xworm | 8e78103cc23b15f941e8a2eee84de4ea7a37bcb33a894396e62291bbc9bcc5ac

Analysis

max time kernel
94s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 11:29

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General

Target
amph_64.exe
Size 69KB
Sample240601-nlp2rsbb5y
SHA256 8e78103cc23b15f941e8a2eee84de4ea7a37bcb33a894396e62291bbc9bcc5ac
MD5 02c6422cfbb7ddc7cf39f5754c6bdd4d
SHA1 0860f4fab529dea7165b1f42177d03ebc68d99c8
SHA512 bab1141231427e9f4b8fdce4d396886bc499d9b5beeaee2530b5e0be753fdee7899a26a11b8fe77ee24642957dd5a48795a18ff304ce815b0a1f2c93c14281fd
SSDEEP 1536:bTFDY91Kiiaz2ai5p6hKNLbqVeBKf65dOYXBFG9:b1G1HTSaup6hubqgKYOYXfG9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

provides-reduces.gl.at.ply.gg:6197

Attributes

Install_directory
%AppData%
install_file
Antimalware Service Executable.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/756-0-0x0000000000880000-0x0000000000898000-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
4848	powershell.exe
4256	powershell.exe
2176	powershell.exe
2020	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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	amph_64.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Antimalware Service Executable.lnk	amph_64.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Antimalware Service Executable.lnk	amph_64.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
12	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 9 IoCs

pid	Process
4848	powershell.exe
4848	powershell.exe
4256	powershell.exe
4256	powershell.exe
2176	powershell.exe
2176	powershell.exe
2020	powershell.exe
2020	powershell.exe
756	amph_64.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	756	amph_64.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	4256	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	756	amph_64.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
756	amph_64.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 4848	756	amph_64.exe	87
PID 756 wrote to memory of 4848	756	amph_64.exe	87
PID 756 wrote to memory of 4256	756	amph_64.exe	90
PID 756 wrote to memory of 4256	756	amph_64.exe	90
PID 756 wrote to memory of 2176	756	amph_64.exe	92
PID 756 wrote to memory of 2176	756	amph_64.exe	92
PID 756 wrote to memory of 2020	756	amph_64.exe	94
PID 756 wrote to memory of 2020	756	amph_64.exe	94

C:\Users\Admin\AppData\Local\Temp\amph_64.exe
"C:\Users\Admin\AppData\Local\Temp\amph_64.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:756
- 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\amph_64.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'amph_64.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4256
- 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\Antimalware Service Executable.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2176
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Antimalware Service Executable.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2020

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 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 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 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
MD5 SHA1 SHA512

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__PSScriptPolicyTest_tpvelizv.cvt.ps1

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

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memory/756-0-0x0000000000880000-0x0000000000898000-memory.dmp

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memory/756-2-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/756-1-0x00007FFB352F3000-0x00007FFB352F5000-memory.dmp

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memory/756-58-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/756-57-0x00007FFB352F3000-0x00007FFB352F5000-memory.dmp

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memory/4848-3-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/4848-18-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/4848-15-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/4848-10-0x00007FFB352F0000-0x00007FFB35DB1000-memory.dmp

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memory/4848-9-0x000002397F200000-0x000002397F222000-memory.dmp

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