Overview

overview

10

Static

static

cobaltocyanic.exe

windows7_x64

10

cobaltocyanic.exe

windows10_x64

10

Resubmissions

23-08-2021 08:27

210823-eq4gl5gpsj 10

22-08-2021 20:01

210822-da2dyvnqx6 10

Analysis

  • max time kernel
    128s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    22-08-2021 20:01

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    cobaltocyanic.exe

  • Size

    3.9MB

  • MD5

    26944aed6dfc2c25f96bbca49925fcaf

  • SHA1

    b2b7a7a659abf7fd2c5596c119478363e0b7f360

  • SHA256

    64dd547546394e1d431a25a671892c7aca9cf57ed0733a7435028792ad42f4a7

  • SHA512

    ea0a599107acfbca4cc20987d003bd27a3168adea1df56378d4b6a934d1429d543bec91a7216c485ec0167b1d34ed510299e030944c4b8f6c3922b4699a4eabf

Score
10/10
rustybuerloader

Malware Config

Extracted

Family

rustybuer

C2

https://awmelisers.com/

Signatures

  • RustyBuer

    RustyBuer is a new variant of Buer loader written in Rust.

    loaderrustybuer
  • Enumerates connected drives 3 TTPs 49 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cobaltocyanic.exe
    "C:\Users\Admin\AppData\Local\Temp\cobaltocyanic.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3916
    • C:\Windows\SysWOW64\secinit.exe
      "C:\Windows\System32\secinit.exe"
      2⤵
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2024-115-0x00000000004893A7-mapping.dmp
    Download
  • memory/2024-114-0x0000000000400000-0x0000000000535000-memory.dmp
    Filesize

    1.2MB

    Download
  • memory/2024-119-0x0000000000400000-0x0000000000535000-memory.dmp
    Filesize

    1.2MB

    Download
  • memory/3916-118-0x0000000000860000-0x0000000000861000-memory.dmp
    Filesize

    4KB

    Download