Malware Analysis Report

2024-09-11 13:53

Sample ID 240615-gl2l8sthjj
Target Zpeyoxgyc.exe
SHA256 b37907a3276eeefa6ec2b4a9a40b51b212bec519250c9fbe45f30cb7070280de
Tags
xworm execution persistence 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 Overview

score
10/10

SHA256

b37907a3276eeefa6ec2b4a9a40b51b212bec519250c9fbe45f30cb7070280de

Threat Level: Known bad

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

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm

Command and Scripting Interpreter: PowerShell

Looks up external IP address via web service

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

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
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
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 05:54

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 05:54

Reported

2024-06-15 05:55

Platform

win11-20240611-en

Max time kernel

59s

Max time network

32s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.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\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-423582142-4191893794-1888535462-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ilvrcqkyi = "C:\\Users\\Admin\\AppData\\Roaming\\Ilvrcqkyi.exe" C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A

Looks up external IP address via web service

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3308 set thread context of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 3308 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe
PID 2800 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2800 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2800 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2800 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2800 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2800 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\Zpeyoxgyc.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

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

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

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

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

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

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

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

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

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
DE 93.127.192.2:443 nullbulge.se tcp

Files

memory/3308-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

memory/3308-1-0x0000000000700000-0x0000000000B70000-memory.dmp

memory/3308-2-0x0000000006800000-0x0000000006A22000-memory.dmp

memory/3308-3-0x0000000006FD0000-0x0000000007576000-memory.dmp

memory/3308-4-0x0000000006AC0000-0x0000000006B52000-memory.dmp

memory/3308-14-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-16-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-48-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-54-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-52-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-50-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-44-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-42-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-36-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-34-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-32-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-30-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-28-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-26-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-24-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-46-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-40-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-38-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-22-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-18-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-12-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-10-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-8-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-6-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-20-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-5-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-68-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-66-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-64-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-62-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-60-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-58-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-56-0x0000000006800000-0x0000000006A1B000-memory.dmp

memory/3308-4891-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/3308-4892-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/3308-4893-0x0000000006C50000-0x0000000006CAC000-memory.dmp

memory/3308-4894-0x0000000006CB0000-0x0000000006CFC000-memory.dmp

memory/3308-4895-0x0000000006DE0000-0x0000000006E46000-memory.dmp

memory/3308-4896-0x00000000075C0000-0x0000000007614000-memory.dmp

memory/3308-4901-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2800-4902-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2800-4903-0x0000000000400000-0x0000000000412000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Zpeyoxgyc.exe.log

MD5 ae5902f6f08a0ccf65d2b2cf5de35baf
SHA1 fed0917857eab4faba95d0e6bc035527a73775fe
SHA256 4ca1e95c28fcf10cfb00e6dd1a952d85e4968614b2f455ee915eca088f09f09b
SHA512 9aef0ff0f00fefad8897ee8de23999aad33bfb243afb5884286aaf7e32a86386585e4fc35b426397f940b0df4426b49d463ab7dbc64f1e06c9ce319cb6385ee7

memory/2800-4904-0x0000000005D50000-0x0000000005DEC000-memory.dmp

memory/2800-4905-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2384-4906-0x0000000002AF0000-0x0000000002B26000-memory.dmp

memory/2384-4909-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2384-4908-0x00000000054D0000-0x0000000005AFA000-memory.dmp

memory/2384-4907-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2384-4910-0x0000000005450000-0x0000000005472000-memory.dmp

memory/2384-4911-0x0000000005C70000-0x0000000005CD6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wvfnc5q4.yxp.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2384-4917-0x0000000074CE0000-0x0000000075491000-memory.dmp

memory/2384-4921-0x0000000005DD0000-0x0000000006127000-memory.dmp

memory/2384-4922-0x00000000062E0000-0x00000000062FE000-memory.dmp

memory/2384-4923-0x00000000065A0000-0x00000000065EC000-memory.dmp

memory/2384-4924-0x00000000074E0000-0x0000000007514000-memory.dmp

memory/2384-4925-0x000000006FDB0000-0x000000006FDFC000-memory.dmp

memory/2384-4934-0x00000000074A0000-0x00000000074BE000-memory.dmp

memory/2384-4935-0x0000000007520000-0x00000000075C4000-memory.dmp

memory/2384-4936-0x0000000007C80000-0x00000000082FA000-memory.dmp

memory/2384-4937-0x0000000007630000-0x000000000764A000-memory.dmp

memory/2384-4938-0x00000000076A0000-0x00000000076AA000-memory.dmp

memory/2384-4939-0x00000000078D0000-0x0000000007966000-memory.dmp

memory/2384-4940-0x0000000007840000-0x0000000007851000-memory.dmp

memory/2384-4941-0x0000000007870000-0x000000000787E000-memory.dmp

memory/2384-4942-0x0000000007880000-0x0000000007895000-memory.dmp

memory/2384-4943-0x0000000007990000-0x00000000079AA000-memory.dmp

memory/2384-4944-0x0000000007970000-0x0000000007978000-memory.dmp

memory/2384-4947-0x0000000074CE0000-0x0000000075491000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

memory/4848-4957-0x0000000005870000-0x0000000005BC7000-memory.dmp

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

MD5 4b0175f5b270c19c66bee0fce809b8b9
SHA1 24ed681638a8784989b08e82188ff6814cb39c8e
SHA256 529d9f230ecbd22db1b4fcd061c6f352b28f45766b34c3185a5476b826a04e42
SHA512 b7f35527c682dbec3009975866d4b4bd771fb3c5a3e1457937f06d63ed23f46aa016fd7d2363976fa2012a8a0e0439caa47f69e0ebeeb842de7ed1df26f29251

memory/4848-4959-0x000000006FDB0000-0x000000006FDFC000-memory.dmp

memory/2800-4969-0x00000000077C0000-0x00000000077CA000-memory.dmp

memory/2800-4970-0x0000000074CE0000-0x0000000075491000-memory.dmp