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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2023, 22:20

General

  • Target

    NA_0899b5cd769290exe_JC.exe

  • Size

    63KB

  • MD5

    0899b5cd769290866c5642d08db31c1b

  • SHA1

    cf6698d38713efcefe2e7940d24d1c4e27042845

  • SHA256

    1518ce880dcf50ffd3695f1a61af91802f162de772a8543a570d94348b1fa85a

  • SHA512

    f5147e6bd44509ece322dc2c62ed62caaf2245662dddf4e1eaf5262d597655fd6fe537c8f99e1d228f61ae91d1e4379e5bc518e2d87504986cf47b73be16c7e0

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAh5N:z6a+CdOOtEvwDpjQO

Score
7/10
upx

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 7 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NA_0899b5cd769290exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NA_0899b5cd769290exe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4232

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    63KB

    MD5

    b5667f052c1564d0da30dfb1f458e01c

    SHA1

    78581913d03d0cdcc367b22166f8763eecb1e17f

    SHA256

    319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89

    SHA512

    377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    63KB

    MD5

    b5667f052c1564d0da30dfb1f458e01c

    SHA1

    78581913d03d0cdcc367b22166f8763eecb1e17f

    SHA256

    319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89

    SHA512

    377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    63KB

    MD5

    b5667f052c1564d0da30dfb1f458e01c

    SHA1

    78581913d03d0cdcc367b22166f8763eecb1e17f

    SHA256

    319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89

    SHA512

    377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27

  • memory/544-133-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/544-134-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/544-135-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/544-136-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/544-151-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4232-150-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4232-153-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4232-154-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4232-160-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB