Analysis

  • max time kernel
    87s
  • max time network
    26s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    23-08-2021 20:28

General

  • Target

    66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.exe

  • Size

    78KB

  • MD5

    feed59d9048fdc17962b71f7550388dd

  • SHA1

    b24887db18de6b017687c2aca95cf1ccfa0d8ea3

  • SHA256

    66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f

  • SHA512

    4fcd03ec2e73e0ce75774c21db66184bc3eab9128cac1cae9d1487a6bb8461a5641a7c3be590291f561833c22377e2f74c09084b37fda1f4d524b2607b252284

Score
10/10

Malware Config

Extracted

Path

C:\1rWCqamCt.README.txt

Family

blackmatter

Ransom Note
~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data. >>> What guarantees? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals. We always keep our promises. >>> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/9BEBTCZQN6BQJ94DJXJ >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/9BEBTCZQN6BQJ94DJXJ

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 3 IoCs
  • Modifies registry class 31 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.exe
    "C:\Users\Admin\AppData\Local\Temp\66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.exe"
    1⤵
    • Modifies extensions of user files
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" /p C:\1rWCqamCt.README.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:1780
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\1rWCqamCt.README.txt
    MD5

    07f76e653f6d78ad8ec2fee0af5f8fd4

    SHA1

    4c1624e7ed2ec95e967816b44d7232aefcdf3ff5

    SHA256

    a44c657f4da66a742f2615c445b457589d658a806ce6d01dc37f183a601cbea3

    SHA512

    695f89acdcb645dea20f22c1e1a8a0ed00f7b4c76cffffb85057144ed67f124985b2eb73719429454f11944daa94e8927e314b1a5ce1b384cace59845f7caebf

  • C:\Users\Admin\Documents\GetSuspend.xps.1rWCqamCt
    MD5

    64ab1ac423ee8bbd47b5f6a954db7157

    SHA1

    08ae67e8de63841abef7a32db7b249b29550a3df

    SHA256

    31e3e1e72605f7a8880078790bee420ac557fc03c7c191a253092ce29b56fdca

    SHA512

    770f42a0efe8c8494971b9b65addfc49aeef2056db5aed5897c3e221bd4a756aea1babc0648b4d9b51fef03d3498b8cad6c545bca73b624c00925e21c9f5cf37

  • C:\Users\Admin\Documents\UnprotectCopy.xps.1rWCqamCt
    MD5

    7485a44bccd5f6773a11638eafe14b4f

    SHA1

    2ea6a68414cd61f52a376d61d0261e73a403f240

    SHA256

    f9b58c5911af1b5b6244306b9c1dd9801e5edf3aceb8e4ec891c9f828be1ad7d

    SHA512

    6e3bcb76e62a32ff339df78bb322af4d68a4cac4c3e7fcf08eb25ae7a34a1fcbefc9138efb64014a928d07da40f0de8012f27b9b3e0059281a2cea95441d463f

  • memory/984-60-0x0000000075AD1000-0x0000000075AD3000-memory.dmp
    Filesize

    8KB

  • memory/984-62-0x0000000001D90000-0x0000000001D91000-memory.dmp
    Filesize

    4KB

  • memory/984-61-0x0000000001D95000-0x0000000001DA6000-memory.dmp
    Filesize

    68KB

  • memory/984-63-0x0000000001DA6000-0x0000000001DA7000-memory.dmp
    Filesize

    4KB

  • memory/1612-64-0x0000000000000000-mapping.dmp
  • memory/1780-67-0x0000000000000000-mapping.dmp
  • memory/1780-68-0x000007FEFB761000-0x000007FEFB763000-memory.dmp
    Filesize

    8KB

  • memory/1780-69-0x0000000004260000-0x0000000004261000-memory.dmp
    Filesize

    4KB