Resubmissions

26/02/2025, 21:51

250226-1qzg8at1ay 10

21/02/2025, 10:43

250221-msm1bazmfw 10

Analysis

  • max time kernel
    149s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2025, 10:43

General

  • Target

    97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe

  • Size

    192KB

  • MD5

    eb5d46bf72a013bfc7c018169eb1739b

  • SHA1

    f55680a34521ef07c2b8dedd1b74a9927990485a

  • SHA256

    97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb

  • SHA512

    b3e2d512c95913fe0ea1732f1e0bea2e849eb2ef98046380b01c76e6ec38a2ad5c00dcb66f90ad1f9d9c3ab97b81cd92318bdbfc84e2d408ed577902511b0c54

  • SSDEEP

    3072:NqRIVOgLw+7Evuahn9oVpORBqS3h1jHRWbDRaGZKMih4lMVHwz:NUIVOgLw+7Evu2nWsBqS3LjxWHR+Gh

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Phobos family
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Renames multiple (657) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Drops startup file 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe
    "C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:392
    • C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe
      "C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1084
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4464
      • C:\Windows\system32\netsh.exe
        netsh advfirewall set currentprofile state off
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:760
      • C:\Windows\system32\netsh.exe
        netsh firewall set opmode mode=disable
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:2184
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1180
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4572
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3348
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2028

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.id[3FBF11DE-2408].[[email protected]].Caleb

    Filesize

    2.7MB

    MD5

    5b394f2661a092f42f70da3ee5b8940f

    SHA1

    ecafea86be253c15a33f13c12f97474bc2d75a0b

    SHA256

    f218821bcc66645e48442b8bdec83e896e3ba5205a45d204a3d1ff8fb13d50ee

    SHA512

    f1c0049d2b37dfeb4d817865ff53819a10416ee2c40c230c7629327543dab63f9a20f43a965732df54b4593fbe0a2b6f011841baceb4c0efaa48f71251b7ba39

  • C:\info.hta

    Filesize

    4KB

    MD5

    56ebc3a3d4d0ba4d28fb9b13bedd00c8

    SHA1

    88050ba79dc00187b3173f843c1acc507c7ed85d

    SHA256

    ff9d643524a67962f44e57154cc96e8ec74ae1f2b0911706e80d3863c82b9cc9

    SHA512

    7883feb9a32cc2ac7b3ce2e00f67176135c33f2a121ad6514e605422d4132ae15aafc35ac067500ffb47bcfbde9ace9ee14512ec3a22d1a013fd1cbaae2e7643

  • memory/392-0-0x00000000005D0000-0x0000000000600000-memory.dmp

    Filesize

    192KB

  • memory/392-1-0x00000000005D0000-0x0000000000600000-memory.dmp

    Filesize

    192KB

  • memory/392-2-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/392-1089-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/392-1597-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/392-4851-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/392-7104-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/392-11343-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/392-13255-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/1084-13256-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB