Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 10:44

General

  • Target
    2024-05-27_8cc2e0c98ec51f670a85de8642e51491_cobalt-strike_cobaltstrike.exe
  • Size 5.9MB
  • Sample240527-mtbzfahf85
  • SHA256 761aff84a77b75c1864cdbe2f9708a0a178bdc5deff4f81e32864f4016daab24
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cobaltstrike

Botnet
  • 0

C2
  • http://ns7.softline.top:443/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books

  • http://ns8.softline.top:443/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books

  • http://ns9.softline.top:443/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books

Attributes
  • access_type

    512

  • beacon_type

    256

  • create_remote_thread

    768

  • crypto_scheme

    256

  • host

    ns7.softline.top,/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books,ns8.softline.top,/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books,ns9.softline.top,/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books

  • http_header1

    AAAACgAAAAtBY2NlcHQ6ICovKgAAAAoAAAAUSG9zdDogd3d3LmFtYXpvbi5jb20AAAAHAAAAAAAAAAMAAAACAAAADnNlc3Npb24tdG9rZW49AAAAAgAAAAxza2luPW5vc2tpbjsAAAABAAAALGNzbS1oaXQ9cy0yNEtVMTFCQjgyUlpTWUdKM0JES3wxNDE5ODk5MDEyOTk2AAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAAAtBY2NlcHQ6ICovKgAAAAoAAAAWQ29udGVudC1UeXBlOiB0ZXh0L3htbAAAAAoAAAAgWC1SZXF1ZXN0ZWQtV2l0aDogWE1MSHR0cFJlcXVlc3QAAAAKAAAAFEhvc3Q6IHd3dy5hbWF6b24uY29tAAAACQAAAApzej0xNjB4NjAwAAAACQAAABFvZT1vZT1JU08tODg1OS0xOwAAAAcAAAAAAAAABQAAAAJzbgAAAAkAAAAGcz0zNzE3AAAACQAAACJkY19yZWY9aHR0cCUzQSUyRiUyRnd3dy5hbWF6b24uY29tAAAABwAAAAEAAAADAAAABAAAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • maxdns

    255

  • pipe_name

    \\%s\pipe\msagent_%x

  • polling_time

    5000

  • port_number

    443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDI579oVVII0cYncGonU6vTWyFhqmq8w5QwvI8qsoWeV68Ngy+MjNPX2crcSVVWKQ3j09FII28KTmoE1XFVjEXF3WytRSlDe1OKfOAHX3XYkS9LcUAy0eRl2h4a73hrg1ir/rpisNT6hHtYaK3tmH8DgW/n1XfTfbWk1MZ7cXQHWQIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /N4215/adj/amzn.us.sr.aps

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko

  • watermark

    0

Signatures

  • Cobalt Strike reflective loader 21 IoCs

    Detects the reflective loader used by Cobalt Strike.

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Detects Reflective DLL injection artifacts 21 IoCs
  • UPX dump on OEP (original entry point) 64 IoCs
  • XMRig Miner payload 64 IoCs
  • Executes dropped EXE 21 IoCs
  • UPX packed file 64 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_8cc2e0c98ec51f670a85de8642e51491_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_8cc2e0c98ec51f670a85de8642e51491_cobalt-strike_cobaltstrike.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:224
    • C:\Windows\System\RbhfUFW.exe
      C:\Windows\System\RbhfUFW.exe
      2⤵
      • Executes dropped EXE
      PID:2572
    • C:\Windows\System\Gpaumvc.exe
      C:\Windows\System\Gpaumvc.exe
      2⤵
      • Executes dropped EXE
      PID:3700
    • C:\Windows\System\STxfRha.exe
      C:\Windows\System\STxfRha.exe
      2⤵
      • Executes dropped EXE
      PID:2096
    • C:\Windows\System\EemFCRU.exe
      C:\Windows\System\EemFCRU.exe
      2⤵
      • Executes dropped EXE
      PID:2468
    • C:\Windows\System\EspahYg.exe
      C:\Windows\System\EspahYg.exe
      2⤵
      • Executes dropped EXE
      PID:4900
    • C:\Windows\System\CGUBSrh.exe
      C:\Windows\System\CGUBSrh.exe
      2⤵
      • Executes dropped EXE
      PID:1412
    • C:\Windows\System\bHcvjaK.exe
      C:\Windows\System\bHcvjaK.exe
      2⤵
      • Executes dropped EXE
      PID:4904
    • C:\Windows\System\fEGIClu.exe
      C:\Windows\System\fEGIClu.exe
      2⤵
      • Executes dropped EXE
      PID:4648
    • C:\Windows\System\XQoHhvT.exe
      C:\Windows\System\XQoHhvT.exe
      2⤵
      • Executes dropped EXE
      PID:2092
    • C:\Windows\System\rgzxIIv.exe
      C:\Windows\System\rgzxIIv.exe
      2⤵
      • Executes dropped EXE
      PID:5016
    • C:\Windows\System\wSrcOaI.exe
      C:\Windows\System\wSrcOaI.exe
      2⤵
      • Executes dropped EXE
      PID:2428
    • C:\Windows\System\pipuISA.exe
      C:\Windows\System\pipuISA.exe
      2⤵
      • Executes dropped EXE
      PID:4620
    • C:\Windows\System\KOuPDFQ.exe
      C:\Windows\System\KOuPDFQ.exe
      2⤵
      • Executes dropped EXE
      PID:5044
    • C:\Windows\System\eluYSJJ.exe
      C:\Windows\System\eluYSJJ.exe
      2⤵
      • Executes dropped EXE
      PID:2088
    • C:\Windows\System\puSBHAs.exe
      C:\Windows\System\puSBHAs.exe
      2⤵
      • Executes dropped EXE
      PID:4612
    • C:\Windows\System\UNAsczd.exe
      C:\Windows\System\UNAsczd.exe
      2⤵
      • Executes dropped EXE
      PID:3668
    • C:\Windows\System\egnFbtg.exe
      C:\Windows\System\egnFbtg.exe
      2⤵
      • Executes dropped EXE
      PID:452
    • C:\Windows\System\JBiCfTy.exe
      C:\Windows\System\JBiCfTy.exe
      2⤵
      • Executes dropped EXE
      PID:1108
    • C:\Windows\System\tJDgmyM.exe
      C:\Windows\System\tJDgmyM.exe
      2⤵
      • Executes dropped EXE
      PID:1304
    • C:\Windows\System\nrqjJeo.exe
      C:\Windows\System\nrqjJeo.exe
      2⤵
      • Executes dropped EXE
      PID:980
    • C:\Windows\System\tPhjPUO.exe
      C:\Windows\System\tPhjPUO.exe
      2⤵
      • Executes dropped EXE
      PID:4296

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        CGUBSrh.exe

        • Path C:\Windows\System\CGUBSrh.exe
        • Size 5.9MB
        • SHA256 9a128cfeb6351d6c96c36b0ee4a67f3c5edfaf0602cf15dddb322cc14ff0634d
        • MD5 SHA1 SHA512 SSDEEP

        EemFCRU.exe

        • Path C:\Windows\System\EemFCRU.exe
        • Size 5.9MB
        • SHA256 eb9cd94f30dbe22d06ee4239769773be6b3fd71304c00e38cd94c7d12d4c7339
        • MD5 SHA1 SHA512 SSDEEP

        EspahYg.exe

        • Path C:\Windows\System\EspahYg.exe
        • Size 5.9MB
        • SHA256 5ab8918b52d2406d4df6968a7ea8239dc2c14cae67ceede0bb5e5b62b479e37e
        • MD5 SHA1 SHA512 SSDEEP

        Gpaumvc.exe

        • Path C:\Windows\System\Gpaumvc.exe
        • Size 5.9MB
        • SHA256 7902c044610cb132fa61627b05607b38e530e274dbf7dec6f71b74a70c4daebe
        • MD5 SHA1 SHA512 SSDEEP

        JBiCfTy.exe

        • Path C:\Windows\System\JBiCfTy.exe
        • Size 5.9MB
        • SHA256 3b34f93b45e53add96f31a06de9be79a425bf4d054ce9d23f657fa080ab49686
        • MD5 SHA1 SHA512 SSDEEP

        KOuPDFQ.exe

        • Path C:\Windows\System\KOuPDFQ.exe
        • Size 5.9MB
        • SHA256 91c66f1c02ee76c0ab96ada0bc7539a682c490fdf466e1c90feaf94787c7fc56
        • MD5 SHA1 SHA512 SSDEEP

        RbhfUFW.exe

        • Path C:\Windows\System\RbhfUFW.exe
        • Size 5.9MB
        • SHA256 77bdab37471b0ea26830571de11d91d24f51bd7cf6b9225dc967da6bd528fe2a
        • MD5 SHA1 SHA512 SSDEEP

