xworm | 0f44a16c579d14e3602df142b73fd82682c4d2083c05a4f7f250ed32f2e963a4

Analysis

max time kernel
143s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
04/06/2024, 16:12

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General

Target
test 52.exe
Size 232KB
Sample240604-tnvb6ada84
SHA256 0f44a16c579d14e3602df142b73fd82682c4d2083c05a4f7f250ed32f2e963a4
MD5 bb5ee885b66e05a8964ea7e469b3fc88
SHA1 1672450125649edd09b9c4ffcab89d609953dca4
SHA512 151580e73780acae6df1573f8ccda8eb745107a95fd5197aaaffcafe855830158fba546fd42cf958d735837de45479c21dd6582ed7af7c6c085c98d9b2cb7aee
SSDEEP 6144:BBLf8jbggbjCswAIhUhcX7elbKTua9bfF/H9d9n:BB/Ush3X3u+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:80

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/996-1-0x0000000000840000-0x0000000000880000-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
2632	powershell.exe
4516	powershell.exe
2304	powershell.exe
3532	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	test 52.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	test 52.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
1	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
2632	powershell.exe
2632	powershell.exe
4516	powershell.exe
4516	powershell.exe
2304	powershell.exe
2304	powershell.exe
3532	powershell.exe
3532	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	996	test 52.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	4516	powershell.exe
Token: SeDebugPrivilege	2304	powershell.exe
Token: SeDebugPrivilege	3532	powershell.exe
Token: SeDebugPrivilege	996	test 52.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 2632	996	test 52.exe	78
PID 996 wrote to memory of 2632	996	test 52.exe	78
PID 996 wrote to memory of 4516	996	test 52.exe	80
PID 996 wrote to memory of 4516	996	test 52.exe	80
PID 996 wrote to memory of 2304	996	test 52.exe	82
PID 996 wrote to memory of 2304	996	test 52.exe	82
PID 996 wrote to memory of 3532	996	test 52.exe	84
PID 996 wrote to memory of 3532	996	test 52.exe	84

C:\Users\Admin\AppData\Local\Temp\test 52.exe
"C:\Users\Admin\AppData\Local\Temp\test 52.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:996
- 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\test 52.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'test 52.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4516
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2304
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3532

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
MD5 627073ee3ca9676911bee35548eff2b8
SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888
MD5 1a9fa92a4f2e2ec9e244d43a6a4f8fb9
SHA1 9910190edfaccece1dfcc1d92e357772f5dae8f7
SHA512 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d
MD5 80b42fe4c6cf64624e6c31e5d7f2d3b3
SHA1 1f93e7dd83b86cb900810b7e3e43797868bf7d93
SHA512 83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e
MD5 050567a067ffea4eb40fe2eefebdc1ee
SHA1 6e1fb2c7a7976e0724c532449e97722787a00fec
SHA512 341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259
MD5 SHA1 SHA512

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__PSScriptPolicyTest_jdet0yv3.jdu.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdet0yv3.jdu.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/996-1-0x0000000000840000-0x0000000000880000-memory.dmp

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memory/996-2-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/996-55-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/996-0-0x00007FFB5E913000-0x00007FFB5E915000-memory.dmp

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memory/2632-12-0x000002146A120000-0x000002146A142000-memory.dmp

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memory/2632-19-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/2632-16-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/2632-15-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/2632-14-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/2632-13-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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memory/2632-3-0x00007FFB5E910000-0x00007FFB5F3D2000-memory.dmp

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