Malware Analysis Report

2024-09-11 14:50

Sample ID 240609-r57mpscc92
Target XClient.exe
SHA256 8a12e43e50b652c7b7c34210192fa128ed57bb18781c2b97fa650e4a00c6c151
Tags
xworm execution persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8a12e43e50b652c7b7c34210192fa128ed57bb18781c2b97fa650e4a00c6c151

Threat Level: Known bad

The file XClient.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm

Xworm family

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Drops startup file

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-09 14:47

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm family

xworm

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 14:47

Reported

2024-06-09 14:50

Platform

win7-20240215-en

Max time kernel

104s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Local\\svhost.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1568 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1568 wrote to memory of 1268 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe
PID 1568 wrote to memory of 1268 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe
PID 1568 wrote to memory of 1268 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe

Processes

C:\Users\Admin\AppData\Local\Temp\XClient.exe

"C:\Users\Admin\AppData\Local\Temp\XClient.exe"

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\XClient.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'

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\svhost.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'

C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe

"C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 dance-acres.gl.at.ply.gg udp
US 147.185.221.19:60153 dance-acres.gl.at.ply.gg tcp

Files

memory/1568-0-0x000007FEF5A43000-0x000007FEF5A44000-memory.dmp

memory/1568-1-0x0000000000950000-0x0000000000968000-memory.dmp

memory/2220-6-0x00000000028B0000-0x0000000002930000-memory.dmp

memory/2220-7-0x000000001B750000-0x000000001BA32000-memory.dmp

memory/2220-8-0x00000000027E0000-0x00000000027E8000-memory.dmp

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

MD5 4505c602e635670c6e6405d355754f4d
SHA1 9edd1d810caba8c87eb650a36cf31217f9c6d2f7
SHA256 07f67c9c76e55c70d7cc128547056f9d24b516e4ff5f73550d9e8b1a0a25d110
SHA512 3238d255e4f264a9d710baed0d3c2180121e057b852af1668d649bf88cd81b5e3e94b18c8e31bd45d280495ef33d16da17238557fccea2d6b4a24aafe4bc7e72

memory/2416-15-0x0000000001C80000-0x0000000001C88000-memory.dmp

memory/2416-14-0x000000001B690000-0x000000001B972000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/1568-31-0x000000001AE90000-0x000000001AF10000-memory.dmp

memory/1568-32-0x000007FEF5A43000-0x000007FEF5A44000-memory.dmp

memory/1568-33-0x000000001AE90000-0x000000001AF10000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe

MD5 13138ee1f5c68e4658929be3ce3a604c
SHA1 e28022bcd8d2e1ef36cc312929aeeb9ef3eff036
SHA256 f3bf24d61421a158d5150e238387f9df600621902711dfbd89883d642c441689
SHA512 30521f6689b0b93901caf21d7a935b9f4d1d33d7eb8344e7e7f04b41b8e5576d2292bb5f106163aceaa7bbd05c0eb076b7d7bef1b65b5f5453956a5aecb3ac03

memory/1268-41-0x000000013F860000-0x000000014025C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tuqmfb.exe

MD5 53dc76765e74aed7a45d9b648c9c00b2
SHA1 b37b6643b3e67929f0e14a06e99a7e0de233bbe6
SHA256 5f6112d460b995ba98a8d503a5e1ff51c96ce1d9da7e075eeb5a62c2f199ee32
SHA512 fd3c539579aad019829a10db72076947cbef1c3ca1ee9e2ef815067db30760564610ffbde715d715a8afedb94ba4645b6f6580be769b7f41610ebb5b2f63400d

\Users\Admin\AppData\Local\Temp\tuqmfb.exe

MD5 267fc05d97a2ab4207851e618dc38da2
SHA1 6a4400fe197f25f1dc6840d66221af695335d822
SHA256 b6b3e177720b221fadf38a223533d70bc1a30b78e0f2bcf53754121547220e91
SHA512 6f459dd542bf582aa414932c2876060d112f474f82d7a7bf5f3d26364d223a26fb7a6316b2df3a780d3e19138336a5949ea7fb12da5ede415a131a70724668db

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 14:47

Reported

2024-06-09 14:50

Platform

win10v2004-20240226-en

Max time kernel

135s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\vowqfl.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Local\\svhost.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\XClient.exe