        STxfRha.exe

        • Path C:\Windows\System\STxfRha.exe
        • Size 5.9MB
        • SHA256 4731c0a81f53987c4be3eb20ee130c402d83b2492bd70c71918543aed21ee4e9
        • MD5 SHA1 SHA512 SSDEEP

        UNAsczd.exe

        • Path C:\Windows\System\UNAsczd.exe
        • Size 5.9MB
        • SHA256 9a3e6e558ce1f3cb97800c6cff0963bfc6cc97082e6e88215d133c6012c123c0
        • MD5 SHA1 SHA512 SSDEEP

        XQoHhvT.exe

        • Path C:\Windows\System\XQoHhvT.exe
        • Size 5.9MB
        • SHA256 849dd73f6a6d9d64dfe310aa24c0257ad1206e65e96e64de0b664843ed6b5b48
        • MD5 SHA1 SHA512 SSDEEP

        bHcvjaK.exe

        • Path C:\Windows\System\bHcvjaK.exe
        • Size 5.9MB
        • SHA256 db99cdbce6a69fe832d35507e792f5f2e899a1112a2d5671ce3d9175bb6e0963
        • MD5 SHA1 SHA512 SSDEEP

        egnFbtg.exe

        • Path C:\Windows\System\egnFbtg.exe
        • Size 5.9MB
        • SHA256 281a8fde5ad8848d29bc62c14db281f557c98531d5962bee16cfc0f28d85a60e
        • MD5 SHA1 SHA512 SSDEEP

        eluYSJJ.exe

        • Path C:\Windows\System\eluYSJJ.exe
        • Size 5.9MB
        • SHA256 38c1a31f42eddaf059dbc8152384550267815fc4c5c74765f71e04e8ff8e845f
        • MD5 SHA1 SHA512 SSDEEP

        fEGIClu.exe

        • Path C:\Windows\System\fEGIClu.exe
        • Size 5.9MB
        • SHA256 1dc9f3ad2ca963bfd9c9a7ff7fa200d62162211defd748e235d9f8eb782fc1f0
        • MD5 SHA1 SHA512 SSDEEP

        nrqjJeo.exe

        • Path C:\Windows\System\nrqjJeo.exe
        • Size 5.9MB
        • SHA256 1a4655b9aeed21389202e714cb3208782184651a96b45beea7a3a8222926899e
        • MD5 SHA1 SHA512 SSDEEP

        pipuISA.exe

        • Path C:\Windows\System\pipuISA.exe
        • Size 5.9MB
        • SHA256 dd4307c02c95a0748aeb15c4b34c59e7db8911e805988350a826304d9262e1e9
        • MD5 SHA1 SHA512 SSDEEP

        puSBHAs.exe

        • Path C:\Windows\System\puSBHAs.exe
        • Size 5.9MB
        • SHA256 455a36b3005c575027063c824f2703995693409d2f20f653917bbcafdfd9b355
        • MD5 SHA1 SHA512 SSDEEP

        rgzxIIv.exe

        • Path C:\Windows\System\rgzxIIv.exe
        • Size 5.9MB
        • SHA256 4f5fddf135f98af5ad53ba62cbed045ee0d7e5230a0026f96810d4ca12c8d76c
        • MD5 SHA1 SHA512 SSDEEP

        tJDgmyM.exe

        • Path C:\Windows\System\tJDgmyM.exe
        • Size 5.9MB
        • SHA256 b3483d2e7e059aff140ab8174899466068c337ef98349d88a94d8657b5920fb2
        • MD5 SHA1 SHA512 SSDEEP

        tPhjPUO.exe

        • Path C:\Windows\System\tPhjPUO.exe
        • Size 5.9MB
        • SHA256 979c6dd1f51d8f45217f64de3372091efeaa3d639560e0b0074ca24f0791dc71
        • MD5 SHA1 SHA512 SSDEEP

        wSrcOaI.exe

        • Path C:\Windows\System\wSrcOaI.exe
        • Size 5.9MB
        • SHA256 28c5d23db65226f165ff01b4fd8cbaf9e98ea176562592d14c2fbaac48a03aef
        • MD5 SHA1 SHA512 SSDEEP

