xworm | 5e83047d8407d37fbe2ad843c7844d0d6189adc107988b389ce1fa9f9c508748

Analysis

max time kernel
24s
max time network
28s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
08-11-2024 01:35

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General

Target

Rust.Aim/First.ps1
Size

1KB
MD5

355758fa44771365dfe136f62ad45d7b
SHA1

6201b4545c3593ab65d49d41609ac722166a6563
SHA256

ec083e27ff17a38cba680f48e6468cbdadb4ee45561f58b8a941cc3452c9ac11
SHA512

3cbecf52f2132398ae72e7ad074a6f4bb69dabc2666e07826b6b35f3853cdbb1881e8848e0fe46897496b50c9de81618865e5cdd1cb03a723ef24d9a888fd4d1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

here-thinking.gl.at.ply.gg:50161

Attributes

Install_directory
%LocalAppData%
install_file
WindowsSecurity.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001c00000002ab87-31.dat	family_xworm
behavioral1/memory/3692-38-0x0000000000880000-0x0000000000898000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	2808	powershell.exe
3	2808	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2808	powershell.exe
5164	powershell.exe
5520	powershell.exe
896	powershell.exe
2476	powershell.exe

Deletes itself 1 IoCs

pid	Process
2808	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3692	Windows.Security.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-1-5-21-3870231897-2573482396-1083937135-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsSecurity = "C:\\Users\\Admin\\AppData\\Local\\WindowsSecurity.exe"	Windows.Security.exe

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

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
3	raw.githubusercontent.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
2604	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2808	powershell.exe
2808	powershell.exe
5164	powershell.exe
5164	powershell.exe
5520	powershell.exe
5520	powershell.exe
896	powershell.exe
896	powershell.exe
2476	powershell.exe
2476	powershell.exe
3692	Windows.Security.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	3692	Windows.Security.exe
Token: SeDebugPrivilege	5164	powershell.exe
Token: SeDebugPrivilege	5520	powershell.exe
Token: SeDebugPrivilege	896	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	3692	Windows.Security.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3692	Windows.Security.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2768	2808	powershell.exe	78
PID 2808 wrote to memory of 2768	2808	powershell.exe	78
PID 2768 wrote to memory of 3980	2768	csc.exe	79
PID 2768 wrote to memory of 3980	2768	csc.exe	79
PID 2808 wrote to memory of 3692	2808	powershell.exe	80
PID 2808 wrote to memory of 3692	2808	powershell.exe	80
PID 3692 wrote to memory of 5164	3692	Windows.Security.exe	81
PID 3692 wrote to memory of 5164	3692	Windows.Security.exe	81
PID 3692 wrote to memory of 5520	3692	Windows.Security.exe	83
PID 3692 wrote to memory of 5520	3692	Windows.Security.exe	83
PID 3692 wrote to memory of 896	3692	Windows.Security.exe	85
PID 3692 wrote to memory of 896	3692	Windows.Security.exe	85
PID 3692 wrote to memory of 2476	3692	Windows.Security.exe	87
PID 3692 wrote to memory of 2476	3692	Windows.Security.exe	87
PID 3692 wrote to memory of 2604	3692	Windows.Security.exe	89
PID 3692 wrote to memory of 2604	3692	Windows.Security.exe	89

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:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Rust.Aim\First.ps1
1⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4xebikob\4xebikob.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESADE3.tmp" "c:\Users\Admin\AppData\Local\Temp\4xebikob\CSC4EA1258F932E4F99A973A0CBFE943254.TMP"
    3⤵
    PID:3980
- C:\Users\Admin\AppData\Local\Temp\Windows.Security.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows.Security.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3692
- - 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\Windows.Security.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5164
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows.Security.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5520
- - 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\WindowsSecurity.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:896
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsSecurity.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2476
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsSecurity" /tr "C:\Users\Admin\AppData\Local\WindowsSecurity.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2604

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
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
d0a4a3b9a52b8fe3b019f6cd0ef3dad6

SHA1
fed70ce7834c3b97edbd078eccda1e5effa527cd

SHA256
21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31

SHA512
1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b

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

Filesize
944B

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

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

Filesize
944B

MD5
100ce52a767dcfc81fb350dce62d800f

SHA1
33e2f69b40104bb85773f0cfdb7966c56a9eb974

SHA256
d7ed168d92ba27fe4eb9bb220e6f88951357142e3ff088c757fb83b7575236b4

SHA512
83c499a634b0687a7d16395cdf30cf9556d0e8bee27b711c9c045369641f793b03bc15b62c92be42925a0b4a28b9c94adfe9aab97461a46e48a323c5d2989953

