orcus | 8e5bc23e7c6fbddc16388d969727b4a6b6c276ed44c439e92d7302dd9ee05451

General

Target

4.5.1.exe
Size

840KB
MD5

da5b3fb486e501dfa0a27985f565da40
SHA1

3fe35e3c8e208ee2014ddd213d6947db1167faab
SHA256

8e5bc23e7c6fbddc16388d969727b4a6b6c276ed44c439e92d7302dd9ee05451
SHA512

bfa4defc4d2f17244c187a6d5c3cea86e0c3edac382e292a202871c01ed3e2fc2fedace44f35cb144ad120570e34c7b58a52b8cbb16bfcd51711755762439eba
SSDEEP

24576:9yPS04YNEMuExDiU6E5R9s8xY/2l/dL5Ibt+rt:9yl4auS+UjfU2TFIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

192.168.10.8

91.92.247.123

tech11.ddns.net

tech22.ddns.net

Mutex

ec3750d27df2422f9771480c02d90266

Attributes

administration_rights_required
false
anti_debugger
false
anti_tcp_analyzer
false
antivm
false
autostart_method
2
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
04/04/2023 06:41:34
plugins
AgEAAA==
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

Executes dropped EXE 1 IoCs

pid	Process
2584	AudioDriver.exe

Loads dropped DLL 1 IoCs

pid	Process
2728	4.5.1.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	4.5.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe
2584	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2584	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2584	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2584	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2584	AudioDriver.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2584	2728	4.5.1.exe	30
PID 2728 wrote to memory of 2584	2728	4.5.1.exe	30
PID 2728 wrote to memory of 2584	2728	4.5.1.exe	30
PID 2728 wrote to memory of 2584	2728	4.5.1.exe	30

C:\Users\Admin\AppData\Local\Temp\4.5.1.exe
"C:\Users\Admin\AppData\Local\Temp\4.5.1.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- 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:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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
840KB

MD5
da5b3fb486e501dfa0a27985f565da40

SHA1
3fe35e3c8e208ee2014ddd213d6947db1167faab

SHA256
8e5bc23e7c6fbddc16388d969727b4a6b6c276ed44c439e92d7302dd9ee05451

SHA512
bfa4defc4d2f17244c187a6d5c3cea86e0c3edac382e292a202871c01ed3e2fc2fedace44f35cb144ad120570e34c7b58a52b8cbb16bfcd51711755762439eba

Download Submit
memory/2584-16-0x0000000000B40000-0x0000000000C18000-memory.dmp

Filesize
864KB

Download
memory/2584-18-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2584-17-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2584-19-0x00000000042D0000-0x00000000042E0000-memory.dmp

Filesize
64KB

Download
memory/2584-20-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2728-2-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/2728-3-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2728-4-0x0000000000A60000-0x0000000000AAC000-memory.dmp

Filesize
304KB

Download
memory/2728-8-0x0000000002260000-0x00000000022AE000-memory.dmp

Filesize
312KB

Download
memory/2728-1-0x0000000000D00000-0x0000000000DD8000-memory.dmp

Filesize
864KB

Download
memory/2728-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

Filesize
4KB

Download
memory/2728-15-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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