xworm | 9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad

Analysis

max time kernel
133s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 01:29

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General

Target
9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe
Size 68KB
Sample240603-bweybsed4z
SHA256 9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad
MD5 26917e701dfa9ab7e1a3a3454cd4c848
SHA1 edc9d2a9ef19310d4798f3dd38e86959a4b9b314
SHA512 cc945a4cee9cc7769d75d2a9b32410cfb430aa98c5e16537c7c7c3000c43df735c6b5151c54d1b9bd4fbcc58d595c545cd6cce6ce4c287854d0df2318a71c2aa
SSDEEP 1536:/phlXi7u7dPfJLALNG6GzwK6KUR+bz+eTWVOHIl6jMK3nGOUxBlY:/pe7u7ZG4bUR+bz+eScHIkfnGOU5Y
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:8848
modern-during.gl.at.ply.gg:8848

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/220-0-0x0000000000670000-0x0000000000688000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/memory/220-0-0x0000000000670000-0x0000000000688000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
3156	powershell.exe
1724	powershell.exe
4416	powershell.exe
4976	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	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.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\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe

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
4976	powershell.exe
4976	powershell.exe
3156	powershell.exe
3156	powershell.exe
1724	powershell.exe
1724	powershell.exe
4416	powershell.exe
4416	powershell.exe
220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	1724	powershell.exe
Token: SeDebugPrivilege	4416	powershell.exe
Token: SeDebugPrivilege	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 4976	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	89
PID 220 wrote to memory of 4976	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	89
PID 220 wrote to memory of 3156	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	93
PID 220 wrote to memory of 3156	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	93
PID 220 wrote to memory of 1724	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	95
PID 220 wrote to memory of 1724	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	95
PID 220 wrote to memory of 4416	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	97
PID 220 wrote to memory of 4416	220	9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe	97

C:\Users\Admin\AppData\Local\Temp\9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe
"C:\Users\Admin\AppData\Local\Temp\9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.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:220
- 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\9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '9c328d44e2cfbde65d3da9d7ba351d6f0ccb58423ca6b72ad0e37e4b8b4b92ad.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3156
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1724
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93
MD5 e58749a7a1826f6ea62df1e2ef63a32b
SHA1 c0bca21658b8be4f37b71eec9578bfefa44f862d
SHA512 4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 1fed2c9bc05b3fcb93f493124dbf1680c6445f67e3d49680257183132514509c
MD5 085e0a3b869f290afea5688a8ac4e7c5
SHA1 0fedef5057708908bcca9e7572be8f46cef4f3ca
SHA512 bbac0555a05dbe83154a90caa44a653c8a05c87594a211548b165c5b1d231e3818830e754c0b6de3e5cb64dba3a5ad18bebae05cb9157e1dd46bce2a86d18ede
MD5 SHA1 SHA512

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__PSScriptPolicyTest_z1z4ldpk.eoz.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z1z4ldpk.eoz.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/220-1-0x00007FFE83653000-0x00007FFE83655000-memory.dmp

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memory/220-0-0x0000000000670000-0x0000000000688000-memory.dmp

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memory/220-58-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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memory/220-57-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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memory/4976-11-0x00000233F1F60000-0x00000233F1F82000-memory.dmp

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memory/4976-18-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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memory/4976-17-0x00000233F20A0000-0x00000233F22BC000-memory.dmp

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memory/4976-14-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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memory/4976-13-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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memory/4976-12-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

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