xworm | 17edbd6b374bc695acd4f5e9e12ff27d7bca977ee06db54012388dfe7b3e5cc8

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 14:20

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General

Target
Pm2N2C2ndXU2J.exe
Size 85KB
Sample240530-rnq9dsce65
SHA256 17edbd6b374bc695acd4f5e9e12ff27d7bca977ee06db54012388dfe7b3e5cc8
MD5 5c6fef1fff51ccb0110e57777177bc84
SHA1 807be583f49b7512a8e1aac11d6c2475028c7abf
SHA512 02795e12e22853a506db78f2f9960fe90904605dcbadd20b97994cb8db35be2f516ce0e37a5d3509ccf4a2c581ac21b74f9facb46427bc633a061d56816a13af
SSDEEP 1536:EyM6UKCWBzEisHQFU5JmxdF+bGN0d/KSI6dMOk0QuNPDUz:EMBVxDUi+bGQNQOk0QYO
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
detcvto.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3168-1-0x0000000000800000-0x000000000081C000-memory.dmp	family_xworm
behavioral2/files/0x000c000000022abb-57.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
1924	powershell.exe
1320	powershell.exe
5076	powershell.exe
1740	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Pm2N2C2ndXU2J.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\detcvto.lnk	Pm2N2C2ndXU2J.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\detcvto.lnk	Pm2N2C2ndXU2J.exe

Executes dropped EXE 3 IoCs

pid	Process
2584	detcvto.exe
1128	detcvto.exe
4988	detcvto.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\detcvto = "C:\\Users\\Admin\\AppData\\Roaming\\detcvto.exe"	Pm2N2C2ndXU2J.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
1020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1740	powershell.exe
1740	powershell.exe
1924	powershell.exe
1924	powershell.exe
1320	powershell.exe
1320	powershell.exe
5076	powershell.exe
5076	powershell.exe
3168	Pm2N2C2ndXU2J.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3168	Pm2N2C2ndXU2J.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	1924	powershell.exe
Token: SeDebugPrivilege	1320	powershell.exe
Token: SeDebugPrivilege	5076	powershell.exe
Token: SeDebugPrivilege	3168	Pm2N2C2ndXU2J.exe
Token: SeDebugPrivilege	2584	detcvto.exe
Token: SeDebugPrivilege	1128	detcvto.exe
Token: SeDebugPrivilege	4988	detcvto.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3168	Pm2N2C2ndXU2J.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 1740	3168	Pm2N2C2ndXU2J.exe	92
PID 3168 wrote to memory of 1740	3168	Pm2N2C2ndXU2J.exe	92
PID 3168 wrote to memory of 1924	3168	Pm2N2C2ndXU2J.exe	96
PID 3168 wrote to memory of 1924	3168	Pm2N2C2ndXU2J.exe	96
PID 3168 wrote to memory of 1320	3168	Pm2N2C2ndXU2J.exe	98
PID 3168 wrote to memory of 1320	3168	Pm2N2C2ndXU2J.exe	98
PID 3168 wrote to memory of 5076	3168	Pm2N2C2ndXU2J.exe	100
PID 3168 wrote to memory of 5076	3168	Pm2N2C2ndXU2J.exe	100
PID 3168 wrote to memory of 1020	3168	Pm2N2C2ndXU2J.exe	103
PID 3168 wrote to memory of 1020	3168	Pm2N2C2ndXU2J.exe	103

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\Pm2N2C2ndXU2J.exe
"C:\Users\Admin\AppData\Local\Temp\Pm2N2C2ndXU2J.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:3168
- 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\Pm2N2C2ndXU2J.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Pm2N2C2ndXU2J.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1924
- 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\detcvto.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'detcvto.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5076
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "detcvto" /tr "C:\Users\Admin\AppData\Roaming\detcvto.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1020

C:\Users\Admin\AppData\Roaming\detcvto.exe
C:\Users\Admin\AppData\Roaming\detcvto.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2584

C:\Users\Admin\AppData\Roaming\detcvto.exe
C:\Users\Admin\AppData\Roaming\detcvto.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1128

C:\Users\Admin\AppData\Roaming\detcvto.exe
C:\Users\Admin\AppData\Roaming\detcvto.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4988

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

detcvto.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\detcvto.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 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
MD5 6d42b6da621e8df5674e26b799c8e2aa
SHA1 ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA512 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961
MD5 15dde0683cd1ca19785d7262f554ba93
SHA1 d039c577e438546d10ac64837b05da480d06bf69
SHA512 57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 c89240e395a581db1b44d204e2bcbd5b0e7f636ac72585d8257e6b901f5a3615
MD5 9078a011b49db705765cff4b845368b0
SHA1 533576940a2780b894e1ae46b17d2f4224051b77
SHA512 48e0896fc4818bb7e3f250c5cad70d5e4ce71d3f6a8d2d17d8becc36050c1de2a270fde8dea5bb3462f1e7f5eaf074053390934f26d0186113215a1c4e92dd1e
MD5 SHA1 SHA512

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__PSScriptPolicyTest_z5e1vdnm.tcq.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z5e1vdnm.tcq.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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detcvto.exe

Path C:\Users\Admin\AppData\Roaming\detcvto.exe
Size 85KB
SHA256 17edbd6b374bc695acd4f5e9e12ff27d7bca977ee06db54012388dfe7b3e5cc8
MD5 5c6fef1fff51ccb0110e57777177bc84
SHA1 807be583f49b7512a8e1aac11d6c2475028c7abf
SHA512 02795e12e22853a506db78f2f9960fe90904605dcbadd20b97994cb8db35be2f516ce0e37a5d3509ccf4a2c581ac21b74f9facb46427bc633a061d56816a13af
SSDEEP 1536:EyM6UKCWBzEisHQFU5JmxdF+bGN0d/KSI6dMOk0QuNPDUz:EMBVxDUi+bGQNQOk0QYO
MD5 SHA1 SHA512 SSDEEP

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memory/1740-12-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1740-17-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1740-14-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1740-13-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1740-2-0x000001349FD90000-0x000001349FDB2000-memory.dmp

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memory/3168-0-0x00007FF8418E3000-0x00007FF8418E5000-memory.dmp

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memory/3168-56-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/3168-60-0x00007FF8418E3000-0x00007FF8418E5000-memory.dmp

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memory/3168-61-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/3168-1-0x0000000000800000-0x000000000081C000-memory.dmp

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