Overview

overview

10

Static

static

1

fe390355d5...5f.exe

windows7-x64

10

fe390355d5...5f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    fe390355d5840bf740669121b7032e5f

  • Size

    3.4MB

  • Sample

    231222-vvtjwaeff9

  • MD5

    fe390355d5840bf740669121b7032e5f

  • SHA1

    db7c8fd4c1b2600d98e20e8301018e1a4b952444

  • SHA256

    7da69d9b2edd854e2ebd3c5123ae0fa4df058780fdea9236f412daf46ed4997b

  • SHA512

    fb073cc090ba88805c0b43f639714d393271ea7397c7af1c4c409e680d98c61fa1aa6117307d3c3e967da0cf30c3cf90ea59ed7c99e419b30b76d2c1a817980c

  • SSDEEP

    49152:kkfxaDlOo67fSWzotMT+3vQW4DMyc+7G0wHyiTXvJifxwB77xWRpt/l0Vpz1UHYV:d2qrt7T+v+7G0CJ4xwB7YN/l0VpyRO

Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Targets

    • Target

      fe390355d5840bf740669121b7032e5f

    • Size

      3.4MB

    • MD5

      fe390355d5840bf740669121b7032e5f

    • SHA1

      db7c8fd4c1b2600d98e20e8301018e1a4b952444

    • SHA256

      7da69d9b2edd854e2ebd3c5123ae0fa4df058780fdea9236f412daf46ed4997b

    • SHA512

      fb073cc090ba88805c0b43f639714d393271ea7397c7af1c4c409e680d98c61fa1aa6117307d3c3e967da0cf30c3cf90ea59ed7c99e419b30b76d2c1a817980c

    • SSDEEP

      49152:kkfxaDlOo67fSWzotMT+3vQW4DMyc+7G0wHyiTXvJifxwB77xWRpt/l0Vpz1UHYV:d2qrt7T+v+7G0CJ4xwB7YN/l0VpyRO

    Score
    10/10
    servhelperbackdoordiscoveryexploitpersistencetrojanupx

    • ServHelper

      ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

      trojanbackdoorservhelper

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Modifies RDP port number used by Windows

    • Possible privilege escalation attempt

      exploit

    • Sets DLL path for service in the registry

      persistence

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks