Malware Analysis Report

2024-11-30 22:16

Sample ID 241121-ykrjbawkbx
Target 6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb
SHA256 6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb
Tags
xloader rzwo discovery loader rat
score
10/10

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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb

Threat Level: Known bad

The file 6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb was found to be: Known bad.

Malicious Activity Summary

xloader rzwo discovery loader rat

Xloader

Xloader family

Xloader payload

Loads dropped DLL

Executes dropped EXE

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

NSIS installer

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 19:50

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win7-20240903-en

Max time kernel

148s

Max time network

124s

Command Line

C:\Windows\Explorer.EXE

Signatures

Xloader

loader xloader

Xloader family

xloader

Xloader payload

rat
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

Executes dropped EXE

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2736 set thread context of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2676 set thread context of 1280 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Windows\Explorer.EXE
PID 2676 set thread context of 1280 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Windows\Explorer.EXE
PID 1680 set thread context of 1280 N/A C:\Windows\SysWOW64\netsh.exe C:\Windows\Explorer.EXE

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\drfgruezwu.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.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\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3004 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 3004 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 3004 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 3004 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 2736 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe
PID 1280 wrote to memory of 1680 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\netsh.exe
PID 1280 wrote to memory of 1680 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\netsh.exe
PID 1280 wrote to memory of 1680 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\netsh.exe
PID 1280 wrote to memory of 1680 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\netsh.exe
PID 1680 wrote to memory of 716 N/A C:\Windows\SysWOW64\netsh.exe C:\Windows\SysWOW64\cmd.exe
PID 1680 wrote to memory of 716 N/A C:\Windows\SysWOW64\netsh.exe C:\Windows\SysWOW64\cmd.exe
PID 1680 wrote to memory of 716 N/A C:\Windows\SysWOW64\netsh.exe C:\Windows\SysWOW64\cmd.exe
PID 1680 wrote to memory of 716 N/A C:\Windows\SysWOW64\netsh.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe

"C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe"

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\flhuvaanr

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\flhuvaanr

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autoconv.exe

"C:\Windows\SysWOW64\autoconv.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\netsh.exe

"C:\Windows\SysWOW64\netsh.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

MD5 ce84e0de135e04f77cadb28f8c216367
SHA1 fa583c32020b084e748bf263d120fcfe4ccc324f
SHA256 4a5824da0a6b328ddcf55a46e71ae5648c3c2fb3ce8e39add28de82c3e97ef5b
SHA512 47e14f190c782dc703468d4751b39865f3274de2b9cd35652d906e07c3f7da1014173284b14be8041d1ab9eeca0dd878ce290d9342b057b85d2cf4dd1cc72071

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

MD5 f04e7716091d2389032541ba8eeb87de
SHA1 8bec3857fda9bbb8f98182f728bbd054967679cf
SHA256 649cee55f8b6d06eacb6c7f3fd98a153873c66230bc1b17c8789fd8fa3ca0d40
SHA512 80bc5d21a755af9571462fc7e04e4f51d0515dd658bf001d3eae2922fca54423fb5f27d5da73bcedd4b7a6624ffadc18810270ed641e0f47160b02bde18c2417

memory/2736-8-0x0000000000240000-0x0000000000242000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\x6x2dqsyxlhw6i7v7rx

MD5 f7b34417e6147b112144d1d9b50a0c2c
SHA1 1f089694334f36d7c29e89350294862e0d8043a7
SHA256 f956110ead3550c2d01cd7796c82d1e31de04513e29db33937ef0dea4358c2d0
SHA512 f53c9b1ad6abd969fcc2d55c67f961fb973f65b479c1c3d0ace139fc205f3d29bac1beb3f92fa9e6b3cbcba788eaef3a42f2989d8dbb3c7ffaa0cc6610a43731

memory/2676-14-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2676-16-0x0000000000400000-0x0000000000429000-memory.dmp

memory/1280-17-0x0000000006790000-0x00000000068AF000-memory.dmp

memory/2676-19-0x0000000000400000-0x0000000000429000-memory.dmp

memory/1280-20-0x00000000045C0000-0x00000000046AF000-memory.dmp

memory/1280-21-0x0000000006790000-0x00000000068AF000-memory.dmp

memory/1680-24-0x0000000000D50000-0x0000000000D6B000-memory.dmp

memory/1680-25-0x00000000001D0000-0x00000000001F9000-memory.dmp

memory/1280-27-0x00000000045C0000-0x00000000046AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\drfgruezwu.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\AppData\Local\Temp\drfgruezwu.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\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe

"C:\Users\Admin\AppData\Local\Temp\6a320de21bbba1a93f56eee513ec18a594ac1caa754c9ce946863022bbf62ceb.exe"

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\flhuvaanr

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe C:\Users\Admin\AppData\Local\Temp\flhuvaanr

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4484 -ip 4484

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 516

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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa 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 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 85.65.42.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

MD5 ce84e0de135e04f77cadb28f8c216367
SHA1 fa583c32020b084e748bf263d120fcfe4ccc324f
SHA256 4a5824da0a6b328ddcf55a46e71ae5648c3c2fb3ce8e39add28de82c3e97ef5b
SHA512 47e14f190c782dc703468d4751b39865f3274de2b9cd35652d906e07c3f7da1014173284b14be8041d1ab9eeca0dd878ce290d9342b057b85d2cf4dd1cc72071

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

MD5 f04e7716091d2389032541ba8eeb87de
SHA1 8bec3857fda9bbb8f98182f728bbd054967679cf
SHA256 649cee55f8b6d06eacb6c7f3fd98a153873c66230bc1b17c8789fd8fa3ca0d40
SHA512 80bc5d21a755af9571462fc7e04e4f51d0515dd658bf001d3eae2922fca54423fb5f27d5da73bcedd4b7a6624ffadc18810270ed641e0f47160b02bde18c2417

memory/4484-8-0x00000000004D0000-0x00000000004D2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\x6x2dqsyxlhw6i7v7rx

MD5 f7b34417e6147b112144d1d9b50a0c2c
SHA1 1f089694334f36d7c29e89350294862e0d8043a7
SHA256 f956110ead3550c2d01cd7796c82d1e31de04513e29db33937ef0dea4358c2d0
SHA512 f53c9b1ad6abd969fcc2d55c67f961fb973f65b479c1c3d0ace139fc205f3d29bac1beb3f92fa9e6b3cbcba788eaef3a42f2989d8dbb3c7ffaa0cc6610a43731

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win7-20241010-en

Max time kernel

13s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe"

Signatures

Program crash

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

Processes

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

"C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 160

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-21 19:50

Reported

2024-11-21 19:53

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe"

Signatures

Program crash

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

Processes

C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe

"C:\Users\Admin\AppData\Local\Temp\drfgruezwu.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4764 -ip 4764

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 460

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

N/A