xworm | c6ac39bb6bd04c72e7c1f23b6d98b7a3ae591efa9ef285458b27bef353a255cb

Analysis

max time kernel
147s
max time network
150s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
20-11-2024 20:17

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General

Target

XClient.exe
Size

75KB
MD5

03ac7cea640de499ffd4d820cbf91aec
SHA1

c5431178ad49172a65398770a03fecccc37f711f
SHA256

c6ac39bb6bd04c72e7c1f23b6d98b7a3ae591efa9ef285458b27bef353a255cb
SHA512

52186a0938de15b83873626f72f594219dc193b1d5b7fbec5d2577761488f3379d5cd42e6de205964f6dec5cdfc3023de36375da28a0146a5311ab0516f23d7c
SSDEEP

1536:2L1YZRemnhY0X1+Q3jaHPjbIbnFJ8v6sqKoO4o0iD8:22ZPhhzOHobnv6oOz0iA

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:64112

FRERE-57054.portmap.host:64112

solutions-stunning.gl.at.ply.gg:64112:64112

solutions-stunning.gl.at.ply.gg:64112

Attributes

Install_directory
%Public%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1764-1-0x0000000000B50000-0x0000000000B6A000-memory.dmp	family_xworm
behavioral2/files/0x002c000000045052-58.dat	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
2660	powershell.exe
1720	powershell.exe
2480	powershell.exe
3200	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-1-5-21-641261377-2215826147-608237349-1000\Control Panel\International\Geo\Nation	XClient.exe

Executes dropped EXE 3 IoCs

pid	Process
1044	XClient.exe
4460	XClient.exe
3288	XClient.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
15	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
5508	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3200	powershell.exe
3200	powershell.exe
2660	powershell.exe
2660	powershell.exe
1720	powershell.exe
1720	powershell.exe
2480	powershell.exe
2480	powershell.exe
1764	XClient.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	XClient.exe
Token: SeDebugPrivilege	3200	powershell.exe
Token: SeIncreaseQuotaPrivilege	3200	powershell.exe
Token: SeSecurityPrivilege	3200	powershell.exe
Token: SeTakeOwnershipPrivilege	3200	powershell.exe
Token: SeLoadDriverPrivilege	3200	powershell.exe
Token: SeSystemProfilePrivilege	3200	powershell.exe
Token: SeSystemtimePrivilege	3200	powershell.exe
Token: SeProfSingleProcessPrivilege	3200	powershell.exe
Token: SeIncBasePriorityPrivilege	3200	powershell.exe
Token: SeCreatePagefilePrivilege	3200	powershell.exe
Token: SeBackupPrivilege	3200	powershell.exe
Token: SeRestorePrivilege	3200	powershell.exe
Token: SeShutdownPrivilege	3200	powershell.exe
Token: SeDebugPrivilege	3200	powershell.exe
Token: SeSystemEnvironmentPrivilege	3200	powershell.exe
Token: SeRemoteShutdownPrivilege	3200	powershell.exe
Token: SeUndockPrivilege	3200	powershell.exe
Token: SeManageVolumePrivilege	3200	powershell.exe
Token: 33	3200	powershell.exe
Token: 34	3200	powershell.exe
Token: 35	3200	powershell.exe
Token: 36	3200	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeIncreaseQuotaPrivilege	2660	powershell.exe
Token: SeSecurityPrivilege	2660	powershell.exe
Token: SeTakeOwnershipPrivilege	2660	powershell.exe
Token: SeLoadDriverPrivilege	2660	powershell.exe
Token: SeSystemProfilePrivilege	2660	powershell.exe
Token: SeSystemtimePrivilege	2660	powershell.exe
Token: SeProfSingleProcessPrivilege	2660	powershell.exe
Token: SeIncBasePriorityPrivilege	2660	powershell.exe
Token: SeCreatePagefilePrivilege	2660	powershell.exe
Token: SeBackupPrivilege	2660	powershell.exe
Token: SeRestorePrivilege	2660	powershell.exe
Token: SeShutdownPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeSystemEnvironmentPrivilege	2660	powershell.exe
Token: SeRemoteShutdownPrivilege	2660	powershell.exe
Token: SeUndockPrivilege	2660	powershell.exe
Token: SeManageVolumePrivilege	2660	powershell.exe
Token: 33	2660	powershell.exe
Token: 34	2660	powershell.exe
Token: 35	2660	powershell.exe
Token: 36	2660	powershell.exe
Token: SeDebugPrivilege	1720	powershell.exe
Token: SeIncreaseQuotaPrivilege	1720	powershell.exe
Token: SeSecurityPrivilege	1720	powershell.exe
Token: SeTakeOwnershipPrivilege	1720	powershell.exe
Token: SeLoadDriverPrivilege	1720	powershell.exe
Token: SeSystemProfilePrivilege	1720	powershell.exe
Token: SeSystemtimePrivilege	1720	powershell.exe
Token: SeProfSingleProcessPrivilege	1720	powershell.exe
Token: SeIncBasePriorityPrivilege	1720	powershell.exe
Token: SeCreatePagefilePrivilege	1720	powershell.exe
Token: SeBackupPrivilege	1720	powershell.exe
Token: SeRestorePrivilege	1720	powershell.exe
Token: SeShutdownPrivilege	1720	powershell.exe
Token: SeDebugPrivilege	1720	powershell.exe
Token: SeSystemEnvironmentPrivilege	1720	powershell.exe
Token: SeRemoteShutdownPrivilege	1720	powershell.exe
Token: SeUndockPrivilege	1720	powershell.exe
Token: SeManageVolumePrivilege	1720	powershell.exe
Token: 33	1720	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1764	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 3200	1764	XClient.exe	87
PID 1764 wrote to memory of 3200	1764	XClient.exe	87
PID 1764 wrote to memory of 2660	1764	XClient.exe	91
PID 1764 wrote to memory of 2660	1764	XClient.exe	91
PID 1764 wrote to memory of 1720	1764	XClient.exe	93
PID 1764 wrote to memory of 1720	1764	XClient.exe	93
PID 1764 wrote to memory of 2480	1764	XClient.exe	95
PID 1764 wrote to memory of 2480	1764	XClient.exe	95
PID 1764 wrote to memory of 5508	1764	XClient.exe	98
PID 1764 wrote to memory of 5508	1764	XClient.exe	98

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1764
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3200
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1720
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2480
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Public\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5508

C:\Users\Public\XClient.exe
"C:\Users\Public\XClient.exe"
1⤵
- Executes dropped EXE
PID:1044

C:\Users\Public\XClient.exe
"C:\Users\Public\XClient.exe"
1⤵
- Executes dropped EXE
PID:4460

C:\Users\Public\XClient.exe
"C:\Users\Public\XClient.exe"
1⤵
- Executes dropped EXE
PID:3288

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

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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\XClient.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
af1cc13f412ef37a00e668df293b1584

SHA1
8973b3e622f187fcf484a0eb9fa692bf3e2103cb

SHA256
449c0c61734cf23f28ad05a7e528f55dd8a7c6ae7a723253707e5f73de187037

SHA512
75d954ec8b98f804d068635875fac06e9594874f0f5d6e2ad9d6267285d1d4a1de6309009de9e2956c6477a888db648396f77a1a49b58287d2683b8214e7a3d3

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

Filesize
1KB

MD5
32be9b13143c056a85df7bf948ae4778

SHA1
36baf529bc3a034344d8d2fe2d82c814c53e8b6c

SHA256
f896b3276cb29751b872e4e37e970a87be7be09b0986331b36a0d8a431a144a5

SHA512
6cdf4448008f8a2903857e173e87af20ca0e5169c7da477c3eb4d2549b82d588550951b2edc7478d4efacbea7414f89d67b0fa841c26c81df7286f0d4c5798a1

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

Filesize
1KB

MD5
659758516c38937acaf2cb4a8949a801

SHA1
ee4515ef9e8f2dfdcb75f778bc863138db79acb2

SHA256
f7258d776aac35c77baa6f3c71e25a933617b8ab33cdfa5d3d1e652902ad73ee

SHA512
d7cd73734cd1cc1894ad176a8d8915d66e489a1ef09562be6f9e3a0aadeceaa88b6700ad223550da8a22766f98af1e12d961a15ee1f2d38408fdd60ddc0a51ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ha0lt4fk.di4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\XClient.exe

Filesize
75KB

MD5
03ac7cea640de499ffd4d820cbf91aec

SHA1
c5431178ad49172a65398770a03fecccc37f711f

SHA256
c6ac39bb6bd04c72e7c1f23b6d98b7a3ae591efa9ef285458b27bef353a255cb

SHA512
52186a0938de15b83873626f72f594219dc193b1d5b7fbec5d2577761488f3379d5cd42e6de205964f6dec5cdfc3023de36375da28a0146a5311ab0516f23d7c

Download Submit
memory/1764-63-0x000000001C310000-0x000000001C31C000-memory.dmp

Filesize
48KB

Download
memory/1764-57-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/1764-56-0x00007FF9B5113000-0x00007FF9B5115000-memory.dmp

Filesize
8KB

Download
memory/1764-0-0x00007FF9B5113000-0x00007FF9B5115000-memory.dmp

Filesize
8KB

Download
memory/1764-2-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/1764-1-0x0000000000B50000-0x0000000000B6A000-memory.dmp

Filesize
104KB

Download
memory/3200-13-0x0000019BF9D80000-0x0000019BF9DA2000-memory.dmp

Filesize
136KB

Download
memory/3200-20-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/3200-17-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/3200-16-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/3200-15-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/3200-14-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download
memory/3200-3-0x00007FF9B5110000-0x00007FF9B5BD2000-memory.dmp

Filesize
10.8MB

Download