Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-05-2022 23:05

General

  • Target

    1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3.exe

  • Size

    40KB

  • MD5

    b808bcbb1d9b94a4a71899964255ce0e

  • SHA1

    c5e899db34a976f8396cdde8044ebb5ca67a513f

  • SHA256

    1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3

  • SHA512

    6f1c8f6fd0ad1ded7a5ab3e39a45f0ca22bc12100117b3a58f613184069128e7e21b7685262f3647408c6871ea8a5e2a07e53379634f65a45b71552d69620ff9

Score
10/10

Malware Config

Extracted

Family

buer

C2

frrnq8--imp_j_i,fi-

cookn5**fjm\g\f)cf*

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Buer Loader 4 IoCs

    Detects Buer loader in memory or disk.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3.exe
    "C:\Users\Admin\AppData\Local\Temp\1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
      C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3.exe" ensgJJ
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\SysWOW64\secinit.exe
        C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        PID:3508

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe

    Filesize

    40KB

    MD5

    b808bcbb1d9b94a4a71899964255ce0e

    SHA1

    c5e899db34a976f8396cdde8044ebb5ca67a513f

    SHA256

    1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3

    SHA512

    6f1c8f6fd0ad1ded7a5ab3e39a45f0ca22bc12100117b3a58f613184069128e7e21b7685262f3647408c6871ea8a5e2a07e53379634f65a45b71552d69620ff9

  • C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe

    Filesize

    40KB

    MD5

    b808bcbb1d9b94a4a71899964255ce0e

    SHA1

    c5e899db34a976f8396cdde8044ebb5ca67a513f

    SHA256

    1f8595d066ee69e7454b30b718102bbd04122ba8a5bab1e9d5f4532b7a7305a3

    SHA512

    6f1c8f6fd0ad1ded7a5ab3e39a45f0ca22bc12100117b3a58f613184069128e7e21b7685262f3647408c6871ea8a5e2a07e53379634f65a45b71552d69620ff9

  • memory/3508-134-0x00000000007E0000-0x00000000007EC000-memory.dmp

    Filesize

    48KB