xworm | 1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201

General

Target

1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Size

62KB
MD5

33f2e0edb3d56165f186cb8ba0d8346d
SHA1

240c5b0fd575ae1218b54f50d8f7b279f1f8958f
SHA256

1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201
SHA512

18a8bf379160fb850e286b933e37a96b965bd4f61e6260aff3ab01077c8245d6637e772bc5b1e1b0ec44c9c60274150d4fd132950e9885a618c269a61ac69b6b
SSDEEP

1536:jdQoncyC0zO9DOvOQuXCDsl+b9mEYzUBrk6PJMVOc6dP9:5b4iOB8jri+b9me17MVOcW9

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
AggeratorHost.exe
pastebin_url
https://pastebin.com/raw/9cuDuyiP

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1824-1-0x00000000009B0000-0x00000000009C6000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120fe-31.dat	family_xworm
behavioral1/memory/1624-33-0x00000000009A0000-0x00000000009B6000-memory.dmp	family_xworm
behavioral1/memory/2092-35-0x00000000001A0000-0x00000000001B6000-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
2928	powershell.exe
2596	powershell.exe
2748	powershell.exe
2432	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
1624	AggeratorHost.exe
2092	AggeratorHost.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\AggeratorHost = "C:\\Users\\Admin\\AppData\\Roaming\\AggeratorHost.exe"	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.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
2376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2432	powershell.exe
2928	powershell.exe
2596	powershell.exe
2748	powershell.exe
1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Token: SeDebugPrivilege	2432	powershell.exe
Token: SeDebugPrivilege	2928	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Token: SeDebugPrivilege	1624	AggeratorHost.exe
Token: SeDebugPrivilege	2092	AggeratorHost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2432	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	28
PID 1824 wrote to memory of 2432	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	28
PID 1824 wrote to memory of 2432	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	28
PID 1824 wrote to memory of 2928	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	30
PID 1824 wrote to memory of 2928	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	30
PID 1824 wrote to memory of 2928	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	30
PID 1824 wrote to memory of 2596	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	32
PID 1824 wrote to memory of 2596	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	32
PID 1824 wrote to memory of 2596	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	32
PID 1824 wrote to memory of 2748	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	34
PID 1824 wrote to memory of 2748	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	34
PID 1824 wrote to memory of 2748	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	34
PID 1824 wrote to memory of 2376	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	36
PID 1824 wrote to memory of 2376	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	36
PID 1824 wrote to memory of 2376	1824	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	36
PID 2804 wrote to memory of 1624	2804	taskeng.exe	39
PID 2804 wrote to memory of 1624	2804	taskeng.exe	39
PID 2804 wrote to memory of 1624	2804	taskeng.exe	39
PID 2804 wrote to memory of 2092	2804	taskeng.exe	40
PID 2804 wrote to memory of 2092	2804	taskeng.exe	40
PID 2804 wrote to memory of 2092	2804	taskeng.exe	40

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\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
"C:\Users\Admin\AppData\Local\Temp\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1824
- 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\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2928
- 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\AggeratorHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AggeratorHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AggeratorHost" /tr "C:\Users\Admin\AppData\Roaming\AggeratorHost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2376

C:\Windows\system32\taskeng.exe
taskeng.exe {B326AEC4-020C-4CA3-88F6-2004B2C28963} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
  C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1624
- C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
  C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2092

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\AggeratorHost.exe

Filesize
62KB

MD5
33f2e0edb3d56165f186cb8ba0d8346d

SHA1
240c5b0fd575ae1218b54f50d8f7b279f1f8958f

SHA256
1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201

SHA512
18a8bf379160fb850e286b933e37a96b965bd4f61e6260aff3ab01077c8245d6637e772bc5b1e1b0ec44c9c60274150d4fd132950e9885a618c269a61ac69b6b

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

Filesize
7KB

MD5
f57c4631a1f9f794ba4109fc10df55e2

SHA1
cae34e6f1ca03f6219598001066e339a3edcab0e

SHA256
0f066cbfdd828c06493b8b34748c97f5272f11eebe384ba47eec153635afd654

SHA512
3d45cf5c8ab283a6e2f8f098917a8723484ec9a81934f5a201a0d5dfe9b65aa2e36f575e6d67dd3415a97a7277cdac0a2cd3988e690bc81ff43979032e267747

Download Submit
memory/1624-33-0x00000000009A0000-0x00000000009B6000-memory.dmp

Filesize
88KB

Download
memory/1824-28-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/1824-0-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/1824-1-0x00000000009B0000-0x00000000009C6000-memory.dmp

Filesize
88KB

Download
memory/1824-29-0x000000001B220000-0x000000001B2A0000-memory.dmp

Filesize
512KB

Download
memory/1824-27-0x000000001B220000-0x000000001B2A0000-memory.dmp

Filesize
512KB

Download
memory/2092-35-0x00000000001A0000-0x00000000001B6000-memory.dmp

Filesize
88KB

Download
memory/2432-7-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2432-8-0x00000000029E0000-0x00000000029E8000-memory.dmp

Filesize
32KB

Download
memory/2432-6-0x0000000002A30000-0x0000000002AB0000-memory.dmp

Filesize
512KB

Download
memory/2928-15-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2928-14-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads