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
behavioral1/memory/1908-1-0x0000000000B40000-0x0000000000B54000-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
2200	powershell.exe
2512	powershell.exe
2928	powershell.exe
2612	powershell.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-1-5-21-3551809350-4263495960-1443967649-1000\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
4	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 4 IoCs

pid	Process
2928	powershell.exe
2612	powershell.exe
2200	powershell.exe
2512	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	9858b58784c5c31cb009b460f358dbe0N.exe
Token: SeDebugPrivilege	2928	powershell.exe
Token: SeDebugPrivilege	2612	powershell.exe
Token: SeDebugPrivilege	2200	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeDebugPrivilege	1908	9858b58784c5c31cb009b460f358dbe0N.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2928	1908	9858b58784c5c31cb009b460f358dbe0N.exe	31
PID 1908 wrote to memory of 2928	1908	9858b58784c5c31cb009b460f358dbe0N.exe	31
PID 1908 wrote to memory of 2928	1908	9858b58784c5c31cb009b460f358dbe0N.exe	31
PID 1908 wrote to memory of 2612	1908	9858b58784c5c31cb009b460f358dbe0N.exe	33
PID 1908 wrote to memory of 2612	1908	9858b58784c5c31cb009b460f358dbe0N.exe	33
PID 1908 wrote to memory of 2612	1908	9858b58784c5c31cb009b460f358dbe0N.exe	33
PID 1908 wrote to memory of 2200	1908	9858b58784c5c31cb009b460f358dbe0N.exe	35
PID 1908 wrote to memory of 2200	1908	9858b58784c5c31cb009b460f358dbe0N.exe	35
PID 1908 wrote to memory of 2200	1908	9858b58784c5c31cb009b460f358dbe0N.exe	35
PID 1908 wrote to memory of 2512	1908	9858b58784c5c31cb009b460f358dbe0N.exe	37
PID 1908 wrote to memory of 2512	1908	9858b58784c5c31cb009b460f358dbe0N.exe	37
PID 1908 wrote to memory of 2512	1908	9858b58784c5c31cb009b460f358dbe0N.exe	37

C:\Users\Admin\AppData\Local\Temp\9858b58784c5c31cb009b460f358dbe0N.exe
"C:\Users\Admin\AppData\Local\Temp\9858b58784c5c31cb009b460f358dbe0N.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908
- 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:2928
- 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:2612
- 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:2200
- 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:2512

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\40BMLDEITNCNHO0H1C6X.temp

Filesize
7KB

MD5
d2c8793551f13b4dd1faf0f513916d22

SHA1
fcd47d4647684242361db5208f241f47069fe5a4

SHA256
fa650227d0651d8e19ac53b830cea0effc21c211dfb79e40a6990355daec7088

SHA512
349e60aa960667c0d68a25e06ac2224e9def5c426f2730edad14710354d0d35b1f40e112d91d3bf15d4e9890629f861d2f1e8dc93c7442f9b32fea8ebc96bdbf

Download Submit
memory/1908-0-0x000007FEF5E13000-0x000007FEF5E14000-memory.dmp

Filesize
4KB

Download
memory/1908-1-0x0000000000B40000-0x0000000000B54000-memory.dmp

Filesize
80KB

Download
memory/1908-2-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/1908-28-0x000007FEF5E13000-0x000007FEF5E14000-memory.dmp

Filesize
4KB

Download
memory/1908-33-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2612-15-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2612-16-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2928-7-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/2928-8-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2928-9-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads