xworm | 56fa8c7c13912a3ca29df19e784d26482ba8a73c444962455ed75162222826af

General

Target

loader1.exe
Size

5.0MB
MD5

70d285d40e06d6b57e9a82e96d17df18
SHA1

261f7f15d1fb16d2493e784d88a98caa3357c286
SHA256

56fa8c7c13912a3ca29df19e784d26482ba8a73c444962455ed75162222826af
SHA512

f2dbf618190dfa5f632c840b3a78bc8f6e61ea01473bea799698f11bcae7a8c90d4b6ee7629e031a9b42b7a024b513e058e8905affc1b69c4c176e747acecbb6
SSDEEP

768:rRrA2/ZIPfLbN5VAuP4GSjTYWeLBdhJ6Ws25l1Ul3nEc/sZc795+hT:VM2/GPfLLKHGSg/B3s250l3Ecf95q

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

cool-autos.gl.at.ply.gg:23445

Attributes

Install_directory
%Temp%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000016479-21.dat	family_xworm
behavioral2/memory/4484-29-0x00000000003A0000-0x00000000003B6000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2016	powershell.exe
2592	powershell.exe
5044	powershell.exe
4476	powershell.exe
396	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	svhost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	loader1.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4484	svhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svhost.exe"	svhost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5044	powershell.exe
5044	powershell.exe
4476	powershell.exe
4476	powershell.exe
396	powershell.exe
396	powershell.exe
2016	powershell.exe
2016	powershell.exe
2592	powershell.exe
2592	powershell.exe
4484	svhost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	5044	powershell.exe
Token: SeDebugPrivilege	4484	svhost.exe
Token: SeDebugPrivilege	4476	powershell.exe
Token: SeDebugPrivilege	396	powershell.exe
Token: SeDebugPrivilege	2016	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	4484	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4484	svhost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 5044	556	loader1.exe	89
PID 556 wrote to memory of 5044	556	loader1.exe	89
PID 556 wrote to memory of 4484	556	loader1.exe	91
PID 556 wrote to memory of 4484	556	loader1.exe	91
PID 4484 wrote to memory of 4476	4484	svhost.exe	96
PID 4484 wrote to memory of 4476	4484	svhost.exe	96
PID 4484 wrote to memory of 396	4484	svhost.exe	98
PID 4484 wrote to memory of 396	4484	svhost.exe	98
PID 4484 wrote to memory of 2016	4484	svhost.exe	100
PID 4484 wrote to memory of 2016	4484	svhost.exe	100
PID 4484 wrote to memory of 2592	4484	svhost.exe	103
PID 4484 wrote to memory of 2592	4484	svhost.exe	103

C:\Users\Admin\AppData\Local\Temp\loader1.exe
"C:\Users\Admin\AppData\Local\Temp\loader1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:556
- 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\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5044
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.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:4484
- - 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\svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4476
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:396
- - 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\svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2016
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
96e3b86880fedd5afc001d108732a3e5

SHA1
8fc17b39d744a9590a6d5897012da5e6757439a3

SHA256
c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294

SHA512
909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d

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

Filesize
944B

MD5
6d14ccefeb263594e60b1765e131f7a3

SHA1
4a9ebdc0dff58645406c40b7b140e1b174756721

SHA256
57cd435c8b2bf10a2c77698301789c032e1b6b623ff1420c72e8bca0b10f1e5c

SHA512
2013a26123f72a4106524fd9d7389ac4654f97033d22707efc084fb2a3ad01c298eb64f01bb64861ab603615022dbe7cfc97475346edb16b3ba72e905127f101

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

Filesize
944B

MD5
c08aea9c78561a5f00398a723fdf2925

SHA1
2c880cbb5d02169a86bb9517ce2a0184cb177c6e

SHA256
63d2688b92da4d1bb69980b7998b9be1595dd9e53951434a9414d019c4f825a7

SHA512
d30db2f55bbda7102ffe90520d233355633313dcc77cdb69a26fdbb56e59dd41793def23d69dc5dc3f94c5bd41d3c26b3628886fd2edbed2df0b332e9a21f95c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g2zgx1lx.fa5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
66KB

MD5
3cb29aeecd325a39890ff5635be75968

SHA1
c1d5b2c578cf785b30c610c0564a965f0d551f00

SHA256
38780872646fb91310f7f664ac7a92f4afdd84f6bb6118d7b275ed326b1872a9

SHA512
8048bdcf4617aac23716414a1dac11c34382eee964c631f92c4245504f0589ee53a9e089fc0f2e08c35d0981cf985e15ab143a9906fb68a582a972cb7c8dafc4

Download Submit
memory/556-28-0x00007FF92E7E0000-0x00007FF92F2A1000-memory.dmp

Filesize
10.8MB

Download
memory/556-0-0x00007FF92E7E3000-0x00007FF92E7E5000-memory.dmp

Filesize
8KB

Download
memory/556-52-0x00007FF92E7E3000-0x00007FF92E7E5000-memory.dmp

Filesize
8KB

Download
memory/556-55-0x00007FF92E7E0000-0x00007FF92F2A1000-memory.dmp

Filesize
10.8MB

Download
memory/556-1-0x0000000000150000-0x0000000000162000-memory.dmp

Filesize
72KB

Download
memory/4484-29-0x00000000003A0000-0x00000000003B6000-memory.dmp

Filesize
88KB

Download
memory/5044-16-0x00007FF92E7E0000-0x00007FF92F2A1000-memory.dmp

Filesize
10.8MB

Download
memory/5044-13-0x00007FF92E7E0000-0x00007FF92F2A1000-memory.dmp

Filesize
10.8MB

Download
memory/5044-12-0x00007FF92E7E0000-0x00007FF92F2A1000-memory.dmp

Filesize
10.8MB

Download
memory/5044-11-0x000001A1E6EB0000-0x000001A1E6ED2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads