xworm | fb63758b69032986e72f3d9a3e95b651151dce8f4349aa539b65422beef5702a

Analysis

max time kernel
123s
max time network
140s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-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 1 IoCs

resource	yara_rule
behavioral19/memory/5108-1-0x0000000000050000-0x0000000000060000-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
2584	powershell.exe
3396	powershell.exe
4332	powershell.exe
812	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1798060429-1844192857-3165087720-1000\Control Panel\International\Geo\Nation	y.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surogate.lnk	y.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surogate.lnk	y.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-1-5-21-1798060429-1844192857-3165087720-1000\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
10	pastebin.com
11	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
7	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
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3396	powershell.exe
3396	powershell.exe
4332	powershell.exe
4332	powershell.exe
812	powershell.exe
812	powershell.exe
2584	powershell.exe
2584	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5108	y.exe
Token: SeDebugPrivilege	3396	powershell.exe
Token: SeIncreaseQuotaPrivilege	3396	powershell.exe
Token: SeSecurityPrivilege	3396	powershell.exe
Token: SeTakeOwnershipPrivilege	3396	powershell.exe
Token: SeLoadDriverPrivilege	3396	powershell.exe
Token: SeSystemProfilePrivilege	3396	powershell.exe
Token: SeSystemtimePrivilege	3396	powershell.exe
Token: SeProfSingleProcessPrivilege	3396	powershell.exe
Token: SeIncBasePriorityPrivilege	3396	powershell.exe
Token: SeCreatePagefilePrivilege	3396	powershell.exe
Token: SeBackupPrivilege	3396	powershell.exe
Token: SeRestorePrivilege	3396	powershell.exe
Token: SeShutdownPrivilege	3396	powershell.exe
Token: SeDebugPrivilege	3396	powershell.exe
Token: SeSystemEnvironmentPrivilege	3396	powershell.exe
Token: SeRemoteShutdownPrivilege	3396	powershell.exe
Token: SeUndockPrivilege	3396	powershell.exe
Token: SeManageVolumePrivilege	3396	powershell.exe
Token: 33	3396	powershell.exe
Token: 34	3396	powershell.exe
Token: 35	3396	powershell.exe
Token: 36	3396	powershell.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeIncreaseQuotaPrivilege	4332	powershell.exe
Token: SeSecurityPrivilege	4332	powershell.exe
Token: SeTakeOwnershipPrivilege	4332	powershell.exe
Token: SeLoadDriverPrivilege	4332	powershell.exe
Token: SeSystemProfilePrivilege	4332	powershell.exe
Token: SeSystemtimePrivilege	4332	powershell.exe
Token: SeProfSingleProcessPrivilege	4332	powershell.exe
Token: SeIncBasePriorityPrivilege	4332	powershell.exe
Token: SeCreatePagefilePrivilege	4332	powershell.exe
Token: SeBackupPrivilege	4332	powershell.exe
Token: SeRestorePrivilege	4332	powershell.exe
Token: SeShutdownPrivilege	4332	powershell.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeSystemEnvironmentPrivilege	4332	powershell.exe
Token: SeRemoteShutdownPrivilege	4332	powershell.exe
Token: SeUndockPrivilege	4332	powershell.exe
Token: SeManageVolumePrivilege	4332	powershell.exe
Token: 33	4332	powershell.exe
Token: 34	4332	powershell.exe
Token: 35	4332	powershell.exe
Token: 36	4332	powershell.exe
Token: SeDebugPrivilege	812	powershell.exe
Token: SeIncreaseQuotaPrivilege	812	powershell.exe
Token: SeSecurityPrivilege	812	powershell.exe
Token: SeTakeOwnershipPrivilege	812	powershell.exe
Token: SeLoadDriverPrivilege	812	powershell.exe
Token: SeSystemProfilePrivilege	812	powershell.exe
Token: SeSystemtimePrivilege	812	powershell.exe
Token: SeProfSingleProcessPrivilege	812	powershell.exe
Token: SeIncBasePriorityPrivilege	812	powershell.exe
Token: SeCreatePagefilePrivilege	812	powershell.exe
Token: SeBackupPrivilege	812	powershell.exe
Token: SeRestorePrivilege	812	powershell.exe
Token: SeShutdownPrivilege	812	powershell.exe
Token: SeDebugPrivilege	812	powershell.exe
Token: SeSystemEnvironmentPrivilege	812	powershell.exe
Token: SeRemoteShutdownPrivilege	812	powershell.exe
Token: SeUndockPrivilege	812	powershell.exe
Token: SeManageVolumePrivilege	812	powershell.exe
Token: 33	812	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 3396	5108	y.exe	84
PID 5108 wrote to memory of 3396	5108	y.exe	84
PID 5108 wrote to memory of 4332	5108	y.exe	87
PID 5108 wrote to memory of 4332	5108	y.exe	87
PID 5108 wrote to memory of 812	5108	y.exe	89
PID 5108 wrote to memory of 812	5108	y.exe	89
PID 5108 wrote to memory of 2584	5108	y.exe	91
PID 5108 wrote to memory of 2584	5108	y.exe	91
PID 5108 wrote to memory of 2576	5108	y.exe	93
PID 5108 wrote to memory of 2576	5108	y.exe	93

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⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5108
- 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:3396
- 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:4332
- 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:812
- 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
  PID:2584
- 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:2576

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

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Downloads

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
26c94c408a5a2e1e04f1191fc2902d3e

SHA1
ce50b153be03511bd62a477abf71a7e9f94e68a5

SHA256
86ad00a425874b935cc725f83780add09d08d7dc9cbfb705821955fe937c05ec

SHA512
70e7bc620b369d7d0fcf06f93da000819bf089a502f1014641ad14d56ead22f31c25b97363296fd3749c63bde6db3bf115b33504b160485d792e1331c337b586

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

Filesize
1KB

MD5
cd3ff24033bcac59bacd562de7e8f81e

SHA1
eb9bf2d35583075801c7faf9705f5bcfea9b9cda

SHA256
786ab4b8f344487365ba7e3bbe4ea8a2e310a25a42a5c579dd647b807d8e3875

SHA512
9b86fd5d942fb9031a87bfc4c552fc1286b72e53da43b2cb6e256c9332c3310f92453e04779a0d95a29201d8b90c7b043b754e1f43ea30f4176191e8050e946a

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

Filesize
1KB

MD5
29daeef2e92579b02c2a864fad203359

SHA1
2cd0b964ebcc0c7646370fe14416df2704f1d96f

SHA256
ffd227efd83ecda5b9716eea0086c1c71f76c6186cd0c1c3b60bd6a139e49d51

SHA512
7091fa3f254fbcc3dafc4f982960b673c672f04b87c1640a517edf0b47742f6d64ecda901a08ea5d949cef4914daadf1adea20260171d87d8e3d0a38f23d30c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ynla0cws.jhx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3396-13-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-14-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-15-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-16-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-17-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-20-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-12-0x000002265CDA0000-0x000002265CDC2000-memory.dmp

Filesize
136KB

Download
memory/5108-0-0x00007FFC7DB03000-0x00007FFC7DB05000-memory.dmp

Filesize
8KB

Download
memory/5108-2-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download
memory/5108-1-0x0000000000050000-0x0000000000060000-memory.dmp

Filesize
64KB

Download
memory/5108-59-0x00007FFC7DB00000-0x00007FFC7E5C2000-memory.dmp

Filesize
10.8MB

Download