Overview

overview

10

Static

static

7

cmcc_wangda.exe

windows7_x64

10

cmcc_wangda.exe

windows10_x64

10

Analysis

  • max time kernel
    126s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    05-01-2022 14:32

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    cmcc_wangda.exe

  • Size

    2.4MB

  • MD5

    d16906442185c1a198c52ac94dee81bd

  • SHA1

    3a87efee5342c056f8d12dd698cf939161ae5fcf

  • SHA256

    d091bc3af8594ce40edfcfa3790c64295b5ce585673c98223d3c5f9784c10ca3

  • SHA512

    3492cf38af212372b153c60c637eeb42a377237c30cf7994dacd12c7d196eb589823e8ce01ec2c3309ab0f26439965b44d9bcd9a8e45286252dc32a96f20ae31

Score
10/10
cobaltstrike305419896backdoorevasiontrojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

305419896

C2

http://121.37.200.66:80/updates.rss

Attributes
  • access_type

    512

  • host

    121.37.200.66,/updates.rss

  • http_header1

    AAAABwAAAAAAAAADAAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAACZDb250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL29jdGV0LXN0cmVhbQAAAAcAAAAAAAAABQAAAAJpZAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • maxdns

    255

  • polling_time

    60000

  • port_number

    80

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCozkLSj/71XaOLN0/W7M+3gwXbbwv0H+1gAwn/WdMBd8pNLTVQK4HEcqZr2ER+lK/YnOuJIFvSKoNAMlRE77ut/DPz7u5GeEQ59UV7X8JKXe3eW1Hltl8VwxSQqrbWDNqJIk3WxD5IN4m8vUnbVvmbBQOy/AeR4rknlJN3PKqKSQIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /submit.php

  • user_agent

    Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)

  • watermark

    305419896

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cmcc_wangda.exe
    "C:\Users\Admin\AppData\Local\Temp\cmcc_wangda.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:3448

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3448-115-0x0000000000401000-0x0000000000403000-memory.dmp
    Filesize

    8KB

    Download
  • memory/3448-116-0x0000000077530000-0x00000000776BE000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/3448-117-0x0000000000DF0000-0x0000000000E23000-memory.dmp
    Filesize

    204KB

    Download
  • memory/3448-118-0x0000000003590000-0x00000000035CD000-memory.dmp
    Filesize

    244KB

    Download