Resubmissions

12-07-2021 16:55

210712-cvz622xsbj 10

10-07-2021 13:25

210710-pdfh7kft96 10

09-07-2021 23:00

210709-hewxkm1xlj 10

09-07-2021 16:08

210709-5ql27kyjqa 10

09-07-2021 14:08

210709-pt977a4bhe 10

08-07-2021 22:09

210708-3ypfnj5j7x 10

08-07-2021 13:30

210708-4hsk7y9f2x 10

08-07-2021 12:14

210708-8t5f9z9egj 10

Analysis

  • max time kernel
    1801s
  • max time network
    1719s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    12-07-2021 16:55

General

  • Target

    toolspab2 (1).exe

  • Size

    315KB

  • MD5

    585c257e0b345b762e7cdc407d8f9da2

  • SHA1

    ffee403d97b76c3460fc166b9d5ce1205cd216a5

  • SHA256

    4a0ecbcf9b54ed1c9654eb9ee214a797f48c980c6d03a261f62fa9671a2733d6

  • SHA512

    14d39a6cd1c6d912cae7c35e2a98affcd5a9c1df6b947c42de65344e08d34912b09ccac83f9d8c3213b4e3d555769801e8218cb3f4b970d1d08606ee5a454ba8

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://999080321newfolder1002002131-service1002.space/

http://999080321newfolder1002002231-service1002.space/

http://999080321newfolder3100231-service1002.space/

http://999080321newfolder1002002431-service1002.space/

http://999080321newfolder1002002531-service1002.space/

http://999080321newfolder33417-012425999080321.space/

http://999080321test125831-service10020125999080321.space/

http://999080321test136831-service10020125999080321.space/

http://999080321test147831-service10020125999080321.space/

http://999080321test146831-service10020125999080321.space/

http://999080321test134831-service10020125999080321.space/

http://999080321est213531-service1002012425999080321.ru/

http://999080321yes1t3481-service10020125999080321.ru/

http://999080321test13561-service10020125999080321.su/

http://999080321test14781-service10020125999080321.info/

http://999080321test13461-service10020125999080321.net/

http://999080321test15671-service10020125999080321.tech/

http://999080321test12671-service10020125999080321.online/

http://999080321utest1341-service10020125999080321.ru/

http://999080321uest71-service100201dom25999080321.ru/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

1

C2

45.32.235.238:45555

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

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

  • RedLine Payload 3 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 12 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.

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

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (1).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (1).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:708
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (1).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (1).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2880
  • C:\Users\Admin\AppData\Local\Temp\FA5E.exe
    C:\Users\Admin\AppData\Local\Temp\FA5E.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:3172
  • C:\Users\Admin\AppData\Local\Temp\FC44.exe
    C:\Users\Admin\AppData\Local\Temp\FC44.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1968
  • C:\Users\Admin\AppData\Local\Temp\FE68.exe
    C:\Users\Admin\AppData\Local\Temp\FE68.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1316
    • C:\Users\Admin\AppData\Local\Temp\FE68.exe
      C:\Users\Admin\AppData\Local\Temp\FE68.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3540
  • C:\Users\Admin\AppData\Local\Temp\30C.exe
    C:\Users\Admin\AppData\Local\Temp\30C.exe
    1⤵
    • Executes dropped EXE
    PID:2308
  • C:\Users\Admin\AppData\Local\Temp\6D6.exe
    C:\Users\Admin\AppData\Local\Temp\6D6.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\6D6.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:188
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:1952
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:416
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:1196
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:1120
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:1204
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:648
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:1808
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:1208
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:1672
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:3936
                    • C:\Users\Admin\AppData\Roaming\grwjjwv
                      C:\Users\Admin\AppData\Roaming\grwjjwv
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      PID:2572
                      • C:\Users\Admin\AppData\Roaming\grwjjwv
                        C:\Users\Admin\AppData\Roaming\grwjjwv
                        2⤵
                        • Executes dropped EXE
                        PID:2592
                    • C:\Users\Admin\AppData\Roaming\grwjjwv
                      C:\Users\Admin\AppData\Roaming\grwjjwv
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      PID:2216
                      • C:\Users\Admin\AppData\Roaming\grwjjwv
                        C:\Users\Admin\AppData\Roaming\grwjjwv
                        2⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:3052
                    • C:\Users\Admin\AppData\Roaming\grwjjwv
                      C:\Users\Admin\AppData\Roaming\grwjjwv
                      1⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      PID:2020
                      • C:\Users\Admin\AppData\Roaming\grwjjwv
                        C:\Users\Admin\AppData\Roaming\grwjjwv
                        2⤵
                        • Executes dropped EXE
                        PID:2264

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/416-148-0x00000000030A0000-0x0000000003114000-memory.dmp

                      Filesize

                      464KB

                    • memory/416-151-0x0000000003030000-0x000000000309B000-memory.dmp

                      Filesize

                      428KB

                    • memory/648-176-0x0000000003000000-0x0000000003005000-memory.dmp

                      Filesize

                      20KB

                    • memory/648-177-0x0000000002DF0000-0x0000000002DF9000-memory.dmp

                      Filesize

                      36KB

                    • memory/708-114-0x0000000000540000-0x000000000054C000-memory.dmp

                      Filesize

                      48KB

                    • memory/1120-164-0x0000000002900000-0x0000000002907000-memory.dmp

                      Filesize

                      28KB

                    • memory/1120-165-0x00000000028F0000-0x00000000028FB000-memory.dmp

                      Filesize

                      44KB

                    • memory/1196-158-0x0000000000BC0000-0x0000000000BCC000-memory.dmp

                      Filesize

                      48KB

                    • memory/1196-157-0x0000000000BD0000-0x0000000000BD7000-memory.dmp

                      Filesize

                      28KB

                    • memory/1204-174-0x0000000000910000-0x000000000091F000-memory.dmp

                      Filesize

                      60KB

                    • memory/1204-173-0x0000000000920000-0x0000000000929000-memory.dmp

                      Filesize

                      36KB

                    • memory/1208-185-0x0000000002870000-0x0000000002879000-memory.dmp

                      Filesize

                      36KB

                    • memory/1208-184-0x0000000002880000-0x0000000002884000-memory.dmp

                      Filesize

                      16KB

                    • memory/1316-132-0x0000000000480000-0x0000000000481000-memory.dmp

                      Filesize

                      4KB

                    • memory/1316-134-0x0000000004C80000-0x0000000004C81000-memory.dmp

                      Filesize

                      4KB

                    • memory/1316-135-0x0000000004C50000-0x0000000004C51000-memory.dmp

                      Filesize

                      4KB

                    • memory/1316-139-0x0000000004E70000-0x0000000004E71000-memory.dmp

                      Filesize

                      4KB

                    • memory/1672-187-0x00000000007D0000-0x00000000007D5000-memory.dmp

                      Filesize

                      20KB

                    • memory/1672-188-0x00000000007C0000-0x00000000007C9000-memory.dmp

                      Filesize

                      36KB

                    • memory/1808-181-0x0000000000750000-0x0000000000756000-memory.dmp

                      Filesize

                      24KB

                    • memory/1808-182-0x0000000000740000-0x000000000074C000-memory.dmp

                      Filesize

                      48KB

                    • memory/2020-216-0x0000000000460000-0x000000000050E000-memory.dmp

                      Filesize

                      696KB

                    • memory/2216-209-0x0000000000550000-0x000000000069A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/2308-155-0x0000000000400000-0x0000000002C3C000-memory.dmp

                      Filesize

                      40.2MB

                    • memory/2308-154-0x0000000002C40000-0x0000000002D8A000-memory.dmp

                      Filesize

                      1.3MB

                    • memory/2880-115-0x0000000000400000-0x000000000040C000-memory.dmp

                      Filesize

                      48KB

                    • memory/3032-118-0x0000000000E40000-0x0000000000E57000-memory.dmp

                      Filesize

                      92KB

                    • memory/3032-210-0x0000000002E10000-0x0000000002E27000-memory.dmp

                      Filesize

                      92KB

                    • memory/3536-143-0x0000000000FD0000-0x00000000013C4000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/3536-145-0x00000000776B0000-0x000000007783E000-memory.dmp

                      Filesize

                      1.6MB

                    • memory/3540-193-0x0000000007300000-0x0000000007301000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-194-0x0000000007830000-0x0000000007831000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-196-0x0000000007140000-0x0000000007141000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-159-0x0000000005680000-0x0000000005681000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-166-0x00000000055E0000-0x0000000005BE6000-memory.dmp

                      Filesize

                      6.0MB

                    • memory/3540-160-0x00000000056E0000-0x00000000056E1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-195-0x0000000006DD0000-0x0000000006DD1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-147-0x0000000000400000-0x000000000041E000-memory.dmp

                      Filesize

                      120KB

                    • memory/3540-192-0x0000000006C00000-0x0000000006C01000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-170-0x0000000005990000-0x0000000005991000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-156-0x0000000005BF0000-0x0000000005BF1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3540-163-0x0000000005770000-0x0000000005771000-memory.dmp

                      Filesize

                      4KB

                    • memory/3936-190-0x0000000002E20000-0x0000000002E25000-memory.dmp

                      Filesize

                      20KB

                    • memory/3936-191-0x0000000002E10000-0x0000000002E19000-memory.dmp

                      Filesize

                      36KB