orcus | 9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

Analysis

max time kernel
150s
max time network
133s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06/03/2023, 17:48

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General

Target

cheker.exe
Size

921KB
MD5

41394beb6f31b8215c7b9d0b8d412c3e
SHA1

c0436e7d59d3be57a1edc94ce52a5e03312aa368
SHA256

9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a
SHA512

dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b
SSDEEP

24576:n6A4MROxnF43F9MQrrZlI0AilFEvxHihrTE:n6jMiG4wrZlI0AilFEvxHih

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

147.185.221.229:56094

Mutex

0a90560fd1de4ef0859fc02bececce78

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\svhost\svhost.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
Orcus
watchdog_path
AppData\svhost.exe

Signatures

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

Orcus main payload 3 IoCs

resource	yara_rule
behavioral1/files/0x000600000001414c-94.dat	family_orcus
behavioral1/files/0x000600000001414c-96.dat	family_orcus
behavioral1/files/0x000600000001414c-112.dat	family_orcus

Orcurs Rat Executable 6 IoCs

resource	yara_rule
behavioral1/memory/1108-54-0x00000000008D0000-0x00000000009BC000-memory.dmp	orcus
behavioral1/files/0x000600000001414c-94.dat	orcus
behavioral1/memory/432-97-0x00000000011E0000-0x00000000012CC000-memory.dmp	orcus
behavioral1/files/0x000600000001414c-96.dat	orcus
behavioral1/files/0x000600000001414c-112.dat	orcus
behavioral1/memory/2024-114-0x000000001B050000-0x000000001B0D0000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
1864	WindowsInput.exe
1580	WindowsInput.exe
432	svhost.exe
1356	svhost.exe
2024	svhost.exe
1324	svhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\Orcus = "\"C:\\Program Files\\svhost\\svhost.exe\""	svhost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	cheker.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	cheker.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\svhost\svhost.exe	cheker.exe
File opened for modification	C:\Program Files\svhost\svhost.exe	cheker.exe
File created	C:\Program Files\svhost\svhost.exe.config	cheker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
432	svhost.exe
432	svhost.exe
1324	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe
432	svhost.exe
1324	svhost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	svhost.exe
Token: SeDebugPrivilege	1356	svhost.exe
Token: SeDebugPrivilege	1324	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
432	svhost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 1624	1108	cheker.exe	27
PID 1108 wrote to memory of 1624	1108	cheker.exe	27
PID 1108 wrote to memory of 1624	1108	cheker.exe	27
PID 1624 wrote to memory of 520	1624	csc.exe	29
PID 1624 wrote to memory of 520	1624	csc.exe	29
PID 1624 wrote to memory of 520	1624	csc.exe	29
PID 1108 wrote to memory of 1864	1108	cheker.exe	31
PID 1108 wrote to memory of 1864	1108	cheker.exe	31
PID 1108 wrote to memory of 1864	1108	cheker.exe	31
PID 1108 wrote to memory of 432	1108	cheker.exe	33
PID 1108 wrote to memory of 432	1108	cheker.exe	33
PID 1108 wrote to memory of 432	1108	cheker.exe	33
PID 432 wrote to memory of 1356	432	svhost.exe	35
PID 432 wrote to memory of 1356	432	svhost.exe	35
PID 432 wrote to memory of 1356	432	svhost.exe	35
PID 432 wrote to memory of 1356	432	svhost.exe	35
PID 1996 wrote to memory of 2024	1996	taskeng.exe	36
PID 1996 wrote to memory of 2024	1996	taskeng.exe	36
PID 1996 wrote to memory of 2024	1996	taskeng.exe	36
PID 1356 wrote to memory of 1324	1356	svhost.exe	37
PID 1356 wrote to memory of 1324	1356	svhost.exe	37
PID 1356 wrote to memory of 1324	1356	svhost.exe	37
PID 1356 wrote to memory of 1324	1356	svhost.exe	37

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\cheker.exe
"C:\Users\Admin\AppData\Local\Temp\cheker.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\atxprgob.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES21E4.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC21E3.tmp"
    3⤵
    PID:520
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:1864
- C:\Program Files\svhost\svhost.exe
  "C:\Program Files\svhost\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Users\Admin\AppData\Roaming\svhost.exe
    "C:\Users\Admin\AppData\Roaming\svhost.exe" /launchSelfAndExit "C:\Program Files\svhost\svhost.exe" 432 /protectFile
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1356
  - - C:\Users\Admin\AppData\Roaming\svhost.exe
      "C:\Users\Admin\AppData\Roaming\svhost.exe" /watchProcess "C:\Program Files\svhost\svhost.exe" 432 "/protectFile"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1324

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:1580

C:\Windows\system32\taskeng.exe
taskeng.exe {76B25619-7331-4FAC-B9AD-72650C9D435B} S-1-5-21-2647223082-2067913677-935928954-1000:BPOQNXYB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Program Files\svhost\svhost.exe
  "C:\Program Files\svhost\svhost.exe"
  2⤵
  - Executes dropped EXE
  PID:2024

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\svhost\svhost.exe

Filesize
921KB

MD5
41394beb6f31b8215c7b9d0b8d412c3e

SHA1
c0436e7d59d3be57a1edc94ce52a5e03312aa368

SHA256
9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

SHA512
dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

Download Submit
C:\Program Files\svhost\svhost.exe

Filesize
921KB

MD5
41394beb6f31b8215c7b9d0b8d412c3e

SHA1
c0436e7d59d3be57a1edc94ce52a5e03312aa368

SHA256
9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

SHA512
dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

Download Submit
C:\Program Files\svhost\svhost.exe

Filesize
921KB

MD5
41394beb6f31b8215c7b9d0b8d412c3e

SHA1
c0436e7d59d3be57a1edc94ce52a5e03312aa368

SHA256
9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

SHA512
dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

Download Submit
C:\Program Files\svhost\svhost.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES21E4.tmp

