xworm | 552395ebc69975a174f299e3fac4909585eda51ed1554281165ba640f53f9679

Analysis

max time kernel
146s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 14:18

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General

Target
2031gojosatoru.exe
Size 79KB
Sample240530-rmse3abd4z
SHA256 552395ebc69975a174f299e3fac4909585eda51ed1554281165ba640f53f9679
MD5 f686daf477cd61c3eb72515148c22e05
SHA1 a3689bf018dd135b924a4a98f82613ea2cc83b3a
SHA512 cd6af2ebccfb7671965c255ad54f0e651c2c1f6ffb9ce832f39ac8998adb2bae42df6251730be2c884d75485890c30801d173675259e113b30c782ec7cccf153
SSDEEP 1536:cqdGeH5wKOnDvi9r3JP7FiXqbU4s29iobdAJ6QOBWoFEBqPoUC:iP9D4317FkqbUzKdWOBWoF6Hj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

19.ip.gl.ply.gg:45758
ads-enabled.gl.at.ply.gg:45758

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/388-1-0x0000000000810000-0x000000000082A000-memory.dmp	family_xworm
behavioral2/files/0x00080000000229e1-58.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
4632	powershell.exe
3332	powershell.exe
3136	powershell.exe
4928	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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2031gojosatoru.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	2031gojosatoru.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	2031gojosatoru.exe

Executes dropped EXE 2 IoCs

pid	Process
532	XClient.exe
4560	XClient.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-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	2031gojosatoru.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4928	powershell.exe
4928	powershell.exe
4632	powershell.exe
4632	powershell.exe
3332	powershell.exe
3332	powershell.exe
3136	powershell.exe
3136	powershell.exe
388	2031gojosatoru.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	388	2031gojosatoru.exe
Token: SeDebugPrivilege	4928	powershell.exe
Token: SeDebugPrivilege	4632	powershell.exe
Token: SeDebugPrivilege	3332	powershell.exe
Token: SeDebugPrivilege	3136	powershell.exe
Token: SeDebugPrivilege	388	2031gojosatoru.exe
Token: SeDebugPrivilege	532	XClient.exe
Token: SeDebugPrivilege	4560	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
388	2031gojosatoru.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 4928	388	2031gojosatoru.exe	90
PID 388 wrote to memory of 4928	388	2031gojosatoru.exe	90
PID 388 wrote to memory of 4632	388	2031gojosatoru.exe	92
PID 388 wrote to memory of 4632	388	2031gojosatoru.exe	92
PID 388 wrote to memory of 3332	388	2031gojosatoru.exe	96
PID 388 wrote to memory of 3332	388	2031gojosatoru.exe	96
PID 388 wrote to memory of 3136	388	2031gojosatoru.exe	98
PID 388 wrote to memory of 3136	388	2031gojosatoru.exe	98
PID 388 wrote to memory of 2948	388	2031gojosatoru.exe	100
PID 388 wrote to memory of 2948	388	2031gojosatoru.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\2031gojosatoru.exe
"C:\Users\Admin\AppData\Local\Temp\2031gojosatoru.exe"
1⤵
- Checks computer location settings
- 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:388
- 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\2031gojosatoru.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '2031gojosatoru.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4632
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3332
- 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:3136
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2948

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:532

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

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

XClient.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438
MD5 cadef9abd087803c630df65264a6c81c
SHA1 babbf3636c347c8727c35f3eef2ee643dbcc4bd2
SHA512 7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 fafde5bec1db5e838e0a43603714686f9911b7aaa8d8ff0fe40f9496a7b38747
MD5 2524e72b0573fa94e9cb8089728a4b47
SHA1 3d5c4dfd6e7632153e687ee866f8ecc70730a0f1
SHA512 99a7593a82353f792a58ea99196330aaa8c34ac2f616f0be4b4ca4f76388485866ba96dc62d9b8e7627c1df6a1f74111342307ba82400adce5adac68b47a6fa8
MD5 SHA1 SHA512

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__PSScriptPolicyTest_jcmsza0a.ukt.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jcmsza0a.ukt.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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XClient.exe

Path C:\Users\Admin\AppData\Roaming\XClient.exe
Size 79KB
SHA256 552395ebc69975a174f299e3fac4909585eda51ed1554281165ba640f53f9679
MD5 f686daf477cd61c3eb72515148c22e05
SHA1 a3689bf018dd135b924a4a98f82613ea2cc83b3a
SHA512 cd6af2ebccfb7671965c255ad54f0e651c2c1f6ffb9ce832f39ac8998adb2bae42df6251730be2c884d75485890c30801d173675259e113b30c782ec7cccf153
SSDEEP 1536:cqdGeH5wKOnDvi9r3JP7FiXqbU4s29iobdAJ6QOBWoFEBqPoUC:iP9D4317FkqbUzKdWOBWoF6Hj
MD5 SHA1 SHA512 SSDEEP

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memory/388-56-0x00007FFD5DB13000-0x00007FFD5DB15000-memory.dmp

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memory/388-55-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

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memory/388-0-0x00007FFD5DB13000-0x00007FFD5DB15000-memory.dmp

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memory/388-57-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

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memory/388-1-0x0000000000810000-0x000000000082A000-memory.dmp

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memory/4928-16-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

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memory/4928-13-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

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memory/4928-12-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

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memory/4928-11-0x0000012026590000-0x00000120265B2000-memory.dmp

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