Overview

overview

10

Static

static

3

2026-05-22...ar.exe

windows10-2004-x64

10

2026-05-22...ar.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 17:06

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General

  • Target
    2026-05-22_cef15f302ef517030820639f4ea2a4bf_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.2MB
  • Sample260522-vmkl1abs4q
  • SHA256 c36330d26be3a471f53abb537fe8f8a21ed41f08db9c5e2cfaabc4a561a36ea8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
apt29aptbackdoorcollectiondefense_evasiondiscoveryminidukespywarestealer

Malware Config

Signatures

  • Family: MiniDuke, CosmicDuke,TinyBaron

    MiniDuke aka CosmicDuke or TinyBaron is a backdoor used by the APT29 group, written in C++.

    backdoorminiduke
  • Detects MiniDuke aka CosmicDuke or TinyBaron 3 IoCs
    backdooraptapt29
  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
    collection
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Enumerates connected drives 3 TTPs 42 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 16 IoCs
  • Program crash 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

    discovery
  • Modifies Control Panel 5 IoCs
    defense_evasion
  • Modifies data under HKEY_USERS 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-22_cef15f302ef517030820639f4ea2a4bf_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-22_cef15f302ef517030820639f4ea2a4bf_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Enumerates connected drives
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_win_path
    PID:2672
    • C:\Windows\SysWOW64\wdmmgr.exe
      C:\Windows\SysWOW64\wdmmgr.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3592
  • C:\Windows\SysWOW64\objnt.exe
    C:\Windows\SysWOW64\objnt.exe dm0
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:4668
  • C:\Windows\SysWOW64\objnt.exe
    C:\Windows\SysWOW64\objnt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 520
      2⤵
      • Program crash
      PID:2052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 516
      2⤵
      • Program crash
      PID:556
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 652
      2⤵
      • Program crash
      PID:1376
  • C:\Windows\SysWOW64\wdmmgr.exe
    C:\Windows\SysWOW64\wdmmgr.exe
    1⤵
    • Executes dropped EXE
    PID:1452
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5044 -ip 5044
    1⤵
      PID:3912
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 5044 -ip 5044
      1⤵
        PID:4808
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5044 -ip 5044
        1⤵
          PID:3636

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              wminf.scr
              • Path C:\Users\Admin\AppData\Local\Temp\wminf.scr
              • Size 3KB
              • SHA256 47f3405ab0da5af125bcc6ebb6d17a1573b090c54d7a0a00630ec170ccc4b9d1
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF8094E303}.pol
              • Path C:\Users\Public\Documents\ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF8094E303}.pol
              • Size 4B
              • SHA256 443c07a2c83b7b0253a325d2b72ac757c3aa5b41cd749842bc74fb3ee9b26866
              • MD5 SHA1 SHA512
              Submit Download

              objnt.exe
              • Path C:\Windows\SysWOW64\objnt.exe
              • Size 2.2MB
              • SHA256 1cf9c49f872023cda661d6b3bf0ff0cfb6d1173bbd47a71269dd3a49a1bf34d0
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              wdmmgr.exe
              • Path C:\Windows\SysWOW64\wdmmgr.exe
              • Size 1.6MB
              • SHA256 ef8c600a1098ed7d8411e788196dfe9d51add195e065d591734500e80de29f00
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/2672-0-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/2672-3-0x00000000022F0000-0x0000000002338000-memory.dmp
              Download

              memory/2672-2-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/2672-4-0x0000000000400000-0x0000000000420000-memory.dmp
              Download

              memory/2672-1-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/4668-35-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/4668-77-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/5044-39-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/5044-40-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/5044-78-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/5044-80-0x0000000000400000-0x00000000005AF000-memory.dmp
              Download

              memory/5044-82-0x0000000000400000-0x0000000000438000-memory.dmp
              Download