orcus | 28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085

Analysis

max time kernel
150s
max time network
157s
platform
windows10_x64
resource
win10v20210410
submitted
29-06-2021 07:12

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General

Target

25BE4FB3B1C478E02194503047AC838A.exe
Size

911KB
MD5

25be4fb3b1c478e02194503047ac838a
SHA1

a4223aa801bae210d077ea9c30835bdd3a82aa22
SHA256

28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085
SHA512

67cf89cd1d3592044d878f4876a2f7a2a2e8412ec13c16b977b2ba8512cd94970c8058479e39c436691d1c95f3c795feb9ce464cbb4923bf8e12b74c03f71df6

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

74.201.28.60:4296

Mutex

Hysteria4

Attributes

autostart_method
Registry
enable_keylogger
false
install_path
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe
reconnect_delay
10000
registry_keyname
Hysteria
taskscheduler_taskname
Hysteria
watchdog_path
AppData\WindowsUserApplicationData.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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	family_orcus
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	family_orcus
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	family_orcus

Orcurs Rat Executable 3 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	orcus
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	orcus
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	orcus

Executes dropped EXE 4 IoCs

Processes:

WindowsUserApplicationData.exeWindowsUserApplicationData.exeWindowsUserApplicationData.exeWindowsUserApplicationData.exe

pid process

3944 WindowsUserApplicationData.exe
3148 WindowsUserApplicationData.exe
3396 WindowsUserApplicationData.exe
3992 WindowsUserApplicationData.exe

Drops startup file 3 IoCs

Processes:

25BE4FB3B1C478E02194503047AC838A.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	25BE4FB3B1C478E02194503047AC838A.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe	25BE4FB3B1C478E02194503047AC838A.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe.config	25BE4FB3B1C478E02194503047AC838A.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WindowsUserApplicationData.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hysteria = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\O\\WindowsUserApplicationData.exe\""	WindowsUserApplicationData.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

Processes:

WindowsUserApplicationData.exeWindowsUserApplicationData.exe

pid	process
3944	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe
3944	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WindowsUserApplicationData.exeWindowsUserApplicationData.exeWindowsUserApplicationData.exe

description	pid	process
Token: SeDebugPrivilege	3944	WindowsUserApplicationData.exe
Token: SeDebugPrivilege	3396	WindowsUserApplicationData.exe
Token: SeDebugPrivilege	3992	WindowsUserApplicationData.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

25BE4FB3B1C478E02194503047AC838A.exeWindowsUserApplicationData.exeWindowsUserApplicationData.exe

description	pid	process	target process
PID 3188 wrote to memory of 3944	3188	25BE4FB3B1C478E02194503047AC838A.exe	WindowsUserApplicationData.exe
PID 3188 wrote to memory of 3944	3188	25BE4FB3B1C478E02194503047AC838A.exe	WindowsUserApplicationData.exe
PID 3188 wrote to memory of 3944	3188	25BE4FB3B1C478E02194503047AC838A.exe	WindowsUserApplicationData.exe
PID 3944 wrote to memory of 3396	3944	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe
PID 3944 wrote to memory of 3396	3944	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe
PID 3944 wrote to memory of 3396	3944	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe
PID 3396 wrote to memory of 3992	3396	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe
PID 3396 wrote to memory of 3992	3396	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe
PID 3396 wrote to memory of 3992	3396	WindowsUserApplicationData.exe	WindowsUserApplicationData.exe

C:\Users\Admin\AppData\Local\Temp\25BE4FB3B1C478E02194503047AC838A.exe
"C:\Users\Admin\AppData\Local\Temp\25BE4FB3B1C478E02194503047AC838A.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3944
- - C:\Users\Admin\AppData\Roaming\WindowsUserApplicationData.exe
    "C:\Users\Admin\AppData\Roaming\WindowsUserApplicationData.exe" /launchSelfAndExit "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe" 3944
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3396
  - - C:\Users\Admin\AppData\Roaming\WindowsUserApplicationData.exe
      "C:\Users\Admin\AppData\Roaming\WindowsUserApplicationData.exe" /watchProcess "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe" 3944
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3992

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe"
1⤵
- Executes dropped EXE
PID:3148

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\WindowsUserApplicationData.exe.log

MD5
605f809fab8c19729d39d075f7ffdb53

SHA1
c546f877c9bd53563174a90312a8337fdfc5fdd9

SHA256
6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

SHA512
82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe

MD5
25be4fb3b1c478e02194503047ac838a

SHA1
a4223aa801bae210d077ea9c30835bdd3a82aa22

SHA256
28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085

SHA512
67cf89cd1d3592044d878f4876a2f7a2a2e8412ec13c16b977b2ba8512cd94970c8058479e39c436691d1c95f3c795feb9ce464cbb4923bf8e12b74c03f71df6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe

MD5
25be4fb3b1c478e02194503047ac838a

SHA1
a4223aa801bae210d077ea9c30835bdd3a82aa22

SHA256
28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085

SHA512
67cf89cd1d3592044d878f4876a2f7a2a2e8412ec13c16b977b2ba8512cd94970c8058479e39c436691d1c95f3c795feb9ce464cbb4923bf8e12b74c03f71df6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe

MD5
25be4fb3b1c478e02194503047ac838a

SHA1
a4223aa801bae210d077ea9c30835bdd3a82aa22

SHA256
28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085

SHA512
67cf89cd1d3592044d878f4876a2f7a2a2e8412ec13c16b977b2ba8512cd94970c8058479e39c436691d1c95f3c795feb9ce464cbb4923bf8e12b74c03f71df6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\O\WindowsUserApplicationData.exe.config

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/3148-145-0x00000000051E0000-0x00000000051E1000-memory.dmp

Filesize
4KB

Download
memory/3188-119-0x00000000053C0000-0x00000000053C1000-memory.dmp

Filesize
4KB

Download
memory/3188-114-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/3188-121-0x0000000004F40000-0x0000000004F50000-memory.dmp

Filesize
64KB

Download
memory/3188-120-0x0000000004F60000-0x0000000004F61000-memory.dmp

Filesize
4KB

Download
memory/3188-118-0x0000000004E60000-0x0000000004EBA000-memory.dmp

Filesize
360KB

Download
memory/3188-117-0x00000000029E0000-0x00000000029EC000-memory.dmp

Filesize
48KB

Download
memory/3188-116-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download
memory/3396-150-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/3396-146-0x0000000000000000-mapping.dmp

Download
memory/3944-122-0x0000000000000000-mapping.dmp

Download
memory/3944-160-0x0000000007900000-0x0000000007901000-memory.dmp

Filesize
4KB

Download
memory/3944-143-0x0000000006710000-0x0000000006711000-memory.dmp

Filesize
4KB

Download
memory/3944-142-0x0000000006540000-0x000000000654C000-memory.dmp

Filesize
48KB

Download
memory/3944-164-0x0000000001813000-0x0000000001815000-memory.dmp

Filesize
8KB

Download
memory/3944-137-0x0000000006390000-0x00000000063A5000-memory.dmp

Filesize
84KB

Download
memory/3944-133-0x0000000005CE0000-0x0000000005D28000-memory.dmp

Filesize
288KB

Download
memory/3944-157-0x00000000076E0000-0x00000000076E1000-memory.dmp

Filesize
4KB

Download
memory/3944-158-0x0000000007E90000-0x0000000007E91000-memory.dmp

Filesize
4KB

Download
memory/3944-159-0x00000000078A0000-0x00000000078A1000-memory.dmp

Filesize
4KB

Download
memory/3944-144-0x0000000001810000-0x0000000001811000-memory.dmp

Filesize
4KB

Download
memory/3944-161-0x0000000007940000-0x0000000007941000-memory.dmp

Filesize
4KB

Download
memory/3944-162-0x0000000007AB0000-0x0000000007AB1000-memory.dmp

Filesize
4KB

Download
memory/3944-163-0x00000000084A0000-0x00000000084A1000-memory.dmp

Filesize
4KB

Download
memory/3992-152-0x0000000000000000-mapping.dmp

Download

pid	process
3944	WindowsUserApplicationData.exe
3148	WindowsUserApplicationData.exe
3396	WindowsUserApplicationData.exe
3992	WindowsUserApplicationData.exe