xworm | ed36eacbc76c5bc86ceeb156854e849ee67d76a184b0253482debcfb62fba3fa

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 20:51

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General

Target
asdasdad.exe
Size 74KB
Sample240620-znk2da1cqq
SHA256 ed36eacbc76c5bc86ceeb156854e849ee67d76a184b0253482debcfb62fba3fa
MD5 d62d222608d78f29b15f92dd4f9f4e5d
SHA1 0b70375a0cdf1d4ca899919fd6ca9f53412b8584
SHA512 dde2c93119d14c5cc11db3b42e5d001b44a8d62ed8e880aabf1121a8444b718ecc43af9b157bf7c2efcc2eae92ff714b2744ce2cd54d0fe9f65e875fbaeab655
SSDEEP 1536:sup3MUPfMgueeXUJt9X1WT22E9x6khKbbfQq2NCzltZg6k1Q3wSOsk2MvMeO:sY3MUxJt9XwkKbbfM0tZWSOZ2MEeO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm evasion execution rat trojan

Malware Config

Extracted

Family

xworm

Version

silver-bowl.gl.at.ply.gg:29206

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral2/files/0x000c0000000233ae-66.dat	disable_win_def

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/228-1-0x0000000000800000-0x0000000000818000-memory.dmp	family_xworm

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	WScript.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	WScript.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	WScript.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	WScript.exe

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1484	powershell.exe
3280	powershell.exe
1764	powershell.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	asdasdad.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\asdasdad.lnk	asdasdad.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\asdasdad.lnk	asdasdad.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
25	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000_Classes\Local Settings	asdasdad.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1484	powershell.exe
1484	powershell.exe
3280	powershell.exe
3280	powershell.exe
1764	powershell.exe
1764	powershell.exe
228	asdasdad.exe
4864	powershell.exe
3356	powershell.exe
3356	powershell.exe
1696	powershell.exe
1696	powershell.exe
1256	powershell.exe
1256	powershell.exe
1256	powershell.exe
3356	powershell.exe
4732	powershell.exe
4732	powershell.exe
4576	powershell.exe
4576	powershell.exe
4808	powershell.exe
4808	powershell.exe
1260	powershell.exe
1260	powershell.exe
4576	powershell.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	228	asdasdad.exe
Token: SeDebugPrivilege	1484	powershell.exe
Token: SeDebugPrivilege	3280	powershell.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: SeDebugPrivilege	228	asdasdad.exe
Token: SeDebugPrivilege	4864	powershell.exe
Token: SeDebugPrivilege	3356	powershell.exe
Token: SeDebugPrivilege	1256	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	4732	powershell.exe
Token: SeDebugPrivilege	4576	powershell.exe
Token: SeDebugPrivilege	4808	powershell.exe
Token: SeDebugPrivilege	1260	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
228	asdasdad.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 1484	228	asdasdad.exe	90
PID 228 wrote to memory of 1484	228	asdasdad.exe	90
PID 228 wrote to memory of 3280	228	asdasdad.exe	93
PID 228 wrote to memory of 3280	228	asdasdad.exe	93
PID 228 wrote to memory of 1764	228	asdasdad.exe	95
PID 228 wrote to memory of 1764	228	asdasdad.exe	95
PID 228 wrote to memory of 3036	228	asdasdad.exe	113
PID 228 wrote to memory of 3036	228	asdasdad.exe	113
PID 3036 wrote to memory of 2692	3036	WScript.exe	114
PID 3036 wrote to memory of 2692	3036	WScript.exe	114
PID 2692 wrote to memory of 4864	2692	WScript.exe	115
PID 2692 wrote to memory of 4864	2692	WScript.exe	115
PID 2692 wrote to memory of 1696	2692	WScript.exe	117
PID 2692 wrote to memory of 1696	2692	WScript.exe	117
PID 2692 wrote to memory of 3356	2692	WScript.exe	119
PID 2692 wrote to memory of 3356	2692	WScript.exe	119
PID 2692 wrote to memory of 1256	2692	WScript.exe	121
PID 2692 wrote to memory of 1256	2692	WScript.exe	121
PID 2692 wrote to memory of 4732	2692	WScript.exe	123
PID 2692 wrote to memory of 4732	2692	WScript.exe	123
PID 2692 wrote to memory of 4576	2692	WScript.exe	125
PID 2692 wrote to memory of 4576	2692	WScript.exe	125
PID 2692 wrote to memory of 4808	2692	WScript.exe	127
PID 2692 wrote to memory of 4808	2692	WScript.exe	127
PID 2692 wrote to memory of 1260	2692	WScript.exe	129
PID 2692 wrote to memory of 1260	2692	WScript.exe	129
PID 2692 wrote to memory of 2080	2692	WScript.exe	131
PID 2692 wrote to memory of 2080	2692	WScript.exe	131
PID 2692 wrote to memory of 4476	2692	WScript.exe	133
PID 2692 wrote to memory of 4476	2692	WScript.exe	133
PID 2692 wrote to memory of 5092	2692	WScript.exe	135
PID 2692 wrote to memory of 5092	2692	WScript.exe	135

C:\Users\Admin\AppData\Local\Temp\asdasdad.exe
"C:\Users\Admin\AppData\Local\Temp\asdasdad.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:228
- 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\asdasdad.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'asdasdad.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3280
- 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\asdasdad.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1764
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\aliaac.vbs"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\aliaac.vbs" /elevate
    3⤵
    - Modifies Windows Defender Real-time Protection settings
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2692
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -DisableRealtimeMonitoring $true
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4864
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -DisableBehaviorMonitoring $true
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1696
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -DisableBlockAtFirstSeen $true
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3356
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -DisableIOAVProtection $true
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1256
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -DisableScriptScanning $true
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4732
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -SubmitSamplesConsent 2
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4576
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -MAPSReporting 0
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4808
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -HighThreatDefaultAction 6 -Force
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1260
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ModerateThreatDefaultAction 6
      4⤵
      PID:2080
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -LowThreatDefaultAction 6
      4⤵
      PID:4476
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -SevereThreatDefaultAction 6
      4⤵
      PID:5092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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