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Analysis

  • max time kernel
    148s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2022, 18:38

General

  • Target

    77f45b143ed15c3ff755ccb0c83d540442abd21374a93650569fdd270e3f80cc.exe

  • Size

    435KB

  • MD5

    387050f87fe3ff8dbedf3c097233a710

  • SHA1

    3d060c5c5065e44652a59d405ff4754bc88ba426

  • SHA256

    77f45b143ed15c3ff755ccb0c83d540442abd21374a93650569fdd270e3f80cc

  • SHA512

    645af124b2fcfed670c00ec9ab2a53964077936c32d1df5091310eca9075dc955465257f8b23358792c031e3348a453e7b6a4f3b31d175a4d9e4b98bc785cb56

  • SSDEEP

    3072:TSWVa1rLfhE9vDH8/Wg1kuWZyxOvxQggjbdRYEX+RotB5:fVa1rLhAeKuWZyxOqXjGsL

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates connected drives 3 TTPs 3 IoCs

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

  • Modifies WinLogon 2 TTPs 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\77f45b143ed15c3ff755ccb0c83d540442abd21374a93650569fdd270e3f80cc.exe
    "C:\Users\Admin\AppData\Local\Temp\77f45b143ed15c3ff755ccb0c83d540442abd21374a93650569fdd270e3f80cc.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1812
    • C:\Windows\sysmgr.exe
      "C:\Windows\sysmgr.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in Program Files directory
      • Drops file in Windows directory
      PID:912

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\svc.dat

    Filesize

    2KB

    MD5

    aff9b1ba045815e945bbaac4501e194d

    SHA1

    1af9db351c56ae8aea693b946a3cb3b53e140a86

    SHA256

    91a45c3cd09365eb09866a799d5837378b6bc302f98efebc6195fde60155ab5f

    SHA512

    5d4abf9d16c2972a4a27b41a6b276e99b8ddf998cdfdf3f64dd766c7b76eaf334b69b29cd0a11dbc6875be59bccf26ac70124cb8524d10307a41734dd06f64d2

  • C:\Windows\sysmgr.exe

    Filesize

    36KB

    MD5

    2373dfbdba70b54164d4fe163f7f59f1

    SHA1

    fbc51778f9e4868ddce4763d0bef4cb48090e3f6

    SHA256

    e506e529d2d1d80ba433d4dec9fcbf07506112c8d0a130bed322f03346640456

    SHA512

    32e48c596def05ddd1c987ae54cb069f750e0e4a993aa9f5c1d69e11c49ca90f6d324dfb4fa7c29c7d642eb2d939b2efe9332e0f4f4cbc5a0b2893adbf8598ec

  • C:\Windows\sysmgr.exe

    Filesize

    36KB

    MD5

    2373dfbdba70b54164d4fe163f7f59f1

    SHA1

    fbc51778f9e4868ddce4763d0bef4cb48090e3f6

    SHA256

    e506e529d2d1d80ba433d4dec9fcbf07506112c8d0a130bed322f03346640456

    SHA512

    32e48c596def05ddd1c987ae54cb069f750e0e4a993aa9f5c1d69e11c49ca90f6d324dfb4fa7c29c7d642eb2d939b2efe9332e0f4f4cbc5a0b2893adbf8598ec

  • memory/1812-54-0x0000000076091000-0x0000000076093000-memory.dmp

    Filesize

    8KB

  • memory/1812-56-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB