orcus | a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991

General

Target

a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe
Size

840KB
MD5

58507d9cc6add196101fbe1fca25fba8
SHA1

9f5094702b83811ed5e2c6f9e4e1bc09d1b9a42d
SHA256

a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991
SHA512

89b0be5407d174c23b9b9c6f39ed0024f6e9cd6b993ee93e9c280ab22bdd41f5494a9a7e3c9d5368750066e869aa678881e7bb8126e29a9c59d01380bf2455dd
SSDEEP

24576:FLFS04YNEMuExDiU6E5R9s8xY/2l/d6N1Ibt+rK:FL34auS+UjfU2T21Ibt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

100.65.22.73

Mutex

601cec6eb63642fd8193ed6ea378f6d0

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
10/03/2024 16:57:18
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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe

Executes dropped EXE 1 IoCs

pid	Process
904	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	a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe
904	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 904	3148	a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe	86
PID 3148 wrote to memory of 904	3148	a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe	86
PID 3148 wrote to memory of 904	3148	a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe	86

C:\Users\Admin\AppData\Local\Temp\a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe
"C:\Users\Admin\AppData\Local\Temp\a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3148
- 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
  PID:904

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
840KB

MD5
58507d9cc6add196101fbe1fca25fba8

SHA1
9f5094702b83811ed5e2c6f9e4e1bc09d1b9a42d

SHA256
a32aa758902fe75777c4d9cc6bf2534317fee35cb9f3653be482c16c31737991

SHA512
89b0be5407d174c23b9b9c6f39ed0024f6e9cd6b993ee93e9c280ab22bdd41f5494a9a7e3c9d5368750066e869aa678881e7bb8126e29a9c59d01380bf2455dd

Download Submit
memory/904-24-0x0000000006700000-0x00000000068C2000-memory.dmp

Filesize
1.8MB

Download
memory/904-23-0x00000000744B0000-0x0000000074C60000-memory.dmp

Filesize
7.7MB

Download
memory/904-27-0x00000000744B0000-0x0000000074C60000-memory.dmp

Filesize
7.7MB

Download
memory/904-26-0x0000000006670000-0x000000000667A000-memory.dmp

Filesize
40KB

Download
memory/904-25-0x0000000005F00000-0x0000000005F10000-memory.dmp

Filesize
64KB

Download
memory/904-21-0x00000000744B0000-0x0000000074C60000-memory.dmp

Filesize
7.7MB

Download
memory/3148-2-0x00000000033C0000-0x00000000033CA000-memory.dmp

Filesize
40KB

Download
memory/3148-6-0x0000000005D40000-0x0000000005D8C000-memory.dmp

Filesize
304KB

Download
memory/3148-9-0x0000000006460000-0x00000000064AE000-memory.dmp

Filesize
312KB

Download
memory/3148-22-0x00000000744B0000-0x0000000074C60000-memory.dmp

Filesize
7.7MB

Download
memory/3148-1-0x0000000000FD0000-0x00000000010A8000-memory.dmp

Filesize
864KB

Download
memory/3148-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/3148-5-0x0000000005DD0000-0x0000000005E62000-memory.dmp

Filesize
584KB

Download
memory/3148-4-0x0000000005EB0000-0x0000000006454000-memory.dmp

Filesize
5.6MB

Download
memory/3148-3-0x00000000744B0000-0x0000000074C60000-memory.dmp

Filesize
7.7MB

Download

Analysis

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