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Analysis

  • max time kernel
    1723s
  • max time network
    1729s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27/08/2021, 15:40

General

  • Target

    Setup (13).exe

  • Size

    631KB

  • MD5

    cb927513ff8ebff4dd52a47f7e42f934

  • SHA1

    0de47c02a8adc4940a6c18621b4e4a619641d029

  • SHA256

    fd5c970806fba1500cbb6af5328329aeb43b8de3f02d90ec5d8cd1d57711622f

  • SHA512

    988c8fd886a9155b7d190faf2ce6b34d910efcffcf1c6251f18a9d0c804a0ea26a89679273033ac98b200363c536426efd1ae9de445c34e660369abb06f0071c

Malware Config

Extracted

Family

redline

Botnet

2608

C2

tambisup.com:9825

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • RedLine

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

  • RedLine Payload 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 24 IoCs
  • Checks BIOS information in registry 2 TTPs 4 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.

  • Loads dropped DLL 48 IoCs
  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 9 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup (13).exe
    "C:\Users\Admin\AppData\Local\Temp\Setup (13).exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Users\Admin\Documents\EBoQIh9tsKfZdTWekqiYbE_k.exe
      "C:\Users\Admin\Documents\EBoQIh9tsKfZdTWekqiYbE_k.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      PID:920
      • C:\Users\Admin\Documents\EBoQIh9tsKfZdTWekqiYbE_k.exe
        "C:\Users\Admin\Documents\EBoQIh9tsKfZdTWekqiYbE_k.exe"
        3⤵
          PID:2924
      • C:\Users\Admin\Documents\p9oGVvqRNrvexsp1le5yuasd.exe
        "C:\Users\Admin\Documents\p9oGVvqRNrvexsp1le5yuasd.exe"
        2⤵
        • Executes dropped EXE
        PID:960
      • C:\Users\Admin\Documents\uawNBV94bVmu_ktkwIrhgAZa.exe
        "C:\Users\Admin\Documents\uawNBV94bVmu_ktkwIrhgAZa.exe"
        2⤵
        • Executes dropped EXE
        PID:1576
      • C:\Users\Admin\Documents\6hYu9BWV5HmBFmbOzivHekhR.exe
        "C:\Users\Admin\Documents\6hYu9BWV5HmBFmbOzivHekhR.exe"
        2⤵
        • Executes dropped EXE
        PID:1752
      • C:\Users\Admin\Documents\EtvjMm4A0iYzMcDwqGKBvXIG.exe
        "C:\Users\Admin\Documents\EtvjMm4A0iYzMcDwqGKBvXIG.exe"
        2⤵
        • Executes dropped EXE
        PID:1536
      • C:\Users\Admin\Documents\WmHmrHIej6LaEDab77WRxDp3.exe
        "C:\Users\Admin\Documents\WmHmrHIej6LaEDab77WRxDp3.exe"
        2⤵
        • Executes dropped EXE
        PID:944
      • C:\Users\Admin\Documents\fTJW56UamXJUiLTSeG_TfKnQ.exe
        "C:\Users\Admin\Documents\fTJW56UamXJUiLTSeG_TfKnQ.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1992
      • C:\Users\Admin\Documents\7QVmb7eIJ1uPEg5cu0OZZbuS.exe
        "C:\Users\Admin\Documents\7QVmb7eIJ1uPEg5cu0OZZbuS.exe"
        2⤵
        • Executes dropped EXE
        PID:1816
      • C:\Users\Admin\Documents\e5cZ_4WcieXv0dSjoQHaYZVn.exe
        "C:\Users\Admin\Documents\e5cZ_4WcieXv0dSjoQHaYZVn.exe"
        2⤵
        • Executes dropped EXE
        PID:780
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 780 -s 860
          3⤵
          • Loads dropped DLL
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:2004
      • C:\Users\Admin\Documents\LfhrjWG5r7jRxj_emXgnxyIq.exe
        "C:\Users\Admin\Documents\LfhrjWG5r7jRxj_emXgnxyIq.exe"
        2⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        PID:1828
      • C:\Users\Admin\Documents\XEqi5uPNoxrUjg9UFdMVjwPe.exe
        "C:\Users\Admin\Documents\XEqi5uPNoxrUjg9UFdMVjwPe.exe"
        2⤵
        • Executes dropped EXE
        PID:2016
      • C:\Users\Admin\Documents\UdXM_levZRzIsFVJbtn90PQZ.exe
        "C:\Users\Admin\Documents\UdXM_levZRzIsFVJbtn90PQZ.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1756
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Ou3tPfureT.exe
          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Ou3tPfureT.exe"
          3⤵
          • Executes dropped EXE
          PID:1888
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
            4⤵
              PID:1352
        • C:\Users\Admin\Documents\fJbGz06epsvFrY6utW2INuGH.exe
          "C:\Users\Admin\Documents\fJbGz06epsvFrY6utW2INuGH.exe"
