xworm | 20716ebe59c41a9cd923805dde46298fe40827a10be7652b1de258e556a87833

General

Target

petape.exe
Size

72KB
MD5

ec69a55b3fc572208e55c194442db2bc
SHA1

6cb591b3c96303a95bd42a60456010c60b0400e3
SHA256

20716ebe59c41a9cd923805dde46298fe40827a10be7652b1de258e556a87833
SHA512

e2991444484de2357ba5d0cd5f8c633cc0cf3469976c4f82f1b756cc97e51608c90f47d036b41f5e224636de801d91cdf1bfd07419c41aa69dd0d708b45eb154
SSDEEP

1536:Emh3s0epZ3yRnIe+bWMkJpgw+bv6rsOK8fQnrS4SSdS1EAd8IIF:EVnyRn3+b9igw0CsOPQnz5gEA6IIF

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

la-judgment.gl.at.ply.gg:62627

Attributes

Install_directory
%ProgramData%
install_file
update.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4508-1-0x0000000000840000-0x0000000000858000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
1480	powershell.exe
3240	powershell.exe
3580	powershell.exe
1844	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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	petape.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\update.lnk	petape.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\update.lnk	petape.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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\update = "C:\\ProgramData\\update.exe"	petape.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
1844	powershell.exe
1844	powershell.exe
1480	powershell.exe
1480	powershell.exe
3240	powershell.exe
3240	powershell.exe
3580	powershell.exe
3580	powershell.exe
4508	petape.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	petape.exe
Token: SeDebugPrivilege	1844	powershell.exe
Token: SeDebugPrivilege	1480	powershell.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeDebugPrivilege	4508	petape.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4508	petape.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 1844	4508	petape.exe	91
PID 4508 wrote to memory of 1844	4508	petape.exe	91
PID 4508 wrote to memory of 1480	4508	petape.exe	93
PID 4508 wrote to memory of 1480	4508	petape.exe	93
PID 4508 wrote to memory of 3240	4508	petape.exe	95
PID 4508 wrote to memory of 3240	4508	petape.exe	95
PID 4508 wrote to memory of 3580	4508	petape.exe	97
PID 4508 wrote to memory of 3580	4508	petape.exe	97

C:\Users\Admin\AppData\Local\Temp\petape.exe
"C:\Users\Admin\AppData\Local\Temp\petape.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:4508
- 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\petape.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1844
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'petape.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 -ExclusionPath 'C:\ProgramData\update.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 'update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
a9451a6b9669d49bd90704dff21beb85

SHA1
5f93d2dec01a31e04fc90c28eb1c5ca62c6fff80

SHA256
b2ff191507379930b97a212f869c3774c20b274e8fc9fcc96da5c154fb0e3056

SHA512
06634cb578f6ce8d721e6306004082073fc224b91ceea37ef870df87b12b2d5f59e7d08b20b520787a1d13f3edbbb004197bf70f180f86dd7f401a5ad289ccb5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cpi15g4k.x3i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1844-11-0x000001C1E2CD0000-0x000001C1E2CF2000-memory.dmp

Filesize
136KB

Download
memory/1844-14-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download
memory/1844-17-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download
memory/1844-13-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download
memory/1844-12-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download
memory/4508-0-0x00007FFE46933000-0x00007FFE46935000-memory.dmp

Filesize
8KB

Download
memory/4508-1-0x0000000000840000-0x0000000000858000-memory.dmp

Filesize
96KB

Download
memory/4508-56-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download
memory/4508-57-0x00007FFE46933000-0x00007FFE46935000-memory.dmp

Filesize
8KB

Download
memory/4508-58-0x00007FFE46930000-0x00007FFE473F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads