orcus | da27775617ea9a84d46876fd71de1a548e5d3b0e1b505cab270afb250b596fbe

Analysis

max time kernel
119s
max time network
17s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24-08-2024 00:25

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General

Target

6e8d85f01f1162a214619e5fff7c0770N.exe
Size

920KB
MD5

6e8d85f01f1162a214619e5fff7c0770
SHA1

2e12ef483caaa2ad6f25fdbcbbf9e26791560c43
SHA256

da27775617ea9a84d46876fd71de1a548e5d3b0e1b505cab270afb250b596fbe
SHA512

b1cd53ddd4a33349f511f007f3ef233a6ad093f27147e56adfa669120e9d793272946211fecb41f2ca335bb908b92e576059947d77fed663d8690dd85d4756d5
SSDEEP

24576:OpP4MROxnFt3rmrrcI0AilFEvxHPR7ooC:O2MijarrcI0AilFEvxHP

Score

10^/10

orcus v0.4 discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

v0.4

127.0.0.1:80

Mutex

367111423dbd45eb867e61bc8dff1caa

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\RealtekAudio5.1\RealtekAudioi.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
Orcus
watchdog_path
AppData\RealtekAudioCicle.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d20-26.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2976-1-0x0000000001240000-0x000000000132C000-memory.dmp	orcus
behavioral1/files/0x0008000000016d20-26.dat	orcus
behavioral1/memory/380-33-0x0000000000170000-0x000000000025C000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
2820	WindowsInput.exe
2636	WindowsInput.exe
380	RealtekAudioi.exe
2288	RealtekAudioi.exe
2224	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe

Loads dropped DLL 3 IoCs

pid	Process
2976	6e8d85f01f1162a214619e5fff7c0770N.exe
2976	6e8d85f01f1162a214619e5fff7c0770N.exe
380	RealtekAudioi.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	6e8d85f01f1162a214619e5fff7c0770N.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	6e8d85f01f1162a214619e5fff7c0770N.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe	6e8d85f01f1162a214619e5fff7c0770N.exe
File opened for modification	C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe	6e8d85f01f1162a214619e5fff7c0770N.exe
File created	C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe.config	6e8d85f01f1162a214619e5fff7c0770N.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	6e8d85f01f1162a214619e5fff7c0770N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RealtekAudioi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RealtekAudioi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RealtekAudioCicle.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RealtekAudioCicle.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe
380	RealtekAudioi.exe
380	RealtekAudioi.exe
2064	RealtekAudioCicle.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	380	RealtekAudioi.exe
Token: SeDebugPrivilege	2224	RealtekAudioCicle.exe
Token: SeDebugPrivilege	2064	RealtekAudioCicle.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
380	RealtekAudioi.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2820	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	30
PID 2976 wrote to memory of 2820	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	30
PID 2976 wrote to memory of 2820	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	30
PID 2976 wrote to memory of 2820	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	30
PID 2976 wrote to memory of 380	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	32
PID 2976 wrote to memory of 380	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	32
PID 2976 wrote to memory of 380	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	32
PID 2976 wrote to memory of 380	2976	6e8d85f01f1162a214619e5fff7c0770N.exe	32
PID 1084 wrote to memory of 2288	1084	taskeng.exe	34
PID 1084 wrote to memory of 2288	1084	taskeng.exe	34
PID 1084 wrote to memory of 2288	1084	taskeng.exe	34
PID 1084 wrote to memory of 2288	1084	taskeng.exe	34
PID 380 wrote to memory of 2224	380	RealtekAudioi.exe	35
PID 380 wrote to memory of 2224	380	RealtekAudioi.exe	35
PID 380 wrote to memory of 2224	380	RealtekAudioi.exe	35
PID 380 wrote to memory of 2224	380	RealtekAudioi.exe	35
PID 2224 wrote to memory of 2064	2224	RealtekAudioCicle.exe	36
PID 2224 wrote to memory of 2064	2224	RealtekAudioCicle.exe	36
PID 2224 wrote to memory of 2064	2224	RealtekAudioCicle.exe	36
PID 2224 wrote to memory of 2064	2224	RealtekAudioCicle.exe	36

C:\Users\Admin\AppData\Local\Temp\6e8d85f01f1162a214619e5fff7c0770N.exe
"C:\Users\Admin\AppData\Local\Temp\6e8d85f01f1162a214619e5fff7c0770N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2820
- C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe
  "C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:380
- - C:\Users\Admin\AppData\Roaming\RealtekAudioCicle.exe
    "C:\Users\Admin\AppData\Roaming\RealtekAudioCicle.exe" /launchSelfAndExit "C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe" 380 /protectFile
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2224
  - - C:\Users\Admin\AppData\Roaming\RealtekAudioCicle.exe
      "C:\Users\Admin\AppData\Roaming\RealtekAudioCicle.exe" /watchProcess "C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe" 380 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2064

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2636

C:\Windows\system32\taskeng.exe
taskeng.exe {AE4CC18D-A603-470E-86E0-F9E18722D6D5} S-1-5-21-3434294380-2554721341-1919518612-1000:ELZYPTFV\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe
  "C:\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Program Files (x86)\RealtekAudio5.1\RealtekAudioi.exe

Filesize
920KB

MD5
6e8d85f01f1162a214619e5fff7c0770

SHA1
2e12ef483caaa2ad6f25fdbcbbf9e26791560c43

SHA256
da27775617ea9a84d46876fd71de1a548e5d3b0e1b505cab270afb250b596fbe

SHA512
b1cd53ddd4a33349f511f007f3ef233a6ad093f27147e56adfa669120e9d793272946211fecb41f2ca335bb908b92e576059947d77fed663d8690dd85d4756d5

Download Submit
\Users\Admin\AppData\Roaming\RealtekAudioCicle.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
memory/380-37-0x00000000043E0000-0x00000000043F0000-memory.dmp

Filesize
64KB

Download
memory/380-36-0x00000000043C0000-0x00000000043D8000-memory.dmp

Filesize
96KB

Download
memory/380-35-0x0000000004370000-0x00000000043BE000-memory.dmp

Filesize
312KB

Download
memory/380-34-0x0000000000620000-0x0000000000632000-memory.dmp

Filesize
72KB

Download
memory/380-33-0x0000000000170000-0x000000000025C000-memory.dmp

Filesize
944KB

Download
memory/2224-48-0x00000000012A0000-0x00000000012A8000-memory.dmp

Filesize
32KB

Download
memory/2820-16-0x0000000000E90000-0x0000000000E9C000-memory.dmp

Filesize
48KB

Download
memory/2820-17-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2820-20-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2820-14-0x000007FEF5453000-0x000007FEF5454000-memory.dmp

Filesize
4KB

Download
memory/2976-0-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2976-30-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2976-6-0x00000000005F0000-0x00000000005F8000-memory.dmp

Filesize
32KB

Download
memory/2976-5-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/2976-4-0x0000000001020000-0x000000000107C000-memory.dmp

Filesize
368KB

Download
memory/2976-3-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2976-2-0x0000000000370000-0x000000000037E000-memory.dmp

Filesize
56KB

Download
memory/2976-1-0x0000000001240000-0x000000000132C000-memory.dmp

Filesize
944KB

Download