Malware Analysis Report

2024-11-16 13:34

Sample ID 240526-s48daabd9y
Target eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8
SHA256 eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8
Tags
xworm execution persistence 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8

Threat Level: Known bad

The file eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8 was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm family

Xworm

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 15:41

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

2024-05-26 15:41

Reported

2024-05-26 15:44

Platform

win7-20240508-en

Max time kernel

118s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\Expensive 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\Expensive 3.1.exe" C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2020 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2020 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe

"C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.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\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.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\Roaming\Expensive 3.1.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expensive 3.1.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 loss-winners.gl.at.ply.gg udp
US 147.185.221.19:61007 loss-winners.gl.at.ply.gg tcp

Files

memory/2020-0-0x000007FEF5373000-0x000007FEF5374000-memory.dmp

memory/2020-1-0x0000000000FF0000-0x0000000001006000-memory.dmp

memory/2888-6-0x0000000002A70000-0x0000000002AF0000-memory.dmp

memory/2888-7-0x000000001B730000-0x000000001BA12000-memory.dmp

memory/2888-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

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

MD5 83d62cd3e7ecd2756a600f52bcd240a0
SHA1 c2828820cebfb08ce448c65c9ee6e95bac62bec6
SHA256 f7615e2baec966351b7020ca92c850382d34aded5302ef58f34fce71326e91a2
SHA512 67ad7ecfceba132b4f745c7e39f3d4580a1677372ce61c64ef179a72eb82e715daddd6379325a9d7183b4cd4479e3246ec52861c83bc816ca5f664b949e14399

memory/2804-14-0x000000001B4C0000-0x000000001B7A2000-memory.dmp

memory/2804-15-0x00000000029A0000-0x00000000029A8000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/2020-28-0x000000001B260000-0x000000001B2E0000-memory.dmp

memory/2020-29-0x000007FEF5373000-0x000007FEF5374000-memory.dmp

memory/2020-30-0x000000001B260000-0x000000001B2E0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 15:41

Reported

2024-05-26 15:44

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Expensive 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\Expensive 3.1.exe" C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1436 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 5088 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 5088 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1436 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe

"C:\Users\Admin\AppData\Local\Temp\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.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\eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'eb75a771291082654ce1c0ef9feb1bf6cd30da8b85b1e342df0bd3b9af35a3b8.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\Roaming\Expensive 3.1.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expensive 3.1.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 loss-winners.gl.at.ply.gg udp
US 147.185.221.19:61007 loss-winners.gl.at.ply.gg tcp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 252.15.104.51.in-addr.arpa udp

Files

memory/1436-0-0x00007FF9D9343000-0x00007FF9D9345000-memory.dmp

memory/1436-1-0x0000000000360000-0x0000000000376000-memory.dmp

memory/628-2-0x000002827F240000-0x000002827F262000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wpoqsicp.rh0.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/628-12-0x00007FF9D9340000-0x00007FF9D9E01000-memory.dmp

memory/628-13-0x00007FF9D9340000-0x00007FF9D9E01000-memory.dmp

memory/628-14-0x00007FF9D9340000-0x00007FF9D9E01000-memory.dmp

memory/628-17-0x00007FF9D9340000-0x00007FF9D9E01000-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 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

MD5 eb1ad317bd25b55b2bbdce8a28a74a94
SHA1 98a3978be4d10d62e7411946474579ee5bdc5ea6
SHA256 9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
SHA512 d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

MD5 60945d1a2e48da37d4ce8d9c56b6845a
SHA1 83e80a6acbeb44b68b0da00b139471f428a9d6c1
SHA256 314b91c00997034d6e015f40230d90ebbf57de5dc938b62c1a214d591793dbe3
SHA512 5d068f1d6443e26ae3cad1c80f969e50e5860967b314153c4d3b6efd1cfa39f0907c6427bec7fa43db079f258b6357e4e9a1b0b1a36b1481d2049ea0e67909ed

memory/1436-53-0x00007FF9D9340000-0x00007FF9D9E01000-memory.dmp

memory/1436-54-0x00007FF9D9343000-0x00007FF9D9345000-memory.dmp

memory/1436-55-0x00007FF9D9340000-0x00007FF9D9E01000-memory.dmp