xworm | 668e1915843fce533abb874f9933deb6136103f5f31d09847a1e086fbaa18e9b

Analysis

max time kernel
149s
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
09/06/2024, 01:01

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General

Target
029acdc2e958ec708b40a237f681ae75.exe
Size 72KB
Sample240609-bc995abg75
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/4376-1-0x0000000000A40000-0x0000000000A58000-memory.dmp	family_xworm
behavioral2/files/0x000e000000022ad6-59.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
1552	powershell.exe
2764	powershell.exe
3240	powershell.exe
1792	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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	029acdc2e958ec708b40a237f681ae75.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	029acdc2e958ec708b40a237f681ae75.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	029acdc2e958ec708b40a237f681ae75.exe

Executes dropped EXE 2 IoCs

pid	Process
3256	svchost.exe
1420	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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	029acdc2e958ec708b40a237f681ae75.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
13	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
3620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1552	powershell.exe
1552	powershell.exe
2764	powershell.exe
2764	powershell.exe
3240	powershell.exe
3240	powershell.exe
1792	powershell.exe
1792	powershell.exe
4376	029acdc2e958ec708b40a237f681ae75.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	029acdc2e958ec708b40a237f681ae75.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeDebugPrivilege	1792	powershell.exe
Token: SeDebugPrivilege	4376	029acdc2e958ec708b40a237f681ae75.exe
Token: SeDebugPrivilege	3256	svchost.exe
Token: SeDebugPrivilege	1420	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4376	029acdc2e958ec708b40a237f681ae75.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 1552	4376	029acdc2e958ec708b40a237f681ae75.exe	88
PID 4376 wrote to memory of 1552	4376	029acdc2e958ec708b40a237f681ae75.exe	88
PID 4376 wrote to memory of 2764	4376	029acdc2e958ec708b40a237f681ae75.exe	90
PID 4376 wrote to memory of 2764	4376	029acdc2e958ec708b40a237f681ae75.exe	90
PID 4376 wrote to memory of 3240	4376	029acdc2e958ec708b40a237f681ae75.exe	92
PID 4376 wrote to memory of 3240	4376	029acdc2e958ec708b40a237f681ae75.exe	92
PID 4376 wrote to memory of 1792	4376	029acdc2e958ec708b40a237f681ae75.exe	94
PID 4376 wrote to memory of 1792	4376	029acdc2e958ec708b40a237f681ae75.exe	94
PID 4376 wrote to memory of 3620	4376	029acdc2e958ec708b40a237f681ae75.exe	97
PID 4376 wrote to memory of 3620	4376	029acdc2e958ec708b40a237f681ae75.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\029acdc2e958ec708b40a237f681ae75.exe
"C:\Users\Admin\AppData\Local\Temp\029acdc2e958ec708b40a237f681ae75.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:4376
- 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\029acdc2e958ec708b40a237f681ae75.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '029acdc2e958ec708b40a237f681ae75.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2764
- 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:3240
- 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:1792
- 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:3620

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3256

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1420

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 58238de09a8817ed9f894ed8e5bf06a897fd08e0b0bd77e508d37b2598edd2a9
MD5 ecceac16628651c18879d836acfcb062
SHA1 420502b3e5220a01586c59504e94aa1ee11982c9
SHA512 be3c7cb529cafb00f58790a6f8b35c4ff6db9f7f43a507d2218fd80cebc88413e46f71b1bc35b8afcc36b68f9409c946470d1e74a4fe225400eeb6f3f898f5b3
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 43dc153f22a8d306e0c130d1231bb60778c6f4e0bd20be875e79771c71392391
MD5 1fee44d99fc4afa998e1fbe887d4133f
SHA1 4ce4177db7e940ba0b7adf9ce7fa5dc0732481f3
SHA512 a6abcb17b4c739f96172f7dc6ee5ba9e8e2c6c73286d1af85644b3cae1c18cfc4613bf84d0d88eff4d952cf4bb66161309dc1293b2d9a45841024d1260d73a4d
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a12763453f79453dd8f25f0c90d001ffb5d409ec698491666c9f076c6bc60d8c
MD5 8f659389c6e21eb0c627fbae833500c7
SHA1 ae632f1e4af08587934ff168155b30e2b28d7475
SHA512 f4849e0b1d6ab3d4dd054f590a359af8dd1b9d3df2ad78033ad1a59ebafb1ca96aa76fa9061a466d74e8e3266dc882818d79db47908b21ca3ef8be20e427d327
MD5 SHA1 SHA512

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__PSScriptPolicyTest_qaypbnvk.v0k.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qaypbnvk.v0k.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/1552-10-0x00000156F9790000-0x00000156F97B2000-memory.dmp

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memory/1552-17-0x00007FF84DF60000-0x00007FF84EA21000-memory.dmp

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memory/1552-4-0x00007FF84DF60000-0x00007FF84EA21000-memory.dmp

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memory/1552-3-0x00007FF84DF60000-0x00007FF84EA21000-memory.dmp

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memory/2764-30-0x0000012EC6490000-0x0000012EC66AC000-memory.dmp

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memory/4376-2-0x00007FF84DF60000-0x00007FF84EA21000-memory.dmp

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memory/4376-0-0x00007FF84DF63000-0x00007FF84DF65000-memory.dmp

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memory/4376-57-0x00007FF84DF63000-0x00007FF84DF65000-memory.dmp

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memory/4376-58-0x00007FF84DF60000-0x00007FF84EA21000-memory.dmp

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memory/4376-1-0x0000000000A40000-0x0000000000A58000-memory.dmp

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