Analysis

  • max time kernel
    150s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    01/08/2021, 07:04

General

  • Target
    9e5fea777637a2a611c00c482da0ed6a.exe
  • Size 340KB
  • Sample210801-e8slvck4e2
  • SHA256 028fe7d08ab916d5239ccd8bcfdcd885ddffdf3821abc01958490daeba45dbec
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://readinglistforjuly1.xyz/

  • http://readinglistforjuly2.xyz/

  • http://readinglistforjuly3.xyz/

  • http://readinglistforjuly4.xyz/

  • http://readinglistforjuly5.xyz/

  • http://readinglistforjuly6.xyz/

  • http://readinglistforjuly7.xyz/

  • http://readinglistforjuly8.xyz/

  • http://readinglistforjuly9.xyz/

  • http://readinglistforjuly10.xyz/

  • http://readinglistforjuly1.site/

  • http://readinglistforjuly2.site/

  • http://readinglistforjuly3.site/

  • http://readinglistforjuly4.site/

  • http://readinglistforjuly5.site/

  • http://readinglistforjuly6.site/

  • http://readinglistforjuly7.site/

  • http://readinglistforjuly8.site/

  • http://readinglistforjuly9.site/

  • http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Extracted

Family
  • vidar

Version
  • 39.8

Botnet
  • 828

C2
  • https://xeronxikxxx.tumblr.com/

Attributes
  • profile_id

    828

Extracted

Family
  • raccoon

Botnet
  • cd8dc1031358b1aec55cc6bc447df1018b068607

Attributes
  • url4cnc

    https://telete.in/jagressor_kz

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon Stealer Payload 5 IoCs
  • RedLine

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

  • RedLine Payload 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 7 IoCs
  • 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.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 2 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe
    "C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe
      "C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2656
  • C:\Users\Admin\AppData\Local\Temp\6A49.exe
    C:\Users\Admin\AppData\Local\Temp\6A49.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:2120
  • C:\Users\Admin\AppData\Local\Temp\6B63.exe
    C:\Users\Admin\AppData\Local\Temp\6B63.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 6B63.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\6B63.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3920
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 6B63.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4136
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:4184
  • C:\Users\Admin\AppData\Local\Temp\6F1D.exe
    C:\Users\Admin\AppData\Local\Temp\6F1D.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3120
  • C:\Users\Admin\AppData\Local\Temp\72C7.exe
    C:\Users\Admin\AppData\Local\Temp\72C7.exe
    1⤵
    • Executes dropped EXE
    PID:2648
  • C:\Users\Admin\AppData\Local\Temp\797F.exe
    C:\Users\Admin\AppData\Local\Temp\797F.exe
    1⤵
    • Executes dropped EXE
    PID:2292
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:2156
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:760
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:2108
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:3556
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:2332
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:3108
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:2168
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:3568
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:2188
                    • C:\Users\Admin\AppData\Roaming\gjshuvi
                      C:\Users\Admin\AppData\Roaming\gjshuvi
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious use of WriteProcessMemory
                      PID:4348
                      • C:\Users\Admin\AppData\Roaming\gjshuvi
                        C:\Users\Admin\AppData\Roaming\gjshuvi
                        2⤵
                        • Executes dropped EXE
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:4380

                    Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          memory/760-151-0x00000000005B0000-0x00000000005B7000-memory.dmp

                          memory/760-152-0x00000000005A0000-0x00000000005AC000-memory.dmp

                          memory/1172-143-0x0000000000400000-0x000000000146C000-memory.dmp

                          memory/1172-142-0x0000000003160000-0x00000000031FD000-memory.dmp

                          memory/1392-205-0x0000000000B90000-0x0000000000BA6000-memory.dmp

                          memory/1392-117-0x0000000000B30000-0x0000000000B46000-memory.dmp

                          memory/2108-156-0x00000000003C0000-0x00000000003CB000-memory.dmp

                          memory/2108-155-0x00000000003D0000-0x00000000003D7000-memory.dmp

                          memory/2120-134-0x0000000005E50000-0x0000000005E51000-memory.dmp

                          memory/2120-171-0x0000000007080000-0x0000000007081000-memory.dmp

                          memory/2120-179-0x0000000007800000-0x0000000007801000-memory.dmp

                          memory/2120-176-0x0000000007620000-0x0000000007621000-memory.dmp

                          memory/2120-175-0x0000000007500000-0x0000000007501000-memory.dmp

                          memory/2120-138-0x0000000006030000-0x0000000006031000-memory.dmp

                          memory/2120-172-0x0000000008260000-0x0000000008261000-memory.dmp

                          memory/2120-123-0x00000000772A0000-0x000000007742E000-memory.dmp

                          memory/2120-137-0x0000000005D80000-0x0000000005D81000-memory.dmp

                          memory/2120-136-0x0000000005E90000-0x0000000005E91000-memory.dmp

                          memory/2120-128-0x0000000000A90000-0x0000000000A91000-memory.dmp

                          memory/2120-131-0x0000000005DF0000-0x0000000005DF1000-memory.dmp

                          memory/2120-168-0x0000000007830000-0x0000000007831000-memory.dmp

                          memory/2120-130-0x00000000063A0000-0x00000000063A1000-memory.dmp

                          memory/2120-167-0x0000000007130000-0x0000000007131000-memory.dmp

                          memory/2156-146-0x0000000001070000-0x00000000010E4000-memory.dmp

                          memory/2156-148-0x0000000001000000-0x000000000106B000-memory.dmp

                          memory/2168-177-0x0000000000A50000-0x0000000000A54000-memory.dmp

                          memory/2168-178-0x0000000000A40000-0x0000000000A49000-memory.dmp

                          memory/2188-190-0x00000000010A0000-0x00000000010A5000-memory.dmp

                          memory/2188-191-0x0000000001090000-0x0000000001099000-memory.dmp

                          memory/2292-157-0x0000000000400000-0x0000000001457000-memory.dmp

                          memory/2292-154-0x0000000001530000-0x000000000167A000-memory.dmp

                          memory/2332-163-0x00000000005C0000-0x00000000005C9000-memory.dmp

                          memory/2332-162-0x00000000005D0000-0x00000000005D5000-memory.dmp

                          memory/2648-150-0x0000000000400000-0x0000000001457000-memory.dmp

                          memory/2656-114-0x0000000000400000-0x0000000000409000-memory.dmp

                          memory/3108-170-0x0000000001020000-0x000000000102C000-memory.dmp

                          memory/3108-169-0x0000000001030000-0x0000000001036000-memory.dmp

                          memory/3120-145-0x0000000002F90000-0x0000000003021000-memory.dmp

                          memory/3120-147-0x0000000000400000-0x0000000001457000-memory.dmp

                          memory/3556-160-0x0000000000530000-0x0000000000539000-memory.dmp

                          memory/3556-161-0x0000000000520000-0x000000000052F000-memory.dmp

                          memory/3568-182-0x0000000000D20000-0x0000000000D29000-memory.dmp

                          memory/3568-181-0x0000000000D30000-0x0000000000D35000-memory.dmp

                          memory/4004-116-0x0000000003430000-0x000000000343A000-memory.dmp

                          memory/4348-204-0x0000000003250000-0x00000000032FE000-memory.dmp