Malware Analysis Report

2025-03-15 06:51

Sample ID 231226-fl62aaach5
Target 561e639b3bc1c5a944851c93ce58fbf8
SHA256 d0b0b202a25d0149c47a7d1a266234eefb2eac042d76fc36695b01b48cb610ad
Tags
orcus evasion 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

d0b0b202a25d0149c47a7d1a266234eefb2eac042d76fc36695b01b48cb610ad

Threat Level: Known bad

The file 561e639b3bc1c5a944851c93ce58fbf8 was found to be: Known bad.

Malicious Activity Summary

orcus evasion rat spyware stealer

Orcus

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Orcurs Rat Executable

Checks computer location settings

Executes dropped EXE

Identifies Wine through registry keys

Checks BIOS information in registry

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in System32 directory

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-26 04:58

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-26 04:58

Reported

2024-01-05 22:33

Platform

win7-20231129-en

Max time kernel

3s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe"

Signatures

Orcus

rat spyware stealer orcus

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe 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
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsInput.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsInput.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.InstallState C:\Windows\SysWOW64\WindowsInput.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe

"C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe"

C:\Windows\SysWOW64\WindowsInput.exe

"C:\Windows\SysWOW64\WindowsInput.exe"

C:\Program Files (x86)\Broker\Broker.exe

"C:\Program Files (x86)\Broker\Broker.exe"

C:\Windows\SysWOW64\WindowsInput.exe

"C:\Windows\SysWOW64\WindowsInput.exe" --install

C:\Program Files (x86)\Broker\Broker.exe

"C:\Program Files (x86)\Broker\Broker.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {D1F01780-7A09-474A-8498-CF5451E86B55} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]

Network

Country Destination Domain Proto
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp

Files

memory/824-0-0x0000000000010000-0x0000000000746000-memory.dmp

memory/824-1-0x0000000077E60000-0x0000000077E62000-memory.dmp

memory/824-3-0x0000000075730000-0x0000000075739000-memory.dmp

memory/824-2-0x00000000755E0000-0x000000007562A000-memory.dmp

memory/824-5-0x0000000074E70000-0x000000007555E000-memory.dmp

memory/824-10-0x0000000004F90000-0x0000000004FD0000-memory.dmp

memory/824-11-0x0000000002730000-0x000000000273E000-memory.dmp

memory/824-12-0x0000000002970000-0x00000000029CC000-memory.dmp

memory/824-9-0x0000000074CF0000-0x0000000074D70000-memory.dmp

memory/824-14-0x0000000074A10000-0x0000000074A27000-memory.dmp

memory/824-13-0x0000000074A30000-0x0000000074A3B000-memory.dmp

memory/824-16-0x00000000029E0000-0x00000000029F2000-memory.dmp

memory/824-26-0x0000000077820000-0x00000000779BD000-memory.dmp

memory/3040-29-0x0000000000B40000-0x0000000000B4C000-memory.dmp

memory/824-27-0x0000000076FA0000-0x0000000077023000-memory.dmp

memory/824-25-0x0000000077030000-0x00000000770D0000-memory.dmp

memory/824-31-0x00000000755E0000-0x000000007562A000-memory.dmp

memory/3040-32-0x000000001AFB0000-0x000000001B030000-memory.dmp

memory/3040-30-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

memory/2460-37-0x00000000002C0000-0x00000000002CC000-memory.dmp

memory/824-38-0x0000000074E70000-0x000000007555E000-memory.dmp

memory/2460-39-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

memory/3040-35-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

memory/824-48-0x0000000070060000-0x000000007046B000-memory.dmp

memory/824-49-0x0000000006430000-0x0000000006B66000-memory.dmp

memory/824-57-0x0000000077540000-0x000000007760C000-memory.dmp

memory/824-61-0x0000000074900000-0x000000007490E000-memory.dmp

memory/824-62-0x0000000077030000-0x00000000770D0000-memory.dmp

memory/824-64-0x0000000077820000-0x00000000779BD000-memory.dmp

memory/824-65-0x0000000070060000-0x000000007046B000-memory.dmp

memory/824-63-0x0000000000010000-0x0000000000746000-memory.dmp

memory/824-60-0x0000000074A10000-0x0000000074A27000-memory.dmp

memory/824-59-0x0000000074A30000-0x0000000074A3B000-memory.dmp

memory/824-58-0x0000000074E70000-0x000000007555E000-memory.dmp

memory/824-56-0x0000000075B70000-0x0000000075C60000-memory.dmp

memory/824-55-0x0000000074CF0000-0x0000000074D70000-memory.dmp

memory/824-54-0x0000000075730000-0x0000000075739000-memory.dmp

memory/824-53-0x00000000755E0000-0x000000007562A000-memory.dmp

memory/824-52-0x0000000076FA0000-0x0000000077023000-memory.dmp

memory/2620-51-0x00000000001C0000-0x00000000008F6000-memory.dmp

memory/824-17-0x0000000004B00000-0x0000000004B08000-memory.dmp

memory/824-15-0x0000000074900000-0x000000007490E000-memory.dmp

memory/824-8-0x0000000077540000-0x000000007760C000-memory.dmp

memory/824-7-0x0000000000010000-0x0000000000746000-memory.dmp

memory/824-6-0x0000000075B70000-0x0000000075C60000-memory.dmp

memory/824-4-0x0000000000010000-0x0000000000746000-memory.dmp

memory/2620-70-0x0000000074CA0000-0x0000000074D20000-memory.dmp

memory/2620-71-0x00000000001C0000-0x00000000008F6000-memory.dmp

memory/2620-74-0x0000000077540000-0x000000007760C000-memory.dmp

memory/2620-76-0x0000000074BF0000-0x0000000074C07000-memory.dmp

memory/2620-81-0x0000000074880000-0x00000000748FD000-memory.dmp

memory/2620-82-0x0000000074820000-0x000000007487F000-memory.dmp

memory/2620-80-0x0000000076FA0000-0x0000000077023000-memory.dmp

memory/2620-83-0x0000000004E70000-0x0000000004E88000-memory.dmp

memory/2620-85-0x0000000077030000-0x00000000770D0000-memory.dmp

memory/2460-84-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

memory/2620-79-0x0000000074BE0000-0x0000000074BEE000-memory.dmp

memory/2620-78-0x0000000004E90000-0x0000000004ED0000-memory.dmp

memory/2620-77-0x0000000000D50000-0x0000000000D9E000-memory.dmp

memory/2620-75-0x0000000074C10000-0x0000000074C1B000-memory.dmp

memory/2620-73-0x00000000001C0000-0x00000000008F6000-memory.dmp

memory/2620-72-0x0000000074E20000-0x000000007550E000-memory.dmp

memory/2620-69-0x0000000075620000-0x0000000075629000-memory.dmp

memory/2620-68-0x0000000075590000-0x00000000755DA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-26 04:58

Reported

2024-01-05 22:33

Platform

win10v2004-20231215-en

Max time kernel

38s

Max time network

172s

Command Line

"C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe"

Signatures

Orcus

rat spyware stealer orcus

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe 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
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
N/A N/A N/A N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsInput.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe

"C:\Users\Admin\AppData\Local\Temp\561e639b3bc1c5a944851c93ce58fbf8.exe"

C:\Windows\SysWOW64\WindowsInput.exe

"C:\Windows\SysWOW64\WindowsInput.exe" --install

C:\Windows\SysWOW64\WindowsInput.exe

"C:\Windows\SysWOW64\WindowsInput.exe"

C:\Program Files (x86)\Broker\Broker.exe

"C:\Program Files (x86)\Broker\Broker.exe"

C:\Program Files (x86)\Broker\Broker.exe

"C:\Program Files (x86)\Broker\Broker.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 74.208.235.52:27016 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 74.208.235.52:27016 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 74.208.235.52:27016 tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp
US 74.208.235.52:27016 tcp

Files

memory/5012-0-0x0000000000900000-0x0000000001036000-memory.dmp

memory/5012-1-0x00000000772E4000-0x00000000772E6000-memory.dmp

memory/5012-3-0x0000000000900000-0x0000000001036000-memory.dmp

memory/5012-2-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/5012-4-0x0000000000900000-0x0000000001036000-memory.dmp

memory/5012-5-0x00000000055E0000-0x00000000055F0000-memory.dmp

memory/5012-6-0x00000000053C0000-0x00000000053CE000-memory.dmp

memory/5012-7-0x0000000005490000-0x00000000054EC000-memory.dmp

memory/5012-8-0x0000000005BA0000-0x0000000006144000-memory.dmp

memory/5012-9-0x00000000055F0000-0x0000000005682000-memory.dmp

memory/5012-12-0x0000000005B40000-0x0000000005B62000-memory.dmp

memory/5012-11-0x0000000005AF0000-0x0000000005AF8000-memory.dmp

memory/5012-10-0x0000000005AE0000-0x0000000005AF2000-memory.dmp

C:\Windows\SysWOW64\WindowsInput.exe

MD5 e6fcf516d8ed8d0d4427f86e08d0d435
SHA1 c7691731583ab7890086635cb7f3e4c22ca5e409
SHA256 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512 c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

