xworm | 7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246

General

Target

Midnight.exe
Size

73KB
MD5

af9ff800562a87e5121cad94adb74471
SHA1

ccadb2b20a7ee0cffeffed04e415ca131a7c41bc
SHA256

7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246
SHA512

004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892
SSDEEP

1536:q2H3hrFnT3fdHC0+aasbh0bkkNB/cxbRH6TTpH4ONThXiA:nXffdDznmbklxbCTpYOBhSA

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:56698

true-lung.gl.at.ply.gg:56698

Attributes

Install_directory
%Userprofile%
install_file
svhost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/3040-1-0x0000000001100000-0x0000000001118000-memory.dmp	family_xworm
behavioral1/files/0x000d00000001225c-35.dat	family_xworm
behavioral1/memory/1004-37-0x00000000003F0000-0x0000000000408000-memory.dmp	family_xworm
behavioral1/memory/660-40-0x0000000000F20000-0x0000000000F38000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1508	powershell.exe
2788	powershell.exe
1848	powershell.exe
2228	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1004	svhost.exe
660	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\svhost.exe"	Midnight.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

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

pid	Process
2960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1508	powershell.exe
2788	powershell.exe
1848	powershell.exe
2228	powershell.exe
3040	Midnight.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	Midnight.exe
Token: SeDebugPrivilege	1508	powershell.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	1848	powershell.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	3040	Midnight.exe
Token: SeDebugPrivilege	1004	svhost.exe
Token: SeDebugPrivilege	660	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3040	Midnight.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 1508	3040	Midnight.exe	31
PID 3040 wrote to memory of 1508	3040	Midnight.exe	31
PID 3040 wrote to memory of 1508	3040	Midnight.exe	31
PID 3040 wrote to memory of 2788	3040	Midnight.exe	33
PID 3040 wrote to memory of 2788	3040	Midnight.exe	33
PID 3040 wrote to memory of 2788	3040	Midnight.exe	33
PID 3040 wrote to memory of 1848	3040	Midnight.exe	35
PID 3040 wrote to memory of 1848	3040	Midnight.exe	35
PID 3040 wrote to memory of 1848	3040	Midnight.exe	35
PID 3040 wrote to memory of 2228	3040	Midnight.exe	37
PID 3040 wrote to memory of 2228	3040	Midnight.exe	37
PID 3040 wrote to memory of 2228	3040	Midnight.exe	37
PID 3040 wrote to memory of 2960	3040	Midnight.exe	39
PID 3040 wrote to memory of 2960	3040	Midnight.exe	39
PID 3040 wrote to memory of 2960	3040	Midnight.exe	39
PID 2720 wrote to memory of 1004	2720	taskeng.exe	42
PID 2720 wrote to memory of 1004	2720	taskeng.exe	42
PID 2720 wrote to memory of 1004	2720	taskeng.exe	42
PID 2720 wrote to memory of 660	2720	taskeng.exe	43
PID 2720 wrote to memory of 660	2720	taskeng.exe	43
PID 2720 wrote to memory of 660	2720	taskeng.exe	43

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\Midnight.exe
"C:\Users\Admin\AppData\Local\Temp\Midnight.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3040
- 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\Midnight.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1508
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Midnight.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2788
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2228
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\svhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2960

C:\Windows\system32\taskeng.exe
taskeng.exe {58080F03-A79F-44BF-A108-BFDEFB8112FA} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Users\Admin\svhost.exe
  C:\Users\Admin\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1004
- C:\Users\Admin\svhost.exe
  C:\Users\Admin\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:660

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

1

T1012

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
8f4d09cb39ed700ddc275664528f95be

SHA1
f64023e6cef92014bc7efd72391aece9c2679104

SHA256
3d44938c912ec20097adf5938d95225bb9ef01b15b99edc2d608bc4578320b3f

SHA512
86d3ca0c3a99188343641ce847a65e2a8396f3cff815e0bc72ab57a232b073b8a3ae3611bb9cb556febcf4c2e171702ad97545ea47a9508eac52506ba3f9c984

Download Submit
C:\Users\Admin\svhost.exe

Filesize
73KB

MD5
af9ff800562a87e5121cad94adb74471

SHA1
ccadb2b20a7ee0cffeffed04e415ca131a7c41bc

SHA256
7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246

SHA512
004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892

Download Submit
memory/660-40-0x0000000000F20000-0x0000000000F38000-memory.dmp

Filesize
96KB

Download
memory/1004-37-0x00000000003F0000-0x0000000000408000-memory.dmp

Filesize
96KB

Download
memory/1508-7-0x000000001B200000-0x000000001B4E2000-memory.dmp

Filesize
2.9MB

Download
memory/1508-8-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download
memory/2788-14-0x000000001B260000-0x000000001B542000-memory.dmp

Filesize
2.9MB

Download
memory/2788-15-0x00000000025D0000-0x00000000025D8000-memory.dmp

Filesize
32KB

Download
memory/3040-16-0x000007FEF5EB3000-0x000007FEF5EB4000-memory.dmp

Filesize
4KB

Download
memory/3040-33-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-0-0x000007FEF5EB3000-0x000007FEF5EB4000-memory.dmp

Filesize
4KB

Download
memory/3040-2-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-1-0x0000000001100000-0x0000000001118000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads