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
behavioral2/files/0x0008000000023413-13.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/956-1-0x0000000000E70000-0x0000000000F58000-memory.dmp	orcus
behavioral2/files/0x0008000000023413-13.dat	orcus

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3392	mctsk.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-1-5-21-540404634-651139247-2967210625-1000\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 opened for modification	C:\Program Files (x86)\mctsk.exe	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
File created	C:\Program Files (x86)\mctsk.exe.config	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
File created	C:\Program Files (x86)\mctsk.exe	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	3392	mctsk.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3392	mctsk.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 3392	956	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	85
PID 956 wrote to memory of 3392	956	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	85
PID 956 wrote to memory of 3392	956	7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7ca07775b734205bd82bd227061e80d7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:956
- 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:3392

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

Query Registry

1

T1012

System Information Discovery

2

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/956-4-0x00000000058C0000-0x000000000591C000-memory.dmp

Filesize
368KB

Download
memory/956-23-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/956-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/956-5-0x0000000005ED0000-0x0000000006474000-memory.dmp

Filesize
5.6MB

Download
memory/956-6-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/956-7-0x0000000005A10000-0x0000000005A22000-memory.dmp

Filesize
72KB

Download
memory/956-2-0x00000000034C0000-0x00000000034CE000-memory.dmp

Filesize
56KB

Download
memory/956-1-0x0000000000E70000-0x0000000000F58000-memory.dmp

Filesize
928KB

Download
memory/956-3-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/3392-24-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/3392-25-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/3392-27-0x0000000005CB0000-0x0000000005CC8000-memory.dmp

Filesize
96KB

Download
memory/3392-26-0x0000000006290000-0x00000000062DE000-memory.dmp

Filesize
312KB

Download
memory/3392-28-0x00000000065F0000-0x00000000067B2000-memory.dmp

Filesize
1.8MB

Download
memory/3392-29-0x0000000006440000-0x0000000006450000-memory.dmp

Filesize
64KB

Download
memory/3392-30-0x0000000006540000-0x000000000654A000-memory.dmp

Filesize
40KB

Download
memory/3392-31-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads