Malware Analysis Report

2024-12-07 02:02

Sample ID 241111-yp5lqsykck
Target 199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa
SHA256 199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa
Tags
bootkit discovery persistence
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

199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa

Threat Level: Likely malicious

The file 199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa was found to be: Likely malicious.

Malicious Activity Summary

bootkit discovery persistence

Drops file in Drivers directory

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Writes to the Master Boot Record (MBR)

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 19:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 19:58

Reported

2024-11-11 20:01

Platform

win7-20240708-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\Drivers\etc\hosts C:\Users\Admin\Documents\12.05.exe N/A
File created C:\Windows\system32\Drivers\etc\lmhosts.sam C:\Users\Admin\Documents\12.05.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\Documents\12.05.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\Documents\12.05.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\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\Documents\12.05.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\12.05.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\12.05.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe

"C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe"

C:\Users\Admin\Documents\12.05.exe

"C:\Users\Admin\Documents\12.05.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 748

Network

N/A

Files

memory/1064-0-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-1-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-3-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-2-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-4-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-6-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-7-0x0000000000401000-0x00000000005D7000-memory.dmp

memory/1064-8-0x0000000010000000-0x0000000010014000-memory.dmp

\Users\Admin\Documents\12.05.exe

MD5 7386c081f9e39263a5e1091874df1135
SHA1 f588b386db0b5448eaf3c04b196165c4756609c4
SHA256 00a2f3b60a2e153c7ce797a85e2c4932b8a0423902399568765faffddd2934ca
SHA512 2952c3e3be931a3bf8a52083637303eb046bf56a130bcbb17135a05d3e19b20f8c50c8535b3e3e5275050f72127eef328aec41932e95e8a5dd1fd04733ef8322

memory/1064-20-0x0000000004EB0000-0x000000000589E000-memory.dmp

memory/2684-21-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/1064-22-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/2684-23-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/2684-24-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/2684-25-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/2684-26-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/2684-28-0x0000000000400000-0x0000000000DEE000-memory.dmp

C:\Users\Admin\Documents\dbc12d0c

MD5 63b49e643b1fe2a912176d0ffebb3d4b
SHA1 c4d1d982df40dbc056997b36520df924abde9343
SHA256 36d4bde80726672b858d6f745026f40354b11b3f9397f045d2f970d67a229a8d
SHA512 a3f5bedade5752cd6296c016ab3aa20e4274d58dfa1e8f5ecbf182d11d0b336104702a9b62d71b45cf7e8fadc0b98e840095e6b8fcbda98911da27d9e50d755b

memory/2684-42-0x0000000000400000-0x0000000000DEE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 19:58

Reported

2024-11-11 20:01

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\Drivers\etc\lmhosts.sam C:\Users\Admin\Documents\12.05.exe N/A
File created C:\Windows\system32\Drivers\etc\hosts C:\Users\Admin\Documents\12.05.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\Documents\12.05.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\Documents\12.05.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\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\Documents\12.05.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A
N/A N/A C:\Users\Admin\Documents\12.05.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\12.05.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\12.05.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe

"C:\Users\Admin\AppData\Local\Temp\199eabb35b91888f23206ec029e5fa454421f397a5efabefa381547b62a88efa.exe"

C:\Users\Admin\Documents\12.05.exe

"C:\Users\Admin\Documents\12.05.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4748 -ip 4748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 1572

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
CN 120.55.199.101:80 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 68.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/4644-0-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-1-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-3-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-2-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-6-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-4-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-7-0x0000000000401000-0x00000000005D7000-memory.dmp

memory/4644-8-0x0000000010000000-0x0000000010014000-memory.dmp

C:\Users\Admin\Documents\12.05.exe

MD5 6369230c1843879d8636d242d9fafa88
SHA1 9ed3d04f6d2f200a2d36dc94a0460833410a055b
SHA256 2ae7031e84da9b2eab023e49e4d6bb6fb227c73dd4f3ce0376c1d05565637329
SHA512 d103a7e2cb059df13f16eda30c5216c50f90775bb8699db45c8aea004bacf4bd230439eaf8893a0d860d7fe3d13a7cb35ec4d107123f4a126a0d090adc4ea7ac

memory/4748-22-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4644-23-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4748-25-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4748-26-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4748-24-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4748-27-0x0000000000400000-0x0000000000DEE000-memory.dmp

memory/4748-29-0x0000000000400000-0x0000000000DEE000-memory.dmp

C:\Users\Admin\Documents\38afe80f

MD5 56bfb143997825005f80e885b6ff7f59
SHA1 d629ec67337b9d058a2ca8c7d47c829a2eac3ad8
SHA256 011c4e753a058c7c28833c1ce2f10ff54d9030f1bf9dd121383323e995f2f507
SHA512 471862d6b33307748a2eabc27fb846b1738ce0c0971793676c9d280cb9b2d8df77a5df1d24fd6cf034ab3815ae850ce1a1acd32fc0070eb98481ae28382febbc

memory/4748-40-0x0000000000400000-0x0000000000DEE000-memory.dmp