xworm | be98f5ab32e873468f2ba2fb45215468b0157f7fe894d9af98313444ec945ef6

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 03:34

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General

Target
Tashkent Drive Edition.exe
Size 144KB
Sample240527-d4vpvsfg38
SHA256 be98f5ab32e873468f2ba2fb45215468b0157f7fe894d9af98313444ec945ef6
MD5 302a161addf4cad7c6f078b7c5ad916a
SHA1 01450a35f72a6db951fb07fce749508f8aafe153
SHA512 0c60134a2189554e6d47ef0e4845fe2d661b1d7a021bd530b8a323a2496fa7958dad31feb0022348b9c655a4aac4a9a67b13a1adafcac454a4346fa50796d8bd
SSDEEP 1536:HVK6scO5JV+3tOBPvfbVEaf0Qcf9sm65rvO8S6ROzFkcil31gYDbd:1KRRV+3tOB3fbKXK9vO56kUG6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:53750
involved-delete.gl.at.ply.gg:53750

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3376-1-0x00000000007D0000-0x00000000007FA000-memory.dmp	family_xworm
behavioral2/files/0x00070000000233cb-59.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
3608	powershell.exe
2628	powershell.exe
2032	powershell.exe
2460	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	Tashkent Drive Edition.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4600	svchost.exe
3164	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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Tashkent Drive Edition.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
14	ip-api.com

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
3336	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3608	powershell.exe
3608	powershell.exe
2628	powershell.exe
2628	powershell.exe
2032	powershell.exe
2032	powershell.exe
2460	powershell.exe
2460	powershell.exe
3376	Tashkent Drive Edition.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	Tashkent Drive Edition.exe
Token: SeDebugPrivilege	3608	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	2460	powershell.exe
Token: SeDebugPrivilege	3376	Tashkent Drive Edition.exe
Token: SeDebugPrivilege	4600	svchost.exe
Token: SeDebugPrivilege	3164	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3376	Tashkent Drive Edition.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3376 wrote to memory of 3608	3376	Tashkent Drive Edition.exe	86
PID 3376 wrote to memory of 3608	3376	Tashkent Drive Edition.exe	86
PID 3376 wrote to memory of 2628	3376	Tashkent Drive Edition.exe	89
PID 3376 wrote to memory of 2628	3376	Tashkent Drive Edition.exe	89
PID 3376 wrote to memory of 2032	3376	Tashkent Drive Edition.exe	91
PID 3376 wrote to memory of 2032	3376	Tashkent Drive Edition.exe	91
PID 3376 wrote to memory of 2460	3376	Tashkent Drive Edition.exe	93
PID 3376 wrote to memory of 2460	3376	Tashkent Drive Edition.exe	93
PID 3376 wrote to memory of 3336	3376	Tashkent Drive Edition.exe	97
PID 3376 wrote to memory of 3336	3376	Tashkent Drive Edition.exe	97

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\Tashkent Drive Edition.exe
"C:\Users\Admin\AppData\Local\Temp\Tashkent Drive Edition.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:3376
- 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\Tashkent Drive Edition.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Tashkent Drive Edition.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2628
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2032
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2460
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3336

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4600

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3164

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

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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svchost.exe.log

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

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 8724dc2c3c8e8f17aeefae44a23741b1ea3b43c490fbc52fd61575ffe1cd82bb
MD5 aaaac7c68d2b7997ed502c26fd9f65c2
SHA1 7c5a3731300d672bf53c43e2f9e951c745f7fbdf
SHA512 c526febd9430413b48bed976edd9a795793ad1f06c8ff4f6b768b4ad63f4d2f06b9da72d4fcfa7cb9530a64e2dc3554f5ad97fd0ab60129701d175f2724ef1ac
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 dddb7a05d06f409bfa09e5fbc42c2c6ee65515a5fa634c5584192b531821eb5c
MD5 bef1b6183e0668bfe5ae95d306a2c7ec
SHA1 5c964d3094437f23dae10f825513c496919fb264
SHA512 7706003e8db84a1c8bdef3bb7c1b90882673b889b6639ed0aad8d0e25775abe95cade3508bd55a0799e8a27048a09dbc0ebf926027ceb0c0b16b3e1968d8f373
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5
MD5 da5c82b0e070047f7377042d08093ff4
SHA1 89d05987cd60828cca516c5c40c18935c35e8bd3
SHA512 7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b
MD5 SHA1 SHA512

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__PSScriptPolicyTest_mvq4s4mt.xuf.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mvq4s4mt.xuf.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 144KB
SHA256 be98f5ab32e873468f2ba2fb45215468b0157f7fe894d9af98313444ec945ef6
MD5 302a161addf4cad7c6f078b7c5ad916a
SHA1 01450a35f72a6db951fb07fce749508f8aafe153
SHA512 0c60134a2189554e6d47ef0e4845fe2d661b1d7a021bd530b8a323a2496fa7958dad31feb0022348b9c655a4aac4a9a67b13a1adafcac454a4346fa50796d8bd
SSDEEP 1536:HVK6scO5JV+3tOBPvfbVEaf0Qcf9sm65rvO8S6ROzFkcil31gYDbd:1KRRV+3tOB3fbKXK9vO56kUG6
MD5 SHA1 SHA512 SSDEEP

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memory/3376-1-0x00000000007D0000-0x00000000007FA000-memory.dmp

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memory/3376-2-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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memory/3376-0-0x00007FF8E95B3000-0x00007FF8E95B5000-memory.dmp

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memory/3376-58-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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memory/3376-57-0x00007FF8E95B3000-0x00007FF8E95B5000-memory.dmp

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memory/3608-9-0x000001EAB6F10000-0x000001EAB6F32000-memory.dmp

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memory/3608-18-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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memory/3608-15-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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memory/3608-14-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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memory/3608-8-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

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