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Analysis

  • max time kernel
    138s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    22/12/2023, 13:38

General

  • Target

    a83a66b40fdc4c83d922567b0d5cc352.exe

  • Size

    133KB

  • MD5

    a83a66b40fdc4c83d922567b0d5cc352

  • SHA1

    8fd57020d4877eabd909fc83eb38a6507b6e2e35

  • SHA256

    4e6d5c6e1c83ee43cb6f48661ff2a3cd275aa7178e9f8bf505c1f51bd029e491

  • SHA512

    1ad20e8831058d4bd3152861798a78a30881cccdff2dff558efdd1fc5f139dc5cdf79c4ac32c945436937c1c7806c6f8fb2dad23c730376414d4ab5a536a2036

  • SSDEEP

    3072:PGiCcS1JwGqGziw0mkflWfjdK3WwVZ/teseUzQ:PGixS1JvF0SdCD/8sHzQ

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe
    "C:\Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3060
    • C:\Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe
      C:\Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2416

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe

    Filesize

    15KB

    MD5

    227e6cec66804bce2f3b986633785d9c

    SHA1

    7ce96b41fe44cec77750d376c3a953207d409123

    SHA256

    a0411e503614e05aa9ca59c3ba6617b7d546827ed7ac5f15010d85a2c57e5c1c

    SHA512

    d4bd5091418aaab547e1db7f5f0fab8ad023c07f3e5f8fcd0f5d24db0502cf049d0db0813a97c4c68d7c3fa405bb2b45c4f6d0abd20c58f7028e761631964c67

  • \Users\Admin\AppData\Local\Temp\a83a66b40fdc4c83d922567b0d5cc352.exe

    Filesize

    73KB

    MD5

    b8fc668a9f9961bc8ef476d91d25189b

    SHA1

    93102c3a93edcd84083a94064569945b3b5dc843

    SHA256

    1cca5560d9b8e555eb2ea8e035dafb2ee7181660c91a7cd4f800b482c40f65d0

    SHA512

    9b17263c05b2743605e2db217804d9d1421a32251ddfd9a3d7284afa1880230861a214988116ef3f56c5238c72a8e7ad14d7fb0303ca6782f429d21606236fa4

  • memory/2416-19-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2416-21-0x00000000002F0000-0x0000000000311000-memory.dmp

    Filesize

    132KB

  • memory/2416-43-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/3060-0-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/3060-4-0x00000000001F0000-0x0000000000211000-memory.dmp

    Filesize

    132KB

  • memory/3060-1-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/3060-15-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/3060-14-0x0000000002D00000-0x0000000002D86000-memory.dmp

    Filesize

    536KB

  • memory/3060-42-0x0000000002D00000-0x0000000002D86000-memory.dmp

    Filesize

    536KB