Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-02-2022 07:07

General

  • Target

    2283ad65576252b5a4f007cffb8e5d24.exe

  • Size

    1.6MB

  • MD5

    2283ad65576252b5a4f007cffb8e5d24

  • SHA1

    b5e19334955cd572e8535063a7bd38dd6561d957

  • SHA256

    60e6e0f067230326553fef06a25719c538bc8bd9c9a2de543adc3d846e121672

  • SHA512

    99a837a916feca345bb1a0e103408df782dbaafc99377f6f5e0b720b0689da12d4b674dc79ee3afc19db406bc67691ee39c3d842101a2b061b874456d2e5582a

Malware Config

Extracted

Family

cryptbot

C2

brikwl42.top

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Deletes itself 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2283ad65576252b5a4f007cffb8e5d24.exe
    "C:\Users\Admin\AppData\Local\Temp\2283ad65576252b5a4f007cffb8e5d24.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\dTHsbyqsWi & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2283ad65576252b5a4f007cffb8e5d24.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:1084

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1636-55-0x00000000005B0000-0x0000000000610000-memory.dmp
    Filesize

    384KB

  • memory/1636-56-0x0000000075801000-0x0000000075803000-memory.dmp
    Filesize

    8KB

  • memory/1636-57-0x0000000003430000-0x0000000003477000-memory.dmp
    Filesize

    284KB

  • memory/1636-63-0x0000000002630000-0x0000000002631000-memory.dmp
    Filesize

    4KB

  • memory/1636-64-0x0000000002620000-0x0000000002621000-memory.dmp
    Filesize

    4KB

  • memory/1636-65-0x0000000002680000-0x0000000002681000-memory.dmp
    Filesize

    4KB

  • memory/1636-66-0x0000000002610000-0x0000000002611000-memory.dmp
    Filesize

    4KB

  • memory/1636-67-0x00000000026A0000-0x00000000026A1000-memory.dmp
    Filesize

    4KB

  • memory/1636-68-0x0000000002650000-0x0000000002651000-memory.dmp
    Filesize

    4KB

  • memory/1636-69-0x0000000002690000-0x0000000002691000-memory.dmp
    Filesize

    4KB

  • memory/1636-70-0x0000000002670000-0x0000000002671000-memory.dmp
    Filesize

    4KB

  • memory/1636-71-0x0000000003340000-0x0000000003341000-memory.dmp
    Filesize

    4KB

  • memory/1636-72-0x0000000003330000-0x0000000003331000-memory.dmp
    Filesize

    4KB

  • memory/1636-74-0x0000000000990000-0x0000000000991000-memory.dmp
    Filesize

    4KB

  • memory/1636-73-0x00000000009A0000-0x00000000009A1000-memory.dmp
    Filesize

    4KB

  • memory/1636-76-0x00000000009C0000-0x00000000009C1000-memory.dmp
    Filesize

    4KB

  • memory/1636-75-0x0000000002470000-0x0000000002471000-memory.dmp
    Filesize

    4KB

  • memory/1636-78-0x0000000002480000-0x0000000002481000-memory.dmp
    Filesize

    4KB

  • memory/1636-77-0x0000000000770000-0x0000000000771000-memory.dmp
    Filesize

    4KB

  • memory/1636-80-0x0000000002570000-0x0000000002571000-memory.dmp
    Filesize

    4KB

  • memory/1636-79-0x0000000002580000-0x0000000002581000-memory.dmp
    Filesize

    4KB

  • memory/1636-81-0x00000000025D0000-0x00000000025D1000-memory.dmp
    Filesize

    4KB

  • memory/1636-82-0x0000000002560000-0x0000000002561000-memory.dmp
    Filesize

    4KB

  • memory/1636-83-0x00000000025F0000-0x00000000025F1000-memory.dmp
    Filesize

    4KB

  • memory/1636-84-0x00000000025A0000-0x00000000025A1000-memory.dmp
    Filesize

    4KB

  • memory/1636-85-0x00000000025E0000-0x00000000025E1000-memory.dmp
    Filesize

    4KB

  • memory/1636-86-0x00000000033E0000-0x00000000033E1000-memory.dmp
    Filesize

    4KB

  • memory/1636-88-0x00000000026D0000-0x00000000026D1000-memory.dmp
    Filesize

    4KB

  • memory/1636-87-0x00000000026E0000-0x00000000026E1000-memory.dmp
    Filesize

    4KB

  • memory/1636-90-0x00000000026C0000-0x00000000026C1000-memory.dmp
    Filesize

    4KB

  • memory/1636-89-0x0000000002730000-0x0000000002731000-memory.dmp
    Filesize

    4KB

  • memory/1636-92-0x0000000002700000-0x0000000002701000-memory.dmp
    Filesize

    4KB

  • memory/1636-91-0x0000000002750000-0x0000000002751000-memory.dmp
    Filesize

    4KB

  • memory/1636-93-0x0000000002740000-0x0000000002741000-memory.dmp
    Filesize

    4KB

  • memory/1636-94-0x00000000026F0000-0x00000000026F1000-memory.dmp
    Filesize

    4KB

  • memory/1636-96-0x00000000033A0000-0x00000000033A1000-memory.dmp
    Filesize

    4KB

  • memory/1636-95-0x00000000033B0000-0x00000000033B1000-memory.dmp
    Filesize

    4KB

  • memory/1636-98-0x0000000003380000-0x0000000003381000-memory.dmp
    Filesize

    4KB

  • memory/1636-97-0x0000000003390000-0x0000000003391000-memory.dmp
    Filesize

    4KB

  • memory/1636-99-0x0000000003431000-0x0000000003465000-memory.dmp
    Filesize

    208KB