xworm | e860a3c718b864a28f858b63b4418b45e93bd238fae19e8da8224c410e9eb772

General

Target

Internal.vmp.exe
Size

71KB
MD5

58559a2f3b00bd938dd1f26a8fdf0e7c
SHA1

6a07c99804295019e52eb4b3fcac0560f8a9acf2
SHA256

e860a3c718b864a28f858b63b4418b45e93bd238fae19e8da8224c410e9eb772
SHA512

c9cd1129163c6146b4238d917b8b150c5498bc01ed2304f6c099702e7e333853f447162f5ca723db33a08b082861703379b829b7a099cc1e52444b56bfac0d19
SSDEEP

1536:3RE/PlVX7qHW83cPkCCSbBUFOXuUccI6kuq9QOmYlyy:3REVV0W8sPPCSbBUIXdOTMy

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:47599

147.185.221.23:47599

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3996-1-0x0000000000360000-0x0000000000378000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
1328	powershell.exe
4384	powershell.exe
1000	powershell.exe
3248	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	Internal.vmp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	Internal.vmp.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-1-5-21-3587106988-279496464-3440778474-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Internal.vmp.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
1	ip-api.com

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
400	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1328	powershell.exe
1328	powershell.exe
4384	powershell.exe
4384	powershell.exe
1000	powershell.exe
1000	powershell.exe
3248	powershell.exe
3248	powershell.exe
3996	Internal.vmp.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	Internal.vmp.exe
Token: SeDebugPrivilege	1328	powershell.exe
Token: SeDebugPrivilege	4384	powershell.exe
Token: SeDebugPrivilege	1000	powershell.exe
Token: SeDebugPrivilege	3248	powershell.exe
Token: SeDebugPrivilege	3996	Internal.vmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3996	Internal.vmp.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 1328	3996	Internal.vmp.exe	80
PID 3996 wrote to memory of 1328	3996	Internal.vmp.exe	80
PID 3996 wrote to memory of 4384	3996	Internal.vmp.exe	82
PID 3996 wrote to memory of 4384	3996	Internal.vmp.exe	82
PID 3996 wrote to memory of 1000	3996	Internal.vmp.exe	84
PID 3996 wrote to memory of 1000	3996	Internal.vmp.exe	84
PID 3996 wrote to memory of 3248	3996	Internal.vmp.exe	86
PID 3996 wrote to memory of 3248	3996	Internal.vmp.exe	86
PID 3996 wrote to memory of 400	3996	Internal.vmp.exe	88
PID 3996 wrote to memory of 400	3996	Internal.vmp.exe	88

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Internal.vmp.exe
"C:\Users\Admin\AppData\Local\Temp\Internal.vmp.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3996
- 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\Internal.vmp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1328
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Internal.vmp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4384
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3248
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
e07eea85a8893f23fb814cf4b3ed974c

SHA1
8a8125b2890bbddbfc3531d0ee4393dbbf5936fe

SHA256
83387ce468d717a7b4ba238af2273da873b731a13cc35604f775a31fa0ac70ea

SHA512
9d4808d8a261005391388b85da79e4c5396bdded6e7e5ce3a3a23e7359d1aa1fb983b4324f97e0afec6e8ed9d898322ca258dd7cda654456dd7e84c9cbd509df

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

Filesize
944B

MD5
80b42fe4c6cf64624e6c31e5d7f2d3b3

SHA1
1f93e7dd83b86cb900810b7e3e43797868bf7d93

SHA256
ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

SHA512
83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xr1tctyo.p0f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1328-12-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-13-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-14-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-15-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-16-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-19-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/1328-11-0x00000252331F0000-0x0000025233212000-memory.dmp

Filesize
136KB

Download
memory/3996-0-0x00007FFE8EB83000-0x00007FFE8EB85000-memory.dmp

Filesize
8KB

Download
memory/3996-2-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download
memory/3996-1-0x0000000000360000-0x0000000000378000-memory.dmp

Filesize
96KB

Download
memory/3996-55-0x00007FFE8EB83000-0x00007FFE8EB85000-memory.dmp

Filesize
8KB

Download
memory/3996-56-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads