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Analysis

  • max time kernel
    149s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 14:33

General

  • Target

    8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe

  • Size

    134KB

  • MD5

    f9084ae207fd883f37ac1b527290380d

  • SHA1

    ae926055612709498ad0e782fedab37d16035b70

  • SHA256

    8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e

  • SHA512

    4d5a25c00ddd1b499c0e7cec8799c37f0c32a18a364e345478f97761daa5e34b42c3ad45dc9b01d84d19221679dde79776b710798e873b5178bec2d4f0cb00e5

  • SSDEEP

    3072:aniXS4Rz+mbvUif3yRauPxshFUf8W9trM:znYLiuauPxsRYtY

Score
8/10

Malware Config

Signatures

  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
    "C:\Users\Admin\AppData\Local\Temp\8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe"
    1⤵
    • Sets DLL path for service in the registry
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    PID:2120
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
    1⤵
    • Loads dropped DLL
    PID:4192

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Infotmp.txt

    Filesize

    720B

    MD5

    464f8a9d0e9021495cd1b6dd187e599c

    SHA1

    e4bd77050f3b91d9ed063ff3da04897778f09fb8

    SHA256

    8c15e23b4501eb6c05c2074b7a72ddb803cf99a5ba46ded30d5e819d13b9f287

    SHA512

    0fb667a5ab7af2a829118748bb917f690fcbc8a4572735e00fa855f1fc6ccff7f2c98b73704adf5062e9724f6421cb9adf3cf0a72e97b9a3e572dd9ee1bf6df1

  • C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

    Filesize

    134KB

    MD5

    65b720270d0a8bc16a70859343599472

    SHA1

    5547f094248e71d108b64b04415379bba30cf3b9

    SHA256

    de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

    SHA512

    0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

  • \??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

    Filesize

    134KB

    MD5

    65b720270d0a8bc16a70859343599472

    SHA1

    5547f094248e71d108b64b04415379bba30cf3b9

    SHA256

    de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

    SHA512

    0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

  • memory/2120-132-0x0000000000DA0000-0x0000000000DC5000-memory.dmp

    Filesize

    148KB

  • memory/2120-133-0x0000000002E20000-0x0000000006E20000-memory.dmp

    Filesize

    64.0MB

  • memory/4192-137-0x0000000075090000-0x00000000750B5000-memory.dmp

    Filesize

    148KB