xworm | 668e1915843fce533abb874f9933deb6136103f5f31d09847a1e086fbaa18e9b

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 21:09

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General

Target
укцу.exe
Size 72KB
Sample240607-zzhemadh87
SHA256 668e1915843fce533abb874f9933deb6136103f5f31d09847a1e086fbaa18e9b
MD5 029acdc2e958ec708b40a237f681ae75
SHA1 3c1ea5e5639bc18153410208429a87a64075a23c
SHA512 96cbe9b27f619831c7d38eb4f8922e53fd3c710af067bb64748aa89de07442b081b7c522dd1da5e659c501e72461b10de1c3883aa19815d9b030843d02c0ceca
SSDEEP 1536:Y0oRipEs7aFqa6XfhIQiMjA/DbO/MoBGM1rujK6gYSOsFbJY:Y0iU7aFqaSRDjKDbO/9N1USOsDY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

european-ba.gl.at.ply.gg:14522

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2504-1-0x0000000000410000-0x0000000000428000-memory.dmp	family_xworm
behavioral2/files/0x000600000001e681-61.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
4860	powershell.exe
2380	powershell.exe
844	powershell.exe
1696	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	укцу.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1708	svchost.exe
1444	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	укцу.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
2252	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4860	powershell.exe
4860	powershell.exe
4860	powershell.exe
2380	powershell.exe
2380	powershell.exe
2380	powershell.exe
844	powershell.exe
844	powershell.exe
844	powershell.exe
1696	powershell.exe
1696	powershell.exe
1696	powershell.exe
2504	укцу.exe
2504	укцу.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	укцу.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	844	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	2504	укцу.exe
Token: SeDebugPrivilege	1708	svchost.exe
Token: SeDebugPrivilege	1444	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2504	укцу.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 4860	2504	укцу.exe	94
PID 2504 wrote to memory of 4860	2504	укцу.exe	94
PID 2504 wrote to memory of 2380	2504	укцу.exe	96
PID 2504 wrote to memory of 2380	2504	укцу.exe	96
PID 2504 wrote to memory of 844	2504	укцу.exe	98
PID 2504 wrote to memory of 844	2504	укцу.exe	98
PID 2504 wrote to memory of 1696	2504	укцу.exe	102
PID 2504 wrote to memory of 1696	2504	укцу.exe	102
PID 2504 wrote to memory of 2252	2504	укцу.exe	105
PID 2504 wrote to memory of 2252	2504	укцу.exe	105

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\укцу.exe
"C:\Users\Admin\AppData\Local\Temp\укцу.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:2504
- 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\укцу.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'укцу.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2380
- 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:844
- 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:1696
- 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:2252

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1708

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1032 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:4732

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1444

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 986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05
MD5 3a6bad9528f8e23fb5c77fbd81fa28e8
SHA1 f127317c3bc6407f536c0f0600dcbcf1aabfba36
SHA512 846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 b2ff191507379930b97a212f869c3774c20b274e8fc9fcc96da5c154fb0e3056
MD5 a9451a6b9669d49bd90704dff21beb85
SHA1 5f93d2dec01a31e04fc90c28eb1c5ca62c6fff80
SHA512 06634cb578f6ce8d721e6306004082073fc224b91ceea37ef870df87b12b2d5f59e7d08b20b520787a1d13f3edbbb004197bf70f180f86dd7f401a5ad289ccb5
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 718dc2f5f4a6dbb7fab7f3db05bd7f602fb16526caae7084ab46c3ab4e7bad35
MD5 65a68df1062af34622552c4f644a5708
SHA1 6f6ecf7b4b635abb0b132d95dac2759dc14b50af
SHA512 4e460eb566032942547b58411222dd26ae300a95f83cf5ae6df58ebd28594341123611b348bd4031a33bc7f38307d5cb8fb677bba8c896919e3eee677a104d4d
MD5 SHA1 SHA512

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__PSScriptPolicyTest_peyp4we1.ehu.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_peyp4we1.ehu.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 72KB
SHA256 668e1915843fce533abb874f9933deb6136103f5f31d09847a1e086fbaa18e9b
MD5 029acdc2e958ec708b40a237f681ae75
SHA1 3c1ea5e5639bc18153410208429a87a64075a23c
SHA512 96cbe9b27f619831c7d38eb4f8922e53fd3c710af067bb64748aa89de07442b081b7c522dd1da5e659c501e72461b10de1c3883aa19815d9b030843d02c0ceca
SSDEEP 1536:Y0oRipEs7aFqa6XfhIQiMjA/DbO/MoBGM1rujK6gYSOsFbJY:Y0iU7aFqaSRDjKDbO/9N1USOsDY
MD5 SHA1 SHA512 SSDEEP

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memory/2504-1-0x0000000000410000-0x0000000000428000-memory.dmp

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memory/2504-2-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/2504-0-0x00007FFCE8883000-0x00007FFCE8885000-memory.dmp

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memory/2504-60-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/2504-59-0x00007FFCE8883000-0x00007FFCE8885000-memory.dmp

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memory/4860-4-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/4860-20-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/4860-17-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/4860-16-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/4860-15-0x000001EFF99B0000-0x000001EFF99D2000-memory.dmp

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memory/4860-14-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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memory/4860-3-0x00007FFCE8880000-0x00007FFCE9341000-memory.dmp

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