Malware Analysis Report

2025-08-11 04:37

Sample ID 250119-pa1vkawpfw
Target fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604
SHA256 fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604
Tags
bootkit discovery persistence spyware stealer
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

fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604

Threat Level: Likely malicious

The file fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604 was found to be: Likely malicious.

Malicious Activity Summary

bootkit discovery persistence spyware stealer

Blocklisted process makes network request

Reads user/profile data of web browsers

Adds Run key to start application

Enumerates connected drives

Writes to the Master Boot Record (MBR)

System Location Discovery: System Language Discovery

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-19 12:08

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-19 12:08

Reported

2025-01-19 12:11

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

Signatures

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\esf = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll\",EnumSourceFiles" C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\h: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\n: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\p: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\e: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\j: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\q: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\u: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\z: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\a: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\b: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\g: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\r: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\w: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\s: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\t: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\v: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\i: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\k: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\l: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\m: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\o: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\x: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\y: C:\Windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Windows\SysWOW64\rundll32.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 460 wrote to memory of 3984 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 460 wrote to memory of 3984 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 460 wrote to memory of 3984 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 21.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
KR 107.163.56.237:18530 tcp
US 8.8.8.8:53 7.98.22.2.in-addr.arpa udp
KR 107.163.56.109:18530 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
KR 107.163.56.251:6658 tcp
KR 107.163.56.236:18963 tcp
KR 107.163.56.236:18963 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 167.190.18.2.in-addr.arpa udp
KR 107.163.56.236:18963 tcp
KR 107.163.56.251:6658 tcp
US 8.8.8.8:53 86.49.80.91.in-addr.arpa udp
KR 107.163.56.251:6658 tcp
US 8.8.8.8:53 85.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
KR 107.163.56.251:6658 tcp
KR 107.163.56.251:6658 tcp

Files

memory/3984-0-0x0000000010000000-0x0000000010073000-memory.dmp

memory/3984-1-0x0000000010048000-0x0000000010049000-memory.dmp

memory/3984-3-0x0000000010000000-0x0000000010073000-memory.dmp

memory/3984-4-0x0000000010000000-0x0000000010073000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-19 12:08

Reported

2025-01-19 12:10

Platform

win7-20240903-en

Max time kernel

143s

Max time network

147s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

Signatures

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\esf = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll\",EnumSourceFiles" C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\l: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\a: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\h: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\i: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\m: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\q: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\r: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\t: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\w: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\g: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\z: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\x: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\y: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\v: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\j: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\k: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\n: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\o: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\p: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\s: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\u: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\b: C:\Windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Windows\SysWOW64\rundll32.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1972 wrote to memory of 2548 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe68f93025656a4ae8771ef0331c4fbb16117ac536a5f17d0d353ea1d727a604.dll,#1

Network

Country Destination Domain Proto
KR 107.163.56.237:18530 107.163.56.237 tcp
KR 107.163.56.109:18530 107.163.56.109 tcp
KR 107.163.56.251:6658 tcp
KR 107.163.56.236:18963 107.163.56.236 tcp
KR 107.163.56.236:18963 tcp
KR 107.163.56.236:18963 tcp
KR 107.163.56.251:6658 tcp
KR 107.163.56.251:6658 tcp

Files

memory/2548-0-0x0000000010000000-0x0000000010073000-memory.dmp

memory/2548-1-0x0000000010000000-0x0000000010073000-memory.dmp

memory/2548-2-0x0000000010000000-0x0000000010073000-memory.dmp

memory/2548-3-0x0000000010048000-0x0000000010049000-memory.dmp

memory/2548-4-0x0000000010000000-0x0000000010073000-memory.dmp

memory/2548-6-0x0000000010000000-0x0000000010073000-memory.dmp