Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    11-05-2021 10:35

General

  • Target

    c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe

  • Size

    3.8MB

  • MD5

    a3cf78d1a1d247c5c78c68d947e5ce4c

  • SHA1

    0591a83d66a1e0a3581551b2e9c9dfa1e9b7030c

  • SHA256

    c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169

  • SHA512

    a8e0875a4b974f310881d016e8c772469c784e1c748e68f88968803a44d8a456dfd7a27877efcb19ee7a88a35068e27b9b73520bb6a4458771e3b5d1eab38f8c

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • VMProtect packed file 4 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe
    "C:\Users\Admin\AppData\Local\Temp\c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:788
    • C:\Users\Admin\AppData\Local\Temp\._cache_c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1968
    • C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1756

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe
    MD5

    f65d4cf706c2add18897c640b67c8b84

    SHA1

    dd63c38d5fd4a2d466a36dc35e8c082237de24f8

    SHA256

    f1a5a873cc3987b2a2a756aec8bacfb6d2c922892ce07a0ffb820a332fe82655

    SHA512

    b0e5c1a9d5dd2aff80485b2b237e6350fbd14d67323fd6a85fbc221e45a2bc0b48a2d46bb371d5498f9246943c8015bacce15d20c4c453bb772690534babf2e6

  • C:\Users\Admin\AppData\Local\Temp\._cache_c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe
    MD5

    8912cf5f728c02cff8eea330e5e76afc

    SHA1

    e6e8ff5eca40b3e719c790ba5b813693ac372b0f

    SHA256

    b9654bf6cd45bbd8e6f80ab62c381a1cf14a895c499f3e71d361edae7d0cb3a9

    SHA512

    0ea697b0def5ee99cda6a20bb1b10af25ab530f4b088671005bf0b547a9d7a77d49c81cda7fa29c46d2a1c067a7b090848aba0700b4b9c1ad673615151f541a5

  • C:\Users\Admin\AppData\Local\Temp\._cache_c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe
    MD5

    8912cf5f728c02cff8eea330e5e76afc

    SHA1

    e6e8ff5eca40b3e719c790ba5b813693ac372b0f

    SHA256

    b9654bf6cd45bbd8e6f80ab62c381a1cf14a895c499f3e71d361edae7d0cb3a9

    SHA512

    0ea697b0def5ee99cda6a20bb1b10af25ab530f4b088671005bf0b547a9d7a77d49c81cda7fa29c46d2a1c067a7b090848aba0700b4b9c1ad673615151f541a5

  • \ProgramData\Synaptics\Synaptics.exe
    MD5

    f65d4cf706c2add18897c640b67c8b84

    SHA1

    dd63c38d5fd4a2d466a36dc35e8c082237de24f8

    SHA256

    f1a5a873cc3987b2a2a756aec8bacfb6d2c922892ce07a0ffb820a332fe82655

    SHA512

    b0e5c1a9d5dd2aff80485b2b237e6350fbd14d67323fd6a85fbc221e45a2bc0b48a2d46bb371d5498f9246943c8015bacce15d20c4c453bb772690534babf2e6

  • \ProgramData\Synaptics\Synaptics.exe
    MD5

    f65d4cf706c2add18897c640b67c8b84

    SHA1

    dd63c38d5fd4a2d466a36dc35e8c082237de24f8

    SHA256

    f1a5a873cc3987b2a2a756aec8bacfb6d2c922892ce07a0ffb820a332fe82655

    SHA512

    b0e5c1a9d5dd2aff80485b2b237e6350fbd14d67323fd6a85fbc221e45a2bc0b48a2d46bb371d5498f9246943c8015bacce15d20c4c453bb772690534babf2e6

  • \Users\Admin\AppData\Local\Temp\._cache_c5373389b0bd0226c0d3cfbc783a535577cc87833051ad122444d96593472169.exe
    MD5

    8912cf5f728c02cff8eea330e5e76afc

    SHA1

    e6e8ff5eca40b3e719c790ba5b813693ac372b0f

    SHA256

    b9654bf6cd45bbd8e6f80ab62c381a1cf14a895c499f3e71d361edae7d0cb3a9

    SHA512

    0ea697b0def5ee99cda6a20bb1b10af25ab530f4b088671005bf0b547a9d7a77d49c81cda7fa29c46d2a1c067a7b090848aba0700b4b9c1ad673615151f541a5

  • memory/788-60-0x0000000075551000-0x0000000075553000-memory.dmp
    Filesize

    8KB

  • memory/788-61-0x00000000001B0000-0x00000000001B1000-memory.dmp
    Filesize

    4KB

  • memory/1756-68-0x0000000000000000-mapping.dmp
  • memory/1756-71-0x0000000000220000-0x0000000000221000-memory.dmp
    Filesize

    4KB

  • memory/1968-63-0x0000000000000000-mapping.dmp
  • memory/1968-72-0x0000000000140000-0x0000000000141000-memory.dmp
    Filesize

    4KB

  • memory/1968-73-0x00000000013C0000-0x0000000001A35000-memory.dmp
    Filesize

    6.5MB