Analysis

  • max time kernel
    133s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 09:50

General

  • Target

    1f0bc9e2300054c9924b47f76a8570963daa890a7c78db47db74c8468de3fc97.exe

  • Size

    19KB

  • MD5

    56a4d509c6c9274f5c8081c67246e277

  • SHA1

    7bf6c5011b70444f8dc12bed0e0128aa0c2a8ef8

  • SHA256

    1f0bc9e2300054c9924b47f76a8570963daa890a7c78db47db74c8468de3fc97

  • SHA512

    00abc365ebf48c2584da43f7c7824f10704e68aad4ba244dd90a56ee15641d5006735cde758057cc16ae161da9ad399164a594738369d647d95148f9a86184ef

  • SSDEEP

    192:Mmd9B9FPH1M1kTpocHSpL4cJtIo/0kIGwKaaaaOaaakAdtCZ3Wdm:Mm9PH4xUUIo/LwktGG4

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f0bc9e2300054c9924b47f76a8570963daa890a7c78db47db74c8468de3fc97.exe
    "C:\Users\Admin\AppData\Local\Temp\1f0bc9e2300054c9924b47f76a8570963daa890a7c78db47db74c8468de3fc97.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\defnx.exe
      "C:\Users\Admin\AppData\Local\Temp\defnx.exe"
      2⤵
      • Executes dropped EXE
      • Deletes itself
      PID:1384

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\defnx.exe
    Filesize

    19KB

    MD5

    41129531069e47f24d9e615ba75eb36d

    SHA1

    718f6bae382ed8b917ddfb1dabd7b637b052b3e2

    SHA256

    c83d5e31ac3cab0406c84e535af72c7ac7822e4cb3637d1482ef22c39d455c15

    SHA512

    109317bf557dae04e0f046adb1b2df28ee78619842959dabb643c23a3b5efd9d87bf05ba81daeec0f019b5bb13404473b2db80fdbe5c119fa7a96ea8a0b53af7

  • C:\Users\Admin\AppData\Local\Temp\defnx.exe
    Filesize

    19KB

    MD5

    41129531069e47f24d9e615ba75eb36d

    SHA1

    718f6bae382ed8b917ddfb1dabd7b637b052b3e2

    SHA256

    c83d5e31ac3cab0406c84e535af72c7ac7822e4cb3637d1482ef22c39d455c15

    SHA512

    109317bf557dae04e0f046adb1b2df28ee78619842959dabb643c23a3b5efd9d87bf05ba81daeec0f019b5bb13404473b2db80fdbe5c119fa7a96ea8a0b53af7

  • \Users\Admin\AppData\Local\Temp\defnx.exe
    Filesize

    19KB

    MD5

    41129531069e47f24d9e615ba75eb36d

    SHA1

    718f6bae382ed8b917ddfb1dabd7b637b052b3e2

    SHA256

    c83d5e31ac3cab0406c84e535af72c7ac7822e4cb3637d1482ef22c39d455c15

    SHA512

    109317bf557dae04e0f046adb1b2df28ee78619842959dabb643c23a3b5efd9d87bf05ba81daeec0f019b5bb13404473b2db80fdbe5c119fa7a96ea8a0b53af7

  • \Users\Admin\AppData\Local\Temp\defnx.exe
    Filesize

    19KB

    MD5

    41129531069e47f24d9e615ba75eb36d

    SHA1

    718f6bae382ed8b917ddfb1dabd7b637b052b3e2

    SHA256

    c83d5e31ac3cab0406c84e535af72c7ac7822e4cb3637d1482ef22c39d455c15

    SHA512

    109317bf557dae04e0f046adb1b2df28ee78619842959dabb643c23a3b5efd9d87bf05ba81daeec0f019b5bb13404473b2db80fdbe5c119fa7a96ea8a0b53af7

  • memory/1244-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
    Filesize

    8KB

  • memory/1384-57-0x0000000000000000-mapping.dmp