Analysis

  • max time kernel
    146s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    09-04-2024 07:12

General

  • Target

    4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe

  • Size

    736KB

  • MD5

    6e3610259fc6eedbd8b27e21cbcef0a1

  • SHA1

    9255258a60d520039a9177e814e4b13c46484f55

  • SHA256

    4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33

  • SHA512

    b91c1f7c61cd38fa7542c45764217f375be848b4787d0272c67ec5cda442985882f7c673c078bb650b6cd06e95e4e720028d0495ebb73351ea7f9a7283c620dc

  • SSDEEP

    12288:rRykQVJq/Zja+Bx1j1Rn7OEV4jfHJ1uYakQkOotQHQZ1nuBguLOds4CaG7C:rRykQVJiZ+E11JHVYHXuYakQkOqMu1uL

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .ckae

  • offline_id

    ZVvfVW8wxnrSMj135EIm8D19e1REmIMChpeQi7t1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://fuyt.org/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-XG8CpMbJwj Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0397Jsfkjn

rsa_pubkey.plain

Extracted

Family

mylobot

C2

pqrqtaz.ru:9879

pickcas.ru:6464

quwkbin.ru:3496

rkbupij.ru:6653

pcqmayq.ru:3629

mmuliwe.ru:3541

stoizji.ru:5189

sfdfrhh.ru:3511

ynciazz.ru:4127

mkglhnw.ru:1946

njeeili.ru:9987

dldzeoo.ru:7525

tkbiqjq.ru:5145

uenosbl.ru:2935

faayshc.ru:9865

nttfazc.ru:6761

nfwsyog.ru:7172

uyfusxm.ru:7372

hxkclwx.ru:1294

zgoysam.ru:2338

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Mylobot

    Botnet which first appeared in 2017 written in C++.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe
    "C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe
      "C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a08850f8-e7f2-4721-a2e6-41a4ab0f72c5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2676
      • C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe
        "C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2644
        • C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe
          "C:\Users\Admin\AppData\Local\Temp\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1556
          • C:\Users\Admin\AppData\Local\d826a8b0-dbaa-4226-b3a9-78718c49c207\build3.exe
            "C:\Users\Admin\AppData\Local\d826a8b0-dbaa-4226-b3a9-78718c49c207\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2336
            • C:\Users\Admin\AppData\Local\d826a8b0-dbaa-4226-b3a9-78718c49c207\build3.exe
              "C:\Users\Admin\AppData\Local\d826a8b0-dbaa-4226-b3a9-78718c49c207\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:1448
              • C:\Windows\SysWOW64\svchost.exe
                "C:\Windows\system32\svchost.exe"
                7⤵
                • Adds Run key to start application
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1260

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    fc5408c48a55314c72e200b74330cac4

    SHA1

    7e8889ec3189a40e6078088927bf3612753fa628

    SHA256

    7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4

    SHA512

    481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    8b4fa9dc64b0d76ccd8478fad36011c9

    SHA1

    5497238f698a5eccc3df1c055aa4c53c91013790

    SHA256

    bc003ad7274a25fcd97c947eb0d8c10ed4021efa05959863e6ad00724fe02c05

    SHA512

    d2b39b980788ea7de0c6c2c1b22665369123525bd19d914de537c10211627f4773f422ee5806a11c296b7eb24053b1c8496cf77ef077af4e4ab96473e422f1f0

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    a9f95bb5d1115bb66b2f317532efbf00

    SHA1

    51c646db0f42ffa09e0bb388369295563077b463

    SHA256

    62a0c0bc5f0c275c1b0e9275504d6760203085bcf6cde08c839c210c656f7c26

    SHA512

    f0f1bfd776be73f471766d1fc8d9f8995cfd8589a9367f3c2bb61059196b81129b057f288fd4c51cd3593085851ba633b0dc974a9bfc5e08d5e121fea1480a8d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    6e7ba3caa0ac99be7264309e3d4b95ba

    SHA1

    3cb32cc9edcea6487f11fca03dd35ad748fb00d5

    SHA256

    139f5a77e0e62d4dfbe9fe66efd0358b6610626a637c875f8ecc7632024df72d

    SHA512

    9d165f4af13b717f8b64e027cda23dcbdaaae8bdebeebc1e9c2af0f692ed4c8017a1abf99181d56bdfa73732e026777237605bf26729d22c21b1c60a5c166593

  • C:\Users\Admin\AppData\Local\Temp\Cab82C7.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\a08850f8-e7f2-4721-a2e6-41a4ab0f72c5\4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33.exe

    Filesize

    736KB

    MD5

    6e3610259fc6eedbd8b27e21cbcef0a1

    SHA1

    9255258a60d520039a9177e814e4b13c46484f55

    SHA256

    4278a2a61c7b33215af1e8e06bb2ea8d2461f8ecac61031d737a5914fd1e0b33

    SHA512

    b91c1f7c61cd38fa7542c45764217f375be848b4787d0272c67ec5cda442985882f7c673c078bb650b6cd06e95e4e720028d0495ebb73351ea7f9a7283c620dc

  • C:\Users\Admin\AppData\Local\bowsakkdestx.txt

    Filesize

    1KB

    MD5

    3c024fb74d85e0f79aad150ca997fed5

    SHA1

    3bf944aeea717a3e5a63b7df07f74e2d78d476a0

    SHA256

    8f36f0b4d8abc28b10daa36f4c285bc911f91f1346801372e26518b41ffa0b73

    SHA512

    ec42da9e198576e0962b3dd3cbc24c473bcdce8945ccaf8b45d23a05a3b2fbb7a229e35b1ffc958a3b4a46898170329d272359bfb288af7649e093e0160d639e

  • C:\Users\Admin\AppData\Local\d826a8b0-dbaa-4226-b3a9-78718c49c207\build3.exe

    Filesize

    576KB

    MD5

    2e085fcd5f16febf51893d9054b4e565

    SHA1

    a7af6e55904934b7813b1ca03278a6f00f6c9774

    SHA256

    2226caaeaeb0d4c3cbae31480531a200d8119c174bcccdf9fb20d8006abc4298

    SHA512

    7f633cd190286fa183d637572c0eab61a9498323d9f3716e9e0a59d28b7ab9cb83179c894409810b161f73c005d838eecb18d0cd672adaff628f83526cda8d09

  • memory/1260-89-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-90-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-97-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-85-0x0000000000080000-0x0000000000110000-memory.dmp

    Filesize

    576KB

  • memory/1260-86-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-91-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-88-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1260-87-0x0000000000170000-0x00000000001A6000-memory.dmp

    Filesize

    216KB

  • memory/1448-75-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-77-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1448-67-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-92-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-79-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-82-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-73-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-71-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-69-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1448-83-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

  • memory/1556-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-96-0x0000000002EC0000-0x0000000002EC1000-memory.dmp

    Filesize

    4KB

  • memory/1556-113-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-111-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-109-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-110-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-107-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-104-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1556-94-0x0000000002ED0000-0x0000000002ED1000-memory.dmp

    Filesize

    4KB

  • memory/1656-2-0x00000000006F0000-0x0000000000781000-memory.dmp

    Filesize

    580KB

  • memory/1656-5-0x0000000001FE0000-0x00000000020FB000-memory.dmp

    Filesize

    1.1MB

  • memory/1656-0-0x0000000000400000-0x00000000006E8000-memory.dmp

    Filesize

    2.9MB

  • memory/1656-8-0x0000000000400000-0x00000000006E8000-memory.dmp

    Filesize

    2.9MB

  • memory/1656-7-0x00000000021E0000-0x00000000024C8000-memory.dmp

    Filesize

    2.9MB

  • memory/1656-1-0x0000000000400000-0x00000000006E8000-memory.dmp

    Filesize

    2.9MB

  • memory/2336-65-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/2644-32-0x0000000000400000-0x00000000006E8000-memory.dmp

    Filesize

    2.9MB

  • memory/2644-37-0x0000000000400000-0x00000000006E8000-memory.dmp

    Filesize

    2.9MB

  • memory/2692-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2692-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2692-11-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2692-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2692-31-0x0000000003B50000-0x0000000003E38000-memory.dmp

    Filesize

    2.9MB

  • memory/2692-10-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB