xworm | 774529f26b02e6ac05bafff286f930882b7c8f10b73222b040f7d47430d2a888

General

Target

x.exe
Size

50KB
MD5

20e2bdf68c3b6acfda5735422b64cbea
SHA1

181aa68712a5e2f06f136e065291f083c35f32dc
SHA256

774529f26b02e6ac05bafff286f930882b7c8f10b73222b040f7d47430d2a888
SHA512

188c77234438a34673cc2b2164c180ff0b3d9f35ff2b17c704b36acb655d47a2a034632a59a3ed4945daae692316774c8a6fd53e80ffc53217c8045f7bc88b36
SSDEEP

1536:Tf05a/CTjo89wFc9UR68OMuodS1EAd8IIm:Tf05a/CTD9wFc9U3OMhgEA6IIm

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

103.216.158.119:7000

Mutex

gjV5QKceVphN17zl

Attributes

Install_directory
%ProgramData%
install_file
VLC_media.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3076-1-0x00000000005E0000-0x00000000005F2000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2676 powershell.exe
968 powershell.exe
4540 powershell.exe
4164 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

Processes:

x.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation x.exe

pid	process
2676	powershell.exe
968	powershell.exe
4540	powershell.exe
4164	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	x.exe

Drops startup file 2 IoCs

Processes:

x.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_media.lnk	x.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_media.lnk	x.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.

Processes:

flow ioc

15 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
15	ip-api.com

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exex.exe

pid	process
4540	powershell.exe
4540	powershell.exe
4164	powershell.exe
4164	powershell.exe
2676	powershell.exe
2676	powershell.exe
968	powershell.exe
968	powershell.exe
3076	x.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

x.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3076	x.exe
Token: SeDebugPrivilege	4540	powershell.exe
Token: SeDebugPrivilege	4164	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	968	powershell.exe
Token: SeDebugPrivilege	3076	x.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

x.exe

pid process

3076 x.exe

pid	process
3076	x.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

x.exe

description	pid	process	target process
PID 3076 wrote to memory of 4540	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 4540	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 4164	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 4164	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 2676	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 2676	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 968	3076	x.exe	powershell.exe
PID 3076 wrote to memory of 968	3076	x.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\x.exe
"C:\Users\Admin\AppData\Local\Temp\x.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:3076
- 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\x.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'x.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4164
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\VLC_media.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VLC_media.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
531f08ac3a06c5a3a09412a10fd95626

SHA1
ad756b5c27e710d81ece8a6d4fe865230cdc2bbf

SHA256
793902b936877a86b5d46d629a1c6d8c68ac8d42981788ddd4ede0f3381af6b0

SHA512
ac8c608fae29fa780400ac84e79b86c4a34ee7068f4f2c8056e4a2209a3ba62ae7716eaea2924e8412eab38ad003d59d4538d675019e50f15b3571e14c52fa73

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d3e8199b4634731cf0a0c26c1f14f588

SHA1
7f8fae27eb80055a436a6b5457978f32673d9ad4

SHA256
ef33f487f93c2977e92fb08d6bdcc9d48b5d1864c402f9d3fbf3e1b30e8b3b9a

SHA512
806a123100dbc1ca1b27bbad5b93c3a9a840dc795127af8523333a71259a8c5ef8aefccb83ef390f2644e013f138c4b7b63c584acccb197aada0c70c038032e2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
0256bd284691ed0fc502ef3c8a7e58dc

SHA1
dcdf69dc8ca8bf068f65d20ef1563bbe283e2413

SHA256
e2fb83098e114084f51ed7187334f861ce670051046c39f338928296ca9a49cf

SHA512
c5b29c1e0a15ddb68b0579848066774fa7cdc6f35087bbbf47c05a5c0dcc1eb3e61b2ddadfbded8c1ed9820e637596a9f08a97db8fb18000d168e6b159060c42

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_idl3vuw2.eb4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3076-0-0x00007FFE91E53000-0x00007FFE91E55000-memory.dmp

Filesize
8KB

Download
memory/3076-2-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/3076-1-0x00000000005E0000-0x00000000005F2000-memory.dmp

Filesize
72KB

Download
memory/3076-57-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4540-5-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4540-8-0x00000235D6600000-0x00000235D6622000-memory.dmp

Filesize
136KB

Download
memory/4540-18-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4540-4-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4540-3-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads