xworm | f82ebddace7d6290ddbd12051aa19e3cd1355762196936f686e26dd5e5c47b60

General

Target

Solara.exe
Size

44KB
MD5

cb5aa995d9843fd0f787743a2a860dec
SHA1

ff1de916764d817ed1ac6dd036d5b02f1810d016
SHA256

f82ebddace7d6290ddbd12051aa19e3cd1355762196936f686e26dd5e5c47b60
SHA512

8c5500738e06c6701c29019a5d6bb391ae1c1e9fccbbceed0d6c44669a35450074052540ee40a100df0b9c0cc4273d618f6151c094a00538f6583f3969f03529
SSDEEP

768:BFM3oVOl50FADMe/e2TJblsUUdvFFRPG9+l56OOChwvmbWp:vMK650osOevFw9+76OOC+uip

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:46867

disease-tattoo.gl.at.ply.gg:46867

Mutex

0vTMyU9SDotxIpQj

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2400-1-0x0000000000A00000-0x0000000000A12000-memory.dmp	family_xworm
behavioral1/files/0x0009000000018784-34.dat	family_xworm
behavioral1/memory/2404-36-0x00000000011B0000-0x00000000011C2000-memory.dmp	family_xworm
behavioral1/memory/2264-40-0x0000000000020000-0x0000000000032000-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
2260	powershell.exe
2720	powershell.exe
2948	powershell.exe
2916	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	Solara.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	Solara.exe

Executes dropped EXE 3 IoCs

pid	Process
2404	svchost.exe
628	svchost.exe
2264	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Solara.exe

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
2664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2260	powershell.exe
2720	powershell.exe
2948	powershell.exe
2916	powershell.exe
2400	Solara.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	Solara.exe
Token: SeDebugPrivilege	2260	powershell.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	2916	powershell.exe
Token: SeDebugPrivilege	2400	Solara.exe
Token: SeDebugPrivilege	2404	svchost.exe
Token: SeDebugPrivilege	628	svchost.exe
Token: SeDebugPrivilege	2264	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2400	Solara.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2260	2400	Solara.exe	31
PID 2400 wrote to memory of 2260	2400	Solara.exe	31
PID 2400 wrote to memory of 2260	2400	Solara.exe	31
PID 2400 wrote to memory of 2720	2400	Solara.exe	33
PID 2400 wrote to memory of 2720	2400	Solara.exe	33
PID 2400 wrote to memory of 2720	2400	Solara.exe	33
PID 2400 wrote to memory of 2948	2400	Solara.exe	35
PID 2400 wrote to memory of 2948	2400	Solara.exe	35
PID 2400 wrote to memory of 2948	2400	Solara.exe	35
PID 2400 wrote to memory of 2916	2400	Solara.exe	37
PID 2400 wrote to memory of 2916	2400	Solara.exe	37
PID 2400 wrote to memory of 2916	2400	Solara.exe	37
PID 2400 wrote to memory of 2664	2400	Solara.exe	39
PID 2400 wrote to memory of 2664	2400	Solara.exe	39
PID 2400 wrote to memory of 2664	2400	Solara.exe	39
PID 2020 wrote to memory of 2404	2020	taskeng.exe	42
PID 2020 wrote to memory of 2404	2020	taskeng.exe	42
PID 2020 wrote to memory of 2404	2020	taskeng.exe	42
PID 2020 wrote to memory of 628	2020	taskeng.exe	44
PID 2020 wrote to memory of 628	2020	taskeng.exe	44
PID 2020 wrote to memory of 628	2020	taskeng.exe	44
PID 2020 wrote to memory of 2264	2020	taskeng.exe	45
PID 2020 wrote to memory of 2264	2020	taskeng.exe	45
PID 2020 wrote to memory of 2264	2020	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\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.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:2400
- 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\Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2260
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2948
- 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:2916
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2664

C:\Windows\system32\taskeng.exe
taskeng.exe {4AEFE119-7936-49E5-9C8E-E445A8372811} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2404
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:628
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2264

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
0e676b080d32a2aa641b65a8ee1f3eba

SHA1
5af6fae3896a2f267ddd1845c744ac3fa1dcdd6b

SHA256
9fc3c521f3014c461bc78ee2f5d1470aaca37eef9f038fc82093d0383007887b

SHA512
e7037328fdf6a5487d1b353e3fc334b16527be6abb72f3ee8db3aa1b298d631a581732aaa24141cb988b739c6bb77d7e74b9f13833a14e52d558f3fb06a780db

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

Filesize
44KB

MD5
cb5aa995d9843fd0f787743a2a860dec

SHA1
ff1de916764d817ed1ac6dd036d5b02f1810d016

SHA256
f82ebddace7d6290ddbd12051aa19e3cd1355762196936f686e26dd5e5c47b60

SHA512
8c5500738e06c6701c29019a5d6bb391ae1c1e9fccbbceed0d6c44669a35450074052540ee40a100df0b9c0cc4273d618f6151c094a00538f6583f3969f03529

Download Submit
memory/2260-6-0x0000000002990000-0x0000000002A10000-memory.dmp

Filesize
512KB

Download
memory/2260-7-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2260-8-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download
memory/2264-40-0x0000000000020000-0x0000000000032000-memory.dmp

Filesize
72KB

Download
memory/2400-32-0x000007FEF5023000-0x000007FEF5024000-memory.dmp

Filesize
4KB

Download
memory/2400-0-0x000007FEF5023000-0x000007FEF5024000-memory.dmp

Filesize
4KB

Download
memory/2400-1-0x0000000000A00000-0x0000000000A12000-memory.dmp

Filesize
72KB

Download
memory/2404-36-0x00000000011B0000-0x00000000011C2000-memory.dmp

Filesize
72KB

Download
memory/2720-15-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2720-14-0x000000001B730000-0x000000001BA12000-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