General

  • Target

    190125d18f0c710d42a53fe230fa6e18568a35150ba34e6b880fd709f0a82598

  • Size

    558KB

  • Sample

    240630-xvyvpssgpe

  • MD5

    f1be3a3edf5bf5e9343bd71cd39d6a1d

  • SHA1

    9fe9268163a4aacf93f287c5ddfe6b79a44d0688

  • SHA256

    190125d18f0c710d42a53fe230fa6e18568a35150ba34e6b880fd709f0a82598

  • SHA512

    43fa1ed4a139141a5b3967fb22b1a55d8efe68df81815f839a7638962e017f4cb6db1ab7ccea27720034946c9423c4c15fa11709a05891de5ac2e3a91020e3e7

  • SSDEEP

    12288:/m/Q6P8j/svm1TXI5tZByKLBwiZlzMB9xgndcP88DvvP:/0P8j/svqAOG6iZ2BLgndcE+vvP

Malware Config

Targets

    • Target

      190125d18f0c710d42a53fe230fa6e18568a35150ba34e6b880fd709f0a82598

    • Size

      558KB

    • MD5

      f1be3a3edf5bf5e9343bd71cd39d6a1d

    • SHA1

      9fe9268163a4aacf93f287c5ddfe6b79a44d0688

    • SHA256

      190125d18f0c710d42a53fe230fa6e18568a35150ba34e6b880fd709f0a82598

    • SHA512

      43fa1ed4a139141a5b3967fb22b1a55d8efe68df81815f839a7638962e017f4cb6db1ab7ccea27720034946c9423c4c15fa11709a05891de5ac2e3a91020e3e7

    • SSDEEP

      12288:/m/Q6P8j/svm1TXI5tZByKLBwiZlzMB9xgndcP88DvvP:/0P8j/svqAOG6iZ2BLgndcE+vvP

    • Modifies security service

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables containing bas64 encoded gzip files

    • Detects executables referencing Discord tokens regular expressions

    • Detects executables referencing credit card regular expressions

    • Detects executables referencing many VPN software clients. Observed in infosteslers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables using Telegram Chat Bot

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

8
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Tasks