Malware Analysis Report

2025-03-15 06:45

Sample ID 250121-bg5kfaylbr
Target e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee
SHA256 e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee
Tags
новый тег orcus discovery rat spyware stealer
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

e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee

Threat Level: Known bad

The file e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee was found to be: Known bad.

Malicious Activity Summary

новый тег orcus discovery rat spyware stealer

Orcurs Rat Executable

Orcus main payload

Orcus

Orcus family

Orcurs Rat Executable

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-21 01:07

Signatures

Orcurs Rat Executable

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

Orcus family

orcus

Orcus main payload

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-21 01:07

Reported

2025-01-21 01:10

Platform

win7-20240903-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Orcus main payload

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

Orcurs Rat Executable

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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2316 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2316 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2316 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2316 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2664 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2664 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2664 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2664 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2004 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2004 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2004 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 2004 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 1380 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 1380 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 1380 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe
PID 2636 wrote to memory of 1380 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe

"C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe"

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

"C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {C8886950-E92C-4B26-8AA7-6442E2A10A82} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 36345.client.sudorat.top udp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
N/A 127.0.0.1:1111 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp

Files

memory/2316-0-0x000000007457E000-0x000000007457F000-memory.dmp

memory/2316-1-0x0000000000B00000-0x0000000000DFE000-memory.dmp

memory/2316-2-0x0000000000470000-0x000000000047E000-memory.dmp

memory/2316-3-0x0000000074570000-0x0000000074C5E000-memory.dmp

memory/2316-4-0x0000000004410000-0x000000000446C000-memory.dmp

memory/2316-5-0x00000000009A0000-0x00000000009B2000-memory.dmp

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

MD5 1abde3259b140132a71ac457e38ea5fe
SHA1 1410f1c403857152d320edf73d79b1d5dca54a26
SHA256 e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee
SHA512 d4bbca63a28c5bd209ff9908bbc3d9390148e3246ac6e430faa3975199dc1d043501b713ae12c276a6734746b8abbfe1733c61761e26f25237cb270c766b4688

memory/2856-17-0x00000000010D0000-0x00000000013CE000-memory.dmp

memory/2856-19-0x0000000074570000-0x0000000074C5E000-memory.dmp

memory/2316-16-0x0000000074570000-0x0000000074C5E000-memory.dmp

memory/2856-20-0x0000000000480000-0x0000000000492000-memory.dmp

memory/2856-21-0x00000000009A0000-0x00000000009EE000-memory.dmp

memory/2856-18-0x0000000074570000-0x0000000074C5E000-memory.dmp

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe.config

MD5 a2b76cea3a59fa9af5ea21ff68139c98
SHA1 35d76475e6a54c168f536e30206578babff58274
SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512 b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

memory/2856-22-0x0000000000A50000-0x0000000000A68000-memory.dmp

memory/2856-23-0x0000000000E60000-0x0000000000E70000-memory.dmp

memory/2856-25-0x0000000074570000-0x0000000074C5E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-21 01:07

Reported

2025-01-21 01:10

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Orcus main payload

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

Orcurs Rat Executable

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe

"C:\Users\Admin\AppData\Local\Temp\e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee.exe"

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

"C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe"

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 36345.client.sudorat.top udp
US 8.8.8.8:53 167.173.78.104.in-addr.arpa udp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
N/A 127.0.0.1:1111 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
RU 31.44.184.52:36345 tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
RU 31.44.184.52:36345 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 185.37.62.158:36345 36345.client.sudorat.top tcp
RU 31.44.184.52:36345 tcp

Files

memory/5036-0-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

memory/5036-1-0x0000000000A60000-0x0000000000D5E000-memory.dmp

memory/5036-2-0x00000000030A0000-0x00000000030AE000-memory.dmp

memory/5036-3-0x0000000005710000-0x000000000576C000-memory.dmp

memory/5036-4-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/5036-5-0x0000000005F20000-0x00000000064C4000-memory.dmp

memory/5036-6-0x0000000005970000-0x0000000005A02000-memory.dmp

memory/5036-7-0x0000000005E50000-0x0000000005E62000-memory.dmp

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe

MD5 1abde3259b140132a71ac457e38ea5fe
SHA1 1410f1c403857152d320edf73d79b1d5dca54a26
SHA256 e27df41307c41ff81573947f0183d6e82aa60165a52e294fabf09aaea0b3a3ee
SHA512 d4bbca63a28c5bd209ff9908bbc3d9390148e3246ac6e430faa3975199dc1d043501b713ae12c276a6734746b8abbfe1733c61761e26f25237cb270c766b4688

C:\Users\Admin\AppData\Roaming\multiflowerprovider\cdnsecure.exe.config

MD5 a2b76cea3a59fa9af5ea21ff68139c98
SHA1 35d76475e6a54c168f536e30206578babff58274
SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512 b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

memory/1856-24-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/5036-23-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/1856-25-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/1856-26-0x0000000005C70000-0x0000000005C82000-memory.dmp

memory/1856-27-0x0000000006130000-0x000000000617E000-memory.dmp

memory/1856-29-0x00000000068E0000-0x00000000068F8000-memory.dmp

memory/1560-30-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/1856-31-0x0000000006920000-0x0000000006930000-memory.dmp

memory/1560-33-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/1856-32-0x0000000006EE0000-0x0000000006EEA000-memory.dmp

memory/1560-35-0x0000000074C20000-0x00000000753D0000-memory.dmp

memory/1856-36-0x0000000074C20000-0x00000000753D0000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\cdnsecure.exe.log

MD5 0672db2ef13237d5cb85075ff4915942
SHA1 ad8b4d3eb5e40791c47d48b22e273486f25f663f
SHA256 0a933408890369b5a178f9c30aa93d2c94f425650815cf8e8310de4e90a3b519
SHA512 84ad10ba5b695567d33a52f786405a5544aa49d8d23631ba9edf3afa877c5dbd81570d15bcf74bce5d9fb1afad2117d0a4ef913b396c0d923afefe615619c84b