Filesize
1KB

MD5
e93be64e0f43931bd8f3d7ca0758fee1

SHA1
46483515b1eb439f033976e3dcad8d70abb56e65

SHA256
3936e3cefa3202cf23da5291377f864e6fb405d9dbd9113da8a40b4f3816c353

SHA512
f6cbb538f2f8ad92064464feb6be9aff6d83fdf13e1e65debaa5cf798023bedf9225d61fd24f23462554663eb749b543b3a2fb4997f450b24bedb0b5ff176771

Download Submit
C:\Users\Admin\AppData\Local\Temp\atxprgob.dll

Filesize
76KB

MD5
4394bcad1e3bcf018e52d17b3aade851

SHA1
0fb4adb69efa92c270a8f1d8408cae008ad93ecd

SHA256
401457397fcd335dfb25db09e1a62c92b3dfe59adb24dbf93ce66f01f2e7f283

SHA512
f6c09f517ec73c14fbacf4749d8add4c1f56bdef715fead5ab87375ece85ea970332a485ab4a2aea76fc34f3e269a180d65b3d7a7ff976d78371d9421c1aade9

Download Submit
C:\Users\Admin\AppData\Roaming\svhost.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Roaming\svhost.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Roaming\svhost.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Roaming\svhost.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Users\Admin\AppData\Roaming\svhost\err_0a90560fd1de4ef0859fc02bececce78.dat

Filesize
1KB

MD5
fe651dc08bf638a724d62f3e59bd7921

SHA1
206baef93bdd29ef1d5ade6355ba73248c05c756

SHA256
d4d2d213df7b6b1abad2c5615fe67e3ed2e00cc8278761cac139a1e61f86c2ac

SHA512
a6af48d2e7cb7f7ae52a270a6029cb55f73c2907fbfbe9b9d16406293ae1bae932172d21d617754d2e2575caa4594b2c32f47e2272468ec31c4a1365fe07bedd

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

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

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

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

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
\??\c:\Users\Admin\AppData\Local\Temp\CSC21E3.tmp

Filesize
676B

MD5
e65ae450fd4a1d2c4c5c0983ae271305

SHA1
2f633194593b603ff6891e9667b64a374af460af

SHA256
56b0b809aa8fa7bb3ebe3e29d2047cb2870bb390bf84208c92f33526fcdcbe63

SHA512
14d2531589ef38e1802c294d1a33fdda99c6f0269693ce3026d7bb4568136195f0e98d35f0765f3c6e133280cc9c84993379077582899a3b363db4192843f4e6

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\atxprgob.0.cs

Filesize
208KB

MD5
c555d9796194c1d9a1310a05a2264e08

SHA1
82641fc4938680519c3b2e925e05e1001cbd71d7

SHA256
ccbb8fd27ab2f27fbbd871793886ff52ff1fbd9117c98b8d190c1a96b67e498a

SHA512
0b85ca22878998c7697c589739905b218f9b264a32c8f99a9f9dd73d0687a5de46cc7e851697ee16424baf94d301e411648aa2d061ac149a6d2e06b085e07090

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\atxprgob.cmdline

Filesize
349B

MD5
944f63e9d83c1b6f189474695c99bf90

SHA1
6b7c0905216a5caba3c18c6f6dcd28c775a698f0

SHA256
1c235c820cc54e13efc99f3e06990e370c900985eac0bfd6331a3387f111acf5

SHA512
57102d38fc12dbf7046da615eeb6a2ad73c73964b16204b04ecadc1870176d5002f27981ce5acda33d00afa3efb121a1c39b6cbf794f99b57895f5ef1bda880d

Download Submit
memory/432-113-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/432-137-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/432-102-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/432-104-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

Filesize
64KB

Download
memory/432-97-0x00000000011E0000-0x00000000012CC000-memory.dmp

Filesize
944KB

Download
memory/432-103-0x0000000000B20000-0x0000000000B38000-memory.dmp

Filesize
96KB

Download
memory/432-98-0x00000000008D0000-0x00000000008E2000-memory.dmp

Filesize
72KB

Download
memory/432-138-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/432-101-0x0000000000AB0000-0x0000000000AFE000-memory.dmp

Filesize
312KB

Download
memory/1108-82-0x00000000020F0000-0x0000000002170000-memory.dmp

Filesize
512KB

Download
memory/1108-56-0x00000000002A0000-0x00000000002AE000-memory.dmp

Filesize
56KB

Download
memory/1108-54-0x00000000008D0000-0x00000000009BC000-memory.dmp

Filesize
944KB

Download
memory/1108-55-0x0000000002170000-0x00000000021CC000-memory.dmp

Filesize
368KB

Download
memory/1108-84-0x00000000020F0000-0x0000000002170000-memory.dmp

Filesize
512KB

Download
memory/1108-72-0x00000000020F0000-0x0000000002170000-memory.dmp

Filesize
512KB

Download
memory/1108-73-0x00000000021D0000-0x00000000021D8000-memory.dmp

Filesize
32KB

Download
memory/1108-71-0x0000000000850000-0x0000000000862000-memory.dmp

Filesize
72KB

Download
memory/1108-69-0x000000001AEA0000-0x000000001AEB6000-memory.dmp

Filesize
88KB

Download
memory/1356-116-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

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memory/1580-88-0x00000000001A0000-0x00000000001AC000-memory.dmp

Filesize
48KB

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memory/1864-83-0x0000000000DE0000-0x0000000000DEC000-memory.dmp

Filesize
48KB

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memory/2024-114-0x000000001B050000-0x000000001B0D0000-memory.dmp

Filesize
512KB

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