Overview

overview

10

Static

static

AutoInstal...Bw.exe

windows7_x64

10

AutoInstal...Bw.exe

windows11_x64

10

AutoInstal...Bw.exe

windows10_x64

10

Sharing

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General

  • Target

    AutoInstall_zNvtuIFmBw.exe

  • Size

    734KB

  • Sample

    211128-arvybaeder

  • MD5

    f4f038efc2ad27ff5406cbdcbcb94599

  • SHA1

    7146519f2ffcb928d55ab3b66ab4572389e18fe9

  • SHA256

    5d2eb0daffb9b5b49ef89add1c9140a66acb2e354fdb97e7b46fdb92e7d63818

  • SHA512

    87f232e92e3c4afa58febce58b18e84e6274b1985b920211cd55c178015c43095236c2adf9f1b5fd8b79cf926ab8c6be0edd50a19b97d06eaa153cb7b38080b4

Score
10/10
adwarediscoverypersistencestealer

Malware Config

Targets

    • Target

      AutoInstall_zNvtuIFmBw.exe

    • Size

      734KB

    • MD5

      f4f038efc2ad27ff5406cbdcbcb94599

    • SHA1

      7146519f2ffcb928d55ab3b66ab4572389e18fe9

    • SHA256

      5d2eb0daffb9b5b49ef89add1c9140a66acb2e354fdb97e7b46fdb92e7d63818

    • SHA512

      87f232e92e3c4afa58febce58b18e84e6274b1985b920211cd55c178015c43095236c2adf9f1b5fd8b79cf926ab8c6be0edd50a19b97d06eaa153cb7b38080b4

    Score
    10/10
    adwarediscoverypersistencestealer

    • Modifies system executable filetype association

      persistence

    • Registers COM server for autorun

      persistence

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets file execution options in registry

      persistence

    • Sets service image path in registry

      persistence

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

      discovery

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

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

      stealeradware

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Change Default File Association

1
T1042

Registry Run Keys / Startup Folder

4
T1060

Browser Extensions

1
T1176

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

7
T1112

Install Root Certificate

1
T1130

Credential Access

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

2
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks