orcus | 26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/01/2025, 01:23

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General

Target

26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
Size

924KB
MD5

d4c903dd16913f5133997999e217a079
SHA1

7a73a4e1d55c4265b3b5449b7a64fa08e18a7273
SHA256

26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b
SHA512

cb6be573946d278c814aeffe5a67e4473b7b5037191ca0de65003170744125f466b78c3ae47cd92c3ab66514a0659dee3794be086786e495310b58dc02c54e3f
SSDEEP

24576:dGq4MROxnFE33O3orrcI0AilFEvxHPXoop:duMiuMorrcI0AilFEvxHP

Score

10^/10

orcus test_one discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Test_one

192.168.11.172:55505

Mutex

8e30ae40441e44d7964395f4918297b2

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\Realtek\Realtek.exe
reconnect_delay
10000
registry_keyname
Realtek HD Audio UniversaI Service
taskscheduler_taskname
Realtek HD Audio Universal Service
watchdog_path
AppData\Realtek_audio.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x00070000000174cc-30.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/768-1-0x0000000000830000-0x000000000091E000-memory.dmp	orcus
behavioral1/files/0x00070000000174cc-30.dat	orcus
behavioral1/memory/2808-36-0x0000000000F00000-0x0000000000FEE000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
2860	WindowsInput.exe
2804	WindowsInput.exe
2808	Realtek.exe
1916	Realtek.exe
2832	Realtek_audio.exe
1676	Realtek_audio.exe

Loads dropped DLL 3 IoCs

pid	Process
768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
2808	Realtek.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.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)\Realtek\Realtek.exe	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
File opened for modification	C:\Program Files (x86)\Realtek\Realtek.exe	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
File created	C:\Program Files (x86)\Realtek\Realtek.exe.config	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.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	Realtek_audio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Realtek_audio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Realtek.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Realtek.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1676	Realtek_audio.exe
1676	Realtek_audio.exe
1676	Realtek_audio.exe
2808	Realtek.exe
2808	Realtek.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe
1676	Realtek_audio.exe
2808	Realtek.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	Realtek.exe
Token: SeDebugPrivilege	2832	Realtek_audio.exe
Token: SeDebugPrivilege	1676	Realtek_audio.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2808	Realtek.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2808	Realtek.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2808	Realtek.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 2860	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	31
PID 768 wrote to memory of 2860	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	31
PID 768 wrote to memory of 2860	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	31
PID 768 wrote to memory of 2860	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	31
PID 768 wrote to memory of 2808	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	33
PID 768 wrote to memory of 2808	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	33
PID 768 wrote to memory of 2808	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	33
PID 768 wrote to memory of 2808	768	26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe	33
PID 1800 wrote to memory of 1916	1800	taskeng.exe	35
PID 1800 wrote to memory of 1916	1800	taskeng.exe	35
PID 1800 wrote to memory of 1916	1800	taskeng.exe	35
PID 1800 wrote to memory of 1916	1800	taskeng.exe	35
PID 2808 wrote to memory of 2832	2808	Realtek.exe	36
PID 2808 wrote to memory of 2832	2808	Realtek.exe	36
PID 2808 wrote to memory of 2832	2808	Realtek.exe	36
PID 2808 wrote to memory of 2832	2808	Realtek.exe	36
PID 2832 wrote to memory of 1676	2832	Realtek_audio.exe	37
PID 2832 wrote to memory of 1676	2832	Realtek_audio.exe	37
PID 2832 wrote to memory of 1676	2832	Realtek_audio.exe	37
PID 2832 wrote to memory of 1676	2832	Realtek_audio.exe	37

C:\Users\Admin\AppData\Local\Temp\26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.exe
"C:\Users\Admin\AppData\Local\Temp\26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b.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:768
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2860
- C:\Program Files (x86)\Realtek\Realtek.exe
  "C:\Program Files (x86)\Realtek\Realtek.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - 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
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Users\Admin\AppData\Roaming\Realtek_audio.exe
    "C:\Users\Admin\AppData\Roaming\Realtek_audio.exe" /launchSelfAndExit "C:\Program Files (x86)\Realtek\Realtek.exe" 2808 /protectFile
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Users\Admin\AppData\Roaming\Realtek_audio.exe
      "C:\Users\Admin\AppData\Roaming\Realtek_audio.exe" /watchProcess "C:\Program Files (x86)\Realtek\Realtek.exe" 2808 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1676

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2804

C:\Windows\system32\taskeng.exe
taskeng.exe {E9F057AA-D0FC-473C-8438-E25B98F5EA3A} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Program Files (x86)\Realtek\Realtek.exe
  "C:\Program Files (x86)\Realtek\Realtek.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1916

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:\Program Files (x86)\Realtek\Realtek.exe

Filesize
924KB

MD5
d4c903dd16913f5133997999e217a079

SHA1
7a73a4e1d55c4265b3b5449b7a64fa08e18a7273

SHA256
26117e73d2cd9417ae54ffe789a2ff9bc71202f3d29c68b0374628cf04d9299b

SHA512
cb6be573946d278c814aeffe5a67e4473b7b5037191ca0de65003170744125f466b78c3ae47cd92c3ab66514a0659dee3794be086786e495310b58dc02c54e3f

Download Submit
C:\Users\Admin\AppData\Roaming\Orcus\err_8e30ae40441e44d7964395f4918297b2.dat

Filesize
1KB

MD5
27f9a33ab8816d2d4f6f72a57d43a14b

SHA1
1a2dabda329a41006df251487de2a75dfa6071e5

SHA256
a5cb17220d5cba011a297941c26f85e844a0c9e4ad2dfe9e5315f96bf4033ae6

SHA512
543e1b9a7049ed04f592ee492ff5e0eb8a1246eadbb88d6624343abcb6154498f6a1fd92111310a94f9fde94019db2b6f83a882f58cf0231e10c312ffc612bb7

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
memory/768-3-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/768-6-0x00000000006A0000-0x00000000006A8000-memory.dmp

Filesize
32KB

Download
memory/768-7-0x00000000007B0000-0x00000000007B8000-memory.dmp

Filesize
32KB

Download
memory/768-5-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/768-4-0x00000000021D0000-0x000000000222C000-memory.dmp

Filesize
368KB

Download
memory/768-2-0x0000000000480000-0x000000000048E000-memory.dmp

Filesize
56KB

Download
memory/768-1-0x0000000000830000-0x000000000091E000-memory.dmp

Filesize
952KB

Download
memory/768-35-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/768-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

Filesize
4KB

Download
memory/2808-36-0x0000000000F00000-0x0000000000FEE000-memory.dmp

Filesize
952KB

Download
memory/2808-39-0x0000000000A20000-0x0000000000A6E000-memory.dmp

Filesize
312KB

Download
memory/2808-40-0x0000000000A80000-0x0000000000A98000-memory.dmp

Filesize
96KB

Download
memory/2808-41-0x0000000002400000-0x0000000002410000-memory.dmp

Filesize
64KB

Download
memory/2832-52-0x0000000001120000-0x0000000001128000-memory.dmp

Filesize
32KB

Download
memory/2860-22-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-19-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-18-0x0000000000BF0000-0x0000000000BFC000-memory.dmp

Filesize
48KB

Download
memory/2860-16-0x000007FEF5BA3000-0x000007FEF5BA4000-memory.dmp

Filesize
4KB

Download