Malware Analysis Report

2024-11-16 13:30

Sample ID 240621-zzn76s1gqg
Target XwormLoader.exe
SHA256 3e4cbe1810496aff2ef544d0aa0b5f8d1c69e2a4e86c21921348ede7a9db3967
Tags
xworm execution rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3e4cbe1810496aff2ef544d0aa0b5f8d1c69e2a4e86c21921348ede7a9db3967

Threat Level: Known bad

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

Malicious Activity Summary

xworm execution rat trojan

Xworm

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Executes dropped EXE

Checks computer location settings

.NET Reactor proctector

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 21:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 21:09

Reported

2024-06-21 21:10

Platform

win10v2004-20240611-en

Max time kernel

18s

Max time network

21s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

.NET Reactor proctector

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious behavior: AddClipboardFormatListener

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1576 wrote to memory of 4368 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 1576 wrote to memory of 4368 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 1576 wrote to memory of 4292 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
PID 1576 wrote to memory of 4292 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
PID 1576 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Windows\system32\cmd.exe
PID 1576 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe C:\Windows\system32\cmd.exe
PID 3020 wrote to memory of 2316 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 3020 wrote to memory of 2316 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 4368 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 3588 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 3588 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4368 wrote to memory of 3968 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\schtasks.exe
PID 4368 wrote to memory of 3968 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

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

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

C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe

"C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4C0D.tmp.bat""

C:\Windows\system32\timeout.exe

timeout 3

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\svchost.exe'

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

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

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'

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

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

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
BE 2.17.107.114:443 www.bing.com tcp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 114.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 testarosa.duckdns.org udp
DE 94.131.109.101:7110 testarosa.duckdns.org tcp
US 8.8.8.8:53 udp

Files

memory/1576-0-0x00007FFA5B815000-0x00007FFA5B816000-memory.dmp

memory/1576-1-0x00007FFA5B560000-0x00007FFA5BF01000-memory.dmp

memory/1576-2-0x00007FFA5B560000-0x00007FFA5BF01000-memory.dmp

memory/1576-3-0x000000001C040000-0x000000001C0E6000-memory.dmp

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

MD5 4b90399888a12fb85ccc3d0190d5a1d3
SHA1 3326c027bac28b9480b0c7f621481a6cc033db4e
SHA256 cede03d0ef98d200bd5b68f6ca4e0d74e2a62fc430a38083663c3031dbb1c77f
SHA512 899ec2df2f5d70716ad5d0686bfe0a6c66ccbcf7f0485efbdfc0615f90b3526cd3d31069fa66c7c6ae8bba6ce92200836c50da40a3731888b7326b970d93216a

memory/4368-16-0x00000000005F0000-0x000000000061A000-memory.dmp

memory/4368-17-0x00007FFA58843000-0x00007FFA58845000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe

MD5 db51a102eab752762748a2dec8f7f67a
SHA1 194688ec1511b83063f7b0167ae250764b7591d1
SHA256 93e5e7f018053c445c521b010caff89e61f61743635db3500aad32d6e495abb2
SHA512 fb2fb6605a17fedb65e636cf3716568e85b8ea423c23e0513eb87f3a3441e2cabc4c3e6346225a9bf7b81e97470f3ab516feea649a7afb5cdf02faff8d7f09a5

memory/1576-29-0x000000001D0D0000-0x000000001D59E000-memory.dmp

memory/4292-33-0x00007FFA58840000-0x00007FFA59301000-memory.dmp

memory/4292-35-0x0000028B27FF0000-0x0000028B28ED8000-memory.dmp

memory/1576-34-0x00007FFA5B560000-0x00007FFA5BF01000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp4C0D.tmp.bat

MD5 c3b35356ee4f9893fe6d1dbbb9b9160f
SHA1 42c97e1ffaa782ba9d5cd44b3d25ce6796b10513
SHA256 0fd0506609dbdec57a2e43eec26aba7e572193971d79e5398f3fb8094de14cf7
SHA512 291d2c27597db3cb0ecb2514d59efbdace1841d83e36915e298153a37754431a14d2469aa9e963fed1471a209263ea545f3712e32a8ef0fd63511a19afd7dad9

memory/2420-42-0x000001E5DA420000-0x000001E5DA442000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3upmnyqt.ugv.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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 6d42b6da621e8df5674e26b799c8e2aa
SHA1 ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA256 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
SHA512 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

MD5 d079b2f414515e7536eab8def3f59752
SHA1 90cb03125d60dd194a44fe960df655d4a6268d10
SHA256 f21e430cda6fdfc4fa1d51eadaea666e9e6aa92898fda11c9f3d54de02dee94a
SHA512 022c5772b8203082037c7b4c433183f7593f126bc9138f512b5890211953fcd5d995bf05af905d0d597f5f84426dc072fa4964b5b76237856a18dc22bdec9eb9

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

MD5 fe250435f89d0588c926e3ac356c5bde
SHA1 7c12ea4a4f280a4ab1878dcb0bd949c127cde11e
SHA256 ad2e8837bb08c3e90100c9dc420fda2fa98d43d1c5908d9cb1d7ee7ee40e6371
SHA512 8ab365fb4b2a5ffe58e5c606b69319962ae0d5ef0d8e831df8b68f569f64272a0ddce53863e82fc6e2e502a5ee617fdd8963bcd32b12de21ad5267d6fdcf173c

memory/4292-84-0x00007FFA58840000-0x00007FFA59301000-memory.dmp