          2⤵
          • Executes dropped EXE
          PID:2168
        • C:\Users\Admin\Documents\SXL7tMDhREQpaqwXUn7iWW4N.exe
          "C:\Users\Admin\Documents\SXL7tMDhREQpaqwXUn7iWW4N.exe"
          2⤵
          • Executes dropped EXE
          PID:2152
        • C:\Users\Admin\Documents\J0s8T9DGjm6zwhTRh48pmTmD.exe
          "C:\Users\Admin\Documents\J0s8T9DGjm6zwhTRh48pmTmD.exe"
          2⤵
          • Executes dropped EXE
          • Checks BIOS information in registry
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          PID:2136
        • C:\Users\Admin\Documents\DdzmFizdQdNecjC9znBLS2Qf.exe
          "C:\Users\Admin\Documents\DdzmFizdQdNecjC9znBLS2Qf.exe"
          2⤵
          • Executes dropped EXE
          PID:2120
        • C:\Users\Admin\Documents\J6_LE2p1Sl757UjnoJH4CCrk.exe
          "C:\Users\Admin\Documents\J6_LE2p1Sl757UjnoJH4CCrk.exe"
          2⤵
            PID:2100
          • C:\Users\Admin\Documents\4FE0BO9BKrYGTNJ8w0GgTHzg.exe
            "C:\Users\Admin\Documents\4FE0BO9BKrYGTNJ8w0GgTHzg.exe"
            2⤵
            • Executes dropped EXE
            PID:2080
          • C:\Users\Admin\Documents\nvMp58uxCROSmXhH0fMoWZm4.exe
            "C:\Users\Admin\Documents\nvMp58uxCROSmXhH0fMoWZm4.exe"
            2⤵
            • Executes dropped EXE
            PID:2056
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c taskkill /im "nvMp58uxCROSmXhH0fMoWZm4.exe" /f & erase "C:\Users\Admin\Documents\nvMp58uxCROSmXhH0fMoWZm4.exe" & exit
              3⤵
                PID:3056
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im "nvMp58uxCROSmXhH0fMoWZm4.exe" /f
                  4⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1200
            • C:\Users\Admin\Documents\5RHC22ejj7MHADMdDVSAB9r0.exe
              "C:\Users\Admin\Documents\5RHC22ejj7MHADMdDVSAB9r0.exe"
              2⤵
              • Executes dropped EXE
              PID:340
            • C:\Users\Admin\Documents\cql1NVWYoRTjPT1tvL0AaIPL.exe
              "C:\Users\Admin\Documents\cql1NVWYoRTjPT1tvL0AaIPL.exe"
              2⤵
              • Executes dropped EXE
              PID:1872
            • C:\Users\Admin\Documents\H7mL5Xmj9Ft6SBwUUKW3CC15.exe
              "C:\Users\Admin\Documents\H7mL5Xmj9Ft6SBwUUKW3CC15.exe"
              2⤵
                PID:1060
              • C:\Users\Admin\Documents\xKYKaF0f5SDHxeqMbAOuh_OT.exe
                "C:\Users\Admin\Documents\xKYKaF0f5SDHxeqMbAOuh_OT.exe"
                2⤵
                • Executes dropped EXE
                • Modifies system certificate store
                PID:948
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 948 -s 868
                  3⤵
                  • Loads dropped DLL
                  • Program crash
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: GetForegroundWindowSpam
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2364
              • C:\Users\Admin\Documents\Ha7oYNI0TbxnovHvGBty5wgz.exe
                "C:\Users\Admin\Documents\Ha7oYNI0TbxnovHvGBty5wgz.exe"
                2⤵
                • Executes dropped EXE
                PID:952
              • C:\Users\Admin\Documents\bExKX8SRRqvjN5S8CSV4F27S.exe
                "C:\Users\Admin\Documents\bExKX8SRRqvjN5S8CSV4F27S.exe"
                2⤵
                  PID:1316
                • C:\Users\Admin\Documents\qnX4j7Hdsn7bEWQp6YhFdObl.exe
                  "C:\Users\Admin\Documents\qnX4j7Hdsn7bEWQp6YhFdObl.exe"
                  2⤵
                    PID:1400
                  • C:\Users\Admin\Documents\rlFudyh1nMKTgfko4bozC6ZL.exe
                    "C:\Users\Admin\Documents\rlFudyh1nMKTgfko4bozC6ZL.exe"
                    2⤵
                    • Executes dropped EXE
                    PID:112
                • C:\Windows\system32\rundll32.exe
                  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sqlite.dll",global
                  1⤵
                  • Process spawned unexpected child process
                  PID:2936
                  • C:\Windows\SysWOW64\rundll32.exe
                    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sqlite.dll",global
                    2⤵
                      PID:2952

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • memory/340-194-0x00000000004A0000-0x00000000004B6000-memory.dmp

                    Filesize

                    88KB

                  • memory/340-160-0x00000000010A0000-0x00000000010A1000-memory.dmp

                    Filesize

                    4KB

                  • memory/944-164-0x0000000000970000-0x0000000000971000-memory.dmp

                    Filesize

                    4KB

                  • memory/1288-60-0x00000000750C1000-0x00000000750C3000-memory.dmp

                    Filesize

                    8KB

                  • memory/1288-61-0x0000000003E90000-0x0000000003FCF000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1352-193-0x0000000000400000-0x0000000000420000-memory.dmp

                    Filesize

                    128KB

                  • memory/1536-161-0x0000000000A30000-0x0000000000A31000-memory.dmp

                    Filesize

                    4KB

                  • memory/1576-163-0x0000000000A50000-0x0000000000A51000-memory.dmp

                    Filesize

                    4KB

                  • memory/1576-187-0x00000000005F0000-0x000000000060E000-memory.dmp

                    Filesize

                    120KB

                  • memory/1816-165-0x0000000000380000-0x0000000000381000-memory.dmp

                    Filesize

                    4KB

                  • memory/1828-180-0x0000000000D10000-0x0000000000D11000-memory.dmp

                    Filesize

                    4KB

                  • memory/1872-166-0x00000000013D0000-0x00000000013D1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1992-159-0x000000001AFF0000-0x000000001AFF2000-memory.dmp

                    Filesize

                    8KB

                  • memory/1992-152-0x00000000012B0000-0x00000000012B1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1992-174-0x00000000001D0000-0x00000000001E9000-memory.dmp

                    Filesize

                    100KB

                  • memory/2016-154-0x000007FEFB701000-0x000007FEFB703000-memory.dmp

                    Filesize

                    8KB

                  • memory/2080-177-0x0000000002E10000-0x0000000002E2C000-memory.dmp

                    Filesize

                    112KB

                  • memory/2136-179-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

                    Filesize

                    4KB

                  • memory/2924-182-0x0000000000400000-0x0000000000409000-memory.dmp

                    Filesize

                    36KB