orcus | 6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 01:10

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General

Target

6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
Size

1.2MB
MD5

484ccd343ab6a5c338b67264a6fdb5d3
SHA1

1bd30cc22cbd8813e5218548b0cb301e170bbc83
SHA256

6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4
SHA512

a93d07c673734b069e3d507377534eea6c33e29239045be62e16c7fb6d518d02c11150e45420a2d3b0e16d6b1f99f5d631c3782b624c2073c5b42a11cb2bb95f
SSDEEP

24576:rGK4MROxnFE32O3KrrcI0AilFEvxHPyoos/:rKMiujKrrcI0AilFEvxHP

Score

10^/10

orcus rat spyware stealer

Malware Config

Extracted

Family

orcus

127.0.0.1:666

Mutex

7d31cc59ebdf4dc49809adc208f79149

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\ChromiumUpdated\Updater.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
svchost
watchdog_path
AppData\sihost.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus

Orcus main payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023420-48.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/3380-1-0x0000000000BB0000-0x0000000000CE0000-memory.dmp	orcus
behavioral2/files/0x0007000000023420-48.dat	orcus

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	Updater.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	sihost.exe

Executes dropped EXE 6 IoCs

pid	Process
4612	WindowsInput.exe
4192	WindowsInput.exe
4372	Updater.exe
3168	Updater.exe
956	sihost.exe
2076	sihost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ChromiumUpdated\Updater.exe	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
File opened for modification	C:\Program Files (x86)\ChromiumUpdated\Updater.exe	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
File created	C:\Program Files (x86)\ChromiumUpdated\Updater.exe.config	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4372	Updater.exe
4372	Updater.exe
4372	Updater.exe
2076	sihost.exe
2076	sihost.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe
4372	Updater.exe
2076	sihost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4372	Updater.exe
Token: SeDebugPrivilege	956	sihost.exe
Token: SeDebugPrivilege	2076	sihost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4372	Updater.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4372	Updater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4372	Updater.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3380 wrote to memory of 4612	3380	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe	87
PID 3380 wrote to memory of 4612	3380	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe	87
PID 3380 wrote to memory of 4372	3380	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe	91
PID 3380 wrote to memory of 4372	3380	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe	91
PID 3380 wrote to memory of 4372	3380	6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe	91
PID 4372 wrote to memory of 956	4372	Updater.exe	94
PID 4372 wrote to memory of 956	4372	Updater.exe	94
PID 4372 wrote to memory of 956	4372	Updater.exe	94
PID 956 wrote to memory of 2076	956	sihost.exe	95
PID 956 wrote to memory of 2076	956	sihost.exe	95
PID 956 wrote to memory of 2076	956	sihost.exe	95

C:\Users\Admin\AppData\Local\Temp\6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe
"C:\Users\Admin\AppData\Local\Temp\6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4612
- C:\Program Files (x86)\ChromiumUpdated\Updater.exe
  "C:\Program Files (x86)\ChromiumUpdated\Updater.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\Users\Admin\AppData\Roaming\sihost.exe
    "C:\Users\Admin\AppData\Roaming\sihost.exe" /launchSelfAndExit "C:\Program Files (x86)\ChromiumUpdated\Updater.exe" 4372 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:956
  - - C:\Users\Admin\AppData\Roaming\sihost.exe
      "C:\Users\Admin\AppData\Roaming\sihost.exe" /watchProcess "C:\Program Files (x86)\ChromiumUpdated\Updater.exe" 4372 "/protectFile"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2076

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:4192

C:\Program Files (x86)\ChromiumUpdated\Updater.exe
"C:\Program Files (x86)\ChromiumUpdated\Updater.exe"
1⤵
- Executes dropped EXE
PID:3168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\ChromiumUpdated\Updater.exe

Filesize
1.2MB

MD5
484ccd343ab6a5c338b67264a6fdb5d3

SHA1
1bd30cc22cbd8813e5218548b0cb301e170bbc83

SHA256
6940a399198631c39646edd49630f466839e6ec5040ac86cbace99014e50dfa4

SHA512
a93d07c673734b069e3d507377534eea6c33e29239045be62e16c7fb6d518d02c11150e45420a2d3b0e16d6b1f99f5d631c3782b624c2073c5b42a11cb2bb95f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\sihost.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Roaming\ChromiumUpdater\err_7d31cc59ebdf4dc49809adc208f79149.dat

Filesize
1KB

MD5
3c00e6e0e8fb824cdd859941806d8958

SHA1
fb4f4ff882604ce9885f9fddf4cfcb488ad965b6

SHA256
4aa2bd57c848628bc42341a6dec8cad6a4a79273e1a94ee259a1779ae3623776

SHA512
85f1f346f2a506d56986b129c3ee805e1afb73410235837610803354d22a9b8c3fa9f9b8ddb8dd469214c2be54f1b5915795a28ab5b178b1b1a2fa7fb5f5070e

Download Submit
C:\Users\Admin\AppData\Roaming\sihost.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

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

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/956-83-0x00000000004F0000-0x00000000004F8000-memory.dmp

Filesize
32KB

Download
memory/3380-10-0x0000000005DB0000-0x0000000005E16000-memory.dmp

Filesize
408KB

Download
memory/3380-6-0x0000000005850000-0x00000000058E2000-memory.dmp

Filesize
584KB

Download
memory/3380-9-0x0000000005900000-0x0000000005908000-memory.dmp

Filesize
32KB

Download
memory/3380-0-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

Filesize
4KB

Download
memory/3380-11-0x0000000006B30000-0x0000000007148000-memory.dmp

Filesize
6.1MB

Download
memory/3380-12-0x0000000005E70000-0x0000000005E82000-memory.dmp

Filesize
72KB

Download
memory/3380-13-0x0000000005ED0000-0x0000000005F0C000-memory.dmp

Filesize
240KB

Download
memory/3380-14-0x0000000005F10000-0x0000000005F5C000-memory.dmp

Filesize
304KB

Download
memory/3380-15-0x0000000006640000-0x000000000674A000-memory.dmp

Filesize
1.0MB

Download
memory/3380-17-0x00000000069D0000-0x00000000069F2000-memory.dmp

Filesize
136KB

Download
memory/3380-7-0x0000000005840000-0x0000000005852000-memory.dmp

Filesize
72KB

Download
memory/3380-59-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/3380-5-0x0000000005F60000-0x0000000006504000-memory.dmp

Filesize
5.6MB

Download
memory/3380-1-0x0000000000BB0000-0x0000000000CE0000-memory.dmp

Filesize
1.2MB

Download
memory/3380-2-0x0000000002FE0000-0x0000000002FEE000-memory.dmp

Filesize
56KB

Download
memory/3380-3-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/3380-8-0x00000000058F0000-0x00000000058F8000-memory.dmp

Filesize
32KB

Download
memory/3380-4-0x0000000005670000-0x00000000056CC000-memory.dmp

Filesize
368KB

Download
memory/4192-41-0x00007FFBEFD40000-0x00007FFBF0801000-memory.dmp

Filesize
10.8MB

Download
memory/4192-42-0x000000001AE40000-0x000000001AF4A000-memory.dmp

Filesize
1.0MB

Download
memory/4192-88-0x00007FFBEFD40000-0x00007FFBF0801000-memory.dmp

Filesize
10.8MB

Download
memory/4372-64-0x0000000005D50000-0x0000000005D68000-memory.dmp

Filesize
96KB

Download
memory/4372-60-0x0000000004B40000-0x0000000004B52000-memory.dmp

Filesize
72KB

Download
memory/4372-63-0x0000000006390000-0x00000000063DE000-memory.dmp

Filesize
312KB

Download
memory/4372-65-0x0000000006580000-0x0000000006598000-memory.dmp

Filesize
96KB

Download
memory/4372-67-0x0000000006910000-0x0000000006920000-memory.dmp

Filesize
64KB

Download
memory/4372-68-0x0000000006920000-0x0000000006AE2000-memory.dmp

Filesize
1.8MB

Download
memory/4372-69-0x0000000006C90000-0x0000000006C9A000-memory.dmp

Filesize
40KB

Download
memory/4612-39-0x00007FFBEFD40000-0x00007FFBF0801000-memory.dmp

Filesize
10.8MB

Download
memory/4612-34-0x00000000011F0000-0x0000000001202000-memory.dmp

Filesize
72KB

Download
memory/4612-35-0x000000001C600000-0x000000001C63C000-memory.dmp

Filesize
240KB

Download
memory/4612-33-0x00007FFBEFD40000-0x00007FFBF0801000-memory.dmp

Filesize
10.8MB

Download
memory/4612-31-0x00007FFBEFD43000-0x00007FFBEFD45000-memory.dmp

Filesize
8KB

Download
memory/4612-32-0x00000000008F0000-0x00000000008FC000-memory.dmp

Filesize
48KB

Download