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Overview

overview

9

Static

static

3

3b672e22ae...8N.exe

windows7-x64

9

3b672e22ae...8N.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09/10/2024, 11:09

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General

  • Target

    3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe

  • Size

    2.4MB

  • MD5

    396cf3b47c6bab1f66b34794ac38e130

  • SHA1

    350c33f41d187056ecaca8a81f21f7b14b9139ff

  • SHA256

    3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8

  • SHA512

    4ff32765f9a658899e53281ba55cc3be0a6075b886bc862a4b8eb70bee4a58cd341a18056bea90a6d9fb72a34abbd0392a9a0924dbd80c9413bdc215a02ccecc

  • SSDEEP

    49152:KGlWC3YlQt8CWVQ7VFGogWAcF8jH7VaOtXcZ:8Q3YI+W

Score
9/10
discoveryransomware

Malware Config

Signatures

  • Renames multiple (3776) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe
    "C:\Users\Admin\AppData\Local\Temp\3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:2168
    • C:\Users\Admin\AppData\Local\Temp\_NisSrv.exe
      "_NisSrv.exe"
      2⤵
      • Executes dropped EXE
      PID:2992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-3290804112-2823094203-3137964600-1000\desktop.ini.tmp
    Filesize

    39KB

    MD5

    7ae756bb0d5db996b762ac4595bcec03

    SHA1

    d7dad9ea61eaa32dadb3f265b43bf9ab9dc5b82f

    SHA256

    5691f4dca76249c7df24bd1a0302309964322852b14d00f27fc01482e1568639

    SHA512

    dd94a0ea33c676cfbda131255f1d09b0daa5f1acfe681ee19a909a5c2fb479024e10527ea085d3a3ea3bea2db1ffa0dd636fe05fd1f09dd16fc8e0e0fec078c5

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  • C:\Windows\SysWOW64\Zombie.exe
    Filesize

    38KB

    MD5

    4db2c8e796fe82f4abbfc6a5d87012a9

    SHA1

    777a5b53458f823eec836727169cdfb33e38f78e

    SHA256

    dbbc521378d4e38f9d3648a5e86df05e9ee0d34af3a59d743d227330efe970ab

    SHA512

    f41bf6bed7a03ff0f11680512cafe4398f407b0776ba607c24b1df18f17ccd2c1537ece6e43b9964efe3116f5d20b09866a49dc6cec19cec4de1eda1dd6b3de7

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  • \Users\Admin\AppData\Local\Temp\_NisSrv.exe
    Filesize

    2.4MB

    MD5

    826bf13d3fefe2369ceec3e679d96b7c

    SHA1

    c5fc719289ae948df373302bde739a0ac28ad573

    SHA256

    3aabfccd7697584ef580225d8a78f4b1043f319215c3cbc3c461b398ada6e0b3

    SHA512

    47d463df0b646960ae89288c95322f1e998bc479c71b2ad167ce9d194c629080628a2384c6003574aab1894a7d178b0eec3457f0d0425cc7c4ca2d67837e7e14

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