orcus | 3e44b4569dbbf3b77f6bd8d232962f57269aa77d4e42e5906e460474d20bde90

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 17:16

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General

Target

file.exe
Size

4.1MB
MD5

8158f2604b140c677599c7e151b01caa
SHA1

86c85b589762df652ef89085ad524cdbe64c6788
SHA256

3e44b4569dbbf3b77f6bd8d232962f57269aa77d4e42e5906e460474d20bde90
SHA512

e9a8411406802d76f58ac938a35a707022c68a8f7d4b00cef8e020815a5990c48c7af0f06bdb1cf4a49c1d5ee21d4a2cff979414d233ae297cbf9f0dbe2d7ee7
SSDEEP

49152:PWhfJr3YyD89qp8eFgu/HrSHDMui9lhH8/07KJOZJcfs5HPsuvBkM+SsAeF92H2M:PeIyTKeFNPHW07KMncfaPs/AL2z5qN

Score

10^/10

orcus discovery evasion persistence rat spyware stealer

Malware Config

Signatures

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

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	file.exe

Orcurs Rat Executable 1 IoCs

resource	yara_rule
behavioral1/memory/3516-34759-0x0000000000400000-0x000000000052E000-memory.dmp	orcus

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	file.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe

Executes dropped EXE 2 IoCs

pid	Process
3516	file.exe
4004	System Runner.exe

Loads dropped DLL 2 IoCs

pid	Process
2532	file.exe
3516	file.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\666999666 = "C:\\ProgramData\\file.exe"	file.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	file.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 3516	2532	file.exe	32

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\windows\System Runner.exe	file.exe
File opened for modification	C:\Program Files (x86)\windows\System Runner.exe	file.exe
File created	C:\Program Files (x86)\windows\System Runner.exe.config	file.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	System Runner.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3664	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe
2532	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	file.exe
Token: SeDebugPrivilege	3516	file.exe
Token: SeDebugPrivilege	4004	System Runner.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3516	2532	file.exe	32
PID 2532 wrote to memory of 3600	2532	file.exe	33
PID 2532 wrote to memory of 3600	2532	file.exe	33
PID 2532 wrote to memory of 3600	2532	file.exe	33
PID 2532 wrote to memory of 3600	2532	file.exe	33
PID 3600 wrote to memory of 3664	3600	cmd.exe	35
PID 3600 wrote to memory of 3664	3600	cmd.exe	35
PID 3600 wrote to memory of 3664	3600	cmd.exe	35
PID 3600 wrote to memory of 3664	3600	cmd.exe	35
PID 3516 wrote to memory of 4004	3516	file.exe	36
PID 3516 wrote to memory of 4004	3516	file.exe	36
PID 3516 wrote to memory of 4004	3516	file.exe	36
PID 3516 wrote to memory of 4004	3516	file.exe	36

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3516
- - C:\Program Files (x86)\windows\System Runner.exe
    "C:\Program Files (x86)\windows\System Runner.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4004
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c timeout /t 1 && DEL /f file.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3600
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\windows\System Runner.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Users\Admin\AppData\Local\Temp\file.exe

Filesize
4.1MB

MD5
8158f2604b140c677599c7e151b01caa

SHA1
86c85b589762df652ef89085ad524cdbe64c6788

SHA256
3e44b4569dbbf3b77f6bd8d232962f57269aa77d4e42e5906e460474d20bde90

SHA512
e9a8411406802d76f58ac938a35a707022c68a8f7d4b00cef8e020815a5990c48c7af0f06bdb1cf4a49c1d5ee21d4a2cff979414d233ae297cbf9f0dbe2d7ee7

Download Submit
memory/2532-35-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-7-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-0-0x00000000740AE000-0x00000000740AF000-memory.dmp

Filesize
4KB

Download
memory/2532-9-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-33-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-5-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-27-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-31-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-47-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-49-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-67-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-65-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-63-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-61-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-59-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-29-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-55-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-53-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-51-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-45-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-43-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-41-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-39-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-37-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-4-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-2-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-57-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-25-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-23-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-21-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-19-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-17-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-15-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-13-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-11-0x0000000005310000-0x00000000055B6000-memory.dmp

Filesize
2.6MB

Download
memory/2532-34734-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-34735-0x00000000740AE000-0x00000000740AF000-memory.dmp

Filesize
4KB

Download
memory/2532-34736-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-3-0x0000000005310000-0x00000000055BC000-memory.dmp

Filesize
2.7MB

Download
memory/2532-1-0x00000000008F0000-0x0000000000D04000-memory.dmp

Filesize
4.1MB

Download
memory/2532-34758-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/3516-34759-0x0000000000400000-0x000000000052E000-memory.dmp

Filesize
1.2MB

Download
memory/3516-34764-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/3516-34821-0x0000000000380000-0x000000000038E000-memory.dmp

Filesize
56KB

Download
memory/3516-34822-0x0000000005B20000-0x0000000005B7C000-memory.dmp

Filesize
368KB

Download
memory/3516-34823-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/3516-34824-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/3516-34835-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/3516-34760-0x00000000740A0000-0x000000007478E000-memory.dmp

Filesize
6.9MB

Download
memory/4004-34836-0x0000000001280000-0x0000000001694000-memory.dmp

Filesize
4.1MB

Download