xworm | 1d9d5421af5c484e34ba49a9a7ec61e1dfdef6c41b0017ff761342589dacccfb

General

Target

9858b58784c5c31cb009b460f358dbe0N.exe
Size

59KB
MD5

9858b58784c5c31cb009b460f358dbe0
SHA1

4071b7d709faf8e420a8f42977c99fcf40fd5eb2
SHA256

1d9d5421af5c484e34ba49a9a7ec61e1dfdef6c41b0017ff761342589dacccfb
SHA512

ceeb63003184857240e1a670cbea6f8c469dfc134f066f771944518a3de32550877032661d14bf8a11c61b6445d35c9658be619d1aa35841c1ee6c723b439167
SSDEEP

1536:5gkAOwHZCiQnb5k0wLCzlcaH9nSHi9dS1EAd8IIu:5QYnb5Cuz9SHi3gEA6IIu

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:43771

y-drives.gl.at.ply.gg:43771:43771

Attributes

Install_directory
%AppData%
install_file
dllhuy.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4012-1-0x00000000008C0000-0x00000000008D4000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3180	powershell.exe
2444	powershell.exe
2680	powershell.exe
4320	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	9858b58784c5c31cb009b460f358dbe0N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dllhuy.lnk	9858b58784c5c31cb009b460f358dbe0N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dllhuy.lnk	9858b58784c5c31cb009b460f358dbe0N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhuy = "C:\\Users\\Admin\\AppData\\Roaming\\dllhuy.exe"	9858b58784c5c31cb009b460f358dbe0N.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
22	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3180	powershell.exe
3180	powershell.exe
2444	powershell.exe
2444	powershell.exe
2680	powershell.exe
2680	powershell.exe
4320	powershell.exe
4320	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4012	9858b58784c5c31cb009b460f358dbe0N.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeDebugPrivilege	4012	9858b58784c5c31cb009b460f358dbe0N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4012 wrote to memory of 3180	4012	9858b58784c5c31cb009b460f358dbe0N.exe	92
PID 4012 wrote to memory of 3180	4012	9858b58784c5c31cb009b460f358dbe0N.exe	92
PID 4012 wrote to memory of 2444	4012	9858b58784c5c31cb009b460f358dbe0N.exe	94
PID 4012 wrote to memory of 2444	4012	9858b58784c5c31cb009b460f358dbe0N.exe	94
PID 4012 wrote to memory of 2680	4012	9858b58784c5c31cb009b460f358dbe0N.exe	96
PID 4012 wrote to memory of 2680	4012	9858b58784c5c31cb009b460f358dbe0N.exe	96
PID 4012 wrote to memory of 4320	4012	9858b58784c5c31cb009b460f358dbe0N.exe	99
PID 4012 wrote to memory of 4320	4012	9858b58784c5c31cb009b460f358dbe0N.exe	99

C:\Users\Admin\AppData\Local\Temp\9858b58784c5c31cb009b460f358dbe0N.exe
"C:\Users\Admin\AppData\Local\Temp\9858b58784c5c31cb009b460f358dbe0N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4012
- 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\9858b58784c5c31cb009b460f358dbe0N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3180
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '9858b58784c5c31cb009b460f358dbe0N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2444
- 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\dllhuy.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dllhuy.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6c47b3f4e68eebd47e9332eebfd2dd4e

SHA1
67f0b143336d7db7b281ed3de5e877fa87261834

SHA256
8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c

SHA512
0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

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

Filesize
944B

MD5
87710d90c6f6fd01fd6c58ed33b40b08

SHA1
16f74fba4891c24d5dde0c2911d39bbee5a059e3

SHA256
9da5fe088f7f3da66368c88020cd77b42dc817c97631c0dabce87a39d706eef6

SHA512
b0afd32e7eb777f16f27b15820d93ec811a095b8a67827c4ae4e81018cae5d5dca84f21b58bb0f79eeaa8d9fde3f6fe816aa2a92b6603ba2e66960b60943faef

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

Filesize
944B

MD5
36ce492590dae6a99dc720c4b441342d

SHA1
f33cf61dad0c21b77afa23e8288152dd51effeb3

SHA256
e049e9723cef24d71a65551cfbe9463e3ab6de1c9ac059511ae5f461a3becde5

SHA512
f291a68555f9970fe51f7dae052dfd5e2c01ff4ebb275d8a348bb7fcb6eb744fb3ce55006a850a9571ae8d0c5763f87ff1ce0f0f67e83794f4cc0056aa27935d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1jjw3bnu.3mq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3180-3-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3180-11-0x0000016DF5A40000-0x0000016DF5A62000-memory.dmp

Filesize
136KB

Download
memory/3180-15-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3180-18-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3180-4-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4012-0-0x00007FFF213E3000-0x00007FFF213E5000-memory.dmp

Filesize
8KB

Download
memory/4012-2-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4012-1-0x00000000008C0000-0x00000000008D4000-memory.dmp

Filesize
80KB

Download
memory/4012-57-0x00007FFF213E3000-0x00007FFF213E5000-memory.dmp

Filesize
8KB

Download
memory/4012-58-0x00007FFF213E0000-0x00007FFF21EA1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads