Overview

overview

10

Static

static

3

2026-05-02...ar.exe

windows10-2004-x64

10

2026-05-02...ar.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/05/2026, 06:59

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General

  • Target
    2026-05-02_dc05f38298db815fa17c51ef7600eaf9_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.8MB
  • Sample260502-hsayjaav8x
  • SHA256 eb14312a604bab6b7c2a4aad73bc878f5e5ce7e173d24f2bb598a64a9f3d74e5
  • 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 1 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\2026-05-02_dc05f38298db815fa17c51ef7600eaf9_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-02_dc05f38298db815fa17c51ef7600eaf9_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:1104
    • C:\Windows\SysWOW64\fsudf.exe
      C:\Windows\SysWOW64\fsudf.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5116
  • C:\Windows\SysWOW64\ntcms.exe
    C:\Windows\SysWOW64\ntcms.exe ewh
    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:4256
  • C:\Windows\SysWOW64\fsudf.exe
    C:\Windows\SysWOW64\fsudf.exe
    1⤵
    • Executes dropped EXE
    PID:4908
  • C:\Windows\SysWOW64\ntcms.exe
    C:\Windows\SysWOW64\ntcms.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5004
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 536
      2⤵
      • Program crash
      PID:1368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 528
      2⤵
      • Program crash
      PID:4536
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 692
      2⤵
      • Program crash
      PID:3932
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5004 -ip 5004
    1⤵
      PID:3912
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 5004 -ip 5004
      1⤵
        PID:896
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 5004 -ip 5004
        1⤵
          PID:2976

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              fsms.scr
              • Path C:\Users\Admin\AppData\Local\Temp\fsms.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

              fsudf.exe
              • Path C:\Windows\SysWOW64\fsudf.exe
              • Size 651KB
              • SHA256 46a90dee0d57c41cfcf8005096210aed4dd1681435afc7141c972bd3d40298ba
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ntcms.exe
              • Path C:\Windows\SysWOW64\ntcms.exe
              • Size 2.8MB
              • SHA256 48f858174c5cc52c560c861f2d1224df65a318a8f528d048e8ddd5ce79caaf7a
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/1104-3-0x00000000026F0000-0x0000000002738000-memory.dmp
              Download

              memory/1104-5-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/1104-6-0x00000000026F0000-0x0000000002738000-memory.dmp
              Download

              memory/1104-2-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1104-4-0x0000000000400000-0x0000000000420000-memory.dmp
              Download

              memory/1104-0-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1104-36-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/1104-83-0x0000000002E10000-0x0000000002EEA000-memory.dmp
              Download

              memory/1104-1-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1104-84-0x0000000003FD0000-0x0000000003FD7000-memory.dmp
              Download

              memory/1104-82-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/4256-40-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4256-81-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4256-37-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4256-86-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/4256-151-0x0000000001F70000-0x0000000001F77000-memory.dmp
              Download

              memory/4256-150-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/5004-42-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/5004-85-0x0000000002210000-0x0000000002258000-memory.dmp
              Download

              memory/5004-43-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/5004-87-0x0000000000440000-0x00000000004BC000-memory.dmp
              Download

              memory/5004-89-0x0000000002210000-0x0000000002258000-memory.dmp
              Download

              memory/5004-96-0x0000000000400000-0x0000000000438000-memory.dmp
              Download