xworm | 0e9ed9a55cd440844668e5937cd2afb5a48dd5a17a3530fc4f9868038e305723

Analysis

max time kernel
147s
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
20/06/2024, 12:20

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General

Target
oxyinstaller.exe
Size 67KB
Sample240620-ph79ls1ekr
SHA256 0e9ed9a55cd440844668e5937cd2afb5a48dd5a17a3530fc4f9868038e305723
MD5 2b274de1ba95b66b41fd57ba95e10653
SHA1 ac08368b132f60bf0bd6adfb78153be62883c878
SHA512 fa37fec96549faaf75c775902917aa250f484db72c11d3324cabea37deb609d26c992f7dc26ce5714388784cf688a103c8d33d9e82bb9f0acedc357aa86d5844
SSDEEP 1536:AO6daHktjZytoFTeuDXvq0Zp2yby0BT7BIP5b6xihOuuvZY:da0o1euDXkyby11hOuGZY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:32901
engineering-thoroughly.gl.at.ply.gg:32901

Attributes

Install_directory
%AppData%
install_file
OxyInstaller.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3040-0-0x00000000005F0000-0x0000000000608000-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
5096	powershell.exe
3408	powershell.exe
1436	powershell.exe
2996	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	oxyinstaller.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OxyInstaller.lnk	oxyinstaller.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OxyInstaller.lnk	oxyinstaller.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
2	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 8 IoCs

pid	Process
2996	powershell.exe
2996	powershell.exe
5096	powershell.exe
5096	powershell.exe
3408	powershell.exe
3408	powershell.exe
1436	powershell.exe
1436	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	oxyinstaller.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	5096	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	1436	powershell.exe
Token: SeDebugPrivilege	3040	oxyinstaller.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2996	3040	oxyinstaller.exe	81
PID 3040 wrote to memory of 2996	3040	oxyinstaller.exe	81
PID 3040 wrote to memory of 5096	3040	oxyinstaller.exe	83
PID 3040 wrote to memory of 5096	3040	oxyinstaller.exe	83
PID 3040 wrote to memory of 3408	3040	oxyinstaller.exe	85
PID 3040 wrote to memory of 3408	3040	oxyinstaller.exe	85
PID 3040 wrote to memory of 1436	3040	oxyinstaller.exe	87
PID 3040 wrote to memory of 1436	3040	oxyinstaller.exe	87

C:\Users\Admin\AppData\Local\Temp\oxyinstaller.exe
"C:\Users\Admin\AppData\Local\Temp\oxyinstaller.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- 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\oxyinstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'oxyinstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5096
- 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\OxyInstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'OxyInstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1436

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 385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
MD5 2e907f77659a6601fcc408274894da2e
SHA1 9f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA512 34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721
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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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d
MD5 34f595487e6bfd1d11c7de88ee50356a
SHA1 4caad088c15766cc0fa1f42009260e9a02f953bb
SHA512 10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b
MD5 SHA1 SHA512

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__PSScriptPolicyTest_dc4a0tik.4pk.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dc4a0tik.4pk.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1436-54-0x00000222DF050000-0x00000222DF26C000-memory.dmp

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memory/2996-4-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/2996-11-0x000001C656DA0000-0x000001C656DC2000-memory.dmp

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memory/2996-18-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/2996-5-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/2996-3-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/3040-1-0x00007FF980EF3000-0x00007FF980EF5000-memory.dmp

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memory/3040-2-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/3040-0-0x00000000005F0000-0x0000000000608000-memory.dmp

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memory/3040-59-0x00007FF980EF0000-0x00007FF9819B1000-memory.dmp

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memory/5096-31-0x000001DF35AF0000-0x000001DF35D0C000-memory.dmp

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