Malware Analysis Report

2025-01-22 15:04

Sample ID 240209-bdzj1sde8w
Target c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127
SHA256 c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127
Tags
penis orcus 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

c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127

Threat Level: Known bad

The file c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127 was found to be: Known bad.

Malicious Activity Summary

penis orcus rat spyware stealer

Orcurs Rat Executable

Orcus family

Orcus

Orcus main payload

Orcurs Rat Executable

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Drops file in System32 directory

Drops file in Program Files directory

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-09 01:02

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

2024-02-09 01:02

Reported

2024-02-09 01:04

Platform

win7-20231215-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"

Signatures

Orcus

rat spyware stealer 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

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.InstallState C:\Windows\SysWOW64\WindowsInput.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\System\System C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File opened for modification C:\Program Files (x86)\System\System C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Program Files (x86)\System\System.config C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_Classes\Local Settings C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2444 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 2444 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 2444 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 2444 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 3008 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2552 wrote to memory of 3008 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2552 wrote to memory of 3008 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2552 wrote to memory of 3008 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe

"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Program Files (x86)\System\System

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe

"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Program Files (x86)\System\System"

Network

N/A

Files

memory/2444-0-0x00000000012F0000-0x00000000013DA000-memory.dmp

memory/2444-1-0x0000000074970000-0x000000007505E000-memory.dmp

memory/2444-2-0x0000000004AB0000-0x0000000004AF0000-memory.dmp

memory/2444-3-0x00000000003B0000-0x00000000003BE000-memory.dmp

memory/2444-4-0x0000000000D10000-0x0000000000D6C000-memory.dmp

memory/2444-5-0x0000000000410000-0x0000000000422000-memory.dmp

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

MD5 a2b76cea3a59fa9af5ea21ff68139c98
SHA1 35d76475e6a54c168f536e30206578babff58274
SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512 b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

C:\Windows\SysWOW64\WindowsInput.exe

MD5 e6fcf516d8ed8d0d4427f86e08d0d435
SHA1 c7691731583ab7890086635cb7f3e4c22ca5e409
SHA256 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512 c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

memory/2024-14-0x0000000000EF0000-0x0000000000EFC000-memory.dmp

memory/2024-15-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

memory/2024-16-0x000000001A720000-0x000000001A7A0000-memory.dmp

memory/2024-19-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

memory/2668-21-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmp

memory/2444-27-0x0000000074970000-0x000000007505E000-memory.dmp

C:\Program Files (x86)\System\System

MD5 484c14a70d5a26ebdadde4ad5e03779e
SHA1 0e6a5464eb92561eb007f5bd802083c9c6ec1124
SHA256 c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127
SHA512 faf234088dce7aa431407bc01777fefd5c67ae497ee63468257cc4e8f4bbc5394b8c2e83cf19ef286b5fd0d74a7dd44a133656a454ec3aaa7cf62ac774e2de8e

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

MD5 fff30308c896430d7fd8018955049814
SHA1 d378a39f59c650582d1a7203e108caa8098a2d22
SHA256 172e1ab7aef4cc7d445538c2553257e678788b67c06ec8be1bf6f69c77bfe251
SHA512 12499a91c9245c3e5ac2cfcda45683ed82928f1c409450e51a6be482e7d7dacca65ccee95a7d6ff0403ee1f0fe9ed5e002bd30f70792916f010aee21b84ffb25

memory/2668-46-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-09 01:02

Reported

2024-02-09 01:05

Platform

win10v2004-20231215-en

Max time kernel

90s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"

Signatures

Orcus

rat spyware stealer 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.InstallState C:\Windows\SysWOW64\WindowsInput.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\System\System C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File opened for modification C:\Program Files (x86)\System\System C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A
File created C:\Program Files (x86)\System\System.config C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe

"C:\Users\Admin\AppData\Local\Temp\c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127.exe"

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4508-0-0x0000000000AB0000-0x0000000000B9A000-memory.dmp

memory/4508-1-0x0000000074630000-0x0000000074DE0000-memory.dmp

memory/4508-2-0x0000000005520000-0x0000000005530000-memory.dmp

memory/4508-3-0x0000000005480000-0x000000000548E000-memory.dmp

memory/4508-4-0x0000000005530000-0x000000000558C000-memory.dmp

memory/4508-5-0x0000000005B40000-0x00000000060E4000-memory.dmp

memory/4508-6-0x00000000056B0000-0x0000000005742000-memory.dmp

memory/4508-7-0x0000000005690000-0x00000000056A2000-memory.dmp

memory/4508-8-0x0000000005B00000-0x0000000005B22000-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/4648-22-0x00000000001C0000-0x00000000001CC000-memory.dmp

memory/4648-23-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp

memory/4648-24-0x000000001AF80000-0x000000001AF90000-memory.dmp

memory/4648-25-0x0000000002250000-0x0000000002262000-memory.dmp

memory/4648-26-0x00000000023E0000-0x000000000241C000-memory.dmp

memory/4648-30-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp

memory/2388-32-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp

memory/2388-33-0x0000000001A70000-0x0000000001A80000-memory.dmp

memory/2388-34-0x000000001B3F0000-0x000000001B4FA000-memory.dmp

C:\Program Files (x86)\System\System

MD5 484c14a70d5a26ebdadde4ad5e03779e
SHA1 0e6a5464eb92561eb007f5bd802083c9c6ec1124
SHA256 c20234fc458f1e66563e6704c29edaf170095261097b9d0449534cc1e2d52127
SHA512 faf234088dce7aa431407bc01777fefd5c67ae497ee63468257cc4e8f4bbc5394b8c2e83cf19ef286b5fd0d74a7dd44a133656a454ec3aaa7cf62ac774e2de8e

memory/4508-47-0x0000000074630000-0x0000000074DE0000-memory.dmp

memory/2388-48-0x00007FFA979E0000-0x00007FFA984A1000-memory.dmp

memory/2388-49-0x0000000001A70000-0x0000000001A80000-memory.dmp