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

Filesize
1KB

MD5
2766a3e39fbca2dc2a133045718ec406

SHA1
67792da1729fa8076b85e1b8e4e4152bafd64cb3

SHA256
24e2819c0a9d777a3702bfba92fc27cc465abf63604fa1395a3538d01c6b385f

SHA512
b3f14fd8fd7483c446637105383eb7041feea684ce0e57297f1e1069dd899a44fc1b646dfb37c7473563170668ba546a9640a7c03ebd96a6a3b7305a7050d840

Download Submit
C:\Users\Admin\AppData\Local\Temp\4xebikob\4xebikob.dll

Filesize
3KB

MD5
8e74fff03b3effba7a2a843241c43ea3

SHA1
35d423b32c3907a3b9924dc9ac4765c6989f15f6

SHA256
a97727b1639ce02107818689ed6bb53ebed6973cdac3542d3379dcde5cf2747e

SHA512
beb8841d7a87d9a6bc3cfafd8d4af6372a1e1af7bd537005d028df523bfc17dc1e0c09cc6f99421d5cec0639f554cf9ce7af2fe67b1d0ba0a21ab4ee9df323a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESADE3.tmp

Filesize
1KB

MD5
bea46726ac20a684b79097a03e3e92ec

SHA1
dce8757380c1de6256199febb911935bb853ac8a

SHA256
469bf270e34eb63dea34e515b38a45a135fc97974c4914b23e57ce200cf949f7

SHA512
99de4c37e9b666c81348da2edf220ce18fd823c6aeeaed4526c085f7328b186adde5e3719ac9b9f327126cc88ba8287b949cbaf041ab5711ad59572cc451d80f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows.Security.exe

Filesize
69KB

MD5
0dda7546fa4191f63d9e6ec287737048

SHA1
6a787a4bafae5cf50cf1226a3b19981b89f144d8

SHA256
496df744057714699bed70787c5419937099f52a0e6f382172cb26b2e510197c

SHA512
d4dee4c9269ea7834ed831e802307d58eb82b7b86d67deb868748f51dbe9f138dfb29e046edda8f938c31728ecd9bfbd581b89a8670e32ca542cb275eccdc47f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e2xwzvfp.h0a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4xebikob\4xebikob.0.cs

Filesize
298B

MD5
d2dd7b143c5631aa598407bbe81ef5db

SHA1
a5c77b81db6300d7a7eb424875c96e2611d42d83

SHA256
b3ccd5d9083909c89f8201c421434ec38280c051597b5414559c1df7fcf31cfe

SHA512
bd2cc89e16b2d9ffee6e8e32c9474acd2ba1f9db187b26aa0c9dbde8b7e58476e96756cb6d6d46e8b18b7e1c936d4febc093196e690e35f2002c7da6331fbb62

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4xebikob\4xebikob.cmdline

Filesize
369B

MD5
00de325301b8647d55a1b087bb5ebfdb

SHA1
4a223382d25ab6d6aa765e664a3e161f03f0783d

SHA256
617172f3bcdd3256c28a06f6214b5b34d308f9a104add6f0dc85b4649c3ef766

SHA512
aa33890f396df5a760f1620722af5cb83a5d29d1557a1e0f82e48ed8e3bad0f5ccbc11728018a3bd509ebbc97dd002dce45db7202a0654bcd6ff8f32b7187a42

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4xebikob\CSC4EA1258F932E4F99A973A0CBFE943254.TMP

Filesize
652B

MD5
f03b8f4efc3808d89044ecc571ef0bb9

SHA1
a10a47409b772cb0747a6e847ad17be6a3f1c2e0

SHA256
91d1b5fc1605a9da8852290de8c95ec8cf772766117cf6927c07a3d3c9ad1dfd

SHA512
2d91da452ddd70ed72c8addf82e2c1809fbc91b8b9e5f11a42d7ec09a0166938ba4838264692784bf8102d816941f4a05a7bf15cfdec34dfd0013d33754f2dc7

Download Submit
memory/2808-14-0x00007FFAABF10000-0x00007FFAAC9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2808-25-0x000001663D370000-0x000001663D378000-memory.dmp

Filesize
32KB

Download
memory/2808-0-0x00007FFAABF13000-0x00007FFAABF15000-memory.dmp

Filesize
8KB

Download
memory/2808-11-0x00007FFAABF10000-0x00007FFAAC9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2808-10-0x00007FFAABF10000-0x00007FFAAC9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2808-9-0x000001663D390000-0x000001663D3B2000-memory.dmp

Filesize
136KB

Download
memory/2808-86-0x00007FFAABF10000-0x00007FFAAC9D2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-38-0x0000000000880000-0x0000000000898000-memory.dmp

Filesize
96KB

Download