Analysis

  • max time kernel
    138s
  • max time network
    180s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2022 17:56

General

  • Target

    a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9.exe

  • Size

    164KB

  • MD5

    257ee727a2b01632267e2f0be7393e90

  • SHA1

    6b78740d0df0369e90917a67739091ce7ab68756

  • SHA256

    a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9

  • SHA512

    053ad7ab4d497336bbf7265d6accf82922e9d7df3e5338d793efd8d5e1b54cafc7c74218728228cebb3d61813c1a2a246e8abdc3ce4a97408200e0b4a1cb4e85

  • SSDEEP

    3072:5eRkfwLREVV1fVmUZY4Rj+dyS25Z7ixL0pJoh0:cV6V1YUZY4Rj6yS4dixL0pJo

Score
10/10

Malware Config

Signatures

  • Modifies security service 2 TTPs 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Unexpected DNS network traffic destination 9 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Modifies registry class 6 IoCs
  • NTFS ADS 18 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
    • Executes dropped EXE
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:460
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Executes dropped EXE
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1268
    • C:\Users\Admin\AppData\Local\Temp\a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9.exe
      "C:\Users\Admin\AppData\Local\Temp\a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9.exe"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1880
      • C:\Users\Admin\AppData\Local\Temp\a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9.exe
        "C:\Users\Admin\AppData\Local\Temp\a1ca0af8b287aa3a97b2051dc5bcd8507865c62b456efc3a4813657a436e01b9.exe"
        3⤵
        • Modifies security service
        • Registers COM server for autorun
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Modifies registry class
        • NTFS ADS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1092

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-18\$a31e499c3c7c222a40fd7fc6e142514c\@

    Filesize

    2KB

    MD5

    eb05a8918aad02e68aa4dac0583d8e3b

    SHA1

    eaaeb696366a2702e4ee4827c4c59a929731fed0

    SHA256

    25eb0f5a068217d070ebde698d549fea2415f94b57d3c342cc29ead8f34413a5

    SHA512

    d790082dc7ecd2464d59dcf28d657aed5473aa9a5b0c55037bfeaeacea7e7d2b6e0eb898ff4fe53f8d1625ea64d96b6ec7f370959b05dd7bec13b33a07e89649

  • C:\$Recycle.Bin\S-1-5-18\$a31e499c3c7c222a40fd7fc6e142514c\n

    Filesize

    41KB

    MD5

    fb4e3236959152a057bc6b7603c538ef

    SHA1

    b25a70c07dd2eb1c9fdf89f7a2ffc286f226edf4

    SHA256

    8244ddfcba327a3f67a5582642c53241ee5e58d75808547cd74808bcded272d0

    SHA512

    993dbfbf71394ad1f120a8687d57eac2b9a55b11b1594aadd5a8d90edc0a26e5fd21f78317d342837ce27728613b5fc9c6ea40f86d17e5c477071be84f8aa3d2

  • C:\$Recycle.Bin\S-1-5-21-2292972927-2705560509-2768824231-1000\$a31e499c3c7c222a40fd7fc6e142514c\n

    Filesize

    41KB

    MD5

    fb4e3236959152a057bc6b7603c538ef

    SHA1

    b25a70c07dd2eb1c9fdf89f7a2ffc286f226edf4

    SHA256

    8244ddfcba327a3f67a5582642c53241ee5e58d75808547cd74808bcded272d0

    SHA512

    993dbfbf71394ad1f120a8687d57eac2b9a55b11b1594aadd5a8d90edc0a26e5fd21f78317d342837ce27728613b5fc9c6ea40f86d17e5c477071be84f8aa3d2

  • C:\Windows\System32\CatRoot2\dberr.txt

    Filesize

    192KB

    MD5

    2f792de6f618c7e6e3e9893c8ae0bfb9

    SHA1

    78bed7ca4581e12b1b2010c7c6397a4a581e4ef7

    SHA256

    651c4f9df70129cd67540d6ddd71dc88ed759ab980ed0c87a85faaeeb42947fc

    SHA512

    9991ced68b10fdffb533e33e4d00fe9f14ad84e3c8ef0dad8efa5064314bcadd99ee13f25bf2066cb7be3f6bc85eb2ba7dd2bfffe93dc42f91bea6f5cce0e87d

  • \$Recycle.Bin\S-1-5-18\$a31e499c3c7c222a40fd7fc6e142514c\n

    Filesize

    41KB

    MD5

    fb4e3236959152a057bc6b7603c538ef

    SHA1

    b25a70c07dd2eb1c9fdf89f7a2ffc286f226edf4

    SHA256

    8244ddfcba327a3f67a5582642c53241ee5e58d75808547cd74808bcded272d0

    SHA512

    993dbfbf71394ad1f120a8687d57eac2b9a55b11b1594aadd5a8d90edc0a26e5fd21f78317d342837ce27728613b5fc9c6ea40f86d17e5c477071be84f8aa3d2

  • \$Recycle.Bin\S-1-5-21-2292972927-2705560509-2768824231-1000\$a31e499c3c7c222a40fd7fc6e142514c\n

    Filesize

    41KB

    MD5

    fb4e3236959152a057bc6b7603c538ef

    SHA1

    b25a70c07dd2eb1c9fdf89f7a2ffc286f226edf4

    SHA256

    8244ddfcba327a3f67a5582642c53241ee5e58d75808547cd74808bcded272d0

    SHA512

    993dbfbf71394ad1f120a8687d57eac2b9a55b11b1594aadd5a8d90edc0a26e5fd21f78317d342837ce27728613b5fc9c6ea40f86d17e5c477071be84f8aa3d2

  • memory/1092-66-0x0000000000350000-0x0000000000375000-memory.dmp

    Filesize

    148KB

  • memory/1092-67-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB

  • memory/1092-60-0x0000000000430000-0x000000000046C000-memory.dmp

    Filesize

    240KB

  • memory/1880-64-0x00000000002C0000-0x00000000002E5000-memory.dmp

    Filesize

    148KB

  • memory/1880-65-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB

  • memory/1880-71-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB