Overview

overview

8

Static

static

3

tinytask.exe

windows10-2004-x64

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General

  • Target

    tinytask.exe

  • Size

    35KB

  • Sample

    240420-bww7lsdg7v

  • MD5

    8fd3551654f0f5281ddbd7e32cb73054

  • SHA1

    9b1c9722847cd57cd11e4de80cd9e8197c3c34cd

  • SHA256

    75e06ac5b7c1adb01ab994633466685e3dcef31d635eba1734fe16c7893ffe12

  • SHA512

    a716f535e363fc1225b1665e1c24693e768d13699ea37bdf57effe4fea24b4b30a2181174f66c35e749b9c845b07f82eecbf282ee5972de0426f847293d46b4b

  • SSDEEP

    768:sAzGzd0LnFjuwY6QlVwvHI1pSgNEl/MYoeAW:5zGzd0wXlVwv0SgNQXoeAW

Score
8/10
bootkitpersistence

Malware Config

Targets

    • Target

      tinytask.exe

    • Size

      35KB

    • MD5

      8fd3551654f0f5281ddbd7e32cb73054

    • SHA1

      9b1c9722847cd57cd11e4de80cd9e8197c3c34cd

    • SHA256

      75e06ac5b7c1adb01ab994633466685e3dcef31d635eba1734fe16c7893ffe12

    • SHA512

      a716f535e363fc1225b1665e1c24693e768d13699ea37bdf57effe4fea24b4b30a2181174f66c35e749b9c845b07f82eecbf282ee5972de0426f847293d46b4b

    • SSDEEP

      768:sAzGzd0LnFjuwY6QlVwvHI1pSgNEl/MYoeAW:5zGzd0wXlVwv0SgNQXoeAW

    Score
    8/10
    bootkitpersistence

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence
    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks