xworm | feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f

General

Target

feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
Size

40KB
MD5

3ab61ee8a81099edddf87af587420a10
SHA1

d6c0f6f60d13cc786cf7ac0df2c45b5dc47b945c
SHA256

feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f
SHA512

f43326c79ea8bd118fd90efc8c2c8306e02901727ffd7c6666b2a35820eb8799976007f4886a68a7f411509ad61dcf7ddf5a3630fa5342014ad5aa978818ff3f
SSDEEP

768:pNfPMSk3K/EzTb/008WuFZ4ZJF5PC9O9Fy68OMhi3/aV:nf05a/CTjp89IFc9Uc68OMsi

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

154.197.69.165:7000

Mutex

jcTVbnlMjCEJAYCp

Attributes

Install_directory
%AppData%
install_file
crss.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1752-1-0x0000000000380000-0x0000000000390000-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
2616	powershell.exe
332	powershell.exe
2892	powershell.exe
2344	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\crss.lnk	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\crss.lnk	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.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
2	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 5 IoCs

pid	Process
2892	powershell.exe
2344	powershell.exe
2616	powershell.exe
332	powershell.exe
1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	332	powershell.exe
Token: SeDebugPrivilege	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2892	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	31
PID 1752 wrote to memory of 2892	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	31
PID 1752 wrote to memory of 2892	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	31
PID 1752 wrote to memory of 2344	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	33
PID 1752 wrote to memory of 2344	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	33
PID 1752 wrote to memory of 2344	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	33
PID 1752 wrote to memory of 2616	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	35
PID 1752 wrote to memory of 2616	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	35
PID 1752 wrote to memory of 2616	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	35
PID 1752 wrote to memory of 332	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	37
PID 1752 wrote to memory of 332	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	37
PID 1752 wrote to memory of 332	1752	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	37

C:\Users\Admin\AppData\Local\Temp\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
"C:\Users\Admin\AppData\Local\Temp\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1752
- 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\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2344
- 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\crss.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 -ExclusionProcess 'crss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
2c52edc915e51e67a85a30ff2aa8db3a

SHA1
54bf217de9a6677636db50ca49e543b12852c92d

SHA256
297698a519ff66f509c5ebd3e1653f4f03b87f9c3665e77712545662140d3dca

SHA512
f0f7eba46c7e92d272a1c11b5c18b6715fc4fe24f9abe90fd17fd95004b39b33d83efdad2867c74c3e71ff377ed24ecdd06a2675127dcc37ecdec6324f3f6861

Download Submit
memory/1752-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/1752-1-0x0000000000380000-0x0000000000390000-memory.dmp

Filesize
64KB

Download
memory/1752-2-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/1752-32-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/1752-33-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2344-14-0x000000001B480000-0x000000001B762000-memory.dmp

Filesize
2.9MB

Download
memory/2344-15-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/2892-7-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2892-8-0x0000000002770000-0x0000000002778000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing