Analysis

  • max time kernel
    150s
  • 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
    07/05/2026, 04:13

General

  • Target
    2026-05-07_91e3e314f34c07efcc9fdda2449da6d8_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee.exe
  • Size 1.2MB
  • Sample260507-ethg8aex8x
  • SHA256 b9c16945f788f229f71ce1d010b3da6f17cf21f1151aca0e7f77a3c852f166e4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: MiniDuke, CosmicDuke,TinyBaron

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

  • Detects MiniDuke aka CosmicDuke or TinyBaron 3 IoCs
  • 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.

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

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

  • 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.

  • Modifies Control Panel 5 IoCs
  • 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\2026-05-07_91e3e314f34c07efcc9fdda2449da6d8_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-07_91e3e314f34c07efcc9fdda2449da6d8_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee.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:3264
    • C:\Windows\SysWOW64\ipfw.exe
      C:\Windows\SysWOW64\ipfw.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4172
  • C:\Windows\SysWOW64\ipfw.exe
    C:\Windows\SysWOW64\ipfw.exe
    1⤵
    • Executes dropped EXE
    PID:2764
  • C:\Windows\SysWOW64\tapicms.exe
    C:\Windows\SysWOW64\tapicms.exe apw
    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:3088
  • C:\Windows\SysWOW64\tapicms.exe
    C:\Windows\SysWOW64\tapicms.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4548
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 536
      2⤵
      • Program crash
      PID:412
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 528
      2⤵
      • Program crash
      PID:5588
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 692
      2⤵
      • Program crash
      PID:3284
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4548 -ip 4548
    1⤵
      PID:5948
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4548 -ip 4548
      1⤵
        PID:1892
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4548 -ip 4548
        1⤵
          PID:1676

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              netwin.scr

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

              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

              ipfw.exe

              • Path C:\Windows\SysWOW64\ipfw.exe
              • Size 590KB
              • SHA256 efd75e5a513541c2c7e59338c41716950362ca474f4c44b858805e1fdc377bc4
              • MD5 SHA1 SHA512 SSDEEP TLSH

              tapicms.exe

              • Path C:\Windows\SysWOW64\tapicms.exe
              • Size 1.8MB
              • SHA256 701c3659b441b8402f9997ab63baee23b2a8ccadd6ebfcbd1933ecc52496d09b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/3088-79-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3088-83-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3088-143-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3088-92-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3088-86-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3088-37-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3088-39-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3088-80-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3264-0-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3264-5-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3264-81-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3264-3-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3264-4-0x0000000000400000-0x0000000000420000-memory.dmp

              memory/3264-87-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/3264-2-0x0000000002710000-0x0000000002758000-memory.dmp

              memory/3264-1-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/4548-82-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/4548-43-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/4548-84-0x0000000000440000-0x0000000000502000-memory.dmp

              memory/4548-91-0x0000000000400000-0x0000000000438000-memory.dmp