orcus | 61dc38d73e81f8609da4308ae6b00e67aadac9b97f9718fa0df983a857de078e

General

Target

7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
Size

905KB
MD5

7ca07775b734205bd82bd227061e80d7
SHA1

fdbe03348b660c021b0fa112f233fc8a5c1f107b
SHA256

61dc38d73e81f8609da4308ae6b00e67aadac9b97f9718fa0df983a857de078e
SHA512

19787a2c669c4319692e9be7e71857659a5d1f3336bfbe8f30166633613a499c36ca1674fde6728e521925271c7937b7730eabee6e0b8fe2c5eeb5c302518968
SSDEEP

24576:4554MROxnFMptJSJrrcI0AilFEvxHPZsLooS:4QMiqTSJrrcI0AilFEvxHPZ

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

84.201.188.25:7007

Mutex

c3df045112bb4e98baaf9d5767edb094

Attributes

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

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016332-15.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2852-18-0x0000000000AD0000-0x0000000000BB8000-memory.dmp	orcus
behavioral1/files/0x0009000000016332-15.dat	orcus
behavioral1/memory/1728-1-0x0000000000270000-0x0000000000358000-memory.dmp	orcus

Executes dropped EXE 1 IoCs

pid	Process
2852	mctsk.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Discord = "\"C:\\Program Files (x86)\\mctsk.exe\""	mctsk.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\mctsk.exe	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\mctsk.exe	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
File created	C:\Program Files (x86)\mctsk.exe.config	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	mctsk.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2852	mctsk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2852	1728	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	28
PID 1728 wrote to memory of 2852	1728	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	28
PID 1728 wrote to memory of 2852	1728	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	28
PID 1728 wrote to memory of 2852	1728	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Program Files (x86)\mctsk.exe
  "C:\Program Files (x86)\mctsk.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\mctsk.exe

Filesize
905KB

MD5
7ca07775b734205bd82bd227061e80d7

SHA1
fdbe03348b660c021b0fa112f233fc8a5c1f107b

SHA256
61dc38d73e81f8609da4308ae6b00e67aadac9b97f9718fa0df983a857de078e

SHA512
19787a2c669c4319692e9be7e71857659a5d1f3336bfbe8f30166633613a499c36ca1674fde6728e521925271c7937b7730eabee6e0b8fe2c5eeb5c302518968

Download Submit
C:\Program Files (x86)\mctsk.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/1728-1-0x0000000000270000-0x0000000000358000-memory.dmp

Filesize
928KB

Download
memory/1728-4-0x0000000000B80000-0x0000000000BDC000-memory.dmp

Filesize
368KB

Download
memory/1728-0-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

Filesize
4KB

Download
memory/1728-16-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-2-0x0000000000200000-0x000000000020E000-memory.dmp

Filesize
56KB

Download
memory/1728-3-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-5-0x0000000000460000-0x0000000000472000-memory.dmp

Filesize
72KB

Download
memory/2852-19-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-20-0x00000000041E0000-0x000000000422E000-memory.dmp

Filesize
312KB

Download
memory/2852-18-0x0000000000AD0000-0x0000000000BB8000-memory.dmp

Filesize
928KB

Download
memory/2852-21-0x00000000008B0000-0x00000000008C8000-memory.dmp

Filesize
96KB

Download
memory/2852-17-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-22-0x0000000000A20000-0x0000000000A30000-memory.dmp

Filesize
64KB

Download
memory/2852-23-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads