Malware Analysis Report

2024-11-30 20:56

Sample ID 241119-sah7asxdjb
Target test2.exe
SHA256 31a480c85705f4c532ecc57d8a66d8658ecc18f43115f67b2a65d441a9b6c6a0
Tags
bruteratel latrodectus backdoor loader
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

31a480c85705f4c532ecc57d8a66d8658ecc18f43115f67b2a65d441a9b6c6a0

Threat Level: Known bad

The file test2.exe was found to be: Known bad.

Malicious Activity Summary

bruteratel latrodectus backdoor loader

Latrodectus loader

Brute Ratel C4

Bruteratel family

Detect BruteRatel badger

Detects Latrodectus

Latrodectus family

Loads dropped DLL

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Modifies system certificate store

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-19 14:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-19 14:55

Reported

2024-11-19 14:57

Platform

win7-20240903-en

Max time kernel

144s

Max time network

150s

Command Line

C:\Windows\Explorer.EXE

Signatures

Brute Ratel C4

backdoor bruteratel

Bruteratel family

bruteratel

Detect BruteRatel badger

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

Detects Latrodectus

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

Latrodectus family

latrodectus

Latrodectus loader

loader latrodectus

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 0400000001000000100000000cd2f9e0da1773e9ed864da5e370e74e14000000010000001400000079b459e67bb6e5e40173800888c81a58f6e99b6e030000000100000014000000cabd2a79a1076a31f21d253635cb039d4329a5e80f00000001000000200000003f0411ede9c4477057d57e57883b1f205b20cdc0f3263129b1ee0269a2678f631900000001000000100000002fe1f70bb05d7c92335bc5e05b984da620000000010000006f0500003082056b30820353a0030201020211008210cfb0d240e3594463e0bb63828b00300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3135303630343131303433385a170d3335303630343131303433385a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f7420583130820222300d06092a864886f70d01010105000382020f003082020a0282020100ade82473f41437f39b9e2b57281c87bedcb7df38908c6e3ce657a078f775c2a2fef56a6ef6004f28dbde68866c4493b6b163fd14126bbf1fd2ea319b217ed1333cba48f5dd79dfb3b8ff12f1219a4bc18a8671694a66666c8f7e3c70bfad292206f3e4c0e680aee24b8fb7997e94039fd347977c99482353e838ae4f0a6f832ed149578c8074b6da2fd0388d7b0370211b75f2303cfa8faeddda63abeb164fc28e114b7ecf0be8ffb5772ef4b27b4ae04c12250c708d0329a0e15324ec13d9ee19bf10b34a8c3f89a36151deac870794f46371ec2ee26f5b9881e1895c34796c76ef3b906279e6dba49a2f26c5d010e10eded9108e16fbb7f7a8f7c7e50207988f360895e7e237960d36759efb0e72b11d9bbc03f94905d881dd05b42ad641e9ac0176950a0fd8dfd5bd121f352f28176cd298c1a80964776e4737baceac595e689d7f72d689c50641293e593edd26f524c911a75aa34c401f46a199b5a73a516e863b9e7d72a712057859ed3e5178150b038f8dd02f05b23e7b4a1c4b730512fcc6eae050137c439374b3ca74e78e1f0108d030d45b7136b407bac130305c48b7823b98a67d608aa2a32982ccbabd83041ba2830341a1d605f11bc2b6f0a87c863b46a8482a88dc769a76bf1f6aa53d198feb38f364dec82b0d0a28fff7dbe21542d422d0275de179fe18e77088ad4ee6d98b3ac6dd27516effbc64f533434f0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e0416041479b459e67bb6e5e40173800888c81a58f6e99b6e300d06092a864886f70d01010b05000382020100551f58a9bcb2a850d00cb1d81a6920272908ac61755c8a6ef882e5692fd5f6564bb9b8731059d321977ee74c71fbb2d260ad39a80bea17215685f1500e59ebcee059e9bac915ef869d8f8480f6e4e99190dc179b621b45f06695d27c6fc2ea3bef1fcfcbd6ae27f1a9b0c8aefd7d7e9afa2204ebffd97fea912b22b1170e8ff28a345b58d8fc01c954b9b826cc8a8833894c2d843c82dfee965705ba2cbbf7c4b7c74e3b82be31c822737392d1c280a43939103323824c3c9f86b255981dbe29868c229b9ee26b3b573a82704ddc09c789cb0a074d6ce85d8ec9efceabc7bbb52b4e45d64ad026cce572ca086aa595e315a1f7a4edc92c5fa5fbffac28022ebed77bbbe3717b9016d3075e46537c3707428cd3c4969cd599b52ae0951a8048ae4c3907cecc47a452952bbab8fbadd233537de51d4d6dd5a1b1c7426fe64027355ca328b7078de78d3390e7239ffb509c796c46d5b415b3966e7e9b0c963ab8522d3fd65be1fb08c284fe24a8a389daac6ae1182ab1a843615bd31fdc3b8d76f22de88d75df17336c3d53fb7bcb415fffdca2d06138e196b8ac5d8b37d775d533c09911ae9d41c1727584be0241425f67244894d19b27be073fb9b84f817451e17ab7ed9d23e2bee0d52804133c31039edd7a6c8fc60718c67fde478e3f289e0406cfa5543477bdec899be91743df5bdb5ffe8e1e57a2cd409d7e6222dade1827 C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8 C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2364 wrote to memory of 1196 N/A C:\Users\Admin\AppData\Local\Temp\test2.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\test2.exe

