Overview

overview

8

Static

static

3

KakaoTalk_S8542up.exe

windows10-2004-x64

8

KakaoTalk_S8542up.exe

windows11-21h2-x64

7

$PLUGINSDI...ll.dll

windows10-2004-x64

3

$PLUGINSDI...ll.dll

windows11-21h2-x64

3

$PLUGINSDI...ns.dll

windows10-2004-x64

3

$PLUGINSDI...ns.dll

windows11-21h2-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-21h2-x64

3

$PLUGINSDI...ec.dll

windows10-2004-x64

3

$PLUGINSDI...ec.dll

windows11-21h2-x64

3

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General

  • Target
    KakaoTalk_S8542up.exe
  • Size 112.6MB
  • Sample260416-hppbraht7p
  • SHA256 62faa0e58b390e11501226bbee984d95bf329c906c31f5f436b9e72005770922
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
discoveryexecutionransomware

Malware Config

Targets

    • Target
      KakaoTalk_S8542up.exe
    • Size 112.6MB
    • SHA256 62faa0e58b390e11501226bbee984d95bf329c906c31f5f436b9e72005770922
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    discoveryexecutionransomware

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

    • Enumerates processes with tasklist

      discovery
    behavioral1behavioral2
    • Target
      $PLUGINSDIR/DcryptDll.dll
    • Size 20KB
    • SHA256 0acb047f854771e2d5f5e7a3a2c8e261c86223988b2b6b00036fe64df994b537
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3behavioral4
    • Target
      $PLUGINSDIR/InstallOptions.dll
    • Size 15KB
    • SHA256 1f8e8f336df6773d6b63bd5a7efbfc889d08888fec55da402eaf93cb950aa283
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral5behavioral6
    • Target
      $PLUGINSDIR/System.dll
    • Size 12KB
    • SHA256 acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral7behavioral8
    • Target
      $PLUGINSDIR/nsExec.dll
    • Size 7KB
    • SHA256 c1b7c3ef8b77a5bb335dc9ec9c3546b249014dde43aa2a9ed719b4d5933741df
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral10behavioral9

MITRE ATT&CK Enterprise v16

Tasks