xworm | fde50f0142a28aa4729653fd6d20fe24444b4de78db287e6257377e617d4ffeb

Analysis

max time kernel
150s
max time network
152s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
05/03/2025, 20:47

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General

Target

injector.exe
Size

9.7MB
MD5

86a51d640ea68877541d015596110871
SHA1

9ba1687ba37d28db708b9a458350b646f7f6d1ec
SHA256

fde50f0142a28aa4729653fd6d20fe24444b4de78db287e6257377e617d4ffeb
SHA512

78184bf183807df518449ed5a6e38c3668c645bd9fa22cc9c2adb8786e1a5eb435e43ab5c551b998947ea76f03499c599e9428d7f6ccbb72a912f356b884d8b8
SSDEEP

196608:q9Fi1rHBpQ8du9iLK8KyUmydMdRqg3fDsu4/f8QeN:nhndhPPqWboi

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%Public%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/kADeGNZE

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000a000000027dd7-16.dat	family_xworm
behavioral1/memory/2388-28-0x00000000001A0000-0x00000000001B8000-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
636	powershell.exe
928	powershell.exe
2340	powershell.exe
4364	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	injector.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	COM Surrogate.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
1324	injector.exe
2388	COM Surrogate.exe
1372	svchost.exe
1788	svchost.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-1-5-21-983685854-559653692-675906587-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Public\\svchost.exe"	COM Surrogate.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
11	pastebin.com
12	pastebin.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
1196	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe
1324	injector.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2388	COM Surrogate.exe
Token: SeDebugPrivilege	636	powershell.exe
Token: SeIncreaseQuotaPrivilege	636	powershell.exe
Token: SeSecurityPrivilege	636	powershell.exe
Token: SeTakeOwnershipPrivilege	636	powershell.exe
Token: SeLoadDriverPrivilege	636	powershell.exe
Token: SeSystemProfilePrivilege	636	powershell.exe
Token: SeSystemtimePrivilege	636	powershell.exe
Token: SeProfSingleProcessPrivilege	636	powershell.exe
Token: SeIncBasePriorityPrivilege	636	powershell.exe
Token: SeCreatePagefilePrivilege	636	powershell.exe
Token: SeBackupPrivilege	636	powershell.exe
Token: SeRestorePrivilege	636	powershell.exe
Token: SeShutdownPrivilege	636	powershell.exe
Token: SeDebugPrivilege	636	powershell.exe
Token: SeSystemEnvironmentPrivilege	636	powershell.exe
Token: SeRemoteShutdownPrivilege	636	powershell.exe
Token: SeUndockPrivilege	636	powershell.exe
Token: SeManageVolumePrivilege	636	powershell.exe
Token: 33	636	powershell.exe
Token: 34	636	powershell.exe
Token: 35	636	powershell.exe
Token: 36	636	powershell.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeIncreaseQuotaPrivilege	928	powershell.exe
Token: SeSecurityPrivilege	928	powershell.exe
Token: SeTakeOwnershipPrivilege	928	powershell.exe
Token: SeLoadDriverPrivilege	928	powershell.exe
Token: SeSystemProfilePrivilege	928	powershell.exe
Token: SeSystemtimePrivilege	928	powershell.exe
Token: SeProfSingleProcessPrivilege	928	powershell.exe
Token: SeIncBasePriorityPrivilege	928	powershell.exe
Token: SeCreatePagefilePrivilege	928	powershell.exe
Token: SeBackupPrivilege	928	powershell.exe
Token: SeRestorePrivilege	928	powershell.exe
Token: SeShutdownPrivilege	928	powershell.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeSystemEnvironmentPrivilege	928	powershell.exe
Token: SeRemoteShutdownPrivilege	928	powershell.exe
Token: SeUndockPrivilege	928	powershell.exe
Token: SeManageVolumePrivilege	928	powershell.exe
Token: 33	928	powershell.exe
Token: 34	928	powershell.exe
Token: 35	928	powershell.exe
Token: 36	928	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeIncreaseQuotaPrivilege	2340	powershell.exe
Token: SeSecurityPrivilege	2340	powershell.exe
Token: SeTakeOwnershipPrivilege	2340	powershell.exe
Token: SeLoadDriverPrivilege	2340	powershell.exe
Token: SeSystemProfilePrivilege	2340	powershell.exe
Token: SeSystemtimePrivilege	2340	powershell.exe
Token: SeProfSingleProcessPrivilege	2340	powershell.exe
Token: SeIncBasePriorityPrivilege	2340	powershell.exe
Token: SeCreatePagefilePrivilege	2340	powershell.exe
Token: SeBackupPrivilege	2340	powershell.exe
Token: SeRestorePrivilege	2340	powershell.exe
Token: SeShutdownPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeSystemEnvironmentPrivilege	2340	powershell.exe
Token: SeRemoteShutdownPrivilege	2340	powershell.exe
Token: SeUndockPrivilege	2340	powershell.exe
Token: SeManageVolumePrivilege	2340	powershell.exe
Token: 33	2340	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2388	COM Surrogate.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 1324	2840	injector.exe	80
PID 2840 wrote to memory of 1324	2840	injector.exe	80
PID 2840 wrote to memory of 2388	2840	injector.exe	82
PID 2840 wrote to memory of 2388	2840	injector.exe	82
PID 2388 wrote to memory of 636	2388	COM Surrogate.exe	83
PID 2388 wrote to memory of 636	2388	COM Surrogate.exe	83
PID 2388 wrote to memory of 928	2388	COM Surrogate.exe	86
PID 2388 wrote to memory of 928	2388	COM Surrogate.exe	86
PID 2388 wrote to memory of 2340	2388	COM Surrogate.exe	88
PID 2388 wrote to memory of 2340	2388	COM Surrogate.exe	88
PID 2388 wrote to memory of 4364	2388	COM Surrogate.exe	90
PID 2388 wrote to memory of 4364	2388	COM Surrogate.exe	90
PID 2388 wrote to memory of 1196	2388	COM Surrogate.exe	92
PID 2388 wrote to memory of 1196	2388	COM Surrogate.exe	92

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\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Users\Admin\AppData\Local\injector.exe
  "C:\Users\Admin\AppData\Local\injector.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:1324
- C:\Users\Admin\AppData\Local\COM Surrogate.exe
  "C:\Users\Admin\AppData\Local\COM Surrogate.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2388
- - 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\COM Surrogate.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of AdjustPrivilegeToken
    PID:636
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'COM Surrogate.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of AdjustPrivilegeToken
    PID:928
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of AdjustPrivilegeToken
    PID:2340
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    PID:4364
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1196

C:\Users\Public\svchost.exe
"C:\Users\Public\svchost.exe"
1⤵
- Executes dropped EXE
PID:1372

C:\Users\Public\svchost.exe
"C:\Users\Public\svchost.exe"
1⤵
- Executes dropped EXE
PID:1788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\COM Surrogate.exe

Filesize
69KB

MD5
533f3b108a18d4bdcb42329a42e740c6

SHA1
fe59ee9912580e99c127205ed59da725495dd037

SHA256
de7574564048511af92e161a95921b4295e013f0f9603895d2eaefb4aec005ac

SHA512
1936e292e6ffa20497c2944f4aa2d05e76e0a0a52cf836b24f8b1901daa8025ff95481f222ec453bacbcbad97389ffd69ab84cdcb1b4c636aecdbcead50663a2

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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

Filesize
1KB

MD5
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
1KB

MD5
5c2dd8ca5836e32bff91fc157e00442a

SHA1
21b71a8d52976929136ad00f88922cd5ce1764af

SHA256
2ca464a71dfba7d3580a169c3c5a7836e4676fa1c5ac794215fdfce56edd2d3d

SHA512
f339adb95666fd79af28dba4d5c96447322ca521c218c0390a89b1ddd0b3fbe37be62cbf5889ab6898380aa876e00885ecd2f39451f3dd9e0b994b276286cc7d

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

Filesize
1KB

MD5
d12bf0977e627c7b7f0a3b7592d68397

SHA1
b6bb910a4a2c554d9df0de4d691ec4e5e54c36bb

SHA256
8256f2f7bfc45a2c3829e2d80e064f23953dcca670fe5a86ec09c822c895dabe

SHA512
01367196d606710f73ea36216d57262b4efa612fde0c55e280607076e762f85963f3584b241bc4e67cba7fd53f6a59571378ebd116e5f1a8c824082976c86c7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mkpigtmr.3ce.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\injector.exe

Filesize
40KB

MD5
525f01625963a71151e81f8b20ebb31e

SHA1
b7930fddd0d56ddbcf5fec090e66186833521a5e

SHA256
0d75a2406b1485056c7371bb94ea642dd61b6dc967a27d1a8f3d065857a74d4f

SHA512
f8986dacf8896512f4b313de4eb2d8fa3f4a4de1aa4e59d1d161dcbd8d632f4354608826c332fc4d042c665fc64c4f6ce29cd2382d7d611ed5e8c9a67882bc91

Download Submit
memory/636-40-0x00000196A2710000-0x00000196A2732000-memory.dmp

Filesize
136KB

Download
memory/2388-28-0x00000000001A0000-0x00000000001B8000-memory.dmp

Filesize
96KB

Download
memory/2388-30-0x00007FFFB5AB0000-0x00007FFFB6572000-memory.dmp

Filesize
10.8MB

Download
memory/2388-81-0x00007FFFB5AB0000-0x00007FFFB6572000-memory.dmp

Filesize
10.8MB

Download
memory/2388-82-0x00007FFFB5AB0000-0x00007FFFB6572000-memory.dmp

Filesize
10.8MB

Download
memory/2388-83-0x00007FFFB5AB0000-0x00007FFFB6572000-memory.dmp

Filesize
10.8MB

Download
memory/2388-84-0x00000000022C0000-0x00000000022CC000-memory.dmp

Filesize
48KB

Download
memory/2840-0-0x00007FFFB5AB3000-0x00007FFFB5AB5000-memory.dmp

Filesize
8KB

Download
memory/2840-1-0x0000000000CC0000-0x000000000167A000-memory.dmp

Filesize
9.7MB

Download