Resubmissions

22-10-2024 00:01

241022-abbvhawflk 10

21-10-2024 23:58

241021-31jwmawelj 8

21-10-2024 23:55

241021-3yrhpatgka 6

General

  • Target

    WaveInstaller.exe

  • Size

    2.3MB

  • Sample

    241022-abbvhawflk

  • MD5

    215d509bc217f7878270c161763b471e

  • SHA1

    bfe0a2580d54cfa28d3ff5ef8dc754fdc73adcd9

  • SHA256

    984dfc64c10f96c5350d6d9216a5d7abfece1658dfc93925f7a6b0c80817c886

  • SHA512

    68e615dfcb1b7770ad64175438a913744c14bdd3af93b339c2b526271bdd0d23334e78d049fdae8ca9fe66672a8cf252ebf891be9ab6c46a3d8f1fb00fa8c83b

  • SSDEEP

    49152:LinbT3qpTDQSmanAmwJAaDMg33U2pLOiniT:LinKpTJmWAmmAMP8in

Malware Config

Targets

    • Target

      WaveInstaller.exe

    • Size

      2.3MB

    • MD5

      215d509bc217f7878270c161763b471e

    • SHA1

      bfe0a2580d54cfa28d3ff5ef8dc754fdc73adcd9

    • SHA256

      984dfc64c10f96c5350d6d9216a5d7abfece1658dfc93925f7a6b0c80817c886

    • SHA512

      68e615dfcb1b7770ad64175438a913744c14bdd3af93b339c2b526271bdd0d23334e78d049fdae8ca9fe66672a8cf252ebf891be9ab6c46a3d8f1fb00fa8c83b

    • SSDEEP

      49152:LinbT3qpTDQSmanAmwJAaDMg33U2pLOiniT:LinKpTJmWAmmAMP8in

    • CryptoLocker

      Ransomware family with multiple variants.

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (530) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks