US 8.8.8.8:53 udp
N/A 13.85.23.86:443 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 52.111.227.13:443 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.195:80 tcp
CN 183.236.2.18:9090 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
N/A 96.17.178.195:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
IE 20.223.36.55:443 tcp
N/A 88.221.135.217:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
CN 183.236.2.18:9090 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
GB 96.17.178.173:80 tcp
N/A 162.159.36.2:53 udp
N/A 20.242.39.171:443 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.232:80 tcp
N/A 88.221.135.232:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.232:80 tcp
N/A 88.221.135.232:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.209:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.209:80 tcp
N/A 88.221.135.232:80 tcp
N/A 96.17.178.209:80 tcp
N/A 96.17.178.209:80 tcp
N/A 88.221.135.232:80 tcp
N/A 96.17.178.209:80 tcp
N/A 96.17.178.209:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.209:80 tcp
N/A 88.221.135.232:80 tcp
N/A 88.221.135.232:80 tcp
N/A 96.17.178.209:80 tcp
US 8.8.8.8:53 udp
N/A 20.189.173.15:443 tcp
N/A 96.17.178.209:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.209:80 tcp
N/A 20.242.39.171:443 tcp

Files

C:\Windows\SysWOW64\TfmitxD.dll

MD5 db603e204991123fbd757e4756555931
SHA1 69c6299a1590d51bf28fa8f64d0119d8af246e19
SHA256 33578f21466c058bb343b302e3d8f4d6683b2b961f71d89342117b4038c176b3
SHA512 468813dbbf44334f934775ab3605424e30fad594939893107dd6d3eab77793ceb5b4d62c05ab7802e31374ded402cae7c6fd250e5f5ffc281ce698d619051691

\??\c:\windows\SysWOW64\tfmitxd.dll

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/2716-10-0x0000000010000000-0x0000000010019000-memory.dmp

memory/1760-6-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2716-11-0x0000000010000000-0x0000000010019000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 12:20

Reported

2024-01-10 14:00

Platform

win7-20231129-en

Max time kernel

127s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\drivers\beep.sys C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\netdde\Parameters\ServiceDll = "C:\\Windows\\system32\\TambtsD.dll" C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Deletes itself

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

VMProtect packed file

vmprotect
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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\TambtsD.dll C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe

"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k krnlsrvc

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\35FC17~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 66701422.3322.org udp
CN 183.236.2.18:9090 66701422.3322.org tcp
CN 183.236.2.18:9090 66701422.3322.org tcp
US 8.8.8.8:53 66701422.3322.org udp
CN 183.236.2.18:9090 66701422.3322.org tcp
CN 183.236.2.18:9090 66701422.3322.org tcp
US 8.8.8.8:53 66701422.3322.org udp
CN 183.236.2.18:9090 66701422.3322.org tcp

Files

memory/2980-9-0x0000000010000000-0x0000000010019000-memory.dmp

\Windows\SysWOW64\TambtsD.dll

MD5 db603e204991123fbd757e4756555931
SHA1 69c6299a1590d51bf28fa8f64d0119d8af246e19
SHA256 33578f21466c058bb343b302e3d8f4d6683b2b961f71d89342117b4038c176b3
SHA512 468813dbbf44334f934775ab3605424e30fad594939893107dd6d3eab77793ceb5b4d62c05ab7802e31374ded402cae7c6fd250e5f5ffc281ce698d619051691

memory/2860-6-0x0000000010000000-0x0000000010019000-memory.dmp