orcus | a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56

General

Target

a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe
Size

842KB
MD5

6ed8b8befe2c808932e76058343a2b10
SHA1

3da7ff017767177385acf8938fa7bec98e2e07df
SHA256

a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56
SHA512

685576d27e021576259dab701e5ce7815ace1dae550a99525f68c181eeb3e604d33105fa4ec8c12f192e1340aa2b8c61ed600793fe46e182251ff6b9ffc4929b
SSDEEP

24576:+I4PD3o8uzVfhWfmz1ldP71kYOJPAdW8cRhY:+PP7JuOWdT1kY9dWBY

Score

10^/10

orcus discovery rat spyware stealer upx

Malware Config

Extracted

Family

orcus

C2

192.168.2.4

Mutex

a3607d62eed94a4d8d054d250287d86f

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
11/26/2024 08:35:25
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
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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe

Executes dropped EXE 1 IoCs

pid	Process
1940	Image-O‮gpj.scr

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1904-0-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp	upx
behavioral2/memory/1904-16-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp	upx
behavioral2/memory/1904-18-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp	upx

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 1 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	Image-O‮gpj.scr

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	Image-O‮gpj.scr

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 1940	1904	a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe	82
PID 1904 wrote to memory of 1940	1904	a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe	82
PID 1904 wrote to memory of 1940	1904	a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe	82

C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe
"C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr" /S
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1940

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\Local\Temp\RarSFX0\Image-O‮gpj.scr

Filesize
855KB

MD5
0c9b9d93b1938108ffe6d2860ae9a32d

SHA1
06891084a5e117b5f8953b336a10cfb149aa9b89

SHA256
ed84165ca307b37979dbf6ea4872b9b4b581beb789fa26fa46d807b348a9a66b

SHA512
f66c7245b411e904d75094e37b488299de992a967b2ba67023bda22b9f34fe4dadbd11b4f344aa55337f41d3565bb4629c5c78ed8b32474eb7764ba4289c5043

Download Submit
memory/1904-0-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

Filesize
528KB

Download
memory/1904-16-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

Filesize
528KB

Download
memory/1904-18-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

Filesize
528KB

Download
memory/1940-7-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/1940-8-0x00000000001D0000-0x00000000002AC000-memory.dmp

Filesize
880KB

Download
memory/1940-9-0x0000000000DB0000-0x0000000000DBA000-memory.dmp

Filesize
40KB

Download
memory/1940-10-0x0000000074D80000-0x0000000075530000-memory.dmp

Filesize
7.7MB

Download
memory/1940-11-0x0000000005250000-0x00000000057F4000-memory.dmp

Filesize
5.6MB

Download
memory/1940-12-0x0000000005110000-0x00000000051A2000-memory.dmp

Filesize
584KB

Download
memory/1940-13-0x0000000005080000-0x00000000050CC000-memory.dmp

Filesize
304KB

Download
memory/1940-15-0x0000000074D80000-0x0000000075530000-memory.dmp

Filesize
7.7MB

Download

Analysis

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