Malware Analysis Report

2024-11-16 13:39

Sample ID 240530-mahb4seh82
Target f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a
SHA256 f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a

Threat Level: Known bad

The file f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Xworm

Xworm family

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Drops startup file

Looks up external IP address via web service

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 10:15

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

2024-05-30 10:15

Reported

2024-05-30 10:18

Platform

win7-20240221-en

Max time kernel

148s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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\XClient.lnk C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3020 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3020 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe

"C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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\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'

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp

Files

memory/3020-0-0x000007FEF54C3000-0x000007FEF54C4000-memory.dmp

memory/3020-1-0x00000000008D0000-0x00000000008EA000-memory.dmp

memory/3020-2-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

memory/2860-7-0x0000000002DF0000-0x0000000002E70000-memory.dmp

memory/2860-8-0x000000001B540000-0x000000001B822000-memory.dmp

memory/2860-9-0x0000000001E80000-0x0000000001E88000-memory.dmp

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

MD5 74f5d5710542fd5e4c33928cb1d465eb
SHA1 73a7a1136214718bde9f127b5421b40a4a7e1cf3
SHA256 981a8b01803bd1901c8dd9042215a31f1a72465dd193818ab58abc9ec9a6c701
SHA512 9784c4fa5b5616a3aeb48319e5f5a720d9ddceb91d61391672eee7d06f00327ff0a6f0ac5e63829e2578171638fbeac0d9574e39d9ca0a082578ca69cfebd0a3

memory/2828-15-0x000000001B580000-0x000000001B862000-memory.dmp

memory/2828-16-0x0000000001F70000-0x0000000001F78000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/3020-32-0x000007FEF54C3000-0x000007FEF54C4000-memory.dmp

memory/3020-33-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 10:15

Reported

2024-05-30 10:18

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 900 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 540 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 540 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe

"C:\Users\Admin\AppData\Local\Temp\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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\f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'f691af29880a23440b65782116124cbdfe8ea9d58ed103f33f15a89b0952b13a.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\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'

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
N/A 127.0.0.1:4099 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
N/A 127.0.0.1:4099 tcp
US 8.8.8.8:53 8.173.189.20.in-addr.arpa udp

Files

memory/900-0-0x00007FFFBA453000-0x00007FFFBA455000-memory.dmp

memory/900-1-0x00000000005E0000-0x00000000005FA000-memory.dmp

memory/900-2-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kz2idt1e.4b1.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2576-13-0x00000115A9080000-0x00000115A90A2000-memory.dmp

memory/2576-12-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

memory/2576-14-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

memory/2576-15-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

memory/2576-18-0x00007FFFBA450000-0x00007FFFBAF11000-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 2e907f77659a6601fcc408274894da2e
SHA1 9f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA256 385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
SHA512 34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

MD5 b1a1d8b05525b7b0c5babfd80488c1f2
SHA1 c85bbd6b7d0143676916c20fd52720499c2bb5c6
SHA256 adad192fc86c2f939fd3f70cb9ad323139a4e100f7c90b4454e2c53bdbc9b705
SHA512 346c6513c1373bab58439e37d3f75de1c5c587d7eb27076cf696e885a027b3b38d70b585839d1a2e7f2270cdcf0dac8c1fdff799f3b1158242ae9e3364c2a06e

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

MD5 b4b6d4cc52b5a3a71149b1f33d94d5de
SHA1 97d3dbdd24919eab70e3b14c68797cefc07e90dd
SHA256 da8c02ce00d5b1e6d4c3667465c7bbc14d7cd5227eb634f3d9690afd488267fe
SHA512 fc894f03709b83df7d2fca2779e1e60549078b67bcdbff0b61c8e5a802982210ae971309c1f92577573299288963ab5c95c6b38cbaedf53dc6062812c57a97af

memory/900-57-0x00007FFFBA453000-0x00007FFFBA455000-memory.dmp

memory/900-58-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp