Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/02/2024, 09:11

General

  • Target

    a367de4bf7f4a5c1cfa7ac68dc6817b7.exe

  • Size

    54KB

  • MD5

    a367de4bf7f4a5c1cfa7ac68dc6817b7

  • SHA1

    b087f39fa561acd65c6ec35e51d1df46d37e1446

  • SHA256

    bdbb1a14e40484f3f44799186ea8006d06c0fd457b7acc9b5d82d1bd3053aa0e

  • SHA512

    2dc948f05ee346c31d4d0ca4fe3221662e7959cabca8bc3fb6e70136d65e4556d9c1130f1ad6294cf1c296ce7670014fcbdc6c2165f90517ab9d4e6bdceb2767

  • SSDEEP

    1536:3Gi4zOWgjJ4W7LxtuH1YmgtRjhkUZ+uooJiMzfljC:2JzCJ4KLHum/GUhVgsVC

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 6 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a367de4bf7f4a5c1cfa7ac68dc6817b7.exe
    "C:\Users\Admin\AppData\Local\Temp\a367de4bf7f4a5c1cfa7ac68dc6817b7.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s C:\Windows\System32\whewb.dll
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:2636
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 whew9.dll , InstallMyDll
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Suspicious behavior: EnumeratesProcesses
      PID:2888
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s C:\Windows\System32\tata_1.dll
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:2672
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c 375519961O57540.bat
      2⤵
      • Deletes itself
      PID:2424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\375519961O57540.bat

    Filesize

    2KB

    MD5

    449d6daa27a54dc934f1d12563148cd5

    SHA1

    afdb6af0efb343e42b052fb1ba6c1b32718a7cf9

    SHA256

    407bfdc0d1d7b79cd5b13d5fbde8ac70ac493045fa5751e94fcf3a546ca34b40

    SHA512

    602e2d030c67542b73aa9c7875ae147ed9f4be55c1cc1d2fd374aca7b9eaac9bf1dba56165da5f7fe1fae68cdd5f738557b5d4e9f352759a71b2643188edf9cb

  • C:\Windows\SysWOW64\tata_1.dll

    Filesize

    32KB

    MD5

    7f4d22f6fa861d28bdcb2cce2dcb6cd7

    SHA1

    39bab326537d3a94ac67c20d6f3ce0d4814a55fa

    SHA256

    866a865934f9ef9f75125e4e03781ffc245c2e5d67fa2604b731fff185627cd2

    SHA512

    21ecd2b53eef9247ed19ced80b0d5aed1ac1ad1767b78504ad0e758ac19cb5175c76689b311f2b354195fda80bded72ca6deed89fd1d88ee4bbb286aab442bd9

  • C:\Windows\SysWOW64\whew9.dll

    Filesize

    124KB

    MD5

    1fb9c4c3b3be4255065167d457189af2

    SHA1

    a29328e1c31adfb92e2d56a4eb8ba4121cfe2568

    SHA256

    ecf71364c76b2960b1c0a432bcfba50cd9e43be9b6d51f7b6c6b70d0a0dfbc98

    SHA512

    38b974ae75490758780241473c5f98258516b4ce0f94b427a521a5e8c7f021ceaf2321bdd5e9bf3957c1623e8173f087aced466388d656af26d06930c95725eb

  • C:\Windows\SysWOW64\whewb.dll

    Filesize

    40KB

    MD5

    ca705ced50d4bbed8b2288ef472be488

    SHA1

    db27ff8c14a034d7e614d4614f559f64342c731d

    SHA256

    e1de97782a4be0cf90c721d31fb83e5b5b8eb0281bebfe1b26b6bed741a648e1

    SHA512

    8765b5984dfa84718f6f3a758168bd05549baced78b4cd649df16c5e367d3defb4e37ff7986131ad61b9673c8d95a50fe63eb73034144c56129e80381377dcf8

  • memory/2804-0-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2804-10-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2804-23-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB