Overview

overview

10

Static

static

3

2026-08-04...ar.exe

windows10-2004-x64

10

2026-08-04...ar.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 16:34

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General

  • Target
    2026-08-04_1a1f054c8c9ad9f7e268da7649c74c22_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.8MB
  • Sample260804-t3fgjsdf88
  • SHA256 2c9f7f850f826f2d930afca8ecf6dfc2925b940687320cfcad447cff2130ec8e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
apt29aptcollectiondefense_evasiondiscoverycosmicdukespywarestealer

Malware Config

Signatures

  • Family: CosmicDuke,TinyBaron

    CosmicDuke aka TinyBaron is an information stealer used by the APT29 group.

    stealercosmicduke
  • Detects CosmicDuke or TinyBaron 3 IoCs
    stealeraptapt29
  • 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\2026-08-04_1a1f054c8c9ad9f7e268da7649c74c22_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_1a1f054c8c9ad9f7e268da7649c74c22_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:1684
    • C:\Windows\SysWOW64\msdns.exe
      C:\Windows\SysWOW64\msdns.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4648
  • C:\Windows\SysWOW64\hostui.exe
    C:\Windows\SysWOW64\hostui.exe pts
    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:220
  • C:\Windows\SysWOW64\hostui.exe
    C:\Windows\SysWOW64\hostui.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1596
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 648
      2⤵
      • Program crash
      PID:3440
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 656
      2⤵
      • Program crash
      PID:3596
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 500
      2⤵
      • Program crash
      PID:3320
  • C:\Windows\SysWOW64\msdns.exe
    C:\Windows\SysWOW64\msdns.exe
    1⤵
    • Executes dropped EXE
    PID:3064
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1596 -ip 1596
    1⤵
      PID:560
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1596 -ip 1596
      1⤵
        PID:4672
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1596 -ip 1596
        1⤵
          PID:1712

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

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

              hostui.exe
              • Path C:\Windows\SysWOW64\hostui.exe
              • Size 2.8MB
              • SHA256 212a0cb1d47e001aa74bb674df7cf54be5e48929add8d190819a5c70281f296d
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              msdns.exe
              • Path C:\Windows\SysWOW64\msdns.exe
              • Size 1.6MB
              • SHA256 14927c600b41940774ad8f8dec8393aaeab4bf9825fcb5176cf9e671c5aa63a1
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/220-77-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/220-35-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1596-40-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1596-39-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1596-78-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1596-80-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1596-83-0x0000000000400000-0x0000000000438000-memory.dmp
              Download

              memory/1684-2-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1684-3-0x0000000000770000-0x00000000007B8000-memory.dmp
              Download

              memory/1684-4-0x0000000000400000-0x0000000000420000-memory.dmp
              Download

              memory/1684-1-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1684-0-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download