Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    19-08-2024 03:57

General

  • Target

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe

  • Size

    146KB

  • MD5

    6edfb62405f50d7fb16882ca9b16ed36

  • SHA1

    73c346267e9527ca5886bf8a90b77f9ebceb58fe

  • SHA256

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13

  • SHA512

    b3ea04a001c846af5d93435db055986a448fc5d01e86a9292937ce085609b653d41719111d2d031c8b6694eb01d5856e86f9e1a65e8cdc43af51a8ed3d370d2f

  • SSDEEP

    3072:PqJogYkcSNm9V7DGoNK696RTpfnEsCygHQlyT:Pq2kc4m9tDHNK6UlJ9CyN

Malware Config

Signatures

  • Renames multiple (347) files with added filename extension

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe
    "C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1948
    • C:\ProgramData\C810.tmp
      "C:\ProgramData\C810.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\C810.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1068
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x148
    1⤵
      PID:1628

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2172136094-3310281978-782691160-1000\desktop.ini

      Filesize

      129B

      MD5

      3826e78fa596d56ea99d480104e9374d

      SHA1

      66e6597fb6fd1d01ea9e9188d672bd2922550da2

      SHA256

      85138180cb2740ae6b039d2848363aaed50980ee998c643ca1fb8512511e05da

      SHA512

      93804d3a2d956cd1e12552955e263eb97b11d6097dfc5380e58bcb057a985105ee41acc6269a36aec343bb465d8460b2071266acdbb2ca5fa4bff2fedb46a089

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

      Filesize

      146KB

      MD5

      42f71dee48832e94411e17f29710877a

      SHA1

      f0b6c38287e08300b59bd1af8a0e85f8617eaffc

      SHA256

      c09c1b0e057b12162ff2bae3b396ee696f85aefe31eaf797a4a5b546d84f03e7

      SHA512

      c195b109dea26fc82744d430e1f36eba3e8e38297103fc16f01850e1b88d2bb6e3516b7e0327423eef4780ff4121aff0d323857f804cb07924ba34e9bf65f7d4

    • C:\raMFGAusF.README.txt

      Filesize

      597B

      MD5

      8b868d53629149c6b3a461ff64ce8cef

      SHA1

      b8a0b57cfe78c6d8468bdd5ef52411765a456e41

      SHA256

      5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25

      SHA512

      2fbb224b435621bc8947caf5aa4e294725f7df1c79dfaae1674086c8e92fcdb106d734680ac58e02b112613c778b582b2eaa8e6979dc1d75dc1dccab54f7c337

    • F:\$RECYCLE.BIN\S-1-5-21-2172136094-3310281978-782691160-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      52860e673b48b754cab92e3039e2888b

      SHA1

      a177c7bb059962b5bff1b863057ecd697f031929

      SHA256

      08ef7406d25c573234aba558f29c127fdaf64ef85e744c30c9666b3152dde0d7

      SHA512

      a7fbddd8dde0605f65c806606c71f989bd911dc6f4dbb694e5262130ac6eed35f8e451a47c1f86efe0ea30ebee41c51e9dea4e8272436e39fa822c15b9be31d8

    • \ProgramData\C810.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/1948-0-0x0000000000D70000-0x0000000000DB0000-memory.dmp

      Filesize

      256KB

    • memory/2172-882-0x000000007EF80000-0x000000007EF81000-memory.dmp

      Filesize

      4KB

    • memory/2172-881-0x000000007EF20000-0x000000007EF21000-memory.dmp

      Filesize

      4KB

    • memory/2172-880-0x0000000002360000-0x00000000023A0000-memory.dmp

      Filesize

      256KB

    • memory/2172-879-0x0000000002360000-0x00000000023A0000-memory.dmp

      Filesize

      256KB

    • memory/2172-877-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

      Filesize

      4KB

    • memory/2172-912-0x000000007EF60000-0x000000007EF61000-memory.dmp

      Filesize

      4KB

    • memory/2172-911-0x000000007EF40000-0x000000007EF41000-memory.dmp

      Filesize

      4KB