Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2024 11:18

General

  • Target

    2024-09-22_ef8b996e4d7e84c179f8268f3d686195_darkside.exe

  • Size

    146KB

  • MD5

    ef8b996e4d7e84c179f8268f3d686195

  • SHA1

    07057ff4fd122bca513bbce0cbaa1174d50caf01

  • SHA256

    d582110cd8a31d867e1a1eada4fb726acbbf960bed0aafeec854e455bc53403f

  • SHA512

    6c434febdbf2e57328a118d249d3a8ed736749671b605c9baabecbcafc4040ab10f0c0ce94f6f2551286fc213b4f88a6079271ff4971f524a36211b25f70b90b

  • SSDEEP

    3072:gqJogYkcSNm9V7DXW5I4KNGHsOqhNDvtdT:gq2kc4m9tDXW5fdqh

Malware Config

Signatures

  • Renames multiple (376) 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\2024-09-22_ef8b996e4d7e84c179f8268f3d686195_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-22_ef8b996e4d7e84c179f8268f3d686195_darkside.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:2384
    • C:\ProgramData\CF8F.tmp
      "C:\ProgramData\CF8F.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:1804
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\CF8F.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1128
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x14c
    1⤵
      PID:2192

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1506706701-1246725540-2219210854-1000\desktop.ini

      Filesize

      129B

      MD5

      c6cec1d112dcddf2419769583c8a3653

      SHA1

      ca94c45de7eedef8d92ef12de7af2f3e348f46be

      SHA256

      b605251d629292b6be9e63f19f8da992a78585df5471dc9c6187dc6099735904

      SHA512

      7ea2bd752e21ce698f957093404c43cb64cd8d79a1c077e21cedfdae6f8858311b8639b1410bd82c8297cb20c1ac4fa6779b98bb51f91cab9a468804b605ef64

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

      Filesize

      146KB

      MD5

      a927ac83043095998075b291ed00eb3c

      SHA1

      4463b561f77eb1fdfc8ddb642645845b631dd64c

      SHA256

      440090996603ac4cc757495a46e91472a9e874ee767ce6f58c1632b7732f53e4

      SHA512

      dbc9a99d95bc4991dbecaa19f2cea36bb4d1c2ccb8544a59c36452e8bd968e25ae2089b07f91d2665ffe2fc59f27a4be0892e9effe74fd51b79e5bccbbfe8cdf

    • C:\iFnyJHFpx.README.txt

      Filesize

      638B

      MD5

      e5bc1b8f423f3cce04388bfbe53d93ff

      SHA1

      54e173bb949842e15150102631a2fd8c7fc0d967

      SHA256

      7c750178e9525b4eef587eed36c7040a4806207909e4463a56f33073081b7de5

      SHA512

      aa720ad06776f38ce63d67b743ee019bef1130874a52d7825559e559a056e2ed5c543290a1c13e6ea733204791865ba17f9d4b1d0650e64db1f89af0da7b693f

    • F:\$RECYCLE.BIN\S-1-5-21-1506706701-1246725540-2219210854-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      adaa5163c6c1eb29c23c6effeb9a0f3d

      SHA1

      a801644a2353664de863c72655f83ec224b85cb9

      SHA256

      cbca31ecd1ea3b93373176d80319084504f1738b92430d012d0a91d6623e30c7

      SHA512

      2bf2527fc3c2a3491bc53e45607cb3bd4f3918839ab1650875c70d8bd80c5a433fe3368f3871f710693971e05e49b7f7a68d3e21ad93d87cb91a895ccba2086e

    • \ProgramData\CF8F.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/1804-906-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

    • memory/1804-908-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/1804-910-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/1804-909-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2384-0-0x0000000000B70000-0x0000000000BB0000-memory.dmp

      Filesize

      256KB