Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 04:48

General

  • Target

    2024-05-31_2bf805c616d61951abb104031bef781c_avoslocker_cobalt-strike_floxif.exe

  • Size

    224KB

  • MD5

    2bf805c616d61951abb104031bef781c

  • SHA1

    adc6a773504a676167632896f664e4c6688416ce

  • SHA256

    eb9d10496fd690f74d61468e6c7e226d13e9e135371b7be6fbdd244da3bd6961

  • SHA512

    032909d9b0040b935fae352c2682f51f8161a781ad8341239e1c5a43cd46d0223e8772224348b3ccd3c4b898c00b93844223fac29d44c61d505f7fe3f79943ec

  • SSDEEP

    6144:ayi2zi7ajvRcATH2FaLw9hH4JdBV+UdvrEFp7hKAZ:ayi2zi+jvfG9hH4JdBjvrEH7T

Score
9/10
upx

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 6 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 IoCs

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

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_2bf805c616d61951abb104031bef781c_avoslocker_cobalt-strike_floxif.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_2bf805c616d61951abb104031bef781c_avoslocker_cobalt-strike_floxif.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Common Files\System\symsrv.dll

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • C:\Program Files\Common Files\System\symsrv.dll.000

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

  • memory/640-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/640-15-0x00000000006A0000-0x00000000006CB000-memory.dmp

    Filesize

    172KB

  • memory/640-16-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/640-22-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/640-26-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/640-38-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB