Malware Analysis Report

2024-12-07 16:23

Sample ID 241113-2ar9ms1ama
Target 597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4
SHA256 597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4
Tags
defense_evasion discovery evasion
score
8/10

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
8/10

SHA256

597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4

Threat Level: Likely malicious

The file 597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4 was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery evasion

Sets file to hidden

Checks computer location settings

Deletes itself

Executes dropped EXE

Indicator Removal: File Deletion

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Views/modifies file attributes

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 22:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 22:23

Reported

2024-11-13 22:25

Platform

win7-20240903-en

Max time kernel

141s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe"

Signatures

Sets file to hidden

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

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\Debug\rwmhost.exe N/A

Indicator Removal: File Deletion

defense_evasion

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\rwmhost.exe C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A
File opened for modification C:\Windows\Debug\rwmhost.exe C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A
File opened for modification C:\Windows\Debug\rwmhost.exe C:\Windows\SysWOW64\attrib.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\rwmhost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A

Views/modifies file attributes

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

Processes

C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe

"C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe"

C:\Windows\SysWOW64\attrib.exe

attrib +a +s +h +r C:\Windows\Debug\rwmhost.exe

C:\Windows\Debug\rwmhost.exe

C:\Windows\Debug\rwmhost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\597065~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 4sq82v5Qi.nnnn.eu.org udp
US 8.8.8.8:53 hu9vTb0xm.nnnn.eu.org udp
US 8.8.8.8:53 Hbq6Rx58hU.nnnn.eu.org udp
US 8.8.8.8:53 rnXIDvYjRi.nnnn.eu.org udp
US 8.8.8.8:53 RTiTUPYrw.nnnn.eu.org udp

Files

C:\Windows\debug\rwmhost.exe

MD5 57a2689fa1e9f2be58f0b160c6965e32
SHA1 039c02b3ea6b5716255511c83665c418beb34b8e
SHA256 7d04c50711c22d68f30bf0bf502cbfe035155ebb59a29c200d022b624bb4011d
SHA512 1d78c30369d5ac1bd8ff8e1de31582b076ce8322febe2297bfd438371399a9ed28afbcc33baaeb56f0e5dfd5bbdbfd0dea5dfacc29baf0573ec986c9bed8bb86

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 22:23

Reported

2024-11-13 22:25

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe"

Signatures

Sets file to hidden

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A

Executes dropped EXE

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

Indicator Removal: File Deletion

defense_evasion

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Debug\uauhost.exe C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A
File opened for modification C:\Windows\Debug\uauhost.exe C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A
File opened for modification C:\Windows\Debug\uauhost.exe C:\Windows\SysWOW64\attrib.exe N/A

Enumerates physical storage devices

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\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Debug\uauhost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\attrib.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe N/A

Views/modifies file attributes

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

Processes

C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe

"C:\Users\Admin\AppData\Local\Temp\597065ef091c26f20b6091aa27ab6d6ac421fba995f202a21b41c0b1be4ba5d4.exe"

C:\Windows\SysWOW64\attrib.exe

attrib +a +s +h +r C:\Windows\Debug\uauhost.exe

C:\Windows\Debug\uauhost.exe

C:\Windows\Debug\uauhost.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\597065~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 7EykPV7skY.nnnn.eu.org udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 hu9vTb0xm.nnnn.eu.org udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 Hbq6Rx58hU.nnnn.eu.org udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 rnXIDvYjRi.nnnn.eu.org udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 RTiTUPYrw.nnnn.eu.org udp

Files

C:\Windows\debug\uauhost.exe

MD5 57a2689fa1e9f2be58f0b160c6965e32
SHA1 039c02b3ea6b5716255511c83665c418beb34b8e
SHA256 7d04c50711c22d68f30bf0bf502cbfe035155ebb59a29c200d022b624bb4011d
SHA512 1d78c30369d5ac1bd8ff8e1de31582b076ce8322febe2297bfd438371399a9ed28afbcc33baaeb56f0e5dfd5bbdbfd0dea5dfacc29baf0573ec986c9bed8bb86