xworm | 583fc29a0246146f01dd62d45a1310913514b190784032dd8fb85a02a7f03568

Analysis

max time kernel
148s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
06/06/2024, 10:24

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General

Target
Proverka.exe
Size 61KB
Sample240606-mfpclsdh22
SHA256 583fc29a0246146f01dd62d45a1310913514b190784032dd8fb85a02a7f03568
MD5 c57723883c0cc14df39984fdc01602f8
SHA1 4b3f132ed3f645941b3bf552db356a57ed938745
SHA512 0fb662124be6ed5b521755181bc4248ddbb5d17adc9bd59170a4d90355b574aa1027df73821c068e395983eeab66ef6681af24bc9823fd00bb89c87b7f924f28
SSDEEP 1536:YGtmNZtJtXlTiYxbGq+wRG36dROHvKtY:YMKtXlBxbGq6eROH2Y
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

word-belize.gl.at.ply.gg:1678

Attributes

Install_directory
%LocalAppData%

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4336-1-0x00000000005F0000-0x0000000000606000-memory.dmp	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
4464	powershell.exe
4372	powershell.exe
4588	powershell.exe
1852	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	Proverka.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft.lnk	Proverka.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft.lnk	Proverka.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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft = "C:\\Users\\Admin\\AppData\\Local\\Microsoft"	Proverka.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
26	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
4288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4464	powershell.exe
4464	powershell.exe
4464	powershell.exe
4372	powershell.exe
4372	powershell.exe
4372	powershell.exe
4588	powershell.exe
4588	powershell.exe
4588	powershell.exe
1852	powershell.exe
1852	powershell.exe
1852	powershell.exe
4336	Proverka.exe
4336	Proverka.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4336	Proverka.exe
Token: SeDebugPrivilege	4464	powershell.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	4588	powershell.exe
Token: SeDebugPrivilege	1852	powershell.exe
Token: SeDebugPrivilege	4336	Proverka.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4336	Proverka.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4336 wrote to memory of 4464	4336	Proverka.exe	100
PID 4336 wrote to memory of 4464	4336	Proverka.exe	100
PID 4336 wrote to memory of 4372	4336	Proverka.exe	103
PID 4336 wrote to memory of 4372	4336	Proverka.exe	103
PID 4336 wrote to memory of 4588	4336	Proverka.exe	105
PID 4336 wrote to memory of 4588	4336	Proverka.exe	105
PID 4336 wrote to memory of 1852	4336	Proverka.exe	107
PID 4336 wrote to memory of 1852	4336	Proverka.exe	107
PID 4336 wrote to memory of 4288	4336	Proverka.exe	110
PID 4336 wrote to memory of 4288	4336	Proverka.exe	110

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\Proverka.exe
"C:\Users\Admin\AppData\Local\Temp\Proverka.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:4336
- 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\Proverka.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4464
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Proverka.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4372
- 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\Microsoft'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4588
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Microsoft'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1852
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Microsoft" /tr "C:\Users\Admin\AppData\Local\Microsoft"
  2⤵
  - Creates scheduled task(s)
  PID:4288

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 --field-trial-handle=3440,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=1280 /prefetch:8
1⤵
PID:3244

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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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 55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
MD5 22310ad6749d8cc38284aa616efcd100
SHA1 440ef4a0a53bfa7c83fe84326a1dff4326dcb515
SHA512 2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def
MD5 SHA1 SHA512

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__PSScriptPolicyTest_u4tnil1o.yue.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u4tnil1o.yue.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4336-0-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

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memory/4336-2-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/4336-1-0x00000000005F0000-0x0000000000606000-memory.dmp

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memory/4336-54-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

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memory/4336-55-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/4464-5-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/4464-15-0x0000022616AC0000-0x0000022616AE2000-memory.dmp

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memory/4464-18-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/4464-4-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/4464-3-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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