xworm | 5036fecd00ecb6ef5042ee327150d4ca19c696e6318474bdd912431338870d6f

General

Target

Xworm-V5.6/Xworm V5.6 Starter.exe
Size

7.7MB
MD5

bbf43a166ade7e2a0d2b930c41fb20a3
SHA1

d956dd742690aa25a59a84104cd3adbc40fcba78
SHA256

e948b08eb91c2dca67517126d71e5175e222598e6f1928d3ee78560b08e40b2b
SHA512

fcad5fc89da1d823a929cfebcdd19869605d646696f2399b2a84caa78e5a9854622e9d6b4184aba4ae080650513e1db01eb2412d995f87f18c4da90293fe523b
SSDEEP

196608:zKLCFU/jHq/puROyhxeyOC7+oiRkbtejBe5x:zmq/pkOYxehohbtB

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

manufacturer-rank.gl.at.ply.gg:60383

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Xworm.exe	family_xworm
behavioral2/memory/1460-14-0x0000000000790000-0x00000000007A8000-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

448 powershell.exe
2756 powershell.exe
1300 powershell.exe
1512 powershell.exe

pid	process
448	powershell.exe
2756	powershell.exe
1300	powershell.exe
1512	powershell.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Xworm V5.6 Starter.exeXworm.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Xworm V5.6 Starter.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Xworm.exe

Drops startup file 2 IoCs

Processes:

Xworm.exe

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

Executes dropped EXE 4 IoCs

Processes:

Xworm.exeXworm V5.6.exeSystem UserSystem User

pid process

1460 Xworm.exe
4768 Xworm V5.6.exe
2412 System User
1776 System User

pid	process
1460	Xworm.exe
4768	Xworm V5.6.exe
2412	System User
1776	System User

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Xworm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System User = "C:\\Users\\Admin\\AppData\\Roaming\\System User"	Xworm.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

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

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

3100 schtasks.exe

flow	ioc
14	ip-api.com

pid	process
3100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXworm.exe

pid	process
1300	powershell.exe
1300	powershell.exe
1512	powershell.exe
1512	powershell.exe
448	powershell.exe
448	powershell.exe
2756	powershell.exe
2756	powershell.exe
1460	Xworm.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

Xworm.exepowershell.exepowershell.exepowershell.exepowershell.exeSystem UserSystem User

description	pid	process
Token: SeDebugPrivilege	1460	Xworm.exe
Token: SeDebugPrivilege	1300	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeDebugPrivilege	448	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	1460	Xworm.exe
Token: SeDebugPrivilege	2412	System User
Token: SeDebugPrivilege	1776	System User

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Xworm.exe

pid process

1460 Xworm.exe

pid	process
1460	Xworm.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Xworm V5.6 Starter.exeXworm.exe

description	pid	process	target process
PID 4724 wrote to memory of 1460	4724	Xworm V5.6 Starter.exe	Xworm.exe
PID 4724 wrote to memory of 1460	4724	Xworm V5.6 Starter.exe	Xworm.exe
PID 4724 wrote to memory of 4768	4724	Xworm V5.6 Starter.exe	Xworm V5.6.exe
PID 4724 wrote to memory of 4768	4724	Xworm V5.6 Starter.exe	Xworm V5.6.exe
PID 1460 wrote to memory of 1300	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 1300	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 1512	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 1512	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 448	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 448	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 2756	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 2756	1460	Xworm.exe	powershell.exe
PID 1460 wrote to memory of 3100	1460	Xworm.exe	schtasks.exe
PID 1460 wrote to memory of 3100	1460	Xworm.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Xworm-V5.6\Xworm V5.6 Starter.exe
"C:\Users\Admin\AppData\Local\Temp\Xworm-V5.6\Xworm V5.6 Starter.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Users\Admin\AppData\Local\Temp\Xworm.exe
  "C:\Users\Admin\AppData\Local\Temp\Xworm.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1460
- - 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\Xworm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1300
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xworm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1512
- - 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\System User'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:448
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System User'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2756
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\AppData\Roaming\System User"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3100
- C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
  "C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe"
  2⤵
  - Executes dropped EXE
  PID:4768

C:\Users\Admin\AppData\Roaming\System User
"C:\Users\Admin\AppData\Roaming\System User"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2412

C:\Users\Admin\AppData\Roaming\System User
"C:\Users\Admin\AppData\Roaming\System User"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

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\System User.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
731e9e4becec0b1ef9caad4b3562d4b4

SHA1
6dffb77aba4e92ad5bd4b7c02fdee6f328bcd457

SHA256
71c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5

SHA512
841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5

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

Filesize
944B

MD5
10fb30dc297f99d6ebafa5fee8b24fa2

SHA1
76904509313a49a765edcde26b69c3a61f9fa225

SHA256
567bcacac120711fc04bf8e6c8cd0bff7b61e8ee0a6316254d1005ebb1264e6a

SHA512
c42ace1ea0923fa55592f4f486a508ea56997fdbe0200016b0fc16a33452fc28e4530129a315b3b3a5ede37a07097c13a0eb310c9e91e5d97bb7ce7b955b9498

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe

Filesize
14.9MB

MD5
56ccb739926a725e78a7acf9af52c4bb

SHA1
5b01b90137871c3c8f0d04f510c4d56b23932cbc

SHA256
90f58865f265722ab007abb25074b3fc4916e927402552c6be17ef9afac96405

SHA512
2fee662bc4a1a36ce7328b23f991fa4a383b628839e403d6eb6a9533084b17699a6c939509867a86e803aafef2f9def98fa9305b576dad754aa7f599920c19a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Xworm.exe

Filesize
76KB

MD5
2440671e67fb9e5087758e8c496d2c3a

SHA1
eac0d14a9866208ac6920a7a906eef761b3e0c2a

SHA256
e6c4447bc9d07a89b142f89e5011b2fa37eb77a243c9537ef992a1786a6044a3

SHA512
6bc35fd57775a3794b49c1e8576ba2e3b05f47a893b604bffeaf38cc01429dcccd5011c29dc80c88cf1fdaa9dd15c6cf168b885d532821939c68a603d7b64d82

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_krcrbsrp.hk1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1300-41-0x0000015178040000-0x0000015178062000-memory.dmp

Filesize
136KB

Download
memory/1460-15-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/1460-31-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/1460-14-0x0000000000790000-0x00000000007A8000-memory.dmp

Filesize
96KB

Download
memory/1460-82-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/1460-83-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/4724-28-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/4724-0-0x00007FF9FB3D3000-0x00007FF9FB3D5000-memory.dmp

Filesize
8KB

Download
memory/4724-10-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/4724-1-0x0000000000320000-0x0000000000AD2000-memory.dmp

Filesize
7.7MB

Download
memory/4768-30-0x00000220F67C0000-0x00000220F76A8000-memory.dmp

Filesize
14.9MB

Download
memory/4768-29-0x00007FF9FB3D0000-0x00007FF9FBE91000-memory.dmp

Filesize
10.8MB

Download
memory/4768-81-0x00007FF9FB3D0000-0x00007FF9FBE91000-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