Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    07-09-2021 06:09

General

  • Target

    b77f695ff45d0ae0eeafef3dd41ae7c89bc56036a3ef0f4168509bae54c8db9c.exe

  • Size

    942KB

  • MD5

    33889f086935081da3fd8331871d4984

  • SHA1

    31648aa325742695ce8e9c23115235f2d2816248

  • SHA256

    b77f695ff45d0ae0eeafef3dd41ae7c89bc56036a3ef0f4168509bae54c8db9c

  • SHA512

    7fb2b6aec4a9134e88a1adc4247f3dab2841a70637cda87a8f2e2470b61a105d361bc749fc93178bc60627860b1f618eef9817ce3e1c03895bdd96e6e6a381ce

Score
10/10

Malware Config

Signatures

  • Ammyy Admin

    Remote admin tool with various capabilities.

  • AmmyyAdmin Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b77f695ff45d0ae0eeafef3dd41ae7c89bc56036a3ef0f4168509bae54c8db9c.exe
    "C:\Users\Admin\AppData\Local\Temp\b77f695ff45d0ae0eeafef3dd41ae7c89bc56036a3ef0f4168509bae54c8db9c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Users\Admin\AppData\Local\Temp\budha.exe
      "C:\Users\Admin\AppData\Local\Temp\budha.exe"
      2⤵
      • Executes dropped EXE
      PID:2672

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    8136552415eb9ab52d1f88fc08c7db30

    SHA1

    fbe237761b472fe73636d7324d1c61a06e56d401

    SHA256

    21080b21270a803f132267a20cf8293c9468d87b860eba8d16bbd04bbc08328e

    SHA512

    84c9bc1a61f63d279434d2a0d2ef66e9d5a57017f350e92ffc6f96622bcb3e63087fda80490007b7a996724b6d695c71b3b8e2bdba4dbc02f85befa83b811fe0

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

    MD5

    8136552415eb9ab52d1f88fc08c7db30

    SHA1

    fbe237761b472fe73636d7324d1c61a06e56d401

    SHA256

    21080b21270a803f132267a20cf8293c9468d87b860eba8d16bbd04bbc08328e

    SHA512

    84c9bc1a61f63d279434d2a0d2ef66e9d5a57017f350e92ffc6f96622bcb3e63087fda80490007b7a996724b6d695c71b3b8e2bdba4dbc02f85befa83b811fe0

  • memory/2672-115-0x0000000000000000-mapping.dmp

  • memory/2672-119-0x0000000002530000-0x0000000002930000-memory.dmp

    Filesize

    4.0MB

  • memory/2672-121-0x00000000021E0000-0x00000000021E1000-memory.dmp

    Filesize

    4KB

  • memory/3992-118-0x0000000002320000-0x0000000002321000-memory.dmp

    Filesize

    4KB

  • memory/3992-120-0x0000000002670000-0x0000000002A70000-memory.dmp

    Filesize

    4.0MB