"C:\Users\Admin\AppData\Local\Temp\XClient.exe"

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\XClient.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'

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\svhost.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3940 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8

C:\Users\Admin\AppData\Local\Temp\vowqfl.exe

"C:\Users\Admin\AppData\Local\Temp\vowqfl.exe"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x4e8 0x408

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 dance-acres.gl.at.ply.gg udp
US 147.185.221.19:60153 dance-acres.gl.at.ply.gg tcp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
FR 142.250.75.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 pki.goog udp
US 8.8.8.8:53 pki.goog udp
US 216.239.32.29:80 pki.goog tcp
US 8.8.8.8:53 234.75.250.142.in-addr.arpa udp
US 8.8.8.8:53 29.32.239.216.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 203.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 147.185.221.19:60153 dance-acres.gl.at.ply.gg tcp
US 8.8.8.8:53 66.112.168.52.in-addr.arpa udp

Files

memory/3372-0-0x00007FF984463000-0x00007FF984465000-memory.dmp

memory/3372-1-0x00000000004A0000-0x00000000004B8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bsllsvti.hkd.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1808-11-0x0000022C56420000-0x0000022C56442000-memory.dmp

memory/1808-12-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/1808-13-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/1808-14-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/1808-15-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/1808-16-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/1808-19-0x00007FF984460000-0x00007FF984F21000-memory.dmp

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

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

MD5 62623d22bd9e037191765d5083ce16a3
SHA1 4a07da6872672f715a4780513d95ed8ddeefd259
SHA256 95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010
SHA512 9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

MD5 9bc110200117a3752313ca2acaf8a9e1
SHA1 fda6b7da2e7b0175b391475ca78d1b4cf2147cd3
SHA256 c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb
SHA512 1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

MD5 eb1d189bf4c8d991692f8e911ddb0e22
SHA1 edf610592a788c266e63cff9b870005c9ac283a6
SHA256 45dbf3cf4ab714e4e344e081e4c08a4930a6815f80ce1f1650a2d434a2e1c63d
SHA512 d7150e51e5cb8faa0709c84614c2e29942308f198ebe2c4baba93cef0dc9edbeca8679aafe1b703d1cade30c4b47cafb7cdf3ecc59254293ae305e5f15be662a

memory/3372-58-0x00007FF984460000-0x00007FF984F21000-memory.dmp

memory/3372-59-0x00007FF984463000-0x00007FF984465000-memory.dmp

memory/3372-60-0x00007FF984460000-0x00007FF984F21000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\vowqfl.exe

MD5 dc660e6a531fe34bb0693133f8643495
SHA1 bf5525f87d4c6e8b4f7901b970ffaac01b86e439
SHA256 356d49abb58b6a65f341d438ead84bdd36151bd19545a5aac3e8e914e8c80f12
SHA512 8f249bb15798ec311543dff18edac26765e834c7931f0dd543076128270271f3d82da9052ef71bae939263fedc3fcb74405bcd196aa48a42daf6ed8c87cc0605

C:\Users\Admin\AppData\Local\Temp\vowqfl.exe

MD5 be9b8e7c29977c01f3122f1e5082f45d
SHA1 c53a253ac33ab33e94f3ad5e5200645b6391b779
SHA256 cb6384b855d46fe5678bb3d5d1fc77c800884f8345cb490e1aa71646e872d3ae
SHA512 91514128a7a488581372881a556b081ad920086fd43da84188033f0bd48f294199192b753ec691c2cb79072420b346f767d9cfb4ef2d119ca1e345d65df8dc34

C:\Users\Admin\AppData\Local\Temp\vowqfl.exe

MD5 c10801b6ce4f9f3f0282612ce562bc85
SHA1 cf8da8654dc71c7074ef552ddc1db82a5f477b3e
SHA256 b1cd5ea84ec864fc25a13df12bc2bf3bd92ac826583c0710f3201c81431f7794
SHA512 abf640fdf276b92d6594c194a7f2e207b080dfcdcd7e08a5c451fc6a6a3f2b0b3e15791097c6cafd44897312d7e4f6149809009e0d294bec5d5766fcd768c186

memory/3580-73-0x000001B168320000-0x000001B168D1C000-memory.dmp

memory/3372-74-0x000000001AA70000-0x000000001AA7C000-memory.dmp