orcus | 047bc779d007d921cc2f900677a532a9393b99633ace127bb489ac5732c1abc0

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/03/2025, 23:35

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General

Target

ArtyxBootstrapper.exe
Size

917KB
MD5

21879687876665cd12d25a9428568463
SHA1

71fecc06e0c6070b1290c1e173df11455a38f131
SHA256

047bc779d007d921cc2f900677a532a9393b99633ace127bb489ac5732c1abc0
SHA512

11e9b536360504960f491d85f3bfdfcef1a2071bf3c79c5b2a857aab6db98ec6be2f7c4a3a75ddcce21a96ada8686301345c6eedb5ead26a8509368f67ac5e77
SSDEEP

24576:kKa4MROxnFZx3eRM4LrrcI0AilFEvxHPGoop:kOMiTJelLrrcI0AilFEvxHP

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

213.209.143.58:2095

Mutex

ea1f88a1fa7148ce8a8fded64e180068

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\Nirsoft\svchost.exe
reconnect_delay
10000
registry_keyname
Realtek Audio Driver
taskscheduler_taskname
Realtek Audio Driver
watchdog_path
AppData\hotdog.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/0x0008000000016d13-28.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2516-1-0x0000000000250000-0x000000000033C000-memory.dmp	orcus
behavioral1/files/0x0008000000016d13-28.dat	orcus
behavioral1/memory/2320-35-0x0000000000870000-0x000000000095C000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
2052	WindowsInput.exe
2908	WindowsInput.exe
2320	svchost.exe
2112	svchost.exe
1840	hotdog.exe
1428	hotdog.exe

Loads dropped DLL 3 IoCs

pid	Process
2516	ArtyxBootstrapper.exe
2516	ArtyxBootstrapper.exe
2320	svchost.exe

Drops file in System32 directory 3 IoCs

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

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Nirsoft\svchost.exe	ArtyxBootstrapper.exe
File opened for modification	C:\Program Files (x86)\Nirsoft\svchost.exe	ArtyxBootstrapper.exe
File created	C:\Program Files (x86)\Nirsoft\svchost.exe.config	ArtyxBootstrapper.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	hotdog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hotdog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ArtyxBootstrapper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
1428	hotdog.exe
2320	svchost.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe
2320	svchost.exe
1428	hotdog.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	svchost.exe
Token: SeDebugPrivilege	1840	hotdog.exe
Token: SeDebugPrivilege	1428	hotdog.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2320	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2052	2516	ArtyxBootstrapper.exe	30
PID 2516 wrote to memory of 2052	2516	ArtyxBootstrapper.exe	30
PID 2516 wrote to memory of 2052	2516	ArtyxBootstrapper.exe	30
PID 2516 wrote to memory of 2052	2516	ArtyxBootstrapper.exe	30
PID 2516 wrote to memory of 2320	2516	ArtyxBootstrapper.exe	33
PID 2516 wrote to memory of 2320	2516	ArtyxBootstrapper.exe	33
PID 2516 wrote to memory of 2320	2516	ArtyxBootstrapper.exe	33
PID 2516 wrote to memory of 2320	2516	ArtyxBootstrapper.exe	33
PID 2828 wrote to memory of 2112	2828	taskeng.exe	35
PID 2828 wrote to memory of 2112	2828	taskeng.exe	35
PID 2828 wrote to memory of 2112	2828	taskeng.exe	35
PID 2828 wrote to memory of 2112	2828	taskeng.exe	35
PID 2320 wrote to memory of 1840	2320	svchost.exe	36
PID 2320 wrote to memory of 1840	2320	svchost.exe	36
PID 2320 wrote to memory of 1840	2320	svchost.exe	36
PID 2320 wrote to memory of 1840	2320	svchost.exe	36
PID 1840 wrote to memory of 1428	1840	hotdog.exe	37
PID 1840 wrote to memory of 1428	1840	hotdog.exe	37
PID 1840 wrote to memory of 1428	1840	hotdog.exe	37
PID 1840 wrote to memory of 1428	1840	hotdog.exe	37

C:\Users\Admin\AppData\Local\Temp\ArtyxBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\ArtyxBootstrapper.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:2516
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2052
- C:\Program Files (x86)\Nirsoft\svchost.exe
  "C:\Program Files (x86)\Nirsoft\svchost.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:2320
- - C:\Users\Admin\AppData\Roaming\hotdog.exe
    "C:\Users\Admin\AppData\Roaming\hotdog.exe" /launchSelfAndExit "C:\Program Files (x86)\Nirsoft\svchost.exe" 2320 /protectFile
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1840
  - - C:\Users\Admin\AppData\Roaming\hotdog.exe
      "C:\Users\Admin\AppData\Roaming\hotdog.exe" /watchProcess "C:\Program Files (x86)\Nirsoft\svchost.exe" 2320 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1428

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2908

C:\Windows\system32\taskeng.exe
taskeng.exe {923CDCDE-3083-4C80-84B3-70B32E754ABE} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Program Files (x86)\Nirsoft\svchost.exe
  "C:\Program Files (x86)\Nirsoft\svchost.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2112

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:\Users\Admin\AppData\Roaming\Nirsoft\err_ea1f88a1fa7148ce8a8fded64e180068.dat

Filesize
1KB

MD5
c1c960b3a2628575cef0ee560bee83dc

SHA1
4e14f5906432de059ae02d5b690b67bb2c3f4e58

SHA256
89b44a9bb3f98965b402e09c93f486ed85fb521496bda3e4ec5661eab982376c

SHA512
b3c630f9f6a75fdf4fcab78272669380b4b031c27098ce47c21435e2f110edc6587b05e51bf2fb417336c5fb7dad752e6834986a2063258e927224a0e039c4aa

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

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Program Files (x86)\Nirsoft\svchost.exe

Filesize
917KB

MD5
21879687876665cd12d25a9428568463

SHA1
71fecc06e0c6070b1290c1e173df11455a38f131

SHA256
047bc779d007d921cc2f900677a532a9393b99633ace127bb489ac5732c1abc0

SHA512
11e9b536360504960f491d85f3bfdfcef1a2071bf3c79c5b2a857aab6db98ec6be2f7c4a3a75ddcce21a96ada8686301345c6eedb5ead26a8509368f67ac5e77

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
memory/1840-54-0x0000000000E30000-0x0000000000E38000-memory.dmp

Filesize
32KB

Download
memory/2052-16-0x00000000001B0000-0x00000000001BC000-memory.dmp

Filesize
48KB

Download
memory/2052-20-0x000007FEF5C10000-0x000007FEF65FC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-17-0x000007FEF5C10000-0x000007FEF65FC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-14-0x000007FEF5C13000-0x000007FEF5C14000-memory.dmp

Filesize
4KB

Download
memory/2320-39-0x0000000002050000-0x000000000209E000-memory.dmp

Filesize
312KB

Download
memory/2320-41-0x0000000002210000-0x0000000002220000-memory.dmp

Filesize
64KB

Download
memory/2320-40-0x0000000002160000-0x0000000002178000-memory.dmp

Filesize
96KB

Download
memory/2320-38-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2320-35-0x0000000000870000-0x000000000095C000-memory.dmp

Filesize
944KB

Download
memory/2516-36-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2516-4-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2516-0-0x00000000742DE000-0x00000000742DF000-memory.dmp

Filesize
4KB

Download
memory/2516-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2516-6-0x0000000000420000-0x0000000000428000-memory.dmp

Filesize
32KB

Download
memory/2516-3-0x00000000007F0000-0x000000000084C000-memory.dmp

Filesize
368KB

Download
memory/2516-2-0x0000000000210000-0x000000000021E000-memory.dmp

Filesize
56KB

Download
memory/2516-1-0x0000000000250000-0x000000000033C000-memory.dmp

Filesize
944KB

Download
memory/2908-22-0x0000000001090000-0x000000000109C000-memory.dmp

Filesize
48KB

Download