xworm | 347ca1208f90a9d5b07324cc923d4279885856d3f446468a95c018e6cba7786c

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 11:35

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General

Target
cd468e7b3b53ddb2ce6b9c43e9207185.exe
Size 50KB
Sample240604-npz15sfc63
SHA256 347ca1208f90a9d5b07324cc923d4279885856d3f446468a95c018e6cba7786c
MD5 cd468e7b3b53ddb2ce6b9c43e9207185
SHA1 47d2d750030f8ee8e8f10af5ae20772cd6f088ea
SHA512 4756563ae050529d26c1ace186de325c6eff2c2d5fd336aba0c721025becaf3dc5c7a2c4b3981f66f57fe858a95d282d48e0b91e09d1f06283f6281295b7e366
SSDEEP 1536:if05a/CTjK89SFc9U/dW68OMYpdS1EAd8II4:if05a/CTR9SFc9U/eOMYgEA6II4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

89.213.177.171:7000

Mutex

hqK5nhK7bEoltZzv

Attributes

Install_directory
%ProgramData%
install_file
VLC_Medai.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5064-1-0x0000000000080000-0x0000000000092000-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
1108	powershell.exe
2108	powershell.exe
1480	powershell.exe
3200	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	cd468e7b3b53ddb2ce6b9c43e9207185.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_Medai.lnk	cd468e7b3b53ddb2ce6b9c43e9207185.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_Medai.lnk	cd468e7b3b53ddb2ce6b9c43e9207185.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
7	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1108	powershell.exe
1108	powershell.exe
2108	powershell.exe
2108	powershell.exe
1480	powershell.exe
1480	powershell.exe
3200	powershell.exe
3200	powershell.exe
5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	1480	powershell.exe
Token: SeDebugPrivilege	3200	powershell.exe
Token: SeDebugPrivilege	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 1108	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	92
PID 5064 wrote to memory of 1108	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	92
PID 5064 wrote to memory of 2108	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	94
PID 5064 wrote to memory of 2108	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	94
PID 5064 wrote to memory of 1480	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	96
PID 5064 wrote to memory of 1480	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	96
PID 5064 wrote to memory of 3200	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	98
PID 5064 wrote to memory of 3200	5064	cd468e7b3b53ddb2ce6b9c43e9207185.exe	98

C:\Users\Admin\AppData\Local\Temp\cd468e7b3b53ddb2ce6b9c43e9207185.exe
"C:\Users\Admin\AppData\Local\Temp\cd468e7b3b53ddb2ce6b9c43e9207185.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5064
- 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\cd468e7b3b53ddb2ce6b9c43e9207185.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1108
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'cd468e7b3b53ddb2ce6b9c43e9207185.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2108
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\VLC_Medai.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1480
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VLC_Medai.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3200

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=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:2556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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 2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6
MD5 bd5940f08d0be56e65e5f2aaf47c538e
SHA1 d7e31b87866e5e383ab5499da64aba50f03e8443
SHA512 c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2987e99ec7fa17bd4ab7de3cb4dc62645e1052012a5a357904d6fc6db9054147
MD5 50d3033f2bc3a3774c469d03e71a79a9
SHA1 22027b1d52085de99b3bffa276530fea5d961471
SHA512 ecf7ab1a9e4192454a3e24c60453fd702a8c648e00078fc933b9182f4a3d3c10c6f5da622a5729b35727e6ddc8837029caddcaf76f56e805b9744253b56da5d8
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 517807921c55bd16cd8a8bfae3d5dc19444c66f836b66acd5593e3080acbaf8e
MD5 9a2c763c5ff40e18e49ad63c7c3b0088
SHA1 4b289ea34755323fa869da6ad6480d8d12385a36
SHA512 3af01926bc7de92076067d158d7250b206d396b3282ee0db43639d04d91bd9ff763acbce12c7822914824984a3c5fdd1b8dbf1ad2ee88233d47f0f808b746bc8
MD5 SHA1 SHA512

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__PSScriptPolicyTest_gkcq2p0l.usc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gkcq2p0l.usc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1108-15-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-3-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-5-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-16-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-17-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-20-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/1108-4-0x0000021B75DF0000-0x0000021B75E12000-memory.dmp

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memory/5064-60-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/5064-66-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-1-0x0000000000080000-0x0000000000092000-memory.dmp

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memory/5064-59-0x00007FFCA3103000-0x00007FFCA3105000-memory.dmp

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memory/5064-0-0x00007FFCA3103000-0x00007FFCA3105000-memory.dmp

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memory/5064-61-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-62-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-63-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-65-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-2-0x00007FFCA3100000-0x00007FFCA3BC1000-memory.dmp

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memory/5064-67-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-68-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-69-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-70-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-71-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-72-0x000000001C520000-0x000000001C6C9000-memory.dmp

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memory/5064-73-0x000000001C520000-0x000000001C6C9000-memory.dmp

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