Analysis

  • max time kernel
    141s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:21

General

  • Target

    bfc3d9b1770eaab96c1019aba7de28e3aa3b0aa0bb3956c7ea5bb54b2fc21ed6.exe

  • Size

    203KB

  • MD5

    eb37be87a7c69cadd9a6eed850a8b44d

  • SHA1

    3f0838c84ace9827fa702e2f0e31ed3cfc3e01fa

  • SHA256

    bfc3d9b1770eaab96c1019aba7de28e3aa3b0aa0bb3956c7ea5bb54b2fc21ed6

  • SHA512

    028f67f777fba79936a9ee3ae56e1e06debda6732022db6651ce5b95c70a25f4fc53f74606720fbabab0dbe599640681aeb664147180fbb2935b3c1e5add2beb

Malware Config

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bfc3d9b1770eaab96c1019aba7de28e3aa3b0aa0bb3956c7ea5bb54b2fc21ed6.exe
    "C:\Users\Admin\AppData\Local\Temp\bfc3d9b1770eaab96c1019aba7de28e3aa3b0aa0bb3956c7ea5bb54b2fc21ed6.exe"
    1⤵
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WPA Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAA9C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2084
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WPA Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpABB7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4980

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAA9C.tmp
    Filesize

    1KB

    MD5

    cc69350c1c8eb2edd1a9aca081101db6

    SHA1

    c5385903443d4af3acaeab86de72968a437fe76c

    SHA256

    b3ebb0f09226a44c6eded05e44aa5be9a4b3e822e88f2c9bcf76d0b195a704ad

    SHA512

    456357f20a9f585040f744fa32d1be7dac59e14fde9d60fc3a76b8d48a5fde564c9ab9188a7dc93202e75b9f00bad23b79ca2ba6d160ac0358cd24eaf0750845

  • C:\Users\Admin\AppData\Local\Temp\tmpABB7.tmp
    Filesize

    1KB

    MD5

    a246b3561d823177f3586e629f144233

    SHA1

    0f05d12e55a1d2e5e6a4f307c193882fba093315

    SHA256

    6abae7707b06e52b58f537b335e367cc54b093e899d78f16e94ceaf7ceafca52

    SHA512

    4246aa9a96331e2c7e36b37fa778e31ecae055c77164e0dc673aa50cdec368f08d356ab06ef1a4540816c474828048ab1bebed7e211a4eb929f2918e1fac9c6d

  • memory/2084-131-0x0000000000000000-mapping.dmp
  • memory/2352-130-0x0000000074F30000-0x00000000754E1000-memory.dmp
    Filesize

    5.7MB

  • memory/4980-133-0x0000000000000000-mapping.dmp