xworm | 0e9ed9a55cd440844668e5937cd2afb5a48dd5a17a3530fc4f9868038e305723

Analysis

max time kernel
138s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 12:17

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General

Target
oxyinstaller.exe
Size 67KB
Sample240620-pf4hmswhrf
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/4176-0-0x0000000000600000-0x0000000000618000-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
4352	powershell.exe
968	powershell.exe
1556	powershell.exe
2856	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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	oxyinstaller.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OxyInstaller.lnk	oxyinstaller.exe
File created	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
25	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
4352	powershell.exe
4352	powershell.exe
968	powershell.exe
968	powershell.exe
1556	powershell.exe
1556	powershell.exe
2856	powershell.exe
2856	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4176	oxyinstaller.exe
Token: SeDebugPrivilege	4352	powershell.exe
Token: SeDebugPrivilege	968	powershell.exe
Token: SeDebugPrivilege	1556	powershell.exe
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	4176	oxyinstaller.exe
Token: 33	3988	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3988	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4176	oxyinstaller.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 4352	4176	oxyinstaller.exe	90
PID 4176 wrote to memory of 4352	4176	oxyinstaller.exe	90
PID 4176 wrote to memory of 968	4176	oxyinstaller.exe	92
PID 4176 wrote to memory of 968	4176	oxyinstaller.exe	92
PID 4176 wrote to memory of 1556	4176	oxyinstaller.exe	94
PID 4176 wrote to memory of 1556	4176	oxyinstaller.exe	94
PID 4176 wrote to memory of 2856	4176	oxyinstaller.exe	96
PID 4176 wrote to memory of 2856	4176	oxyinstaller.exe	96

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 FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4176
- 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:4352
- 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:968
- 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:1556
- 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:2856

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x30c 0x318
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3988

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 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294
MD5 96e3b86880fedd5afc001d108732a3e5
SHA1 8fc17b39d744a9590a6d5897012da5e6757439a3
SHA512 909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 77f69011c214ea5a01fd2035d781914c4893aee66d784deadc22179eadfdf77f
MD5 110b59ca4d00786d0bde151d21865049
SHA1 557e730d93fdf944a0cad874022df1895fb5b2e2
SHA512 cb55ac6eca50f4427718bace861679c88b2fdfea94d30209e8d61ca73a6ce9f8c4b5334922d2660a829b0636d20cbdf3bae1497c920e604efe6c636019feb10e
MD5 SHA1 SHA512

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__PSScriptPolicyTest_xd3wfj4n.z5a.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xd3wfj4n.z5a.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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SP_F2717F035E4B4DEDB9AC73678522EB9D.dat

Path C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_F2717F035E4B4DEDB9AC73678522EB9D.dat
Size 940B
SHA256 53cc022a370e3ffe1dc91fe922ac33f30c5ff4e763f3c2a5c3db6cc5ada9fb37
MD5 513148890042ad8663018642aeb085a4
SHA1 a1def6bfb66672a0bb9dd4d747f2d3a6a0f8eace
SHA512 1d4113943eff589b3447bc7ee078920772eedc1616224f5957fc8a932b64bfe2686455ee422e329c0f6d8a20c74c09db9f44e7bbc45bd853f823caba779379aa
MD5 SHA1 SHA512

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memory/4176-1-0x00007FFD407B3000-0x00007FFD407B5000-memory.dmp

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memory/4176-2-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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memory/4176-0-0x0000000000600000-0x0000000000618000-memory.dmp

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memory/4176-60-0x0000000000DD0000-0x0000000000DDA000-memory.dmp

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memory/4176-59-0x0000000000D50000-0x0000000000D5A000-memory.dmp

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memory/4176-57-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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memory/4352-9-0x000002A9B6CC0000-0x000002A9B6CE2000-memory.dmp

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memory/4352-18-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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memory/4352-15-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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memory/4352-11-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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memory/4352-3-0x00007FFD407B0000-0x00007FFD41271000-memory.dmp

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