Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    30-11-2021 08:46

General

  • Target

    9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe

  • Size

    706KB

  • MD5

    850552281eac257de62c6f84dc2c1781

  • SHA1

    52cfe872bcd85c06270424f9d0b426b8ba4ec3f8

  • SHA256

    9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b

  • SHA512

    6de71e72541821f08b7915023a6c9dbb20c2cba761752d92b1827e721ca7e765b514cb540ee472f152f8d4d99b0dc0d8866c9279fc3814f3dcad8ce02c6a8b18

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/fhsgtsspen6/get.php

Attributes
  • extension

    .moia

  • offline_id

    K3PMMX2aWwpnYby88Dzg7tmaIW7Tv0HMWvSyr7t1

  • payload_url

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

    http://tzgl.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-rIyEiK9ekc 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: 0355gSd743d

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 6 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe
    "C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3580
    • C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe
      "C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2236
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f2d445eb-20b6-4108-a697-4b28c4ac0c7c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4356
      • C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe
        "C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4420
        • C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe
          "C:\Users\Admin\AppData\Local\Temp\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4376

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    MD5

    e15da05c12224abc690b1eb313a20137

    SHA1

    80f6284e35fa09eda4e69a5a866f052c9077e1f1

    SHA256

    9708014af393827b1df1614e6d4d99de56f13fbda613e2ead63416a9c2c6e31c

    SHA512

    4d41f757804943d5344476747024dd94aaa6d414d9b1652f9865927234d40c271a42468cde38c2bd68f6e833783ae8ea93727d2eb9e8c24263673eb8dd6b9937

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    MD5

    2bef96fbf39da6a765ed4d36db41fc5a

    SHA1

    af8b93b370a8bfd932552f840d54da310b51c071

    SHA256

    9cf840b96cb69e5c7f2b93630f63e44c20ba7240ce29ffa7e5de6e648c57d3c8

    SHA512

    a05166997abf2f29a1867f2ed649555eb5b153448087025b0d1a77cc14f78da0052a81bfd44d360731ca8b6520646b0d3e51e8fbbc2e045b990505dd46fa24d7

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    MD5

    8b261124931c737121e5f9987231b57c

    SHA1

    332e44b33aee15c375707f0a8b51a972e6871cfc

    SHA256

    215f717cabf2635901a3dc942d4aa5e089ac6ebbf09b2ac985ac5df73b88625f

    SHA512

    e3b1a5d96f50985dac0eadd1a8e82cb0216fc50c3d4bfd5ae51fc862f438345360a32faf11ba386d9b7aae64b325b559b5ed7f6453d77ff70457c3adf6da14b0

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    MD5

    44106dc6bd7573b87f565d0cfbaadb3f

    SHA1

    a43b37e81b4ba81c24ae44222e246e6461c11d99

    SHA256

    10e661186f16384289ef0ab9de39cefb7a250a25d31117c8e748f74a641b46ae

    SHA512

    eba99dc2272c8ad8c6091f57ceb80b36261be202f5782badf5109415ae506b1939afd004436aad279393d17e991055a59e4f39d0bc2c8d0a50764acdbd8a0f7d

  • C:\Users\Admin\AppData\Local\f2d445eb-20b6-4108-a697-4b28c4ac0c7c\9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b.exe

    MD5

    850552281eac257de62c6f84dc2c1781

    SHA1

    52cfe872bcd85c06270424f9d0b426b8ba4ec3f8

    SHA256

    9f47ac91a26cc3741741f0beb82c9c4f99f6ab1f44a1b6598ac5d7057471436b

    SHA512

    6de71e72541821f08b7915023a6c9dbb20c2cba761752d92b1827e721ca7e765b514cb540ee472f152f8d4d99b0dc0d8866c9279fc3814f3dcad8ce02c6a8b18

  • memory/2236-118-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-119-0x0000000000424141-mapping.dmp

  • memory/3580-121-0x0000000004B20000-0x0000000004C3B000-memory.dmp

    Filesize

    1.1MB

  • memory/3580-120-0x0000000004A80000-0x0000000004B11000-memory.dmp

    Filesize

    580KB

  • memory/4356-123-0x0000000000000000-mapping.dmp

  • memory/4376-127-0x0000000000424141-mapping.dmp

  • memory/4376-132-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4420-125-0x0000000000000000-mapping.dmp