Resubmissions

24-02-2022 11:14

220224-ncejnschd5 10

22-02-2022 08:33

220222-kfyj6sfggm 8

Analysis

  • max time kernel
    162s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    22-02-2022 08:33

General

  • Target

    8df2949d77aff0ef84af7c2a892602e05d3518d85b87fa5ed56493199efd2143.exe

  • Size

    267KB

  • MD5

    ec3a003082a19fd6a00f84df315d18a2

  • SHA1

    e7268a6982c3d17aaf472b331b67fbdbc4000dec

  • SHA256

    8df2949d77aff0ef84af7c2a892602e05d3518d85b87fa5ed56493199efd2143

  • SHA512

    d3e804add5ebf3efdbf4794cbc1cc53bfc0485298771a1f43d7d683870f82561be3387d83436cf308e260bd600ce475998add0d094d63ab46f3dd75ad16f74aa

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 54 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8df2949d77aff0ef84af7c2a892602e05d3518d85b87fa5ed56493199efd2143.exe
    "C:\Users\Admin\AppData\Local\Temp\8df2949d77aff0ef84af7c2a892602e05d3518d85b87fa5ed56493199efd2143.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:3688
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:64
  • C:\ProgramData\MC\Mc.exe
    C:\ProgramData\MC\Mc.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      2⤵
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3728
      • C:\Windows\SysWOW64\msiexec.exe
        C:\Windows\SysWOW64\msiexec.exe
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:212
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:1804

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\MC\Mc.exe

    MD5

    884d46c01c762ad6ddd2759fd921bf71

    SHA1

    d201b130232e0ea411daa23c1ba2892fe6468712

    SHA256

    3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

    SHA512

    0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

  • C:\ProgramData\MC\Mc.exe

    MD5

    884d46c01c762ad6ddd2759fd921bf71

    SHA1

    d201b130232e0ea411daa23c1ba2892fe6468712

    SHA256

    3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

    SHA512

    0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

  • C:\ProgramData\MC\McUtil.dll

    MD5

    ffa5f4b6b580d53bc311d6e5bace3110

    SHA1

    d599ca575b995d8de971aed8a64762225bde386d

    SHA256

    9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

    SHA512

    20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

  • C:\ProgramData\MC\McUtil.dll

    MD5

    ffa5f4b6b580d53bc311d6e5bace3110

    SHA1

    d599ca575b995d8de971aed8a64762225bde386d

    SHA256

    9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

    SHA512

    20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

  • C:\ProgramData\MC\McUtil.dll.url

    MD5

    e8f20ec41ae7091198579a1b731f6da2

    SHA1

    ac524110bcf5148db5f0d0b7f0ff42f3470209b4

    SHA256

    27b9495c45248c3702d355323d8e70731f87c4889abebc6967265c83527e40e7

    SHA512

    7686e53076993926ed7f012d5cde0848d6b5119ef1a5f6760e382f72c2ff3205a5d2fc6846778ee4e560bd01c8b2eedb46ab5efed8152aa588891dfa8b761bd8

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe

    MD5

    884d46c01c762ad6ddd2759fd921bf71

    SHA1

    d201b130232e0ea411daa23c1ba2892fe6468712

    SHA256

    3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

    SHA512

    0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe

    MD5

    884d46c01c762ad6ddd2759fd921bf71

    SHA1

    d201b130232e0ea411daa23c1ba2892fe6468712

    SHA256

    3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

    SHA512

    0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll

    MD5

    ffa5f4b6b580d53bc311d6e5bace3110

    SHA1

    d599ca575b995d8de971aed8a64762225bde386d

    SHA256

    9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

    SHA512

    20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll

    MD5

    ffa5f4b6b580d53bc311d6e5bace3110

    SHA1

    d599ca575b995d8de971aed8a64762225bde386d

    SHA256

    9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

    SHA512

    20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll.url

    MD5

    e8f20ec41ae7091198579a1b731f6da2

    SHA1

    ac524110bcf5148db5f0d0b7f0ff42f3470209b4

    SHA256

    27b9495c45248c3702d355323d8e70731f87c4889abebc6967265c83527e40e7

    SHA512

    7686e53076993926ed7f012d5cde0848d6b5119ef1a5f6760e382f72c2ff3205a5d2fc6846778ee4e560bd01c8b2eedb46ab5efed8152aa588891dfa8b761bd8

  • memory/212-148-0x00000000023C0000-0x00000000023C1000-memory.dmp

    Filesize

    4KB

  • memory/212-149-0x0000000002890000-0x00000000028B5000-memory.dmp

    Filesize

    148KB

  • memory/1544-143-0x00000000005D0000-0x00000000005F7000-memory.dmp

    Filesize

    156KB

  • memory/3688-135-0x0000000000402000-0x0000000000403000-memory.dmp

    Filesize

    4KB

  • memory/3688-137-0x00000000021E0000-0x0000000002207000-memory.dmp

    Filesize

    156KB

  • memory/3688-136-0x00000000020E0000-0x00000000021E0000-memory.dmp

    Filesize

    1024KB

  • memory/3728-144-0x00000000008F0000-0x00000000008F1000-memory.dmp

    Filesize

    4KB

  • memory/3728-145-0x0000000002F70000-0x0000000002F95000-memory.dmp

    Filesize

    148KB