xworm | 84ed4eecc481a190525ff964da9b2e17eb46b5cd6c45d2c602c5216099e91675

General

Target

SantosExecutorInstaller.exe
Size

161KB
MD5

d8a8dc5751ec1e003029b24096414d84
SHA1

e5d475f57565aca29bf2111bb123434b66093d8d
SHA256

84ed4eecc481a190525ff964da9b2e17eb46b5cd6c45d2c602c5216099e91675
SHA512

02ae89407380a0adffb05a256e65c3330d4b67463835f43bf036a06398e6a0bcf9afc0724769862209e854fbe7d4c067563c2b26a970214341162b4ed489f41f
SSDEEP

3072:eZJHbIqVRWOnhzBz65/M6If+3Js+3JFkKeTnE:SJHbBxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

introduction-specifications.gl.at.ply.gg:47117

Attributes

Install_directory
%Userprofile%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7098399942:AAGbBTQcHRRS0fdzPhkmgHxFxRybEnM_OnM

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2156-1-0x00000000012D0000-0x00000000012FE000-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
2680	powershell.exe
2900	powershell.exe
2548	powershell.exe
2480	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	SantosExecutorInstaller.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	SantosExecutorInstaller.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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\svchost.exe"	SantosExecutorInstaller.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
4	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 4 IoCs

pid	Process
2480	powershell.exe
2680	powershell.exe
2900	powershell.exe
2548	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	SantosExecutorInstaller.exe
Token: SeDebugPrivilege	2480	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	2156	SantosExecutorInstaller.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2480	2156	SantosExecutorInstaller.exe	29
PID 2156 wrote to memory of 2480	2156	SantosExecutorInstaller.exe	29
PID 2156 wrote to memory of 2480	2156	SantosExecutorInstaller.exe	29
PID 2156 wrote to memory of 2680	2156	SantosExecutorInstaller.exe	31
PID 2156 wrote to memory of 2680	2156	SantosExecutorInstaller.exe	31
PID 2156 wrote to memory of 2680	2156	SantosExecutorInstaller.exe	31
PID 2156 wrote to memory of 2900	2156	SantosExecutorInstaller.exe	33
PID 2156 wrote to memory of 2900	2156	SantosExecutorInstaller.exe	33
PID 2156 wrote to memory of 2900	2156	SantosExecutorInstaller.exe	33
PID 2156 wrote to memory of 2548	2156	SantosExecutorInstaller.exe	35
PID 2156 wrote to memory of 2548	2156	SantosExecutorInstaller.exe	35
PID 2156 wrote to memory of 2548	2156	SantosExecutorInstaller.exe	35

C:\Users\Admin\AppData\Local\Temp\SantosExecutorInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\SantosExecutorInstaller.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156
- 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\SantosExecutorInstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SantosExecutorInstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2548

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1a2c23ab5e5a7a6b44e327ac079a2e5c

SHA1
5278e6eda3b8d115aeccf43fca489d03e00e6938

SHA256
3d60145335bb025e4bb8487e82fdb5cb1c832f13532a0b55922e59df672b868c

SHA512
411339f68bf5256281ce8aee3b99d68ca9d491206cadb230845ff69bd48f6c53e1fe4beb418c0a89a622ba29a7a23d1406f6709a65c216082f84c4abb1482a8a

Download Submit
memory/2156-0-0x000007FEF5843000-0x000007FEF5844000-memory.dmp

Filesize
4KB

Download
memory/2156-1-0x00000000012D0000-0x00000000012FE000-memory.dmp

Filesize
184KB

Download
memory/2156-2-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

Filesize
9.9MB

Download
memory/2156-33-0x000007FEF5843000-0x000007FEF5844000-memory.dmp

Filesize
4KB

Download
memory/2156-34-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

Filesize
9.9MB

Download
memory/2480-7-0x0000000002C50000-0x0000000002CD0000-memory.dmp

Filesize
512KB

Download
memory/2480-8-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2480-9-0x00000000026E0000-0x00000000026E8000-memory.dmp

Filesize
32KB

Download
memory/2680-15-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2680-16-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads