Overview

overview

10

Static

static

3

DOCUMENT.exe

windows7-x64

10

DOCUMENT.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_76b900c663d3733b89501e7034a631d0

  • Size

    833KB

  • Sample

    250104-bevx8asphx

  • MD5

    76b900c663d3733b89501e7034a631d0

  • SHA1

    1d9035d223409e334177de8634ea5a2a17ab619b

  • SHA256

    8371ad57c9f598e7bad4e96b4c4e0749971cbe42cfd175b0b8dbedab90eb7bea

  • SHA512

    8e7fbe48e1e47bd5cc3074fdddba6e20f98146920e03c61586b865176718cc1bffa3367675e816ae8a66ab404eeea8eb30002eb71c4f9cf3ac3982c57d045dd7

  • SSDEEP

    12288:/b1xNYEyx0BQLeE97ySv6cl77tm78ymJ0L3GmI3IwsHgOxBZmrvoCwTW:/b1nDyxG0eSFv5l7h48aGmI/qxBCv1wC

Score
10/10
isrstealercollectiondiscoveryevasionpersistencestealertrojanupx

Malware Config

Targets

    • Target

      DOCUMENT.exe

    • Size

      941KB

    • MD5

      752ce2568a7b41a0fcbbc5f417ffccc3

    • SHA1

      864e7e6514a207df0b70066eecd6126becb1ff09

    • SHA256

      7b6570a85ef1600456266810593fd5e2de186f34ed7868ace12148ec14f8812e

    • SHA512

      70e58cde454e360df36784f48b2795a96d4f8fadc797d6667bff73a4b217518584177972398eaa5d12d082301ee8bd37c148d05b0da39ffb51b5da6650f84538

    • SSDEEP

      12288:5at0EAH49n8B7CnN/j2+T0BWLkGLbWgNIwY6Cuw78YOJEn1GUEVQqYHQFOH9LPsN:It24RNj2+TGqkOhNSu68GGUEtsh7N10N

    Score
    10/10
    isrstealercollectiondiscoveryevasionpersistencestealertrojanupx

    • ISR Stealer

      ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

      trojanstealerisrstealer

    • ISR Stealer payload

    • Isrstealer family

      isrstealer

    • Modifies visiblity of hidden/system files in Explorer

      evasion

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

      collection

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of SetThreadContext

    • UPX packed file

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

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks