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
    1802s
  • max time network
    1742s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    12-07-2021 16:55

General

  • Target

    toolspab2 (13).exe

  • Size

    315KB

  • MD5

    1d20e1f65938e837ef1b88f10f1bd6c3

  • SHA1

    703d7098dbfc476d2181b7fc041cc23e49c368f1

  • SHA256

    05cd7440851f13dd8f489bb3c06eba385d85d7d9a77a612049c04c541a88593d

  • SHA512

    f9d333abe1f721b8d45d7bc6b5f286af09a8d233bd1d41f0ad891840cf742364aeca2cb6ccd6543f56a8eaf32804f82f72f961d16d5ba663ad706d164915a196

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 2 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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
  • Drops file in Windows directory 1 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
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\toolspab2 (13).exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab2 (13).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Users\Admin\AppData\Local\Temp\toolspab2 (13).exe
      "C:\Users\Admin\AppData\Local\Temp\toolspab2 (13).exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1328
  • C:\Users\Admin\AppData\Local\Temp\BFCB.exe
    C:\Users\Admin\AppData\Local\Temp\BFCB.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:2712
  • C:\Users\Admin\AppData\Local\Temp\C143.exe
    C:\Users\Admin\AppData\Local\Temp\C143.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1020
  • C:\Users\Admin\AppData\Local\Temp\C403.exe
    C:\Users\Admin\AppData\Local\Temp\C403.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3476
    • C:\Users\Admin\AppData\Local\Temp\C403.exe
      C:\Users\Admin\AppData\Local\Temp\C403.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of AdjustPrivilegeToken
      PID:1936
  • C:\Users\Admin\AppData\Local\Temp\C7EC.exe
    C:\Users\Admin\AppData\Local\Temp\C7EC.exe
    1⤵
    • Executes dropped EXE
    PID:1556
  • C:\Users\Admin\AppData\Local\Temp\CBF5.exe
    C:\Users\Admin\AppData\Local\Temp\CBF5.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:748
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\CBF5.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:860
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:3784
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:2352
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:3860
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
          • Suspicious behavior: MapViewOfSection
          PID:900
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          1⤵
            PID:3764
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
            • Suspicious behavior: MapViewOfSection
            PID:3348
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:2208
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
              • Suspicious behavior: MapViewOfSection
              PID:360
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:1236
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
                1⤵
                • Drops file in Windows directory
                • Modifies Internet Explorer settings
                • Modifies registry class
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:1520
              • C:\Windows\system32\browser_broker.exe
                C:\Windows\system32\browser_broker.exe -Embedding
                1⤵
                • Modifies Internet Explorer settings
                PID:3344
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                1⤵
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of SetWindowsHookEx
                PID:744
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                1⤵
                • Modifies Internet Explorer settings
                • Modifies registry class
                • Suspicious use of AdjustPrivilegeToken
                PID:2260
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                1⤵
                • Modifies registry class
                • Suspicious use of AdjustPrivilegeToken
                PID:4504
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                1⤵
                • Modifies registry class
                PID:4628
              • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                1⤵
                • Modifies registry class
                PID:4712
              • C:\Users\Admin\AppData\Roaming\uahatfe
                C:\Users\Admin\AppData\Roaming\uahatfe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:804
                • C:\Users\Admin\AppData\Roaming\uahatfe
                  C:\Users\Admin\AppData\Roaming\uahatfe
                  2⤵
                  • Executes dropped EXE
                  PID:636
              • C:\Users\Admin\AppData\Roaming\uahatfe
                C:\Users\Admin\AppData\Roaming\uahatfe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:4248
                • C:\Users\Admin\AppData\Roaming\uahatfe
                  C:\Users\Admin\AppData\Roaming\uahatfe
                  2⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Checks SCSI registry key(s)
                  • Suspicious behavior: MapViewOfSection
                  PID:4336
              • C:\Users\Admin\AppData\Roaming\uahatfe
                C:\Users\Admin\AppData\Roaming\uahatfe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:4600
                • C:\Users\Admin\AppData\Roaming\uahatfe
                  C:\Users\Admin\AppData\Roaming\uahatfe
                  2⤵
                  • Executes dropped EXE
                  PID:3128

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • memory/360-188-0x0000000000B80000-0x0000000000B85000-memory.dmp

