orcus | 28506529f97de0d6a877427c102e62425f63c764dd2d55f4510dcc5d49335085

Analysis

max time kernel
151s
max time network
139s
platform
windows7_x64
resource
win7v20210408
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 4 IoCs

resource	yara_rule
behavioral1/files/0x00040000000130cc-65.dat	family_orcus
behavioral1/files/0x00040000000130cc-67.dat	family_orcus
behavioral1/files/0x00040000000130cc-69.dat	family_orcus
behavioral1/files/0x00040000000130cc-93.dat	family_orcus

Orcurs Rat Executable 4 IoCs

resource	yara_rule
behavioral1/files/0x00040000000130cc-65.dat	orcus
behavioral1/files/0x00040000000130cc-67.dat	orcus
behavioral1/files/0x00040000000130cc-69.dat	orcus
behavioral1/files/0x00040000000130cc-93.dat	orcus

Executes dropped EXE 4 IoCs

pid	Process
520	WindowsUserApplicationData.exe
1652	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
108	WindowsUserApplicationData.exe

Drops startup file 3 IoCs

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

Loads dropped DLL 3 IoCs

pid	Process
940	25BE4FB3B1C478E02194503047AC838A.exe
520	WindowsUserApplicationData.exe
1652	WindowsUserApplicationData.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-1-5-21-2455352368-1077083310-2879168483-1000\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

pid	Process
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe
1264	WindowsUserApplicationData.exe
520	WindowsUserApplicationData.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	520	WindowsUserApplicationData.exe
Token: SeDebugPrivilege	1652	WindowsUserApplicationData.exe
Token: SeDebugPrivilege	1264	WindowsUserApplicationData.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 520	940	25BE4FB3B1C478E02194503047AC838A.exe	26
PID 940 wrote to memory of 520	940	25BE4FB3B1C478E02194503047AC838A.exe	26
PID 940 wrote to memory of 520	940	25BE4FB3B1C478E02194503047AC838A.exe	26
PID 940 wrote to memory of 520	940	25BE4FB3B1C478E02194503047AC838A.exe	26
PID 520 wrote to memory of 1652	520	WindowsUserApplicationData.exe	27
PID 520 wrote to memory of 1652	520	WindowsUserApplicationData.exe	27
PID 520 wrote to memory of 1652	520	WindowsUserApplicationData.exe	27
PID 520 wrote to memory of 1652	520	WindowsUserApplicationData.exe	27
PID 1652 wrote to memory of 1264	1652	WindowsUserApplicationData.exe	28
PID 1652 wrote to memory of 1264	1652	WindowsUserApplicationData.exe	28
PID 1652 wrote to memory of 1264	1652	WindowsUserApplicationData.exe	28
PID 1652 wrote to memory of 1264	1652	WindowsUserApplicationData.exe	28
PID 1740 wrote to memory of 108	1740	taskeng.exe	32
PID 1740 wrote to memory of 108	1740	taskeng.exe	32
PID 1740 wrote to memory of 108	1740	taskeng.exe	32
PID 1740 wrote to memory of 108	1740	taskeng.exe	32

C:\Users\Admin\AppData\Local\Temp\25BE4FB3B1C478E02194503047AC838A.exe
"C:\Users\Admin\AppData\Local\Temp\25BE4FB3B1C478E02194503047AC838A.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:940
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:520
- - 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" 520
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1652
  - - 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" 520
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1264

C:\Windows\system32\taskeng.exe
taskeng.exe {FB6D90E3-DDE4-4D9E-BB1E-067E18F6E4BE} S-1-5-21-2455352368-1077083310-2879168483-1000:QWOCTUPM\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1740
- 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
  PID:108

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

memory/108-98-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

Filesize
4KB

Download
memory/520-78-0x0000000002090000-0x000000000209C000-memory.dmp

Filesize
48KB

Download
memory/520-77-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/520-99-0x0000000004975000-0x0000000004986000-memory.dmp

Filesize
68KB

Download
memory/520-76-0x0000000004970000-0x0000000004971000-memory.dmp

Filesize
4KB

Download
memory/520-75-0x0000000004700000-0x0000000004748000-memory.dmp

Filesize
288KB

Download
memory/520-70-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/940-63-0x00000000002E0000-0x000000000033A000-memory.dmp

Filesize
360KB

Download
memory/940-61-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

Filesize
4KB

Download
memory/940-62-0x0000000000240000-0x000000000024C000-memory.dmp

Filesize
48KB

Download
memory/940-59-0x0000000001350000-0x0000000001351000-memory.dmp

Filesize
4KB

Download
memory/940-64-0x0000000000940000-0x0000000000950000-memory.dmp

Filesize
64KB

Download
memory/1652-86-0x0000000075051000-0x0000000075053000-memory.dmp

Filesize
8KB

Download
memory/1652-84-0x0000000001210000-0x0000000001211000-memory.dmp

Filesize
4KB

Download