Overview

overview

10

Static

static

3

2026-04-26...ar.exe

windows10-2004-x64

10

2026-04-26...ar.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    26/04/2026, 09:48

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General

  • Target
    2026-04-26_09b0a70c09bcf2aea3e4fbe56c16774d_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.8MB
  • Sample260426-lssecscz4v
  • SHA256 25014c3562d2ae7d2884ebfc52960ede1b842992921c29a1df438a25a72d5d8c
  • 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 2 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\2026-04-26_09b0a70c09bcf2aea3e4fbe56c16774d_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-26_09b0a70c09bcf2aea3e4fbe56c16774d_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:4636
    • C:\Windows\SysWOW64\sysschd.exe
      C:\Windows\SysWOW64\sysschd.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4868
  • C:\Windows\SysWOW64\wmdns.exe
    C:\Windows\SysWOW64\wmdns.exe hgj
    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:5260
  • C:\Windows\SysWOW64\sysschd.exe
    C:\Windows\SysWOW64\sysschd.exe
    1⤵
    • Executes dropped EXE
    PID:5108
  • C:\Windows\SysWOW64\wmdns.exe
    C:\Windows\SysWOW64\wmdns.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1732
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 504
      2⤵
      • Program crash
      PID:396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 496
      2⤵
      • Program crash
      PID:6032
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 660
      2⤵
      • Program crash
      PID:1916
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1732 -ip 1732
    1⤵
      PID:5416
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1732 -ip 1732
      1⤵
        PID:2680
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1732 -ip 1732
        1⤵
          PID:2112

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              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

              fswm.scr
              • Path C:\Windows\SysWOW64\fswm.scr
              • Size 1.0MB
              • SHA256 2f1b4a1669e4ce31ea57a2f6147b4cc4b5e19aecfaab4d7bc47af0b2afbc7cf5
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              sysschd.exe
              • Path C:\Windows\SysWOW64\sysschd.exe
              • Size 856KB
              • SHA256 d29505b75edc8f72c635344d8bc41beeaed320be5ddbc6a578b8bb28df802bc2
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              wmdns.exe
              • Path C:\Windows\SysWOW64\wmdns.exe
              • Size 2.8MB
              • SHA256 9abc6f3d2b793e283a005ae8f193fc71a12f412b9896924f6a901050e36145fe
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/1732-41-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1732-42-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1732-86-0x0000000000400000-0x0000000000438000-memory.dmp
              Download

              memory/1732-83-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/1732-81-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4636-2-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4636-0-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4636-1-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/4636-4-0x0000000000400000-0x0000000000420000-memory.dmp
              Download

              memory/4636-3-0x0000000002210000-0x0000000002258000-memory.dmp
              Download

              memory/4636-17-0x0000000000530000-0x000000000058F000-memory.dmp
              Download

              memory/5260-35-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/5260-37-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/5260-80-0x0000000000400000-0x00000000005D5000-memory.dmp
              Download

              memory/5260-138-0x0000000001AD0000-0x0000000001B2F000-memory.dmp
              Download