Overview

overview

10

Static

static

3

2026-06-03...ar.exe

windows10-2004-x64

10

2026-06-03...ar.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    03/06/2026, 15:14

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General

  • Target
    2026-06-03_e07ea964dfc21a40b172ab181bbe82ec_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.7MB
  • Sample260603-smlsysav5v
  • SHA256 45e64f19690023260a10faa649a874a41f639534c43623a62a2b5c2ddfc83cdd
  • 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\2026-06-03_e07ea964dfc21a40b172ab181bbe82ec_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-03_e07ea964dfc21a40b172ab181bbe82ec_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:2060
    • C:\Windows\SysWOW64\fseng.exe
      C:\Windows\SysWOW64\fseng.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:116
  • C:\Windows\SysWOW64\tapihost.exe
    C:\Windows\SysWOW64\tapihost.exe lx1
    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:1492
  • C:\Windows\SysWOW64\tapihost.exe
    C:\Windows\SysWOW64\tapihost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2980 -s 504
      2⤵
      • Program crash
      PID:1824
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2980 -s 652
      2⤵
      • Program crash
      PID:2904
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2980 -s 648
      2⤵
      • Program crash
      PID:2400
  • C:\Windows\SysWOW64\fseng.exe
    C:\Windows\SysWOW64\fseng.exe
    1⤵
    • Executes dropped EXE
    PID:4064
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2980 -ip 2980
    1⤵
      PID:1844
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2980 -ip 2980
      1⤵
        PID:2604
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2980 -ip 2980
        1⤵
          PID:2996

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

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

              tapidsp.exe
              • Path C:\Users\Admin\AppData\Local\Temp\tapidsp.exe
              • Size 5KB
              • SHA256 5b50e26a01b320f05d66727e9d220d5858cdac203ff62e4b9ced1cafc2683637
              • MD5 SHA1 SHA512 SSDEEP 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

              fseng.exe
              • Path C:\Windows\SysWOW64\fseng.exe
              • Size 567KB
              • SHA256 aa1c4997451c05cbffceddf24507fd35004e1f3776f89a0c5c100cab5d5d2747
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              tapihost.exe
              • Path C:\Windows\SysWOW64\tapihost.exe
              • Size 2.7MB
              • SHA256 2b33f67d22a3ab94b50266359acc80be35f7130945c06c9ac439cf043e8b5878
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/1492-78-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1492-36-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2060-4-0x0000000000400000-0x0000000000420000-memory.dmp
              Download

              memory/2060-5-0x00000000025F0000-0x0000000002638000-memory.dmp
              Download

              memory/2060-0-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2060-3-0x00000000025F0000-0x0000000002638000-memory.dmp
              Download

              memory/2060-2-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2060-1-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2980-40-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2980-39-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/2980-79-0x0000000000790000-0x00000000007D8000-memory.dmp
              Download

              memory/2980-81-0x0000000000790000-0x00000000007D8000-memory.dmp
              Download

              memory/2980-83-0x0000000000400000-0x0000000000438000-memory.dmp
              Download