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Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2023, 05:55

General

  • Target

    008100179377_INV_AWB_20230329.exe

  • Size

    339KB

  • MD5

    8ee10213a8319fdec8c2229e264a01d4

  • SHA1

    c4e084201355eb124444d2ef58e049386fd0fb39

  • SHA256

    4506e6e700c4e9b899f09c826a0d34a4a601654ce891dec0fe5a62dbb89f82e7

  • SHA512

    5f1ff49411157502a73b89e481f69d35c710e9d4b9340beadd5b92ac59ecc3ff7347597ac42c65393bc9b32821b8f4b86bf5135f28450fb55812a4f0dd1c4298

  • SSDEEP

    6144:yPXlu0E/c84v3K/qVkEizYgANMNMK9QlOMMWVJvVyn2hsXWyVjrKr:5/GvK/qDiLBKfIWVJvV6C/ypa

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\008100179377_INV_AWB_20230329.exe
    "C:\Users\Admin\AppData\Local\Temp\008100179377_INV_AWB_20230329.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\008100179377_INV_AWB_20230329.exe
      "C:\Users\Admin\AppData\Local\Temp\008100179377_INV_AWB_20230329.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:768

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsy9B4.tmp\System.dll

    Filesize

    11KB

    MD5

    fccff8cb7a1067e23fd2e2b63971a8e1

    SHA1

    30e2a9e137c1223a78a0f7b0bf96a1c361976d91

    SHA256

    6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

    SHA512

    f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

  • memory/768-66-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/768-67-0x0000000001470000-0x0000000002DD1000-memory.dmp

    Filesize

    25.4MB

  • memory/768-68-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/768-88-0x0000000001470000-0x0000000002DD1000-memory.dmp

    Filesize

    25.4MB

  • memory/1712-64-0x0000000003780000-0x00000000050E1000-memory.dmp

    Filesize

    25.4MB

  • memory/1712-65-0x0000000003780000-0x00000000050E1000-memory.dmp

    Filesize

    25.4MB