orcus | fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/03/2025, 10:59

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General

Target

fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
Size

1.1MB
MD5

6d05f3f6bf003449ecec1d7b1c03a090
SHA1

6f8c16b2dbbfb990f647dfbb20777707637cdc65
SHA256

fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088
SHA512

cc70f031102955d972826d80db163f2249d996dca53102a73afe09f68db550493077e704c07b39c7fbfd9267465e322d89ff4a383aaecf25cb4a0817080b79ba
SSDEEP

24576:f7R4MROxnFl3czErrcI0AilFEvxHPgook/IRx1FPDRyRAVy5pW:fSMir1rrcI0AilFEvxHP7/IRx1FPDRyK

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

h0metowgh0svi3ws.servequake.com:10114

Mutex

f4a241c2356f470581f678498d8553bb

Attributes

autostart_method
Disable
enable_keylogger
true
install_path
%programfiles%\winupdate\Winupdates.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
Orcus
watchdog_path
AppData\WinupdateWatchdog.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/0x0008000000016c4a-9.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2228-1-0x0000000000950000-0x0000000000A76000-memory.dmp	orcus
behavioral1/files/0x0008000000016c4a-9.dat	orcus
behavioral1/memory/2788-17-0x0000000000B50000-0x0000000000C76000-memory.dmp	orcus

Executes dropped EXE 4 IoCs

pid	Process
2788	Winupdates.exe
2772	Winupdates.exe
2904	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe

Loads dropped DLL 3 IoCs

pid	Process
2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
2788	Winupdates.exe
2904	WinupdateWatchdog.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\winupdate\Winupdates.exe	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
File opened for modification	C:\Program Files (x86)\winupdate\Winupdates.exe	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
File created	C:\Program Files (x86)\winupdate\Winupdates.exe.config	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.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	WinupdateWatchdog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winupdates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winupdates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinupdateWatchdog.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe
2788	Winupdates.exe
2620	WinupdateWatchdog.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	Winupdates.exe
Token: SeDebugPrivilege	2904	WinupdateWatchdog.exe
Token: SeDebugPrivilege	2620	WinupdateWatchdog.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2788	Winupdates.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2228 wrote to memory of 2788	2228	fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe	30
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2852 wrote to memory of 2772	2852	taskeng.exe	32
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2788 wrote to memory of 2904	2788	Winupdates.exe	33
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34
PID 2904 wrote to memory of 2620	2904	WinupdateWatchdog.exe	34

C:\Users\Admin\AppData\Local\Temp\fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe
"C:\Users\Admin\AppData\Local\Temp\fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Program Files (x86)\winupdate\Winupdates.exe
  "C:\Program Files (x86)\winupdate\Winupdates.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:2788
- - C:\Users\Admin\AppData\Roaming\WinupdateWatchdog.exe
    "C:\Users\Admin\AppData\Roaming\WinupdateWatchdog.exe" /launchSelfAndExit "C:\Program Files (x86)\winupdate\Winupdates.exe" 2788 /protectFile
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2904
  - - C:\Users\Admin\AppData\Roaming\WinupdateWatchdog.exe
      "C:\Users\Admin\AppData\Roaming\WinupdateWatchdog.exe" /watchProcess "C:\Program Files (x86)\winupdate\Winupdates.exe" 2788 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2620

C:\Windows\system32\taskeng.exe
taskeng.exe {18C47D09-5212-461A-9F11-6275866E1B20} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Program Files (x86)\winupdate\Winupdates.exe
  "C:\Program Files (x86)\winupdate\Winupdates.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2772

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)\winupdate\Winupdates.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Program Files (x86)\winupdate\Winupdates.exe

Filesize
1.1MB

MD5
6d05f3f6bf003449ecec1d7b1c03a090

SHA1
6f8c16b2dbbfb990f647dfbb20777707637cdc65

SHA256
fc3bcb43a8ba80aa5256e20adcd1a165f3d32c144d78b6bf57bafbefd25f4088

SHA512
cc70f031102955d972826d80db163f2249d996dca53102a73afe09f68db550493077e704c07b39c7fbfd9267465e322d89ff4a383aaecf25cb4a0817080b79ba

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
memory/2228-4-0x0000000001E80000-0x0000000001EDC000-memory.dmp

Filesize
368KB

Download
memory/2228-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2228-5-0x0000000000390000-0x00000000003A2000-memory.dmp

Filesize
72KB

Download
memory/2228-3-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2228-1-0x0000000000950000-0x0000000000A76000-memory.dmp

Filesize
1.1MB

Download
memory/2228-2-0x00000000002F0000-0x00000000002FE000-memory.dmp

Filesize
56KB

Download
memory/2228-13-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2788-17-0x0000000000B50000-0x0000000000C76000-memory.dmp

Filesize
1.1MB

Download
memory/2788-18-0x0000000073990000-0x000000007407E000-memory.dmp

Filesize
6.9MB

Download
memory/2788-19-0x0000000000940000-0x000000000098E000-memory.dmp

Filesize
312KB

Download
memory/2788-20-0x00000000020B0000-0x00000000020C8000-memory.dmp

Filesize
96KB

Download
memory/2788-21-0x0000000002140000-0x0000000002150000-memory.dmp

Filesize
64KB

Download
memory/2788-15-0x000000007399E000-0x000000007399F000-memory.dmp

Filesize
4KB

Download
memory/2788-35-0x000000007399E000-0x000000007399F000-memory.dmp

Filesize
4KB

Download
memory/2788-36-0x0000000073990000-0x000000007407E000-memory.dmp

Filesize
6.9MB

Download
memory/2904-32-0x0000000000100000-0x0000000000108000-memory.dmp

Filesize
32KB

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