Analysis

  • max time kernel
    165s
  • max time network
    187s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:46

General

  • Target

    bd485ac49721c06bddea47b14aaaaf55c7d350ecf6d1401b5ff199844f878ee3.exe

  • Size

    203KB

  • MD5

    f7ac2169bab58efd4d196b4418f95e03

  • SHA1

    709b25a30a6504d589b8f6ff2d3dba0c32680f38

  • SHA256

    bd485ac49721c06bddea47b14aaaaf55c7d350ecf6d1401b5ff199844f878ee3

  • SHA512

    6a35354efd59b65097551a443d4d313682190aef63a60449c535c49ab72cba12c7d081bbc23d5ef63899ee394880c481cc6786563fa2c7ed23c23c98ed57fccf

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 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd485ac49721c06bddea47b14aaaaf55c7d350ecf6d1401b5ff199844f878ee3.exe
    "C:\Users\Admin\AppData\Local\Temp\bd485ac49721c06bddea47b14aaaaf55c7d350ecf6d1401b5ff199844f878ee3.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:1664
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ARP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9BE3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1508
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ARP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD24F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1804

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\tmp9BE3.tmp
    Filesize

    1KB

    MD5

    90cf6f4d15c1ebd22e4903ffc5db6832

    SHA1

    3087ddc093e202fdc410a222b0d033cbaf7abce6

    SHA256

    54e63d9cb5497d38751eda7541bff808602fd73e452b5b10bb4963d1740ff62d

    SHA512

    7a8ac85a0adc8d82da7bbabcaf8aadb6b02f5550069420532b2f249e4794621e00acd05919008a03484757d53c0d34ec1092c657241b097c47e99f444b682686

  • memory/1508-56-0x0000000000000000-mapping.dmp
  • memory/1664-54-0x0000000075721000-0x0000000075723000-memory.dmp
    Filesize

    8KB

  • memory/1664-55-0x00000000744D0000-0x0000000074A7B000-memory.dmp
    Filesize

    5.7MB

  • memory/1804-58-0x0000000000000000-mapping.dmp