xworm | 0e9ed9a55cd440844668e5937cd2afb5a48dd5a17a3530fc4f9868038e305723

Analysis

max time kernel
51s
max time network
54s
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, 15:10

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General

Target
oxyinstaller.exe
Size 67KB
Sample240620-sj14gateqf
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/1048-1-0x0000000000C40000-0x0000000000C58000-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
2164	powershell.exe
4580	powershell.exe
2660	powershell.exe
1268	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-1-5-21-1337824034-2731376981-3755436523-1000\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
3	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
2164	powershell.exe
2164	powershell.exe
4580	powershell.exe
4580	powershell.exe
2660	powershell.exe
2660	powershell.exe
1268	powershell.exe
1268	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	oxyinstaller.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	4580	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	1268	powershell.exe
Token: SeDebugPrivilege	1048	oxyinstaller.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 2164	1048	oxyinstaller.exe	87
PID 1048 wrote to memory of 2164	1048	oxyinstaller.exe	87
PID 1048 wrote to memory of 4580	1048	oxyinstaller.exe	89
PID 1048 wrote to memory of 4580	1048	oxyinstaller.exe	89
PID 1048 wrote to memory of 2660	1048	oxyinstaller.exe	91
PID 1048 wrote to memory of 2660	1048	oxyinstaller.exe	91
PID 1048 wrote to memory of 1268	1048	oxyinstaller.exe	93
PID 1048 wrote to memory of 1268	1048	oxyinstaller.exe	93

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:1048
- 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:2164
- 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:4580
- 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:2660
- 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:1268

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 cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438
MD5 cadef9abd087803c630df65264a6c81c
SHA1 babbf3636c347c8727c35f3eef2ee643dbcc4bd2
SHA512 7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db
MD5 b51dc9e5ec3c97f72b4ca9488bbb4462
SHA1 5c1e8c0b728cd124edcacefb399bbd5e25b21bd3
SHA512 0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 cab7944d29e0501dc0db904ac460ca7a87700e0ec7eb62298b7b97cbf40c424c
MD5 dd1d0b083fedf44b482a028fb70b96e8
SHA1 dc9c027937c9f6d52268a1504cbae42a39c8d36a
SHA512 96bec38bfda176292ae65dcf735103e7888baa212038737c1d1e215fcb76e4c0355e4a827a1934303e7aecae91012fa412f13e38f382b732758bae985cc67973
MD5 SHA1 SHA512

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__PSScriptPolicyTest_y2ts3py5.pkc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y2ts3py5.pkc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1048-1-0x0000000000C40000-0x0000000000C58000-memory.dmp

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memory/1048-2-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/1048-0-0x00007FFE5BD23000-0x00007FFE5BD25000-memory.dmp

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memory/1048-57-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/2164-13-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/2164-14-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/2164-15-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/2164-18-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

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memory/2164-3-0x000001D071390000-0x000001D0713B2000-memory.dmp

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