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 xomamox.com udp
NL 80.66.76.106:8877 xomamox.com tcp
US 8.8.8.8:53 r11.o.lencr.org udp
GB 2.18.190.80:80 r11.o.lencr.org tcp
NL 80.66.76.106:8877 xomamox.com tcp
US 8.8.8.8:53 crl.microsoft.com udp
GB 88.221.134.83:80 crl.microsoft.com tcp
US 8.8.8.8:53 www.microsoft.com udp
US 23.192.22.93:80 www.microsoft.com tcp
NL 80.66.76.106:8877 xomamox.com tcp
US 8.8.8.8:53 waffaffa.com udp
RU 45.143.166.83:8877 waffaffa.com tcp

Files

\Users\Admin\AppData\Local\Temp\hello_world.dll

MD5 86b57c9deafed093d4b47b03823b4d14
SHA1 47947da463dd6f4ecf61ae960235a35144e903a8
SHA256 f8e3eef1fda5969a7aabcc8fb5cc9f5fe245bbf6cc8e480459977b8e91eab9bd
SHA512 5f855ed0a3ecf561c45608d7f4579d6e4b1f1953863e97e0b5fea1f33b38d0e03fef16207d88864d2d936a4e65b677cd259ec248dbf06447b50f9e0488acead3

memory/2364-5-0x0000000001B90000-0x0000000001BDC000-memory.dmp

memory/2364-4-0x0000000000320000-0x000000000035E000-memory.dmp

memory/2364-28-0x000007FFFFF80000-0x000007FFFFF95000-memory.dmp

memory/2364-32-0x000007FFFFF40000-0x000007FFFFF41000-memory.dmp

memory/2364-31-0x000007FFFFF50000-0x000007FFFFF51000-memory.dmp

memory/2364-30-0x000007FFFFF60000-0x000007FFFFF61000-memory.dmp

memory/2364-29-0x000007FFFFF70000-0x000007FFFFF71000-memory.dmp

memory/2364-27-0x000007FFFFFA0000-0x000007FFFFFA1000-memory.dmp

memory/1196-34-0x0000000002D00000-0x0000000002D15000-memory.dmp

memory/1196-35-0x0000000002D00000-0x0000000002D15000-memory.dmp

memory/1196-33-0x0000000002D00000-0x0000000002D15000-memory.dmp

memory/1196-36-0x0000000002D00000-0x0000000002D15000-memory.dmp

memory/2364-39-0x0000000001B90000-0x0000000001BDC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-19 14:55

Reported

2024-11-19 14:57

Platform

win10v2004-20241007-en

Max time kernel

129s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

Signatures

Brute Ratel C4

backdoor bruteratel

Bruteratel family

bruteratel

Detect BruteRatel badger

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\test2.exe

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 waffaffa.com udp
RU 45.143.166.83:8877 waffaffa.com tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 xomamox.com udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
RU 45.143.166.83:8877 waffaffa.com tcp

Files

C:\Users\Admin\AppData\Local\Temp\hello_world.dll

MD5 86b57c9deafed093d4b47b03823b4d14
SHA1 47947da463dd6f4ecf61ae960235a35144e903a8
SHA256 f8e3eef1fda5969a7aabcc8fb5cc9f5fe245bbf6cc8e480459977b8e91eab9bd
SHA512 5f855ed0a3ecf561c45608d7f4579d6e4b1f1953863e97e0b5fea1f33b38d0e03fef16207d88864d2d936a4e65b677cd259ec248dbf06447b50f9e0488acead3

memory/2292-4-0x0000000002880000-0x00000000028BE000-memory.dmp

memory/2292-5-0x00000000028C0000-0x000000000290C000-memory.dmp

memory/2292-14-0x00000000028C0000-0x000000000290C000-memory.dmp