C:\Windows\SysWOW64\WindowsInput.exe.config

MD5 a2b76cea3a59fa9af5ea21ff68139c98
SHA1 35d76475e6a54c168f536e30206578babff58274
SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512 b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

memory/4788-26-0x00000000008F0000-0x00000000008FC000-memory.dmp

memory/4788-27-0x00007FFC49140000-0x00007FFC49C01000-memory.dmp

memory/4788-28-0x000000001B690000-0x000000001B6A0000-memory.dmp

memory/4788-30-0x0000000001260000-0x000000000129C000-memory.dmp

memory/4788-29-0x00000000010C0000-0x00000000010D2000-memory.dmp

memory/4788-34-0x00007FFC49140000-0x00007FFC49C01000-memory.dmp

memory/5012-36-0x0000000000900000-0x0000000001036000-memory.dmp

memory/4372-38-0x0000000019E80000-0x0000000019E90000-memory.dmp

memory/4372-37-0x00007FFC49140000-0x00007FFC49C01000-memory.dmp

memory/4372-39-0x000000001A3A0000-0x000000001A4AA000-memory.dmp

C:\Program Files (x86)\Broker\Broker.exe

MD5 f468b6a6dea51da0b6d3185f21609117
SHA1 4cc32c04c4d7b4874bb0b6f2f87b3e66fc903160
SHA256 1d674c903a6f6d2d7b11d444fb154b197ec3301385d3180de95a7d00c13bd3e7
SHA512 08cda1dd3afa5c8d03b782f28345b40d09c8b0ff6645717114ad23bc2fe48d92d9582e287e8784709e14c7e42b9a5641b1df60c2dfd5867335d7c793d8727b90

C:\Program Files (x86)\Broker\Broker.exe

MD5 52f200b5bac1ff2ce8849ba463af581a
SHA1 c8a5fcd34607a490fd01446e04f2479058101181
SHA256 183f7e31c05ae2f41636c0697f69b619edeb5f86bf585f933409fc669ade2e70
SHA512 aa2f3bb9302ba68f1a427d777ea24f495d732bd62fc32d75c8f81fa24e105a1e4a5589f695d704ea39cb571c7e56ab3ef1daa777a80d19487d79faea7622f933

memory/396-53-0x0000000000110000-0x0000000000846000-memory.dmp

memory/5012-55-0x0000000000900000-0x0000000001036000-memory.dmp

memory/5012-56-0x0000000074200000-0x00000000749B0000-memory.dmp

C:\Program Files (x86)\Broker\Broker.exe

MD5 3b0b723d98d35fb6a38f2c2bce8fd655
SHA1 7549fa9ad150b02e7fa5ef889c0f532c0400a8dc
SHA256 733fba55616523dc133efb89bfb5844c8b5326f035af67327889a0d2fd1fb6ad
SHA512 2ded7b4a0573c1e6ab6f1b9ff699a1ce283220fb3e4ac542db9367d275212e1d0f14564f4c5f1bb7e8e08d2bc3280fac4a4859f4e3c02c0b88d5c3f9c70695b9

memory/396-59-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/396-60-0x0000000000110000-0x0000000000846000-memory.dmp

memory/396-61-0x0000000000110000-0x0000000000846000-memory.dmp

memory/396-62-0x0000000005470000-0x0000000005480000-memory.dmp

memory/396-63-0x0000000005930000-0x000000000597E000-memory.dmp

C:\Program Files (x86)\Broker\Broker.exe

MD5 ab62b773a2cf4c3dbca74a7248a9ac47
SHA1 912f89afd46deaad37dfeb87d2be7a66f677eb89
SHA256 e63bb6d9fd15d39d09d39408f831535d55f8482f9426e83bef287ce6e037b6f7
SHA512 cac342ba666ae658d557450e5161a5868badd5f7536cc13cc2a568c593cb3e3c272041975ee98f161832ca93ed19d530647b6e1461945da052deba9a67e1e524

memory/1404-66-0x0000000000110000-0x0000000000846000-memory.dmp

memory/396-65-0x00000000059F0000-0x0000000005A08000-memory.dmp

memory/396-67-0x00000000062B0000-0x00000000062C0000-memory.dmp

memory/396-68-0x00000000064A0000-0x00000000064AA000-memory.dmp

memory/4372-70-0x00007FFC49140000-0x00007FFC49C01000-memory.dmp

memory/1404-72-0x0000000000110000-0x0000000000846000-memory.dmp

memory/1404-73-0x0000000000110000-0x0000000000846000-memory.dmp

memory/1404-71-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/4372-74-0x0000000019E80000-0x0000000019E90000-memory.dmp

memory/396-75-0x0000000000110000-0x0000000000846000-memory.dmp

memory/1404-79-0x0000000000110000-0x0000000000846000-memory.dmp

memory/1404-80-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/396-82-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/396-83-0x0000000005470000-0x0000000005480000-memory.dmp