orcus | cc06316a5e6bfe3129f1faffc44ef54ef44bddf981bb36803bf11eb32b71dc47

General

Target

PCOptimizer.exe
Size

939KB
MD5

319f0d1b639bc29681a5cd4d25dde99f
SHA1

4327d388328ac434a67377ac8bacc541b6930144
SHA256

cc06316a5e6bfe3129f1faffc44ef54ef44bddf981bb36803bf11eb32b71dc47
SHA512

a8620ad4e3fbf3ee2577a5566e2ddb4272ef9931d0edb71e88888d4c25c69ec3e21c660dc5c586500c0114bde7f7682b97624ce206387b5577b0353dbe91a26c
SSDEEP

24576:t3WS04YNEMuExDiU6E5R9s8xY/2l/d1Lc831Ibt+rDrQo:t3y4auS+UjfU2Tlt31Ibt+roo

Score

10^/10

orcus test files discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

TEST FILES

C2

5email-hitting.gl.at.ply.gg

Mutex

86a24ee19dc54ed3a6264e85d7423f94

Attributes

administration_rights_required
false
anti_debugger
false
anti_tcp_analyzer
false
antivm
false
autostart_method
1
change_creation_date
false
force_installer_administrator_privileges
false
hide_file
false
install
false
installation_folder
%appdata%\Microsoft\Speech\AudioDriver.exe
installservice
false
keylogger_enabled
false
newcreationdate
10/21/2024 17:09:25
plugins
AgUFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIGQAZQBhAGMAMwBlAGEAYwBhAGIAZgAyADQANwBhADQAOQBkADkAZAA3ADkAMQBmADUAOAAzADIAMgAyAGYAMgABAAAAAgI=
reconnect_delay
10000
registry_autostart_keyname
Audio HD Driver
registry_hidden_autostart
false
set_admin_flag
false
tasksch_name
Audio HD Driver
tasksch_request_highest_privileges
false
try_other_autostart_onfail
false

aes.plain

Signatures

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

Checks computer location settings 2 TTPs 1 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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	PCOptimizer.exe

Executes dropped EXE 1 IoCs

pid	Process
2432	AudioDriver.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 2 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	PCOptimizer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe
2432	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2432	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2432	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2432	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 2432	4040	PCOptimizer.exe	83
PID 4040 wrote to memory of 2432	4040	PCOptimizer.exe	83
PID 4040 wrote to memory of 2432	4040	PCOptimizer.exe	83

C:\Users\Admin\AppData\Local\Temp\PCOptimizer.exe
"C:\Users\Admin\AppData\Local\Temp\PCOptimizer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

Filesize
939KB

MD5
319f0d1b639bc29681a5cd4d25dde99f

SHA1
4327d388328ac434a67377ac8bacc541b6930144

SHA256
cc06316a5e6bfe3129f1faffc44ef54ef44bddf981bb36803bf11eb32b71dc47

SHA512
a8620ad4e3fbf3ee2577a5566e2ddb4272ef9931d0edb71e88888d4c25c69ec3e21c660dc5c586500c0114bde7f7682b97624ce206387b5577b0353dbe91a26c

Download Submit
memory/2432-30-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2432-29-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2432-28-0x00000000063A0000-0x00000000063AA000-memory.dmp

Filesize
40KB

Download
memory/2432-27-0x00000000059D0000-0x00000000059E0000-memory.dmp

Filesize
64KB

Download
memory/2432-26-0x0000000005A40000-0x0000000005C02000-memory.dmp

Filesize
1.8MB

Download
memory/2432-25-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2432-23-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4040-8-0x0000000005AD0000-0x0000000005AD8000-memory.dmp

Filesize
32KB

Download
memory/4040-11-0x0000000005D60000-0x0000000005DAE000-memory.dmp

Filesize
312KB

Download
memory/4040-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/4040-7-0x0000000005B80000-0x0000000005BE6000-memory.dmp

Filesize
408KB

Download
memory/4040-24-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4040-6-0x00000000057E0000-0x000000000582C000-memory.dmp

Filesize
304KB

Download
memory/4040-5-0x0000000005AE0000-0x0000000005B72000-memory.dmp

Filesize
584KB

Download
memory/4040-4-0x0000000005DF0000-0x0000000006394000-memory.dmp

Filesize
5.6MB

Download
memory/4040-3-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4040-2-0x0000000002EF0000-0x0000000002EFA000-memory.dmp

Filesize
40KB

Download
memory/4040-1-0x0000000000B10000-0x0000000000C02000-memory.dmp

Filesize
968KB

Download

Analysis

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