Malware Analysis Report

2024-09-11 13:52

Sample ID 240615-nha4faydlh
Target LabyMod4Crt.exe
SHA256 8ad9a17fffa07b434efcb5f370e7f25211361bd1628fb85781e3435eeeaa1e65
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

8ad9a17fffa07b434efcb5f370e7f25211361bd1628fb85781e3435eeeaa1e65

Threat Level: Known bad

The file LabyMod4Crt.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Xworm

Xworm family

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Deletes itself

Drops startup file

Checks computer location settings

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

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

2024-06-15 11:23

Signatures

Detect Xworm Payload

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

Xworm family

xworm

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 11:23

Reported

2024-06-15 11:25

Platform

win7-20231129-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
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

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\system32\cmd.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A
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
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
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2936 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2936 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\system32\cmd.exe
PID 2936 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\system32\cmd.exe
PID 2936 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\system32\cmd.exe
PID 1752 wrote to memory of 1196 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 1752 wrote to memory of 1196 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 1752 wrote to memory of 1196 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe

"C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'LabyMod4Crt.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'

C:\Windows\system32\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp894C.tmp.bat""

C:\Windows\system32\timeout.exe

timeout 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 cameras-happen.gl.at.ply.gg udp
US 147.185.221.20:23386 cameras-happen.gl.at.ply.gg tcp

Files

memory/2936-0-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp

memory/2936-1-0x0000000000280000-0x0000000000298000-memory.dmp

memory/2936-2-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

memory/2660-7-0x0000000002B80000-0x0000000002C00000-memory.dmp

memory/2660-8-0x000000001B540000-0x000000001B822000-memory.dmp

memory/2660-9-0x0000000002230000-0x0000000002238000-memory.dmp

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

MD5 02ed0e9f56ccac1ccc5965cd11cf655d
SHA1 58641c0378e655aa6db19f8c8ba04ceba5b85b83
SHA256 3cf9da6ff14fbe674cf5acdb7018ff0c1f7f4e4a1ec422a808c71a18b60633b0
SHA512 3f3e7dbae171845f0ab52e3e07c387ee8cc829667c6f4dde0ac882d08c2353d904288f009fc1a9cab7b2eb6234652717f5e77a24872801811fbb55502d1d8072

memory/2704-15-0x000000001B730000-0x000000001BA12000-memory.dmp

memory/2704-16-0x0000000001F40000-0x0000000001F48000-memory.dmp

memory/2936-31-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp894C.tmp.bat

MD5 62b0793017f15d2e72e2b4f679a534bd
SHA1 275486f8f598feb232d2c4cd0ce49f21e295139c
SHA256 246b6aa13c385063f3e3f5be34570e87ddeab32b4f291fe17b2be1dc06c65713
SHA512 90af8269056aeb815d82d3597077d164f4469ac341863840e2745cfdc692b472354425007c1bf5577d122c66b3cf88f27bc66adf4a12fb75b7b2bbe2a5273bda

memory/2936-43-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 11:23

Reported

2024-06-15 11:26

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

56s

Command Line

"C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A 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
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:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A
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
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
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4980 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 452 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4980 wrote to memory of 452 N/A C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe

"C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\LabyMod4Crt.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'LabyMod4Crt.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 cameras-happen.gl.at.ply.gg udp

Files

memory/4980-0-0x00007FFEFB383000-0x00007FFEFB385000-memory.dmp

memory/4980-1-0x0000000000A80000-0x0000000000A98000-memory.dmp

memory/4980-2-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp

memory/4980-3-0x00007FFEFB383000-0x00007FFEFB385000-memory.dmp

memory/3272-9-0x000001F479DC0000-0x000001F479DE2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ocbpcg1u.3mw.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3272-14-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp

memory/3272-15-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp

memory/3272-16-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp

memory/3272-19-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 6c47b3f4e68eebd47e9332eebfd2dd4e
SHA1 67f0b143336d7db7b281ed3de5e877fa87261834
SHA256 8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c
SHA512 0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 b1a1d8b05525b7b0c5babfd80488c1f2
SHA1 c85bbd6b7d0143676916c20fd52720499c2bb5c6
SHA256 adad192fc86c2f939fd3f70cb9ad323139a4e100f7c90b4454e2c53bdbc9b705
SHA512 346c6513c1373bab58439e37d3f75de1c5c587d7eb27076cf696e885a027b3b38d70b585839d1a2e7f2270cdcf0dac8c1fdff799f3b1158242ae9e3364c2a06e

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 7051a15350c9fed6e7a1191fa0d31d60
SHA1 cc5a68846a6583c3453a1291252799701897f89f
SHA256 b4fe06b1d1492a1b271dce12a5912d2dcee57e7766e4ed9f4d88fb2810e63aea
SHA512 d307ac2ed5b55eef1bf0521a1148cb3bafb31ac3fbb2d8646137b052e724d55179fc86a3772666e0dc54dd6bf3e612cda1020f579b0969df696eb37a2ad1605d

memory/4980-58-0x00007FFEFB380000-0x00007FFEFBE41000-memory.dmp