Resubmissions

17-08-2024 00:37

240817-ayyyjszfqj 10

16-08-2024 15:39

240816-s3nbqasfka 10

Analysis

  • max time kernel
    134s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2024 00:37

General

  • Target

    zbi.exe

  • Size

    146KB

  • MD5

    6edfb62405f50d7fb16882ca9b16ed36

  • SHA1

    73c346267e9527ca5886bf8a90b77f9ebceb58fe

  • SHA256

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13

  • SHA512

    b3ea04a001c846af5d93435db055986a448fc5d01e86a9292937ce085609b653d41719111d2d031c8b6694eb01d5856e86f9e1a65e8cdc43af51a8ed3d370d2f

  • SSDEEP

    3072:PqJogYkcSNm9V7DGoNK696RTpfnEsCygHQlyT:Pq2kc4m9tDHNK6UlJ9CyN

Malware Config

Signatures

  • Renames multiple (616) files with added filename extension

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\zbi.exe
    "C:\Users\Admin\AppData\Local\Temp\zbi.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:6012
    • C:\ProgramData\9C60.tmp
      "C:\ProgramData\9C60.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:5396
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\9C60.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5720
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2220
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:6068
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:5580
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{73129BDA-52DA-4301-94A5-D448BDAAA0D7}.xps" 133683287003220000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        PID:5448
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\raMFGAusF.README.txt
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:4272

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1302416131-1437503476-2806442725-1000\AAAAAAAAAAA

      Filesize

      129B

      MD5

      a9a70748933a37512f4522865764ba45

      SHA1

      0b844192fded271a9bcc4d8983da20fcae1f43bc

      SHA256

      c9953cb82277480bc2087d0a55e6b60243b646fcfd9b56e46366b4bd6a1cc6d3

      SHA512

      f67a8c7ddd15a2b1e8e7174d11cfa6df3bfc2ef04b5beac17971920180770ee480956f2a337b4c7a9506d4360b89370f62a9d0dbb4d89d6a4b1cf1d922b11963

    • C:\ProgramData\9C60.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{73129BDA-52DA-4301-94A5-D448BDAAA0D7}.xps

      Filesize

      13.1MB

      MD5

      043f215fabafa1be7faf5add756a6475

      SHA1

      2cb5be34209214bc71d41f11926178632823c465

      SHA256

      0a0117e375a9e57405940b5a88978512eda703cc25a18f5d8a6425fcddef7088

      SHA512

      9a37122f8c9755cfbd45d5a726ae3abe06bcea809bd6bc2ccc965ecc0290e7c6c399b78adcf54f9a91a786f7259064983f7db4d7e09a28a3164e30e9e7c6799e

    • C:\Users\Admin\AppData\Local\Temp\EEEEEEE

      Filesize

      146KB

      MD5

      b2250b99e540f5b007368305ef6cca59

      SHA1

      7ce24e66179fec932da4d3df3e3b65f92c32e40a

      SHA256

      c176380cdc1f093cc2ceeb862ee64dbac35421e2523d7025d1e446f2c44397aa

      SHA512

      bd76b9e62be37f16496e013bd3be1fc57321b9e790bb9b2f0176791be8f0ea437521ff631a7d2af4504c64362205fc5bd1e5ac53e2c4db4b9ec211089bd0d591

    • C:\Users\Admin\AppData\Local\Temp\{7AB4BA3B-CDCC-46C5-9368-49EA3CBAE595}

      Filesize

      4KB

      MD5

      833474d0a9ca912787b5672c069c5601

      SHA1

      912fa070103ba9f96b5e5d1a3fab81ea6e9640d6

      SHA256

      fb85ad56ba39ab4c337cce2c8105773a49050dd117512574f2f8e43d5725e1a3

      SHA512

      e3b9465b6d45d2fa4e79f2978a6f750781f7281c7ada6d72dbca1e81a154bbdd72dacc28eb2edcd470f52dbff01332d3aaad7985158e511a1cf36378465b4d80

    • C:\Users\Admin\AppData\Local\Temp\{F8B69532-E3F7-497C-896C-D6C38F7A8A9E}

      Filesize

      4KB

      MD5

      13f5f1731564db3f23936cde77cedf7d

      SHA1

      b4b3eb64ea701449ecbe732d90bd545ed59477b0

      SHA256

      1fa76a850ca4aa83f1ce9c2a98ad1d41376c762468a9cfb12866ded41ccd894b

      SHA512

      938e5aa39e932df9a612798e1119b64dbe8f909163d1dee5bba56300b62693b0f6fd7f54025b20d72ec24ca5ea3ea23b6151a9e3e962a8d8c6f35ef85b73a6e4

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

      Filesize

      16B

      MD5

      d29962abc88624befc0135579ae485ec

      SHA1

      e40a6458296ec6a2427bcb280572d023a9862b31

      SHA256

      a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866

      SHA512

      4311e87d8d5559248d4174908817a4ddc917bf7378114435cf12da8ccb7a1542c851812afbaf7dc106771bdb2e2d05f52e7d0c50d110fc7fffe4395592492c2f

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2

      Filesize

      4KB

      MD5

      4cd2a1f548a972c593198af0991734fb

      SHA1

      0b86f9bdea0bdedb1df8e70885e06582a2a95460

      SHA256

      e3b5cca7717a488cf6b6b6a843b2bd92093c7ad51a7d2265559fc6c31931555e

      SHA512

      84feb5bbf15dc46a09079dc08383f83d6e2eca044d4e292bac193c326919ec7f62d8fe51c42a92584bc36334a16397a4854b3da5bb2e1c2501921ae1541e0fc1

    • C:\raMFGAusF.README.txt

      Filesize

      597B

      MD5

      8b868d53629149c6b3a461ff64ce8cef

      SHA1

      b8a0b57cfe78c6d8468bdd5ef52411765a456e41

      SHA256

      5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25

      SHA512

      2fbb224b435621bc8947caf5aa4e294725f7df1c79dfaae1674086c8e92fcdb106d734680ac58e02b112613c778b582b2eaa8e6979dc1d75dc1dccab54f7c337

    • F:\$RECYCLE.BIN\S-1-5-21-1302416131-1437503476-2806442725-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      2f870757bd950ec650f656fdc7777274

      SHA1

      7cf613c4661ef68e74e3208c2569c0f0c830cf76

      SHA256

      d85f3162c44ac3b7e0f12f76baf6bc4049d7ffef76992ae210052978d6dde150

      SHA512

      67b7aeb67d7a21d512de4d8050f6e521130b6c692626392203e10c46c34b0e17db55c96c0f4f0593ac35c296ff3a8a396c08f7143c972477d5c4503a7f55ec47

    • memory/2220-2804-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2808-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2807-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2805-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2803-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2809-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2806-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2799-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2797-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/2220-2798-0x0000019C47830000-0x0000019C47831000-memory.dmp

      Filesize

      4KB

    • memory/3492-2810-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/3492-2812-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/3492-2811-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/3492-2-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/3492-0-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/3492-1-0x0000000002860000-0x0000000002870000-memory.dmp

      Filesize

      64KB

    • memory/5448-2830-0x00007FF961870000-0x00007FF961880000-memory.dmp

      Filesize

      64KB

    • memory/5448-2831-0x00007FF961870000-0x00007FF961880000-memory.dmp

      Filesize

      64KB

    • memory/5448-2827-0x00007FF961870000-0x00007FF961880000-memory.dmp

      Filesize

      64KB

    • memory/5448-2828-0x00007FF961870000-0x00007FF961880000-memory.dmp

      Filesize

      64KB

    • memory/5448-2860-0x00007FF95F810000-0x00007FF95F820000-memory.dmp

      Filesize

      64KB

    • memory/5448-2861-0x00007FF95F810000-0x00007FF95F820000-memory.dmp

      Filesize

      64KB

    • memory/5448-2829-0x00007FF961870000-0x00007FF961880000-memory.dmp

      Filesize

      64KB