Resubmissions

14-06-2023 15:31

230614-sye5jsah4z 7

13-06-2023 03:59

230613-ekd4fafb7x 7

09-06-2023 03:51

230609-eevh8sbf3z 10

09-06-2023 03:51

230609-eelw4abf3y 3

09-06-2023 03:33

230609-d4p5dabe9x 10

General

  • Target

    Cyber Security Support.exe

  • Size

    22MB

  • Sample

    230609-eevh8sbf3z

  • MD5

    8452fe515826ab6f43eff16918a40e32

  • SHA1

    64859677fd830793f787fa87c7b29f75883da5cd

  • SHA256

    49d03705739faacb94c8025aaa432597d309fe96026c97ea4f0412bbf09f7a2e

  • SHA512

    6429fa27c63290a777ab6836e7e97b552afdf396a505876fef068929af3da40be01eb505809e4e5bcbb8421ee401439e14a345854b6a17b8ffa8f43375728994

  • SSDEEP

    393216:KOTMIRuiduUzRK3oMS6smRo6SxIM/L/JUH6eBkpH1ed/cViEZs1e4Vj5NnExjuwM:Fg1Oo4WsmRorIMbJUHmpVPiE29XnExjg

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.grad-vodice.hr
  • Port:
    587
  • Username:
    marija.bilac@grad-vodice.hr
  • Password:
    pKs9zy8Nn1

Extracted

Family

cobaltstrike

C2

http://47.236.19.63:443/9Avm

Attributes
  • user_agent

    User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; MANM; MANM)

Extracted

Family

cobaltstrike

Botnet

391144938

C2

http://47.236.19.63:443/load

http://47.236.19.63:443/j.ad

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    47.236.19.63,/load

  • http_header1

    AAAABwAAAAAAAAADAAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

  • http_header2

    AAAACgAAACZDb250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL29jdGV0LXN0cmVhbQAAAAcAAAAAAAAABQAAAAJpZAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

  • http_method1

    GET

  • http_method2

    POST

  • polling_time

    60000

  • port_number

    443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC77iD7GYDOhb9ygs4RVakaD7sOXWZC+dZVhZOZPGtUEHFQf63LQpM6CXg+ELJatjhVObHenvBRznPMaEGmxjcWBCaMNqJ3cjWal0tCjGKHphpwMqnwePc2Zl9vIZaWlke/cuCwtDsniLP6xVDTKmY2lOiXbDWTOz7fnlpSJb5I1QIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /submit.php

  • user_agent

    Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)

  • watermark

    391144938

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.grad-vodice.hr
  • Port:
    587
  • Username:
    marija.bilac@grad-vodice.hr
  • Password:
    pKs9zy8Nn1
  • Email To:
    triangleshpk@skiff.com

Targets

    • Target

      Cyber Security Support.exe

    • Size

      22MB

    • MD5

      8452fe515826ab6f43eff16918a40e32

    • SHA1

      64859677fd830793f787fa87c7b29f75883da5cd

    • SHA256

      49d03705739faacb94c8025aaa432597d309fe96026c97ea4f0412bbf09f7a2e

    • SHA512

      6429fa27c63290a777ab6836e7e97b552afdf396a505876fef068929af3da40be01eb505809e4e5bcbb8421ee401439e14a345854b6a17b8ffa8f43375728994

    • SSDEEP

      393216:KOTMIRuiduUzRK3oMS6smRo6SxIM/L/JUH6eBkpH1ed/cViEZs1e4Vj5NnExjuwM:Fg1Oo4WsmRorIMbJUHmpVPiE29XnExjg

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Command-Line Interface

1
T1059

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks