xworm | 0cc35e594ffd17ad9d51f824445dc7e391a74535e575c9d638b0402cf49e612c

Analysis

max time kernel
32s
max time network
50s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
21-01-2025 12:49

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General

Target

Winrar Code Craker.exe
Size

4.0MB
MD5

0f34e7a485d0884daae6dec91541b742
SHA1

e366c430f4cf375dd96ca92edfe06ff165869e46
SHA256

0cc35e594ffd17ad9d51f824445dc7e391a74535e575c9d638b0402cf49e612c
SHA512

8e966e4a13beb16713a22bfd467f3fc18a81d47cbdf421ba113c5ec5b86a12011a50a82adf6b4e9bc6e37f6e8ca468420eaf30d62cab749a221e1f0b9a4018ec
SSDEEP

98304:YkhH66TO4Za+CtcszUqoLmO/AWyeT7DJgBSEpxEydq2EdtIONLG:c6QcBdCRWyen1zE7Ey8JdyONG

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

jynx.uncofig.com:1111

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x002a0000000461b3-6.dat	family_xworm
behavioral1/memory/4188-16-0x0000000000B10000-0x0000000000B2A000-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
2124	powershell.exe
4624	powershell.exe
4720	powershell.exe
3016	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-1-5-21-3454535599-122122096-1812617400-1000\Control Panel\International\Geo\Nation	Winrar Code Craker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3454535599-122122096-1812617400-1000\Control Panel\International\Geo\Nation	helper.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4188	helper.exe
2780	winrar-x64-701fr.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-1-5-21-3454535599-122122096-1812617400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	helper.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
12	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4188	helper.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2124	powershell.exe
2124	powershell.exe
4624	powershell.exe
4624	powershell.exe
4720	powershell.exe
4720	powershell.exe
3016	powershell.exe
3016	powershell.exe
4188	helper.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4188	helper.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeIncreaseQuotaPrivilege	2124	powershell.exe
Token: SeSecurityPrivilege	2124	powershell.exe
Token: SeTakeOwnershipPrivilege	2124	powershell.exe
Token: SeLoadDriverPrivilege	2124	powershell.exe
Token: SeSystemProfilePrivilege	2124	powershell.exe
Token: SeSystemtimePrivilege	2124	powershell.exe
Token: SeProfSingleProcessPrivilege	2124	powershell.exe
Token: SeIncBasePriorityPrivilege	2124	powershell.exe
Token: SeCreatePagefilePrivilege	2124	powershell.exe
Token: SeBackupPrivilege	2124	powershell.exe
Token: SeRestorePrivilege	2124	powershell.exe
Token: SeShutdownPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeSystemEnvironmentPrivilege	2124	powershell.exe
Token: SeRemoteShutdownPrivilege	2124	powershell.exe
Token: SeUndockPrivilege	2124	powershell.exe
Token: SeManageVolumePrivilege	2124	powershell.exe
Token: 33	2124	powershell.exe
Token: 34	2124	powershell.exe
Token: 35	2124	powershell.exe
Token: 36	2124	powershell.exe
Token: SeDebugPrivilege	4624	powershell.exe
Token: SeIncreaseQuotaPrivilege	4624	powershell.exe
Token: SeSecurityPrivilege	4624	powershell.exe
Token: SeTakeOwnershipPrivilege	4624	powershell.exe
Token: SeLoadDriverPrivilege	4624	powershell.exe
Token: SeSystemProfilePrivilege	4624	powershell.exe
Token: SeSystemtimePrivilege	4624	powershell.exe
Token: SeProfSingleProcessPrivilege	4624	powershell.exe
Token: SeIncBasePriorityPrivilege	4624	powershell.exe
Token: SeCreatePagefilePrivilege	4624	powershell.exe
Token: SeBackupPrivilege	4624	powershell.exe
Token: SeRestorePrivilege	4624	powershell.exe
Token: SeShutdownPrivilege	4624	powershell.exe
Token: SeDebugPrivilege	4624	powershell.exe
Token: SeSystemEnvironmentPrivilege	4624	powershell.exe
Token: SeRemoteShutdownPrivilege	4624	powershell.exe
Token: SeUndockPrivilege	4624	powershell.exe
Token: SeManageVolumePrivilege	4624	powershell.exe
Token: 33	4624	powershell.exe
Token: 34	4624	powershell.exe
Token: 35	4624	powershell.exe
Token: 36	4624	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeIncreaseQuotaPrivilege	4720	powershell.exe
Token: SeSecurityPrivilege	4720	powershell.exe
Token: SeTakeOwnershipPrivilege	4720	powershell.exe
Token: SeLoadDriverPrivilege	4720	powershell.exe
Token: SeSystemProfilePrivilege	4720	powershell.exe
Token: SeSystemtimePrivilege	4720	powershell.exe
Token: SeProfSingleProcessPrivilege	4720	powershell.exe
Token: SeIncBasePriorityPrivilege	4720	powershell.exe
Token: SeCreatePagefilePrivilege	4720	powershell.exe
Token: SeBackupPrivilege	4720	powershell.exe
Token: SeRestorePrivilege	4720	powershell.exe
Token: SeShutdownPrivilege	4720	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeSystemEnvironmentPrivilege	4720	powershell.exe
Token: SeRemoteShutdownPrivilege	4720	powershell.exe
Token: SeUndockPrivilege	4720	powershell.exe
Token: SeManageVolumePrivilege	4720	powershell.exe
Token: 33	4720	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2780	winrar-x64-701fr.exe
2780	winrar-x64-701fr.exe
4188	helper.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 4188	5048	Winrar Code Craker.exe	81
PID 5048 wrote to memory of 4188	5048	Winrar Code Craker.exe	81
PID 5048 wrote to memory of 2780	5048	Winrar Code Craker.exe	82
PID 5048 wrote to memory of 2780	5048	Winrar Code Craker.exe	82
PID 4188 wrote to memory of 2124	4188	helper.exe	87
PID 4188 wrote to memory of 2124	4188	helper.exe	87
PID 4188 wrote to memory of 4624	4188	helper.exe	91
PID 4188 wrote to memory of 4624	4188	helper.exe	91
PID 4188 wrote to memory of 4720	4188	helper.exe	93
PID 4188 wrote to memory of 4720	4188	helper.exe	93
PID 4188 wrote to memory of 3016	4188	helper.exe	95
PID 4188 wrote to memory of 3016	4188	helper.exe	95

C:\Users\Admin\AppData\Local\Temp\Winrar Code Craker.exe
"C:\Users\Admin\AppData\Local\Temp\Winrar Code Craker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Roaming\helper.exe
  "C:\Users\Admin\AppData\Roaming\helper.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4188
- - 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\helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2124
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4624
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4720
- - 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
    - Suspicious behavior: EnumeratesProcesses
    PID:3016
- C:\Users\Admin\AppData\Roaming\winrar-x64-701fr.exe
  "C:\Users\Admin\AppData\Roaming\winrar-x64-701fr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
08b59cf8e2e3a929ea95184bf5aa591a

SHA1
4f515ff72e582be6122d1642996c1e575c515e2b

SHA256
dc31980e5e8823ff48fd4c1e8fec022358d874c21d3ba766c64fae24ad3aeeeb

SHA512
c1af66be8dfaaf2ab50487e77438f9d78bca794fd3e2378cd4f4fb67b4038a02f606b9e8258c29cf0988400b72b903bf3d403b0b6c47c2bc87f4702d644eab71

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

Filesize
1KB

MD5
ab32499043a441383170e414ca1018f1

SHA1
0027492fe66931ddc2a4639ab5e19fe6a80f6d93

SHA256
62ab54b7dd9bfc934155a94e44911813dfa7d15e8e8076975061a8207b1a6a46

SHA512
6510c0497b0423231bb234cb9289a5fb8c983a9efc750b9390f00fa273f232e2946b9d79a94d87ca1ed4d8a40ee51f82170359fa3e857a294df683914d219f9d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y1px1gch.ij5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\helper.exe

Filesize
81KB

MD5
bac22f7b34e1324af3401020d4831867

SHA1
6240c0d1ab52a65738a958ca3c5e360f7f0a2b6f

SHA256
9541d84a204d6271f0ba7bdfa7513d7f555e7f73fbf0142acdb347b61a9f821d

SHA512
2f8d100c90b8a816504f64b594f1a6f7e300bd4f080d4926581f279dca594b7c8342ec941f175782b599cfdb823b60582097d045ba8b57a1826521dd1d283ab5

Download Submit
C:\Users\Admin\AppData\Roaming\winrar-x64-701fr.exe

Filesize
3.9MB

MD5
d512d8b27ad9910d66f8ce62086b413b

SHA1
4873eabfbb4280a0042a6b0bb65ca0eea0b72832

SHA256
1b8f832471a20e82b4252b81c63bb2cf6e3da335d889d877d5bacc4ae28f99a2

SHA512
4b69ee83456dfced538685984f381835bdc84fa9e4b297d1c213fda4e3dd166ce70a1639eb4ab8abbe59b64b7a9f87a7dbfefcbe45ee74d42d362138134f8ae4

Download Submit
memory/2124-40-0x0000023BE17C0000-0x0000023BE17E2000-memory.dmp

Filesize
136KB

Download
memory/4188-16-0x0000000000B10000-0x0000000000B2A000-memory.dmp

Filesize
104KB

Download
memory/4188-34-0x00007FFD63170000-0x00007FFD63C32000-memory.dmp

Filesize
10.8MB

Download
memory/4188-28-0x00007FFD63170000-0x00007FFD63C32000-memory.dmp

Filesize
10.8MB

Download
memory/4188-85-0x00007FFD63170000-0x00007FFD63C32000-memory.dmp

Filesize
10.8MB

Download
memory/4188-86-0x00007FFD63170000-0x00007FFD63C32000-memory.dmp

Filesize
10.8MB

Download
memory/5048-0-0x00007FFD63173000-0x00007FFD63175000-memory.dmp

Filesize
8KB

Download
memory/5048-1-0x00000000006C0000-0x0000000000AC0000-memory.dmp

Filesize
4.0MB

Download