                Filesize

                20KB

              • memory/360-189-0x0000000000B70000-0x0000000000B79000-memory.dmp

                Filesize

                36KB

              • memory/744-201-0x000001D910A40000-0x000001D910A41000-memory.dmp

                Filesize

                4KB

              • memory/744-199-0x000001D910A10000-0x000001D910A11000-memory.dmp

                Filesize

                4KB

              • memory/744-198-0x000001D9107D0000-0x000001D9107D1000-memory.dmp

                Filesize

                4KB

              • memory/748-143-0x0000000000880000-0x0000000000C74000-memory.dmp

                Filesize

                4.0MB

              • memory/748-145-0x0000000077C50000-0x0000000077DDE000-memory.dmp

                Filesize

                1.6MB

              • memory/900-175-0x0000000001220000-0x000000000122F000-memory.dmp

                Filesize

                60KB

              • memory/900-174-0x0000000001230000-0x0000000001239000-memory.dmp

                Filesize

                36KB

              • memory/1236-191-0x0000000000B10000-0x0000000000B15000-memory.dmp

                Filesize

                20KB

              • memory/1236-192-0x0000000000B00000-0x0000000000B09000-memory.dmp

                Filesize

                36KB

              • memory/1328-114-0x0000000000400000-0x000000000040C000-memory.dmp

                Filesize

                48KB

              • memory/1556-146-0x0000000002C40000-0x0000000002D8A000-memory.dmp

                Filesize

                1.3MB

              • memory/1556-149-0x0000000000400000-0x0000000002C3C000-memory.dmp

                Filesize

                40.2MB

              • memory/1936-196-0x0000000006810000-0x0000000006811000-memory.dmp

                Filesize

                4KB

              • memory/1936-195-0x0000000006600000-0x0000000006601000-memory.dmp

                Filesize

                4KB

              • memory/1936-164-0x0000000004F50000-0x0000000004F51000-memory.dmp

                Filesize

                4KB

              • memory/1936-169-0x0000000004E10000-0x0000000005416000-memory.dmp

                Filesize

                6.0MB

              • memory/1936-150-0x0000000000400000-0x000000000041E000-memory.dmp

                Filesize

                120KB

              • memory/1936-197-0x0000000007560000-0x0000000007561000-memory.dmp

                Filesize

                4KB

              • memory/1936-160-0x0000000004F10000-0x0000000004F11000-memory.dmp

                Filesize

                4KB

              • memory/1936-173-0x00000000051C0000-0x00000000051C1000-memory.dmp

                Filesize

                4KB

              • memory/1936-194-0x0000000006B30000-0x0000000006B31000-memory.dmp

                Filesize

                4KB

              • memory/1936-193-0x0000000006430000-0x0000000006431000-memory.dmp

                Filesize

                4KB

              • memory/1936-158-0x0000000005420000-0x0000000005421000-memory.dmp

                Filesize

                4KB

              • memory/1936-159-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

                Filesize

                4KB

              • memory/2208-185-0x00000000032F0000-0x00000000032F4000-memory.dmp

                Filesize

                16KB

              • memory/2208-186-0x00000000032E0000-0x00000000032E9000-memory.dmp

                Filesize

                36KB

              • memory/2260-202-0x00000171AD730000-0x00000171AD731000-memory.dmp

                Filesize

                4KB

              • memory/2260-203-0x00000171AD790000-0x00000171AD791000-memory.dmp

                Filesize

                4KB

              • memory/2260-207-0x00000171ADAC0000-0x00000171ADAC1000-memory.dmp

                Filesize

                4KB

              • memory/2260-204-0x00000171AD790000-0x00000171AD791000-memory.dmp

                Filesize

                4KB

              • memory/2260-206-0x00000171ADAE0000-0x00000171ADAE1000-memory.dmp

                Filesize

                4KB

              • memory/2260-205-0x00000171ADA90000-0x00000171ADA91000-memory.dmp

                Filesize

                4KB

              • memory/2352-161-0x0000000000AC0000-0x0000000000AC7000-memory.dmp

                Filesize

                28KB

              • memory/2352-162-0x0000000000AB0000-0x0000000000ABC000-memory.dmp

                Filesize

                48KB

              • memory/3016-229-0x0000000000B50000-0x0000000000B67000-memory.dmp

                Filesize

                92KB

              • memory/3016-118-0x0000000000AF0000-0x0000000000B07000-memory.dmp

                Filesize

                92KB

              • memory/3348-183-0x00000000012E0000-0x00000000012EC000-memory.dmp

                Filesize

                48KB

              • memory/3348-182-0x00000000012F0000-0x00000000012F6000-memory.dmp

                Filesize

                24KB

              • memory/3476-134-0x0000000004970000-0x0000000004971000-memory.dmp

                Filesize

                4KB

              • memory/3476-132-0x0000000000130000-0x0000000000131000-memory.dmp

                Filesize

                4KB

              • memory/3476-135-0x0000000004910000-0x0000000004911000-memory.dmp

                Filesize

                4KB

              • memory/3476-139-0x0000000004B60000-0x0000000004B61000-memory.dmp

                Filesize

                4KB

              • memory/3764-179-0x00000000032E0000-0x00000000032E9000-memory.dmp

                Filesize

                36KB

              • memory/3764-178-0x00000000032F0000-0x00000000032F5000-memory.dmp

                Filesize

                20KB

              • memory/3784-147-0x0000000000AA0000-0x0000000000B14000-memory.dmp

                Filesize

                464KB

              • memory/3784-148-0x0000000000A30000-0x0000000000A9B000-memory.dmp

                Filesize

                428KB

              • memory/3860-171-0x0000000000B70000-0x0000000000B7B000-memory.dmp

                Filesize

                44KB

              • memory/3860-170-0x0000000000B80000-0x0000000000B87000-memory.dmp

                Filesize

                28KB

              • memory/3948-117-0x00000000001E0000-0x00000000001EC000-memory.dmp

                Filesize

                48KB

              • memory/4248-228-0x0000000000460000-0x00000000005AA000-memory.dmp

                Filesize

                1.3MB

              • memory/4504-209-0x0000015056AE0000-0x0000015056AE1000-memory.dmp

                Filesize

                4KB

              • memory/4504-208-0x0000015056AD0000-0x0000015056AD1000-memory.dmp

                Filesize

                4KB

              • memory/4504-210-0x0000015056AF0000-0x0000015056AF1000-memory.dmp

                Filesize

                4KB

              • memory/4628-213-0x000001B3A80F0000-0x000001B3A80F1000-memory.dmp

                Filesize

                4KB

              • memory/4628-211-0x000001B3A80E0000-0x000001B3A80E1000-memory.dmp

                Filesize

                4KB

              • memory/4628-214-0x000001B3A8C10000-0x000001B3A8C11000-memory.dmp

                Filesize

                4KB

              • memory/4712-212-0x000001C4B2590000-0x000001C4B2591000-memory.dmp

                Filesize

                4KB

              • memory/4712-216-0x000001C4B25D0000-0x000001C4B25D1000-memory.dmp

                Filesize

                4KB

              • memory/4712-215-0x000001C4B25B0000-0x000001C4B25B1000-memory.dmp

                Filesize

                4KB