Overview

overview

10

Static

static

d71a7b1efc...ca.exe

windows7_x64

10

d71a7b1efc...ca.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4265104s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    17-01-2022 13:04

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General

  • Target

    d71a7b1efc4a06afffd94f526ad496368a9c4489296076449c74eec2d76ee4ca.exe

  • Size

    1.0MB

  • MD5

    5b2a9a12d0c5d44537637cf04d93bec5

  • SHA1

    40e48b1b608b631cfcc04d7b0c9739e6b749288f

  • SHA256

    d71a7b1efc4a06afffd94f526ad496368a9c4489296076449c74eec2d76ee4ca

  • SHA512

    0d301d626eca25df4258da58ea50a423ac3d37e7309d60ce856d7851f07a705a143e09a245dff152d9b238bf995b866dec36672e2c61e148b838119bbcac27f2

Score
10/10
cobaltstrike305419896backdoortrojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

305419896

C2

http://zk4c9u55.wikimedia.vip:443/CWoNaJLBo/VTNeWw11212/

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    zk4c9u55.wikimedia.vip,/CWoNaJLBo/VTNeWw11212/

  • http_header1

    AAAACgAAAEBBY2NlcHQ6IGltYWdlL2dpZiwgaW1hZ2UveC14Yml0bWFwLCBpbWFnZS9qcGVnLCBpbWFnZS9wanBlZywgKi8qAAAACgAAABZBY2NlcHQtTGFuZ3VhZ2U6IGVuLWVuAAAACgAAABZDb25uZWN0aW9uOiBLZWVsLUFsaXZlAAAACgAAABdDYWNoZS1Db250cm9sOiBuby1jYWNoZQAAAAcAAAAAAAAACwAAAAEAAAAML1VUV09xVlExMzIvAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAAEBBY2NlcHQ6IGltYWdlL2dpZiwgaW1hZ2UveC14Yml0bWFwLCBpbWFnZS9qcGVnLCBpbWFnZS9wanBlZywgKi8qAAAACgAAABZBY2NlcHQtTGFuZ3VhZ2U6IGVuLWVuAAAACgAAABZDb25uZWN0aW9uOiBLZWVsLUFsaXZlAAAACgAAABdDYWNoZS1Db250cm9sOiBuby1jYWNoZQAAAAcAAAAAAAAACwAAAAEAAAAML1VUV09xVlExMzIvAAAADAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • jitter

    5120

  • maxdns

    255

  • polling_time

    10000

  • port_number

    443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnCZHWnYFqYB/6gJdkc4MPDTtBJ20nkEAd3tsY4tPKs8MV4yIjJb5CtlrbKHjzP1oD/1AQsj6EKlEMFIKtakLx5+VybrMYE+dDdkDteHmVX0AeFyw001FyQVlt1B+OSNPRscKI5sh1L/ZdwnrMy6S6nNbQ5N5hls6k2kgNO5nQ7QIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /CWoNaJLBo/VTNeWw11213/

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36

  • watermark

    305419896

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d71a7b1efc4a06afffd94f526ad496368a9c4489296076449c74eec2d76ee4ca.exe
    "C:\Users\Admin\AppData\Local\Temp\d71a7b1efc4a06afffd94f526ad496368a9c4489296076449c74eec2d76ee4ca.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:988
    • \??\c:\users\public\Downloads\mcods
      "c:\users\public\Downloads\mcods" -L -S
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:224
  • C:\Windows\system32\MusNotification.exe
    C:\Windows\system32\MusNotification.exe
    1⤵
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:3484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Public\Downloads\mcods
    MD5

    1c5be4413c35d6b1f61c7ec7a628ecdd

    SHA1

    267e92198be85734088d0972c6990279c05e0bfa

    SHA256

    e6bad7f19d3e76268a09230a123bb47d6c7238b6e007cc45c6bc51bb993e8b46

    SHA512

    53ad51b26744cbd6fef5716ffa9b157114050b01b5d3e9ca9a503a3e532b80e49e0846af455a10d36b3305365e88483d1a500ceba6c7b009d2ba4a12a8f47dfa

    Download Submit
  • C:\Users\Public\Downloads\mcvsocfg.dll
    MD5

    ccc4827a1d8a385fd95ec9fb72adca50

    SHA1

    d448fe77460682c7e00ac945c0aba0176eaa16b3

    SHA256

    82a0e722f6746d6f1db58b365c0f15da135bff170d2000858d6e345712ea8732

    SHA512

    fa93fc08fe17c982caaec202190bfec57ce5dea87292d038505d0fa25a8d5855c004019e64d13c5b2ccb5e824f197582706adefefec05911bd44a88dc13dea6b

    Download Submit
  • \??\c:\users\public\Downloads\McVsoCfg.dll
    MD5

    ccc4827a1d8a385fd95ec9fb72adca50

    SHA1

    d448fe77460682c7e00ac945c0aba0176eaa16b3

    SHA256

    82a0e722f6746d6f1db58b365c0f15da135bff170d2000858d6e345712ea8732

    SHA512

    fa93fc08fe17c982caaec202190bfec57ce5dea87292d038505d0fa25a8d5855c004019e64d13c5b2ccb5e824f197582706adefefec05911bd44a88dc13dea6b

    Download Submit
  • memory/224-130-0x0000000000000000-mapping.dmp
    Download
  • memory/224-134-0x0000000002EB0000-0x0000000002EF0000-memory.dmp
    Filesize

    256KB

    Download
  • memory/224-135-0x0000000002F10000-0x0000000002F5C000-memory.dmp
    Filesize

    304KB

    Download