        memory/224-0-0x00007FF7A4BB0000-0x00007FF7A4F04000-memory.dmp

        memory/224-129-0x00007FF7A4BB0000-0x00007FF7A4F04000-memory.dmp

        memory/224-1-0x00000232855C0000-0x00000232855D0000-memory.dmp

        memory/452-152-0x00007FF742730000-0x00007FF742A84000-memory.dmp

        memory/452-123-0x00007FF742730000-0x00007FF742A84000-memory.dmp

        memory/980-149-0x00007FF7BA050000-0x00007FF7BA3A4000-memory.dmp

        memory/980-126-0x00007FF7BA050000-0x00007FF7BA3A4000-memory.dmp

        memory/1108-124-0x00007FF61DEE0000-0x00007FF61E234000-memory.dmp

        memory/1108-151-0x00007FF61DEE0000-0x00007FF61E234000-memory.dmp

        memory/1304-150-0x00007FF60D160000-0x00007FF60D4B4000-memory.dmp

        memory/1304-125-0x00007FF60D160000-0x00007FF60D4B4000-memory.dmp

        memory/1412-44-0x00007FF6B7EA0000-0x00007FF6B81F4000-memory.dmp

        memory/1412-139-0x00007FF6B7EA0000-0x00007FF6B81F4000-memory.dmp

        memory/2088-146-0x00007FF6D33C0000-0x00007FF6D3714000-memory.dmp

        memory/2088-120-0x00007FF6D33C0000-0x00007FF6D3714000-memory.dmp

        memory/2092-140-0x00007FF792E60000-0x00007FF7931B4000-memory.dmp

        memory/2092-115-0x00007FF792E60000-0x00007FF7931B4000-memory.dmp

        memory/2096-22-0x00007FF739790000-0x00007FF739AE4000-memory.dmp

        memory/2096-135-0x00007FF739790000-0x00007FF739AE4000-memory.dmp

        memory/2428-144-0x00007FF74D1F0000-0x00007FF74D544000-memory.dmp

        memory/2428-117-0x00007FF74D1F0000-0x00007FF74D544000-memory.dmp

        memory/2468-31-0x00007FF62A710000-0x00007FF62AA64000-memory.dmp

        memory/2468-137-0x00007FF62A710000-0x00007FF62AA64000-memory.dmp

        memory/2468-131-0x00007FF62A710000-0x00007FF62AA64000-memory.dmp

        memory/2572-128-0x00007FF7E0190000-0x00007FF7E04E4000-memory.dmp

        memory/2572-9-0x00007FF7E0190000-0x00007FF7E04E4000-memory.dmp

        memory/2572-133-0x00007FF7E0190000-0x00007FF7E04E4000-memory.dmp

        memory/3668-122-0x00007FF79B280000-0x00007FF79B5D4000-memory.dmp

        memory/3668-153-0x00007FF79B280000-0x00007FF79B5D4000-memory.dmp

        memory/3700-134-0x00007FF60A520000-0x00007FF60A874000-memory.dmp

        memory/3700-130-0x00007FF60A520000-0x00007FF60A874000-memory.dmp

        memory/3700-12-0x00007FF60A520000-0x00007FF60A874000-memory.dmp

        memory/4296-148-0x00007FF63F990000-0x00007FF63FCE4000-memory.dmp

        memory/4296-127-0x00007FF63F990000-0x00007FF63FCE4000-memory.dmp

        memory/4612-121-0x00007FF612EB0000-0x00007FF613204000-memory.dmp

        memory/4612-147-0x00007FF612EB0000-0x00007FF613204000-memory.dmp

        memory/4620-118-0x00007FF7FF880000-0x00007FF7FFBD4000-memory.dmp

        memory/4620-143-0x00007FF7FF880000-0x00007FF7FFBD4000-memory.dmp

        memory/4648-142-0x00007FF7878F0000-0x00007FF787C44000-memory.dmp

        memory/4648-114-0x00007FF7878F0000-0x00007FF787C44000-memory.dmp

        memory/4900-136-0x00007FF686650000-0x00007FF6869A4000-memory.dmp

        memory/4900-39-0x00007FF686650000-0x00007FF6869A4000-memory.dmp

        memory/4904-138-0x00007FF64C230000-0x00007FF64C584000-memory.dmp

        memory/4904-132-0x00007FF64C230000-0x00007FF64C584000-memory.dmp

        memory/4904-41-0x00007FF64C230000-0x00007FF64C584000-memory.dmp

        memory/5016-145-0x00007FF6BB140000-0x00007FF6BB494000-memory.dmp

        memory/5016-116-0x00007FF6BB140000-0x00007FF6BB494000-memory.dmp

        memory/5044-119-0x00007FF69E5C0000-0x00007FF69E914000-memory.dmp

        memory/5044-141-0x00007FF69E5C0000-0x00007FF69E914000-memory.dmp