Analysis

  • max time kernel
    91s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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

Extracted

Family
  • lumma

C2
  • https://stamppreewntnq.shop/api

  • https://locatedblsoqp.shop/api

Signatures

  • Detect Vidar Stealer 20 IoCs
  • Lumma Stealer, LummaC

    Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

  • 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
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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:1856
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminGDHIEHJEBA.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3432
        • C:\Users\AdminGDHIEHJEBA.exe
          "C:\Users\AdminGDHIEHJEBA.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2032
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            5⤵
              PID:4984
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              5⤵
                PID:2664
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                5⤵
                • Checks computer location settings
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                • Checks processor information in registry
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1088
                • C:\ProgramData\FHCBGDAAFB.exe
                  "C:\ProgramData\FHCBGDAAFB.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:740
                  • 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:2016
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 1372
                      8⤵
                      • Program crash
                      PID:1624
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 1340
                      8⤵
                      • Program crash
                      PID:4660
                • C:\ProgramData\KECBGCGCGI.exe
                  "C:\ProgramData\KECBGCGCGI.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:2780
                  • 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:5008
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GDAAKFIDGIEG" & exit
                  6⤵
                  • System Location Discovery: System Language Discovery
                  PID:3696
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout /t 10
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:2432
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminCAEHDBAAEC.exe"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3868
            • C:\Users\AdminCAEHDBAAEC.exe
              "C:\Users\AdminCAEHDBAAEC.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1904
              • 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:588
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 588 -s 1348
                  6⤵
                  • Program crash
                  PID:4436
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 588 -s 1320
                  6⤵
                  • Program crash
                  PID:4556
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 588 -ip 588
        1⤵
          PID:3156
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 588 -ip 588
          1⤵
            PID:2796
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2016 -ip 2016
            1⤵
              PID:4400
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2016 -ip 2016
              1⤵
                PID:2676

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    CBAKJK

                    • Path C:\ProgramData\GDAAKFIDGIEG\CBAKJK
                    • Size 114KB
                    • SHA256 693617c470d7472e751d872341061cfb663f22ee95bdb42f9db01f02cb90df9c
                    • MD5 SHA1 SHA512 SSDEEP

                    CGIJKJ

                    • Path C:\ProgramData\GDAAKFIDGIEG\CGIJKJ
                    • Size 11KB
                    • SHA256 5a4ccff78425ef2a22c31c679c92b6228f712bedd485396264fe7382e70b0ea8
                    • MD5 SHA1 SHA512 SSDEEP

                    EGIDHD

                    • Path C:\ProgramData\GDAAKFIDGIEG\EGIDHD
                    • Size 116KB
                    • SHA256 8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
                    • MD5 SHA1 SHA512 SSDEEP

                    GDAAKF

                    • Path C:\ProgramData\JJECGHJDBFIJ\GDAAKF
                    • Size 160KB
                    • SHA256 e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855
                    • MD5 SHA1 SHA512 SSDEEP

                    GDAAKF

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

                    GHIJJE

                    • Path C:\ProgramData\JJECGHJDBFIJ\GHIJJE
                    • Size 20KB
                    • SHA256 ccd15f9c7a997ae2b5320ea856c7efc54b5055254d41a443d21a60c39c565cb7
                    • 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

                    AdminCAEHDBAAEC.exe

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

                    AdminGDHIEHJEBA.exe

                    • Path C:\Users\AdminGDHIEHJEBA.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 6b03d33f699b64ef549f969ba79c46f363818a0cfbe6005a3b14d25696fbcf20
                    • MD5 SHA1 SHA512

                    223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
                    • Size 450B
                    • SHA256 b1db5b3f24e26fc2655c2632e460076b05058955bcbe78e29ea671e1636ca671
                    • MD5 SHA1 SHA512

                    EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
                    • Size 458B
                    • SHA256 f4e79c9c55b331d7eec5225d78b83aff577f79685e86039b55738240afeac902
                    • MD5 SHA1 SHA512

                    KECBGCGCGI.exe.log

                    • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\KECBGCGCGI.exe.log
                    • Size 425B
                    • SHA256 34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
                    • MD5 SHA1 SHA512

                    memory/588-120-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/588-124-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/588-123-0x0000000000400000-0x000000000045B000-memory.dmp

                    memory/1088-158-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-95-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-141-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-126-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-142-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-127-0x0000000022860000-0x0000000022ABF000-memory.dmp

                    memory/1088-125-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-165-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-193-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-167-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-192-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-234-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-92-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-100-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-184-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1088-185-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/1856-7-0x0000000074720000-0x0000000074ED0000-memory.dmp

                    memory/1856-1-0x0000000000320000-0x0000000000358000-memory.dmp

                    memory/1856-0-0x000000007472E000-0x000000007472F000-memory.dmp

                    memory/1856-88-0x0000000074720000-0x0000000074ED0000-memory.dmp

                    memory/1904-118-0x00000000004C0000-0x0000000000518000-memory.dmp

                    memory/1988-91-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/1988-6-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/1988-259-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/1988-5-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/1988-9-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                    memory/1988-8-0x0000000000400000-0x0000000000643000-memory.dmp

                    memory/2032-99-0x00000000728C0000-0x0000000073070000-memory.dmp

                    memory/2032-87-0x0000000000410000-0x000000000045A000-memory.dmp

                    memory/2032-89-0x00000000728CE000-0x00000000728CF000-memory.dmp

                    memory/2032-166-0x00000000728C0000-0x0000000073070000-memory.dmp

                    memory/5008-241-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5008-242-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5008-243-0x0000000022320000-0x000000002257F000-memory.dmp

                    memory/5008-257-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5008-258-0x0000000000400000-0x0000000000657000-memory.dmp

                    memory/5008-231-0x0000000000400000-0x0000000000657000-memory.dmp