xworm | 78fcb48378cf09fb03113e97a004b26f97804db82e2b7576a9fe8f3db30c0427

Analysis

max time kernel
1798s
max time network
1795s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-08-2024 11:51

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General

Target

XClient.exe
Size

64KB
MD5

13e5ac905bb5655efd425daaed600f1f
SHA1

2c211997ec7aa0901beee092e46cc44f963c0bb9
SHA256

78fcb48378cf09fb03113e97a004b26f97804db82e2b7576a9fe8f3db30c0427
SHA512

e9fb6351f5f6d296b04885681712cece21f6efa40c7fb940b60b98d569f1b6ed37b9f7597ece20beb4d2fa5b4c40f43011017d79ccd3d419bc324ddca2ecbf10
SSDEEP

1536:+abfnPbNx6OO3fX6kbhvci6YPOscUG6a++:+abPTzRS6kbhlOscUGz7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

ii-rebate.gl.at.ply.gg:62928

Attributes

Install_directory
%Temp%

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2200-1-0x0000000000FC0000-0x0000000000FD6000-memory.dmp	family_xworm
behavioral1/files/0x000f0000000233b6-56.dat	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
4980	powershell.exe
776	powershell.exe
4256	powershell.exe
4604	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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	XClient.exe

Executes dropped EXE 30 IoCs

pid	Process
2932	$77-Installer
5056	$77-Installer
4048	$77-Installer
1832	$77-Installer
3432	$77-Installer
1436	$77-Installer
836	$77-Installer
1228	$77-Installer
4380	$77-Installer
1772	$77-Installer
4560	$77-Installer
900	$77-Installer
1888	$77-Installer
1896	$77-Installer
5044	$77-Installer
952	$77-Installer
1960	$77-Installer
4868	$77-Installer
4072	$77-Installer
4256	$77-Installer
2404	$77-Installer
2344	$77-Installer
2732	$77-Installer
4544	$77-Installer
888	$77-Installer
4528	$77-Installer
4964	$77-Installer
3308	$77-Installer
4492	$77-Installer
3160	$77-Installer

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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77-Installer = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$77-Installer"	XClient.exe

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
836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
776	powershell.exe
776	powershell.exe
4256	powershell.exe
4256	powershell.exe
4604	powershell.exe
4604	powershell.exe
4980	powershell.exe
4980	powershell.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2200	XClient.exe
Token: SeDebugPrivilege	776	powershell.exe
Token: SeDebugPrivilege	4256	powershell.exe
Token: SeDebugPrivilege	4604	powershell.exe
Token: SeDebugPrivilege	4980	powershell.exe
Token: SeDebugPrivilege	2200	XClient.exe
Token: SeDebugPrivilege	2932	$77-Installer
Token: SeDebugPrivilege	5056	$77-Installer
Token: SeDebugPrivilege	4048	$77-Installer
Token: SeDebugPrivilege	1832	$77-Installer
Token: SeDebugPrivilege	3432	$77-Installer
Token: SeDebugPrivilege	1436	$77-Installer
Token: SeDebugPrivilege	836	$77-Installer
Token: SeDebugPrivilege	1228	$77-Installer
Token: SeDebugPrivilege	4380	$77-Installer
Token: SeDebugPrivilege	1772	$77-Installer
Token: SeDebugPrivilege	4560	$77-Installer
Token: SeDebugPrivilege	900	$77-Installer
Token: SeDebugPrivilege	1888	$77-Installer
Token: SeDebugPrivilege	1896	$77-Installer
Token: SeDebugPrivilege	5044	$77-Installer
Token: SeDebugPrivilege	952	$77-Installer
Token: SeDebugPrivilege	1960	$77-Installer
Token: SeDebugPrivilege	4868	$77-Installer
Token: SeDebugPrivilege	4072	$77-Installer
Token: SeDebugPrivilege	4256	$77-Installer
Token: SeDebugPrivilege	2404	$77-Installer
Token: SeDebugPrivilege	2344	$77-Installer
Token: SeDebugPrivilege	2732	$77-Installer
Token: SeDebugPrivilege	4544	$77-Installer
Token: SeDebugPrivilege	888	$77-Installer
Token: SeDebugPrivilege	4528	$77-Installer
Token: SeDebugPrivilege	4964	$77-Installer
Token: SeDebugPrivilege	3308	$77-Installer
Token: SeDebugPrivilege	4492	$77-Installer
Token: SeDebugPrivilege	3160	$77-Installer

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 776	2200	XClient.exe	88
PID 2200 wrote to memory of 776	2200	XClient.exe	88
PID 2200 wrote to memory of 4256	2200	XClient.exe	93
PID 2200 wrote to memory of 4256	2200	XClient.exe	93
PID 2200 wrote to memory of 4604	2200	XClient.exe	96
PID 2200 wrote to memory of 4604	2200	XClient.exe	96
PID 2200 wrote to memory of 4980	2200	XClient.exe	98
PID 2200 wrote to memory of 4980	2200	XClient.exe	98
PID 2200 wrote to memory of 836	2200	XClient.exe	100
PID 2200 wrote to memory of 836	2200	XClient.exe	100

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
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2200
- 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:776
- 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:4256
- 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\$77-Installer'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4604
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77-Installer'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4980
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77-Installer" /tr "C:\Users\Admin\AppData\Local\Temp\$77-Installer"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:836

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2932

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5056

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4048

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1832

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3432

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1436

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:836

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1228

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4380

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1772

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4560

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:900

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1888

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5044

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:952

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1960

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4868

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4072

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4256

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2404

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2344

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2732

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4544

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:888

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4528

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4964

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3308

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4492

C:\Users\Admin\AppData\Local\Temp\$77-Installer
C:\Users\Admin\AppData\Local\Temp\$77-Installer
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3160

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

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77-Installer.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
944B

MD5
465286a9b31a4fa4831f9d3a2925c88e

SHA1
4ba832802f83872ff47a59ace1057bceb38a1955

SHA256
24522f12ccd8284ed705803f2c1a3b12ba7d675d300fed443ca9eb55fead55fb

SHA512
84e4d5f00257670fea86e4397f3b814174609daf24488a82c4ce726f81b5891561a8c56d4053c76a8bc27318685d482dae5e15ba28c1cd14049c15bd552f95f5

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\$77-Installer

Filesize
64KB

MD5
13e5ac905bb5655efd425daaed600f1f

SHA1
2c211997ec7aa0901beee092e46cc44f963c0bb9

SHA256
78fcb48378cf09fb03113e97a004b26f97804db82e2b7576a9fe8f3db30c0427

SHA512
e9fb6351f5f6d296b04885681712cece21f6efa40c7fb940b60b98d569f1b6ed37b9f7597ece20beb4d2fa5b4c40f43011017d79ccd3d419bc324ddca2ecbf10

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wmqkmuj0.00m.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/776-13-0x00000226E9F40000-0x00000226E9F62000-memory.dmp

Filesize
136KB

Download
memory/776-16-0x00000226EA5D0000-0x00000226EA7EC000-memory.dmp

Filesize
2.1MB

Download
memory/776-17-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/776-3-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/776-2-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/2200-0-0x00007FF820BB3000-0x00007FF820BB5000-memory.dmp

Filesize
8KB

Download
memory/2200-54-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/2200-55-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/2200-1-0x0000000000FC0000-0x0000000000FD6000-memory.dmp

Filesize
88KB

Download
memory/4256-30-0x0000029C433A0000-0x0000029C435BC000-memory.dmp

Filesize
2.1MB

Download