Analysis

  • max time kernel
    146s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02/09/2024, 16:12

General

  • Target
    66d5ddcec1520_shtr.exe
  • Size 206KB
  • Sample240902-tnj67avdkf
  • SHA256 86bb9a397e62d756578dbe6c40cc07050f2066db6fb5d54499e03469a7cdccd5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

Botnet
  • default

C2
  • http://46.8.231.109

Attributes
  • url_path

    /c4754d4f680ead72.php

Extracted

Family
  • vidar

C2
  • https://t.me/edm0d

  • https://steamcommunity.com/profiles/76561199768374681

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

  • Detect Vidar Stealer 20 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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 5 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\66d5ddcec1520_shtr.exe
    "C:\Users\Admin\AppData\Local\Temp\66d5ddcec1520_shtr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:2176
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4800
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminEGHJKFHJJJ.exe"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:400
          • C:\Users\AdminEGHJKFHJJJ.exe
            "C:\Users\AdminEGHJKFHJJJ.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1500
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              5⤵
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1968
              • C:\ProgramData\FCAECAKKFB.exe
                "C:\ProgramData\FCAECAKKFB.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:108
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                  7⤵
                    PID:2380
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:1852
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 1264
                      8⤵
                      • Program crash
                      PID:2820
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 1276
                      8⤵
                      • Program crash
                      PID:3120
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 1320
                      8⤵
                      • Program crash
                      PID:2196
                • C:\ProgramData\GCGDGHCBGD.exe
                  "C:\ProgramData\GCGDGHCBGD.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:6080
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Checks processor information in registry
                    • Suspicious behavior: EnumeratesProcesses
                    PID:5532
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\HDBGHDHCGHCA" & exit
                  6⤵
                  • System Location Discovery: System Language Discovery
                  PID:5564
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout /t 10
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:3480
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminDAAFIIJDAA.exe"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1232
            • C:\Users\AdminDAAFIIJDAA.exe
              "C:\Users\AdminDAAFIIJDAA.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:4136
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                5⤵
                • System Location Discovery: System Language Discovery
                PID:468
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 468 -s 1264
                  6⤵
                  • Program crash
                  PID:1472
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 468 -ip 468
        1⤵
          PID:5292
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1852 -ip 1852
          1⤵
            PID:2744
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1852 -ip 1852
            1⤵
              PID:6116
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1852 -ip 1852
              1⤵
                PID:5092

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    AEBGHD

                    • Path C:\ProgramData\CAKKEGDGCGDA\AEBGHD
                    • Size 40KB
                    • SHA256 42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914
                    • MD5 SHA1 SHA512 SSDEEP

                    AEBGHD

                    • Path C:\ProgramData\CAKKEGDGCGDA\AEBGHD
                    • Size 160KB
                    • SHA256 e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855
                    • MD5 SHA1 SHA512 SSDEEP

                    JDGCGD

                    • Path C:\ProgramData\CAKKEGDGCGDA\JDGCGD
                    • Size 20KB
                    • SHA256 ccd15f9c7a997ae2b5320ea856c7efc54b5055254d41a443d21a60c39c565cb7
                    • MD5 SHA1 SHA512 SSDEEP

                    HDAKFC

                    • Path C:\ProgramData\HDBGHDHCGHCA\HDAKFC
                    • Size 112KB
                    • SHA256 eeb23424586eb7bc62b51b19f1719c6571b71b167f4d63f25984b7f5c5436db1
                    • MD5 SHA1 SHA512 SSDEEP

                    JDGCGD

                    • Path C:\ProgramData\HDBGHDHCGHCA\JDGCGD
                    • Size 114KB
                    • SHA256 51e234c09098ea32dd1422ce8304a043ace2962e24528988df220cc4f5358191
                    • MD5 SHA1 SHA512 SSDEEP

                    JEBKJD

                    • Path C:\ProgramData\HDBGHDHCGHCA\JEBKJD
                    • Size 10KB
                    • SHA256 9ec49336ffbe79b410b811702a0910be82b270459e0d9e9eb006676ce84a9a42
                    • MD5 SHA1 SHA512 SSDEEP

                    freebl3.dll

                    • Path C:\ProgramData\freebl3.dll
                    • Size 669KB
                    • SHA256 edd043f2005dbd5902fc421eabb9472a7266950c5cbaca34e2d590b17d12f5fa
                    • MD5 SHA1 SHA512 SSDEEP

                    mozglue.dll

                    • Path C:\ProgramData\mozglue.dll
                    • Size 593KB
                    • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
                    • MD5 SHA1 SHA512 SSDEEP

                    msvcp140.dll

                    • Path C:\ProgramData\msvcp140.dll
                    • Size 439KB
                    • SHA256 5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062
                    • MD5 SHA1 SHA512 SSDEEP

                    nss3.dll

                    • Path C:\ProgramData\nss3.dll
                    • Size 2.0MB
                    • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
                    • MD5 SHA1 SHA512 SSDEEP

                    softokn3.dll

                    • Path C:\ProgramData\softokn3.dll
                    • Size 251KB
                    • SHA256 74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a
                    • MD5 SHA1 SHA512 SSDEEP

                    vcruntime140.dll

                    • Path C:\ProgramData\vcruntime140.dll
                    • Size 78KB
                    • SHA256 8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825
                    • MD5 SHA1 SHA512 SSDEEP

                    AdminDAAFIIJDAA.exe

                    • Path C:\Users\AdminDAAFIIJDAA.exe
                    • Size 334KB
                    • SHA256 c45735085c630196f711708160c78f204d8fa3fd36dc7c49cfc039442ae4c9d7
                    • MD5 SHA1 SHA512 SSDEEP

                    AdminEGHJKFHJJJ.exe

                    • Path C:\Users\AdminEGHJKFHJJJ.exe
                    • Size 282KB
                    • SHA256 90c0395f668f198d1aed010aaabbdab7c7f78b5a8c90072f4a2225683ebaac36
                    • MD5 SHA1 SHA512 SSDEEP

                    156887258BBD6E1FEF562837733EA04E_5BBC02CEDFD3F7AC9E268D830CF231EE

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\156887258BBD6E1FEF562837733EA04E_5BBC02CEDFD3F7AC9E268D830CF231EE
                    • Size 2KB
                    • SHA256 2e0e9be598d0f657d9f1f3b4ff8bc5151751b7a639216bf362a40c6453cd6ce2
                    • MD5 SHA1 SHA512

                    223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
                    • Size 2KB
                    • SHA256 235b6b76edce553b578f71630f2142d5912707668009d1d6e9616af094c0e966
                    • MD5 SHA1 SHA512

                    EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
                    • Size 1KB
                    • SHA256 cc4813486165df18b36b09814922c3f054897170ae412a7aa13c1178e25cf56c
                    • MD5 SHA1 SHA512

                    156887258BBD6E1FEF562837733EA04E_5BBC02CEDFD3F7AC9E268D830CF231EE

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\156887258BBD6E1FEF562837733EA04E_5BBC02CEDFD3F7AC9E268D830CF231EE
                    • Size 458B
                    • SHA256 b20ad68ff93ffb81c7c14fcc43af20d02495655d10e755a64ad474c7ca80a7ca
                    • MD5 SHA1 SHA512

                    223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
                    • Size 450B
                    • SHA256 8f7087ee87f36403a48607704edc160a4bdcd310e72d14d8b3d9472c5e833856
                    • MD5 SHA1 SHA512

                    EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
                    • Size 458B
                    • SHA256 dff826d6f708d57a1bdc841de8ac0cdb434981b1001483dd4d08b6f44316bf81
                    • MD5 SHA1 SHA512

                    GCGDGHCBGD.exe.log

                    • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\GCGDGHCBGD.exe.log
                    • Size 425B
                    • SHA256 85ad0d9909461517acf2e24ff116ca350e9b7000b4eefb23aa3647423c9745b4
                    • MD5 SHA1 SHA512

                    memory/468-109-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/468-113-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/468-111-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/1500-102-0x0000000072210000-0x00000000729C1000-memory.dmp

                    memory/1500-89-0x0000000000BD0000-0x0000000000C1A000-memory.dmp

                    memory/1500-90-0x000000007221E000-0x000000007221F000-memory.dmp

                    memory/1968-95-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-235-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-160-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-143-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-161-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-168-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-130-0x0000000022940000-0x0000000022B9F000-memory.dmp

                    memory/1968-185-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-128-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-127-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-144-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-186-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-103-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-193-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-194-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1968-98-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/4060-0-0x000000007428E000-0x000000007428F000-memory.dmp

                    memory/4060-57-0x0000000074280000-0x0000000074A31000-memory.dmp

                    memory/4060-7-0x0000000074280000-0x0000000074A31000-memory.dmp

                    memory/4060-1-0x0000000000D20000-0x0000000000D58000-memory.dmp

                    memory/4136-107-0x0000000000410000-0x0000000000468000-memory.dmp

                    memory/4800-6-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/4800-58-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/4800-10-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                    memory/4800-8-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/4800-260-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/4800-3-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/5532-242-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5532-258-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5532-244-0x00000000226D0000-0x000000002292F000-memory.dmp

                    memory/5532-243-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5532-259-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5532-232-0x0000000000400000-0x0000000000657000-memory.dmp