General

  • Target

    Hermaean.exe

  • Size

    1.0MB

  • Sample

    250217-ns4thazkw5

  • MD5

    a5350eaa7864ac06277c445e0f52f9d9

  • SHA1

    9a589f6dcbb0ee908a1665501b3e249a00c05db8

  • SHA256

    eab16fb9a96dba4a00c074dec9d6be01b5d93b680d69d230c21497fce96f9de5

  • SHA512

    19cbd739728359dff2932ee72bf923598fe523ed2c08fc3d42f4e535e94e8cd7b0c4165eb1f3e4b54ef96b403396571b9ce9d3042ceacb996237d78b3347e2d1

  • SSDEEP

    24576:NtLjOxH2phdL18qdTJhxEvGuw48Qw1J+FOZVKgyhz:NtLiwhd3dzxYfw4krkOZxy9

Malware Config

Targets

    • Target

      Hermaean.exe

    • Size

      1.0MB

    • MD5

      a5350eaa7864ac06277c445e0f52f9d9

    • SHA1

      9a589f6dcbb0ee908a1665501b3e249a00c05db8

    • SHA256

      eab16fb9a96dba4a00c074dec9d6be01b5d93b680d69d230c21497fce96f9de5

    • SHA512

      19cbd739728359dff2932ee72bf923598fe523ed2c08fc3d42f4e535e94e8cd7b0c4165eb1f3e4b54ef96b403396571b9ce9d3042ceacb996237d78b3347e2d1

    • SSDEEP

      24576:NtLjOxH2phdL18qdTJhxEvGuw48Qw1J+FOZVKgyhz:NtLiwhd3dzxYfw4krkOZxy9

    • Guloader family

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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 NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      7399323923e3946fe9140132ac388132

    • SHA1

      728257d06c452449b1241769b459f091aabcffc5

    • SHA256

      5a1c20a3e2e2eb182976977669f2c5d9f3104477e98f74d69d2434e79b92fdc3

    • SHA512

      d6f28ba761351f374ae007c780be27758aea7b9f998e2a88a542eede459d18700adffe71abcb52b8a8c00695efb7ccc280175b5eeb57ca9a645542edfabb64f1

    • SSDEEP

      192:eF2HS5ih/7i00dWz9T7PH6lOFcQMI5+Vw+bPFomi7dJWsP:rSUmlw9T7DmnI5+N273FP

    Score
    8/10
    • Downloads MZ/PE file

MITRE ATT&CK Enterprise v15

Tasks