xworm | 5d8c53e451c55ce6969cfe254e0c22a3c48915c1400c66fc9dc806d7ad824f24

General

Target

rat test xworm.exe
Size

65KB
MD5

fbe7f61c52a1754815d5da441a4fb469
SHA1

5540bfc30a9b05f1972d896283bd1f107db18987
SHA256

5d8c53e451c55ce6969cfe254e0c22a3c48915c1400c66fc9dc806d7ad824f24
SHA512

e524006b40df8d3a677f20928d6fb5f31d08197d351bcfcdb30bd08cf041500794998728397119775d584f4f3f4359e7d881deea4aec9f9cc9add524454d4635
SSDEEP

1536:axvYQ2kEC1wXbFDGTRwZrt6UxKQO7U/1iI:ahYeLKbRTLO7U95

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:21252

land-long.gl.at.ply.gg:21252

Attributes

Install_directory
%Userprofile%
install_file
svchost.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2156-1-0x00000000013C0000-0x00000000013D6000-memory.dmp	family_xworm
behavioral1/files/0x000b000000016a47-35.dat	family_xworm
behavioral1/memory/2860-37-0x0000000001340000-0x0000000001356000-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
2756	powershell.exe
2616	powershell.exe
2896	powershell.exe
2136	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	rat test xworm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	rat test xworm.exe

Executes dropped EXE 3 IoCs

pid	Process
2860	svchost.exe
2320	svchost.exe
860	svchost.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\svchost.exe"	rat test 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.

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
692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2756	powershell.exe
2616	powershell.exe
2896	powershell.exe
2136	powershell.exe
2156	rat test xworm.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	rat test xworm.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	2156	rat test xworm.exe
Token: SeDebugPrivilege	2860	svchost.exe
Token: SeDebugPrivilege	2320	svchost.exe
Token: SeDebugPrivilege	860	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2156	rat test xworm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2756	2156	rat test xworm.exe	31
PID 2156 wrote to memory of 2756	2156	rat test xworm.exe	31
PID 2156 wrote to memory of 2756	2156	rat test xworm.exe	31
PID 2156 wrote to memory of 2616	2156	rat test xworm.exe	33
PID 2156 wrote to memory of 2616	2156	rat test xworm.exe	33
PID 2156 wrote to memory of 2616	2156	rat test xworm.exe	33
PID 2156 wrote to memory of 2896	2156	rat test xworm.exe	35
PID 2156 wrote to memory of 2896	2156	rat test xworm.exe	35
PID 2156 wrote to memory of 2896	2156	rat test xworm.exe	35
PID 2156 wrote to memory of 2136	2156	rat test xworm.exe	37
PID 2156 wrote to memory of 2136	2156	rat test xworm.exe	37
PID 2156 wrote to memory of 2136	2156	rat test xworm.exe	37
PID 2156 wrote to memory of 692	2156	rat test xworm.exe	39
PID 2156 wrote to memory of 692	2156	rat test xworm.exe	39
PID 2156 wrote to memory of 692	2156	rat test xworm.exe	39
PID 1248 wrote to memory of 2860	1248	taskeng.exe	42
PID 1248 wrote to memory of 2860	1248	taskeng.exe	42
PID 1248 wrote to memory of 2860	1248	taskeng.exe	42
PID 1248 wrote to memory of 2320	1248	taskeng.exe	44
PID 1248 wrote to memory of 2320	1248	taskeng.exe	44
PID 1248 wrote to memory of 2320	1248	taskeng.exe	44
PID 1248 wrote to memory of 860	1248	taskeng.exe	45
PID 1248 wrote to memory of 860	1248	taskeng.exe	45
PID 1248 wrote to memory of 860	1248	taskeng.exe	45

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\rat test xworm.exe
"C:\Users\Admin\AppData\Local\Temp\rat test xworm.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: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\rat test xworm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rat test xworm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- 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:2896
- 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:2136
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:692

C:\Windows\system32\taskeng.exe
taskeng.exe {5A26003C-1DB6-4141-89BE-26302762873F} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2320
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:860

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
7c4378020ac1964eb0e535ce22d93fe3

SHA1
8a31c43737de9faa2b43a3e182125cdd0443e52b

SHA256
42cba9e88b102db6d2287e75a4d28993c1c160ecb0833543e302d28cf6a5b8ef

SHA512
a9fddfb836157bd95fca276b376ea8ae93d4f7222bbc2adc31a088796634d9fb537389429334ad2521dd6c48e724b2633c251fb600af179aab21dd9d7cf08417

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

Filesize
65KB

MD5
fbe7f61c52a1754815d5da441a4fb469

SHA1
5540bfc30a9b05f1972d896283bd1f107db18987

SHA256
5d8c53e451c55ce6969cfe254e0c22a3c48915c1400c66fc9dc806d7ad824f24

SHA512
e524006b40df8d3a677f20928d6fb5f31d08197d351bcfcdb30bd08cf041500794998728397119775d584f4f3f4359e7d881deea4aec9f9cc9add524454d4635

Download Submit
memory/2156-2-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

Filesize
9.9MB

Download
memory/2156-0-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

Filesize
4KB

Download
memory/2156-28-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

Filesize
4KB

Download
memory/2156-1-0x00000000013C0000-0x00000000013D6000-memory.dmp

Filesize
88KB

Download
memory/2156-38-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

Filesize
9.9MB

Download
memory/2616-15-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/2616-16-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2756-7-0x0000000002980000-0x0000000002A00000-memory.dmp

Filesize
512KB

Download
memory/2756-8-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2756-9-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/2860-37-0x0000000001340000-0x0000000001356000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads