Overview

overview

10

Static

static

9

配達確...df.exe

windows7_x64

10

配達確...df.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    2315e9ea4b02a18e75f5c6c3f6228dd04d9fddeb27d229aa55345875a2430518

  • Size

    460KB

  • Sample

    220521-pcqsdaacbp

  • MD5

    c97d58c8dcb5572e7231b42f91413cb9

  • SHA1

    bddb515fa6059039ff221fbbd9089618a5fca010

  • SHA256

    2315e9ea4b02a18e75f5c6c3f6228dd04d9fddeb27d229aa55345875a2430518

  • SHA512

    9c12dda7e8b58c2ffee2b1e7a6868f4c97949f8405fa580068124290d7966b580536ca808a6c8ca33b9f037e3aafc2e3ad3d32668b42292f2975fab5cf20dbb8

Score
10/10
remcossmash bcoreentityratrezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

SMASH B

C2

goddywin.freedynamicdns.net:5252

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-PLP378

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Targets

    • Target

      配達確認書 PO#8018516,pdf.exe

    • Size

      398KB

    • MD5

      b12a52f0dbe23e563edd4793d001f8fd

    • SHA1

      5c7b8ceab6ec73c6ae951b4e01426d24a421fa04

    • SHA256

      a3b3bbce36f3c381e04a1a086d9ad58f31563d8f106bb1a6732cf2799ee645e0

    • SHA512

      f76ec5f22602bf37e748c43a870de8762de294a6fbb861175875979ca16349f97de7b6a2fd2e6b2664d7fc16e1a485a617cce3ba8192d88f1f5cd6c9a11178aa

    Score
    10/10
    remcossmash bcoreentityratrezer0

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

      coreentity

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • CoreCCC Packer

      Detects CoreCCC packer used to load .NET malware.

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

      rezer0

    • Checks computer location settings

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

    • Uses the VBS compiler for execution

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks