Malware Analysis Report

2025-03-15 06:51

Sample ID 240108-bhx7raheal
Target d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f
SHA256 d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f
Tags
orcus
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f

Threat Level: Known bad

The file d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f was found to be: Known bad.

Malicious Activity Summary

orcus

Orcurs Rat Executable

Orcus family

Orcus main payload

Drops desktop.ini file(s)

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-01-08 01:09

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

2024-01-08 01:09

Reported

2024-01-08 01:11

Platform

win7-20231129-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe

"C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESDE7.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCDE6.tmp"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe

"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\mrsizfzc.cmdline"

Network

N/A

Files

memory/2932-2-0x000007FEF5430000-0x000007FEF5DCD000-memory.dmp

memory/2932-3-0x0000000002130000-0x00000000021B0000-memory.dmp

\??\c:\Users\Admin\AppData\Local\Temp\mrsizfzc.0.cs

MD5 b3de14587a1cd3002187e6a95b07d64b
SHA1 375956ec5e92ccf1d50d141250aa4435f51c772a
SHA256 c47936bfdaa8f380f241ab3e32b3eff522be4d847795629f929fbbb92bda8d23
SHA512 90555b36ffbcaae4cb66c40ba6ea0f171f19889e90864e836a92b58c19ef3238316650b964c89742d5024ef87dabf8546573f94b479be316142ea2f63071f53a

\??\c:\Users\Admin\AppData\Local\Temp\mrsizfzc.cmdline

MD5 8be99be78e1d91fa8d05323253a33f33
SHA1 196fc6fb9537fef16da8ec06f70bb7493fe33c20
SHA256 38e93c86d04b9869b4386a70623cb8abddccc3f17ac57b5973eaa5da0d044ea8
SHA512 1085e2354dcac6d51632f9ffa6b51d14eab31e2097477537698b6b210d49e80781ff3e9e549c48aa5512d278bbc1dced20e289c0f7f06396e897d8d8896f4878

memory/2932-17-0x00000000008C0000-0x00000000008D6000-memory.dmp

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

MD5 fc820d263006df2c20cd72df58407a48
SHA1 1aa545fc4c433e8b2b5afc08fbc1933402dd5fd2
SHA256 38fb34b3fb385e08c04ef9b8f54f1c815b201102e5d4024cdc5c9d290a36f154
SHA512 cd88090b927457266ba2e4d1db6f4bdf0e5cba66d6fd85de8a6f2b20828ea98597b2626773c99ad92c2da0d9a40289d230e9d268618e6ec1c234d275306f9f20

memory/2932-21-0x0000000000710000-0x0000000000718000-memory.dmp

memory/2932-20-0x00000000006D0000-0x00000000006D8000-memory.dmp

memory/2932-19-0x00000000004A0000-0x00000000004B2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\RESDE7.tmp

MD5 077ca8c1b066766617821b754eeb3f37
SHA1 5f435ce3fa127ab5fb176fc56cc2e1c2559a5d84
SHA256 23c58d3dc54e27037ed5fb3b9d3f87e0b69d6eae6c33be998b3e578babd88305
SHA512 6ec3860464e7773b31dc7edb94bb106bb5e53b3b84f7e7583221e3ff3bafaa5c4b1d762ae4979aa7fe3fef8b0f54745d20e3e6a067f0d8af2a4c1010363270c3

memory/2932-23-0x0000000002130000-0x00000000021B0000-memory.dmp

\??\c:\Users\Admin\AppData\Local\Temp\CSCDE6.tmp

MD5 b60a7efe5e3ba971c8543bd0a6eb345e
SHA1 a9dcbf81f831bdc14f90ed07af526d332180ac0d
SHA256 d2489c87a35b3c58f2bf0e089cf7bc070fb8531668f2dee8ed220f25dc77759e
SHA512 fa648849c062922e885e39a82bcf1637bc56f4e0f4fa6743cf8f8192ad051a6f635292bb75fbb61bac91d4ea2629d8ad0d5b86146879a7d5fae01f0730d1a831

memory/2932-7-0x000007FEF5430000-0x000007FEF5DCD000-memory.dmp

memory/2932-1-0x0000000000270000-0x000000000027E000-memory.dmp

memory/2932-0-0x0000000002080000-0x00000000020DC000-memory.dmp

memory/2932-24-0x000007FEF5430000-0x000007FEF5DCD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-08 01:09

Reported

2024-01-08 01:11

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe"

Signatures

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe

"C:\Users\Admin\AppData\Local\Temp\d19d786da036360b868027953205c8c8cf1cf76b51d55877ce339c9bdfbe557f.exe"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES5341.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC5340.tmp"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe

"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\cfz9g8wy.cmdline"

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 148.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 17.134.221.88.in-addr.arpa udp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
GB 87.248.205.0:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
US 93.184.221.240:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 50.134.221.88.in-addr.arpa udp

Files

memory/4548-1-0x0000000001490000-0x00000000014A0000-memory.dmp

memory/4548-3-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/4548-6-0x000000001BD70000-0x000000001BD7E000-memory.dmp

memory/4548-8-0x000000001C7C0000-0x000000001C85C000-memory.dmp

memory/4548-7-0x000000001C250000-0x000000001C71E000-memory.dmp

memory/4548-2-0x000000001BBA0000-0x000000001BBFC000-memory.dmp

memory/4548-0-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

\??\c:\Users\Admin\AppData\Local\Temp\cfz9g8wy.0.cs

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/4548-22-0x000000001CE80000-0x000000001CE96000-memory.dmp

memory/4548-27-0x000000001D270000-0x000000001D2D2000-memory.dmp

memory/4548-26-0x000000001BB60000-0x000000001BB68000-memory.dmp

memory/4548-30-0x000000001D3D0000-0x000000001D3EE000-memory.dmp

memory/4548-29-0x000000001E190000-0x000000001E280000-memory.dmp

memory/4548-28-0x000000001DBD0000-0x000000001E18A000-memory.dmp

memory/4548-31-0x000000001E290000-0x000000001E2D9000-memory.dmp

memory/4548-25-0x0000000001480000-0x0000000001488000-memory.dmp

memory/4548-24-0x000000001BAD0000-0x000000001BAE2000-memory.dmp

memory/4548-32-0x0000000001490000-0x00000000014A0000-memory.dmp

memory/4548-33-0x000000001E370000-0x000000001E3E0000-memory.dmp

memory/4548-34-0x0000000001490000-0x00000000014A0000-memory.dmp

memory/3352-14-0x00000000023B0000-0x00000000023C0000-memory.dmp

\??\c:\Users\Admin\AppData\Local\Temp\cfz9g8wy.cmdline

MD5 7e186e67caa95f108c8c1920543e2757
SHA1 2cc3c77358e288e10d525185e3e510a6be983f76
SHA256 1dc163f0a6553d2b5be983ea7c4ba35542a2fbbcd532bc66af429c8c9a298039
SHA512 bffc77695894f11b5c487b9bea1c574b853e2699452460c4ec1580d12b90aa15d880934cdd66ed2cd2b68b3abf6830411695445a60a74084e409d264052ef2fc

memory/4548-36-0x000000001C900000-0x000000001C908000-memory.dmp

memory/4548-38-0x0000000001490000-0x00000000014A0000-memory.dmp

memory/4548-37-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/4548-39-0x0000000001490000-0x00000000014A0000-memory.dmp

memory/4548-40-0x0000000001490000-0x00000000014A0000-memory.dmp