xworm | fb63758b69032986e72f3d9a3e95b651151dce8f4349aa539b65422beef5702a

Analysis

max time kernel
125s
max time network
144s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
18-12-2024 19:34

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General

Target

Loli-Mod-main/y.exe
Size

38KB
MD5

9212396ec7e75aee632a2304c9050bb3
SHA1

ecd187b60d5619ba78ab54bdd43ab9419ca4a72d
SHA256

6b82fc5f7ed107648cdb24ebd5f2aa0cff16af9d736ac8455175498a7ad47266
SHA512

b00528fa583cbd17b4a7b3f474c8177a288d95ab0f80aca1381434cb15df7fe0b2a9b7d6ea95d4ec55e8ad279f7473db07dde82d1ec408a46cbb60b4e4c5d2a4
SSDEEP

768:AXI+D3yb6a5up+I3pHGFyw9/PO6rO/hbPNQU:AnDiHDsEFr9HO6rO/NOU

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

GQrSWs3TiKJsppyp

Attributes

Install_directory
%AppData%
install_file
COM Surogate.exe
pastebin_url
https://pastebin.com/raw/EJ2UmS6u

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral20/memory/1788-1-0x0000000000C20000-0x0000000000C30000-memory.dmp	family_xworm
behavioral20/files/0x002000000002ab15-58.dat	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
2240	powershell.exe
956	powershell.exe
3332	powershell.exe
3900	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1896	COM Surogate.exe
912	COM Surogate.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-1-5-21-2253712635-4068079004-3870069674-1000\Software\Microsoft\Windows\CurrentVersion\Run\COM Surogate = "C:\\Users\\Admin\\AppData\\Roaming\\COM Surogate.exe"	y.exe

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

Web Service

T1102

flow	ioc
3	pastebin.com
1	pastebin.com

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
1	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
1432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2240	powershell.exe
2240	powershell.exe
956	powershell.exe
956	powershell.exe
3332	powershell.exe
3332	powershell.exe
3900	powershell.exe
3900	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	y.exe
Token: SeDebugPrivilege	2240	powershell.exe
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	3332	powershell.exe
Token: SeDebugPrivilege	3900	powershell.exe
Token: SeDebugPrivilege	1788	y.exe
Token: SeDebugPrivilege	1896	COM Surogate.exe
Token: SeDebugPrivilege	912	COM Surogate.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 2240	1788	y.exe	78
PID 1788 wrote to memory of 2240	1788	y.exe	78
PID 1788 wrote to memory of 956	1788	y.exe	80
PID 1788 wrote to memory of 956	1788	y.exe	80
PID 1788 wrote to memory of 3332	1788	y.exe	82
PID 1788 wrote to memory of 3332	1788	y.exe	82
PID 1788 wrote to memory of 3900	1788	y.exe	84
PID 1788 wrote to memory of 3900	1788	y.exe	84
PID 1788 wrote to memory of 1432	1788	y.exe	86
PID 1788 wrote to memory of 1432	1788	y.exe	86

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\Loli-Mod-main\y.exe
"C:\Users\Admin\AppData\Local\Temp\Loli-Mod-main\y.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1788
- 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\Loli-Mod-main\y.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2240
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'y.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:956
- 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\COM Surogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3332
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'COM Surogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3900
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "COM Surogate" /tr "C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1432

C:\Users\Admin\AppData\Roaming\COM Surogate.exe
"C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Users\Admin\AppData\Roaming\COM Surogate.exe
"C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\COM Surogate.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6903d57eed54e89b68ebb957928d1b99

SHA1
fade011fbf2e4bc044d41e380cf70bd6a9f73212

SHA256
36cbb00b016c9f97645fb628ef72b524dfbdf6e08d626e5c837bbbb9075dcb52

SHA512
c192ea9810fd22de8378269235c1035aa1fe1975a53c876fe4a7acc726c020f94773c21e4e4771133f9fcedb0209f0a5324c594c1db5b28fe1b27644db4fdc9e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
4093e5ab3812960039eba1a814c2ffb0

SHA1
b5e4a98a80be72fccd3cc910e93113d2febef298

SHA256
c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c

SHA512
f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t01ivazf.cvh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\COM Surogate.exe

Filesize
38KB

MD5
9212396ec7e75aee632a2304c9050bb3

SHA1
ecd187b60d5619ba78ab54bdd43ab9419ca4a72d

SHA256
6b82fc5f7ed107648cdb24ebd5f2aa0cff16af9d736ac8455175498a7ad47266

SHA512
b00528fa583cbd17b4a7b3f474c8177a288d95ab0f80aca1381434cb15df7fe0b2a9b7d6ea95d4ec55e8ad279f7473db07dde82d1ec408a46cbb60b4e4c5d2a4

Download Submit
memory/1788-1-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/1788-2-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/1788-0-0x00007FF9F22F3000-0x00007FF9F22F5000-memory.dmp

Filesize
8KB

Download
memory/1788-56-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/1788-21-0x00007FF9F22F3000-0x00007FF9F22F5000-memory.dmp

Filesize
8KB

Download
memory/2240-4-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/2240-19-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/2240-16-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/2240-15-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/2240-11-0x0000029FF6630000-0x0000029FF6652000-memory.dmp

Filesize
136KB

Download
memory/2240-5-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download
memory/2240-3-0x00007FF9F22F0000-0x00007FF9F2DB2000-memory.dmp

Filesize
10.8MB

Download