Analysis

  • max time kernel
    90s
  • max time network
    128s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19/06/2024, 17:13

General

  • Target
    1e5ae623d5d328e48149f954fb43d3a36cabe967e330abe3505e4a1d54fe12bf.exe
  • Size 2.4MB
  • Sample240619-vrj62avcpd
  • SHA256 1e5ae623d5d328e48149f954fb43d3a36cabe967e330abe3505e4a1d54fe12bf
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • vidar

C2
  • https://t.me/memve4erin

  • https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Extracted

Family
  • risepro

C2
  • 5.42.67.8:50500

Signatures

  • Detect Vidar Stealer 5 IoCs
  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 2 IoCs
  • RisePro

    RisePro stealer is an infostealer distributed by PrivateLoader.

  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 1 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e5ae623d5d328e48149f954fb43d3a36cabe967e330abe3505e4a1d54fe12bf.exe
    "C:\Users\Admin\AppData\Local\Temp\1e5ae623d5d328e48149f954fb43d3a36cabe967e330abe3505e4a1d54fe12bf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3544
      • C:\ProgramData\ECFHJKEBAA.exe
        "C:\ProgramData\ECFHJKEBAA.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:704
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:4124
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 704 -s 264
            4⤵
            • Program crash
            PID:2812
        • C:\ProgramData\IDGDAAKFHI.exe
          "C:\ProgramData\IDGDAAKFHI.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2648
        • C:\ProgramData\EGCFHDAKEC.exe
          "C:\ProgramData\EGCFHDAKEC.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:3184
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:4640
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              4⤵
                PID:2312
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3184 -s 292
                4⤵
                • Program crash
                PID:2496
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BAFCGIJDAFBK" & exit
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:2204
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • Delays execution with timeout.exe
                PID:1544
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 704 -ip 704
          1⤵
            PID:3988
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3184 -ip 3184
            1⤵
              PID:3620

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  ECFHJKEBAA.exe

                  • Path C:\ProgramData\ECFHJKEBAA.exe
                  • Size 1.8MB
                  • SHA256 9cf43d480f6319717934b1a3f97682a4454c1742e2409aa416ba719e606c34ca
                  • MD5 SHA1 SHA512 SSDEEP

                  EGCFHDAKEC.exe

                  • Path C:\ProgramData\EGCFHDAKEC.exe
                  • Size 525KB
                  • SHA256 fa4491dbe5eb3d35c9f5884d746235769999d536d30033f4cf38633ce2343ede
                  • MD5 SHA1 SHA512 SSDEEP

                  IDGDAAKFHI.exe

                  • Path C:\ProgramData\IDGDAAKFHI.exe
                  • Size 374KB
                  • SHA256 6f1f0ff69f7bf28a1116549249353fcbf944d8d559aaf9c3ecefddb08e341106
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/704-143-0x0000000001310000-0x0000000001311000-memory.dmp

                  memory/1604-45-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-29-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-5-0x0000000002A10000-0x0000000002A2C000-memory.dmp

                  memory/1604-19-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-63-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-61-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-71-0x0000000074790000-0x0000000074F41000-memory.dmp

                  memory/1604-66-0x0000000074790000-0x0000000074F41000-memory.dmp

                  memory/1604-59-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-57-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-55-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-53-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-52-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-47-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-31-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-27-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-25-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-23-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-21-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-65-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-17-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-15-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-13-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-11-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-9-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-7-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-6-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-49-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-3-0x0000000005030000-0x00000000050FC000-memory.dmp

                  memory/1604-37-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-4-0x0000000074790000-0x0000000074F41000-memory.dmp

                  memory/1604-41-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-43-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-35-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-33-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-39-0x0000000002A10000-0x0000000002A25000-memory.dmp

                  memory/1604-0-0x000000007479E000-0x000000007479F000-memory.dmp

                  memory/1604-1-0x00000000001D0000-0x0000000000442000-memory.dmp

                  memory/1604-2-0x0000000004F70000-0x000000000500C000-memory.dmp

                  memory/2648-163-0x0000000004C40000-0x0000000004CD2000-memory.dmp

                  memory/2648-162-0x00000000053C0000-0x0000000005966000-memory.dmp

                  memory/2648-189-0x0000000009EA0000-0x000000000A3CC000-memory.dmp

                  memory/2648-188-0x0000000009150000-0x0000000009312000-memory.dmp

                  memory/2648-160-0x0000000000170000-0x00000000001D2000-memory.dmp

                  memory/2648-161-0x0000000002600000-0x0000000002620000-memory.dmp

                  memory/2648-180-0x0000000007990000-0x0000000007A9A000-memory.dmp

                  memory/2648-179-0x0000000007E30000-0x0000000008448000-memory.dmp

                  memory/2648-164-0x0000000004D30000-0x0000000004D3A000-memory.dmp

                  memory/2648-181-0x00000000078D0000-0x00000000078E2000-memory.dmp

                  memory/2648-187-0x00000000089D0000-0x00000000089EE000-memory.dmp

                  memory/2648-186-0x0000000008A10000-0x0000000008A86000-memory.dmp

                  memory/2648-184-0x00000000086C0000-0x0000000008726000-memory.dmp

                  memory/2648-182-0x0000000007930000-0x000000000796C000-memory.dmp

                  memory/2648-183-0x0000000007AA0000-0x0000000007AEC000-memory.dmp

                  memory/3544-72-0x0000000000400000-0x0000000000648000-memory.dmp

                  memory/3544-185-0x0000000000400000-0x0000000000648000-memory.dmp

                  memory/3544-69-0x0000000000400000-0x0000000000648000-memory.dmp

                  memory/3544-86-0x0000000000400000-0x0000000000648000-memory.dmp

                  memory/3544-67-0x0000000000400000-0x0000000000648000-memory.dmp

                  memory/4124-147-0x0000000000400000-0x0000000000596000-memory.dmp

                  memory/4124-191-0x0000000000400000-0x0000000000596000-memory.dmp