Malware Analysis Report

2024-09-11 13:53

Sample ID 240615-ftea8stcpq
Target Ystnmcdkpe.exe
SHA256 e76432493aab33f8765d104d3bbd345b5e8eafafea96b49e462e26b688ba85cf
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 Overview

score
10/10

SHA256

e76432493aab33f8765d104d3bbd345b5e8eafafea96b49e462e26b688ba85cf

Threat Level: Known bad

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

Malicious Activity Summary

xworm execution rat trojan

Detect Xworm Payload

Xworm

Command and Scripting Interpreter: PowerShell

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

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
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 05:09

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 05:09

Reported

2024-06-15 05:10

Platform

win11-20240611-en

Max time kernel

59s

Max time network

61s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.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

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A 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 1540 set thread context of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1540 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe
PID 1236 wrote to memory of 852 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1236 wrote to memory of 852 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1236 wrote to memory of 852 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1236 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1236 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1236 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

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

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

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

"C:\Users\Admin\AppData\Local\Temp\Ystnmcdkpe.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\Ystnmcdkpe.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Ystnmcdkpe.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
US 104.20.3.235:443 pastebin.com tcp
US 64.188.16.134:7861 tcp
US 64.188.16.134:7861 tcp

Files

memory/1540-0-0x000000007466E000-0x000000007466F000-memory.dmp

memory/1540-1-0x0000000000480000-0x00000000008EE000-memory.dmp

memory/1540-2-0x0000000006600000-0x0000000006820000-memory.dmp

memory/1540-3-0x0000000006DD0000-0x0000000007376000-memory.dmp

memory/1540-4-0x00000000068C0000-0x0000000006952000-memory.dmp

memory/1540-14-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-5-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-20-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-53-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-66-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-68-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-65-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-62-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-60-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-58-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-56-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-50-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-48-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-44-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-41-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-54-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-46-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-42-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-36-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-32-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-30-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-26-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-24-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-22-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-19-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-16-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-12-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-10-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-8-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-6-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-38-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-34-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-28-0x0000000006600000-0x000000000681B000-memory.dmp

memory/1540-4891-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/1540-4892-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/1540-4893-0x00000000069D0000-0x0000000006A2C000-memory.dmp

memory/1540-4894-0x0000000006A30000-0x0000000006A7C000-memory.dmp

memory/1540-4895-0x0000000006AE0000-0x0000000006B34000-memory.dmp

memory/1540-4900-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/1236-4901-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/1236-4902-0x0000000000400000-0x0000000000412000-memory.dmp

memory/1236-4903-0x0000000005250000-0x00000000052EC000-memory.dmp

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

MD5 9d0cacca373731660e8268a162d9d4ff
SHA1 a82111d00132cdf7ef46af5681601d55c6a0e17c
SHA256 95932f81206717ff86f0974ee37dc40d5d914f730f00a08344b4c1765d663394
SHA512 8c971ab501fc322b13f53b03325b2295e1eedb12b6d50a4225e6e3b4bf5128665b1a3d8b560a8b04f14bfa6f5cba41058e4f546139101fc303f3b8393f5ca485

memory/1236-4904-0x00000000052F0000-0x0000000005356000-memory.dmp

memory/1236-4905-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/852-4906-0x0000000002A40000-0x0000000002A76000-memory.dmp

memory/852-4907-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/852-4908-0x0000000005460000-0x0000000005A8A000-memory.dmp

memory/852-4909-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/852-4910-0x0000000005B80000-0x0000000005BA2000-memory.dmp

memory/852-4911-0x0000000005C20000-0x0000000005C86000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u5ecxblm.ths.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/852-4921-0x0000000005D70000-0x00000000060C7000-memory.dmp

memory/852-4920-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/852-4922-0x00000000061E0000-0x00000000061FE000-memory.dmp

memory/852-4923-0x0000000006220000-0x000000000626C000-memory.dmp

memory/852-4924-0x00000000071B0000-0x00000000071E4000-memory.dmp

memory/852-4925-0x000000006F730000-0x000000006F77C000-memory.dmp

memory/852-4934-0x00000000071F0000-0x000000000720E000-memory.dmp

memory/852-4935-0x0000000007410000-0x00000000074B4000-memory.dmp

memory/852-4936-0x0000000007B80000-0x00000000081FA000-memory.dmp

memory/852-4937-0x0000000007540000-0x000000000755A000-memory.dmp

memory/852-4938-0x00000000075B0000-0x00000000075BA000-memory.dmp

memory/852-4939-0x00000000077E0000-0x0000000007876000-memory.dmp

memory/852-4940-0x0000000007750000-0x0000000007761000-memory.dmp

memory/852-4941-0x0000000007780000-0x000000000778E000-memory.dmp

memory/852-4942-0x0000000007790000-0x00000000077A5000-memory.dmp

memory/852-4943-0x00000000078A0000-0x00000000078BA000-memory.dmp

memory/852-4944-0x0000000007880000-0x0000000007888000-memory.dmp

memory/852-4947-0x0000000074660000-0x0000000074E11000-memory.dmp

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

MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

memory/1444-4949-0x0000000005630000-0x0000000005987000-memory.dmp

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

MD5 afe136a4141228176741e3771e0c1bfb
SHA1 eb28819b3ab290cd85008ac3673b2ce8c7eae70f
SHA256 a65405c3792f1bcf58abeacd7170a5b4580e3a9be2eab962cbc73249c0b77137
SHA512 ff32c42219327ca1ac1784e45cae65e27d3a27700559e6b544988474eb76d23dfe13297d7e4546209262b3a6047dc77c0b0fc6b6561b0d2eee6bab520b175f84

memory/1444-4959-0x000000006F730000-0x000000006F77C000-memory.dmp

memory/1236-4969-0x0000000006C60000-0x0000000006C6A000-memory.dmp

memory/1236-4970-0x0000000074660000-0x0000000074E11000-memory.dmp

memory/1236-4971-0x0000000006DC0000-0x0000000006DCC000-memory.dmp

memory/1236-4972-0x0000000074660000-0x0000000074E11000-memory.dmp