Malware Analysis Report

2024-11-16 13:35

Sample ID 240526-sym56abc2w
Target Expensive 3.1.exe
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 Expensive 3.1.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm family

Contains code to disable Windows Defender

Xworm

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 15:32

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 15:32

Reported

2024-05-26 15:33

Platform

win7-20240221-en

Max time kernel

51s

Max time network

76s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe"

Signatures

Contains code to disable Windows Defender

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

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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Expensive 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\Expensive 3.1.exe" C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.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\Expensive 3.1.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\Expensive 3.1.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2876 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 3048 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 3048 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 3048 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2376 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2376 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2876 wrote to memory of 2376 N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe

"C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.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\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'

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/2876-0-0x000007FEF4E43000-0x000007FEF4E44000-memory.dmp

memory/2876-1-0x00000000003B0000-0x00000000003C6000-memory.dmp

memory/2700-6-0x0000000002600000-0x0000000002680000-memory.dmp

memory/2700-7-0x000000001B2E0000-0x000000001B5C2000-memory.dmp

memory/2700-8-0x00000000024E0000-0x00000000024E8000-memory.dmp

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

MD5 fe75d9bc4a28e7df4f3ab130662c970d
SHA1 97e36509a5af310c512515cb384b96e5e1e4aeba
SHA256 edb646c044adaa19104d60bd01a2a28c99b24cc82cd70c68ccb4b9a8879ef365
SHA512 454fb36495b1927fc0d9b5265afd7dd53170dbb79c2d10fb0e467a054e75543cbdb16c4c5e24a3005aa24d9d490a9f45c53895b5fa5d995f319ec5f42de06d4d

memory/2728-14-0x000000001B290000-0x000000001B572000-memory.dmp

memory/2728-15-0x0000000002420000-0x0000000002428000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/2876-28-0x0000000001F60000-0x0000000001FE0000-memory.dmp

memory/2876-29-0x000007FEF4E43000-0x000007FEF4E44000-memory.dmp

memory/2876-30-0x0000000001F60000-0x0000000001FE0000-memory.dmp

memory/2876-31-0x0000000002020000-0x000000000202E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 15:32

Reported

2024-05-26 15:34

Platform

win10v2004-20240426-en

Max time kernel

143s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Expensive 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\Expensive 3.1.exe" C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.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\Expensive 3.1.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\Expensive 3.1.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.exe

"C:\Users\Admin\AppData\Local\Temp\Expensive 3.1.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\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'

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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 147.185.221.19:61007 loss-winners.gl.at.ply.gg tcp

Files

memory/1840-0-0x00007FFB9B593000-0x00007FFB9B595000-memory.dmp

memory/1840-1-0x0000000000E90000-0x0000000000EA6000-memory.dmp

memory/2164-2-0x000001E0ED9E0000-0x000001E0EDA02000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f1lodfbn.t4s.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2164-12-0x00007FFB9B590000-0x00007FFB9C051000-memory.dmp

memory/2164-13-0x00007FFB9B590000-0x00007FFB9C051000-memory.dmp

memory/2164-14-0x00007FFB9B590000-0x00007FFB9C051000-memory.dmp

memory/2164-17-0x00007FFB9B590000-0x00007FFB9C051000-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 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

MD5 22310ad6749d8cc38284aa616efcd100
SHA1 440ef4a0a53bfa7c83fe84326a1dff4326dcb515
SHA256 55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
SHA512 2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

MD5 3db1c0d23daacf01eb99125ccc2787d3
SHA1 0849528de1ba411279231d635d8f39d54cc829d2
SHA256 bceb96f5c3d31447980eb8cd891bba75b3e5b6eb60abf4d829fc13cd8faf2582
SHA512 3d84635a3395bca1d91ce182ccfb9e38c8da87ad678704673a72d580e4251cedc5a6b2a89040a172a5687b67952e74a13673bd115bce7bdabaed06f89323de5b

memory/1840-53-0x00007FFB9B590000-0x00007FFB9C051000-memory.dmp

memory/1840-54-0x00007FFB9B593000-0x00007FFB9B595000-memory.dmp

memory/1840-55-0x00007FFB9B590000-0x00007FFB9C051000-memory.dmp

memory/1840-56-0x00000000031E0000-0x00000000031EC000-memory.dmp