Malware Analysis Report

2025-05-28 18:48

Sample ID 241117-k5tbrawfrg
Target 89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83
SHA256 89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83
Tags
collection discovery
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

89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83

Threat Level: Shows suspicious behavior

The file 89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83 was found to be: Shows suspicious behavior.

Malicious Activity Summary

collection discovery

Drops startup file

Loads dropped DLL

Executes dropped EXE

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

AutoIT Executable

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

outlook_office_path

outlook_win_path

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-17 09:11

Signatures

AutoIT Executable

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

2024-11-17 09:11

Reported

2024-11-17 09:13

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\surmit.vbs C:\Users\Admin\AppData\Local\Gammexane\surmit.exe N/A

Executes dropped EXE

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

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2436 set thread context of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Gammexane\surmit.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: MapViewOfSection

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1992 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe C:\Users\Admin\AppData\Local\Gammexane\surmit.exe
PID 1992 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe C:\Users\Admin\AppData\Local\Gammexane\surmit.exe
PID 1992 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe C:\Users\Admin\AppData\Local\Gammexane\surmit.exe
PID 1992 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe C:\Users\Admin\AppData\Local\Gammexane\surmit.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2436 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Gammexane\surmit.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

C:\Users\Admin\AppData\Local\Gammexane\surmit.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
BR 132.226.247.73:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.67.152:443 reallyfreegeoip.org tcp

Files

memory/1992-6-0x0000000000640000-0x0000000000A40000-memory.dmp

\Users\Admin\AppData\Local\Gammexane\surmit.exe

MD5 3033de305199a2dfa2ae15a067686fce
SHA1 0359e5dcbd476e7375eb4bf2c7d1e15c98dea27e
SHA256 89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83
SHA512 ba30241dc4cf660f059cd8e536db0a433ca875ce1d29e02c00cf0d8a569777b05ede0692fddb3d6f0adf26b4b6ea348d8f8eae96037140f25ea6ed3d3c7c7856

C:\Users\Admin\AppData\Local\Temp\tilths

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/2436-20-0x00000000009F0000-0x0000000000DF0000-memory.dmp

memory/2624-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2624-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2624-25-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2624-26-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

memory/2624-27-0x00000000005D0000-0x0000000000600000-memory.dmp

memory/2624-28-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-29-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-30-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-31-0x0000000000950000-0x000000000097E000-memory.dmp

memory/2624-33-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-35-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-32-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-39-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-57-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-91-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-37-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-49-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-75-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-89-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-88-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-85-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-83-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-81-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-79-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-78-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-73-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-71-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-69-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-67-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-65-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-63-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-61-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-59-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-55-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-53-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-51-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-47-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-45-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-43-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-41-0x0000000000950000-0x0000000000978000-memory.dmp

memory/2624-480-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-481-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2624-482-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

memory/2624-483-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-484-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-485-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2624-486-0x0000000074CA0000-0x000000007538E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-17 09:11

Reported

2024-11-17 09:13

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\surmit.vbs C:\Users\Admin\AppData\Local\Gammexane\surmit.exe N/A

Executes dropped EXE

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

AutoIT Executable

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Gammexane\surmit.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Gammexane\surmit.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

C:\Users\Admin\AppData\Local\Gammexane\surmit.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Users\Admin\AppData\Local\Temp\89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1276 -ip 1276

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1276 -s 712

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/3096-6-0x0000000001680000-0x0000000001A80000-memory.dmp

C:\Users\Admin\AppData\Local\Gammexane\surmit.exe

MD5 3033de305199a2dfa2ae15a067686fce
SHA1 0359e5dcbd476e7375eb4bf2c7d1e15c98dea27e
SHA256 89cfe67f5db79acfcddfeebe0f984252780a6108b4a425bf878574a3efce6f83
SHA512 ba30241dc4cf660f059cd8e536db0a433ca875ce1d29e02c00cf0d8a569777b05ede0692fddb3d6f0adf26b4b6ea348d8f8eae96037140f25ea6ed3d3c7c7856

C:\Users\Admin\AppData\Local\Temp\tilths

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/1276-18-0x0000000001150000-0x0000000001550000-memory.dmp