Analysis

  • max time kernel
    161s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-06-2024 01:08

General

  • Target

    2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe

  • Size

    425KB

  • MD5

    c64af626c4ed0784e010f5f2210e97f4

  • SHA1

    03ff97d0f1530600ef134d64ddeabbe5770432a6

  • SHA256

    2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417

  • SHA512

    b8905e33b1a01fc94ed440c7c435e58b2fb43639aa377118e1ab894de2bf20d52803fd80e73c863c4bb8b8fda6cf246e7d942cc8f985e3d81a9c7702af268f0a

  • SSDEEP

    12288:tAZeNp7Ik3kXzCNAt8T7yejH2KlN2fq3S9:tAop5KCNEoWS3

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

10.1

Botnet

cac73a25dd295fef8853d330a75f6da4

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

Signatures

  • Detect Vidar Stealer 11 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.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 11 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 11 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 11 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 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 local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe
    "C:\Users\Admin\AppData\Local\Temp\2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2696
    • 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
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4224
      • C:\ProgramData\FBKFCFBFID.exe
        "C:\ProgramData\FBKFCFBFID.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3332
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4664
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 276
          4⤵
          • Program crash
          PID:928
      • C:\ProgramData\JKEGIDGDGH.exe
        "C:\ProgramData\JKEGIDGDGH.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3220
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:4348
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 240
            4⤵
            • Program crash
            PID:5016
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JDBGHIIDAECB" & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1376
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            4⤵
            • Delays execution with timeout.exe
            PID:1580
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2696 -ip 2696
      1⤵
        PID:500
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:2816
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3204 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:3
          1⤵
            PID:488
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3332 -ip 3332
            1⤵
              PID:432
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3220 -ip 3220
              1⤵
                PID:5060

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\FBKFCFBFID.exe

                Filesize

                632KB

                MD5

                b60d8d01724703616e7cbbd320a9bd75

                SHA1

                16f170f595d6db225f1376315406bf10146d1743

                SHA256

                cc6d774ca5b7d8d89289ccace5a25c5c3db0b30c330c10f0233c1d0cb8c9e24c

                SHA512

                7560876438eb1401b542ff491e3d800b3ba06163ef62362f4e8a1e0bab26d809a24d045d396f2269648114c67ceb9dfec96f33f8b1491257b4240179345d0d00

              • C:\ProgramData\JKEGIDGDGH.exe

                Filesize

                1.8MB

                MD5

                c6c9f27d335d4e47b5ea12653e806be6

                SHA1

                e53242d463e2c94383ec646e7e04504b96b4d176

                SHA256

                514efbae5faa43878c743c3db36f81c25ab5d6da93b879b6e88e7a63b1b19769

                SHA512

                7e00bdac39c89821b776dda372693d29e0e7188f8ef747037b971461af79545908f8fc8c9bbf7a30f1b0cc4ceea45632e91c1093e784002994808c19bd2a7347

              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports

                Filesize

                2B

                MD5

                d751713988987e9331980363e24189ce

                SHA1

                97d170e1550eee4afc0af065b78cda302a97674c

                SHA256

                4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                SHA512

                b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries

                Filesize

                40B

                MD5

                20d4b8fa017a12a108c87f540836e250

                SHA1

                1ac617fac131262b6d3ce1f52f5907e31d5f6f00

                SHA256

                6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

                SHA512

                507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

              • memory/2696-0-0x0000000000850000-0x0000000000851000-memory.dmp

                Filesize

                4KB

              • memory/3332-73-0x00000000010A0000-0x00000000010A1000-memory.dmp

                Filesize

                4KB

              • memory/4224-92-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-6-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-25-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-41-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-42-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-9-0x0000000009C50000-0x0000000009EAF000-memory.dmp

                Filesize

                2.4MB

              • memory/4224-7-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-24-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-5-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-1-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-87-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4224-4-0x0000000000400000-0x0000000000648000-memory.dmp

                Filesize

                2.3MB

              • memory/4348-89-0x0000000000400000-0x0000000000596000-memory.dmp

                Filesize

                1.6MB

              • memory/4348-86-0x0000000000400000-0x0000000000596000-memory.dmp

                Filesize

                1.6MB

              • memory/4348-91-0x0000000000400000-0x0000000000596000-memory.dmp

                Filesize

                1.6MB

              • memory/4664-88-0x0000000005090000-0x0000000005122000-memory.dmp

                Filesize

                584KB

              • memory/4664-85-0x0000000005740000-0x0000000005CE4000-memory.dmp

                Filesize

                5.6MB

              • memory/4664-79-0x000000007227E000-0x000000007227F000-memory.dmp

                Filesize

                4KB

              • memory/4664-74-0x0000000000400000-0x000000000046C000-memory.dmp

                Filesize

                432KB

              • memory/4664-93-0x0000000005160000-0x000000000516A000-memory.dmp

                Filesize

                40KB

              • memory/4664-94-0x00000000087A0000-0x0000000008DB8000-memory.dmp

                Filesize

                6.1MB

              • memory/4664-95-0x0000000008300000-0x000000000840A000-memory.dmp

                Filesize

                1.0MB

              • memory/4664-96-0x0000000008010000-0x0000000008022000-memory.dmp

                Filesize

                72KB

              • memory/4664-97-0x0000000008240000-0x000000000827C000-memory.dmp

                Filesize

                240KB

              • memory/4664-98-0x0000000008280000-0x00000000082CC000-memory.dmp

                Filesize

                304KB

              • memory/4664-99-0x000000007227E000-0x000000007227F000-memory.dmp

                Filesize

                4KB

              • memory/4664-100-0x0000000008FC0000-0x0000000009026000-memory.dmp

                Filesize

                408KB

              • memory/4664-101-0x00000000092F0000-0x0000000009366000-memory.dmp

                Filesize

                472KB

              • memory/4664-102-0x00000000092D0000-0x00000000092EE000-memory.dmp

                Filesize

                120KB