Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 13:49

General

  • Target

    838f09135a6741e7dec0e91b348ce34406d0b632897f1caba00fb7eee13d09f7.exe

  • Size

    614KB

  • MD5

    d3e489837c6dc761b9a1d355d0aea80c

  • SHA1

    0f089235f5d4577bc5df82f44067172149786dbf

  • SHA256

    838f09135a6741e7dec0e91b348ce34406d0b632897f1caba00fb7eee13d09f7

  • SHA512

    8444e82b0a6fa0fddf9443c6e82a7c68b96fbfdd03907f427d2243c71af0909a83ec65788e51efe860de47c98f97e267eefebdd196865fc69303fd7e95ab3311

  • SSDEEP

    12288:aK2mhAMJ/cPld+1Ys7XVEIoXYbAgtDvfPPiyVDQBmQ48GraUCXGM00pT9t2pR:r2O/Gld+1Ysrco0iHhhQBmF8UaUCj0TH

Malware Config

Extracted

Family

xtremerat

C2

alertsdanish.bounceme.net

čalertsdanish.bounceme.net

Signatures

  • Detect XtremeRAT payload 11 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Executes dropped EXE 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\838f09135a6741e7dec0e91b348ce34406d0b632897f1caba00fb7eee13d09f7.exe
    "C:\Users\Admin\AppData\Local\Temp\838f09135a6741e7dec0e91b348ce34406d0b632897f1caba00fb7eee13d09f7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\fumic.exe
      "C:\Users\Admin\AppData\Local\Temp\fumic.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Users\Admin\AppData\Local\Temp\fumic.EXE
        "C:\Users\Admin\AppData\Local\Temp\fumic.EXE"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Drops file in Windows directory
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:64
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          4⤵
            PID:1488
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 516
              5⤵
              • Program crash
              PID:4584
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 524
              5⤵
              • Program crash
              PID:4728
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious use of SetWindowsHookEx
            PID:1416
          • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
            "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Windows\210Moto-Azabu Hills Apt 2204 Rosbacher.pdf"
            4⤵
            • Checks processor information in registry
            • Modifies Internet Explorer settings
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4888
            • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
              "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:3700
              • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=FE66B16FA859A9AC5816C146DEC7D4A7 --mojo-platform-channel-handle=1772 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                6⤵
                  PID:904
                • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=300491287C4DF76C5F0866586A6289F3 --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=1 --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=300491287C4DF76C5F0866586A6289F3 --renderer-client-id=2 --mojo-platform-channel-handle=1784 --allow-no-sandbox-job /prefetch:1
                  6⤵
                    PID:716
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=D431C991C7035AAB6B00293AAAAC703F --mojo-platform-channel-handle=1840 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    6⤵
                      PID:2868
                    • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                      "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=3026D0E884E3A1759D79091373A9E410 --mojo-platform-channel-handle=2344 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                      6⤵
                        PID:1640
                      • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                        "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=2B3BD8FD34A34478DEEA16D2EF31A9B3 --mojo-platform-channel-handle=1760 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                        6⤵
                          PID:1100
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1488 -ip 1488
                1⤵
                  PID:4092
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 1488 -ip 1488
                  1⤵
                    PID:3720
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:1148

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    • C:\Users\Admin\AppData\Local\Temp\Fumic.exe

                      Filesize

                      519KB

                      MD5

                      b1415073293fa408b8c1a31bdc34fcc4

                      SHA1

                      37642c6145a1f451c88b710b8573bca7afa7ba81

                      SHA256

                      39ecc03892d92ca63c0393580cee198b7cdd3b6ce2be337aed947802c882753b

                      SHA512

                      b48214ddc7006268a2c2f273602b70e45aca4e909025e44b41b890455e527f94bbf36796fac7e0b1af656cefdfab5d79dff85d31b14f310990bba0c72fddb25b

                    • C:\Users\Admin\AppData\Local\Temp\Fumic.exe

                      Filesize

                      519KB

                      MD5

                      b1415073293fa408b8c1a31bdc34fcc4

                      SHA1

                      37642c6145a1f451c88b710b8573bca7afa7ba81

                      SHA256

                      39ecc03892d92ca63c0393580cee198b7cdd3b6ce2be337aed947802c882753b

                      SHA512

                      b48214ddc7006268a2c2f273602b70e45aca4e909025e44b41b890455e527f94bbf36796fac7e0b1af656cefdfab5d79dff85d31b14f310990bba0c72fddb25b

                    • C:\Users\Admin\AppData\Local\Temp\fumic.exe

                      Filesize

                      519KB

                      MD5

                      b1415073293fa408b8c1a31bdc34fcc4

                      SHA1

                      37642c6145a1f451c88b710b8573bca7afa7ba81

                      SHA256

                      39ecc03892d92ca63c0393580cee198b7cdd3b6ce2be337aed947802c882753b

                      SHA512

                      b48214ddc7006268a2c2f273602b70e45aca4e909025e44b41b890455e527f94bbf36796fac7e0b1af656cefdfab5d79dff85d31b14f310990bba0c72fddb25b

                    • C:\Windows\210Moto-Azabu Hills Apt 2204 Rosbacher.pdf

                      Filesize

                      308KB

                      MD5

                      23bbd7c3a81207672ed44de64c7a3289

                      SHA1

                      a190365064ad07ca95fcbe03c175b1ad575e1aa2

                      SHA256

                      d23e94dfa47e49e83e3fbd60817e2cd20701ec1d06a4310845edfdb5f784b34d

                      SHA512

                      4e1c7c423c6385376ab1bad1f660a8bb9bb9af0d94befcf65ceee7057dcc4991beb5abc4e4a5339c7c3b65a4ff60627b0381cc75cb1f1e9ae4c85ab93df397e4

                    • memory/64-146-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/64-137-0x0000000000000000-mapping.dmp

                    • memory/64-140-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/64-141-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/64-138-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/64-149-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/716-156-0x0000000000000000-mapping.dmp

                    • memory/904-153-0x0000000000000000-mapping.dmp

                    • memory/1100-167-0x0000000000000000-mapping.dmp

                    • memory/1192-132-0x0000000000000000-mapping.dmp

                    • memory/1416-144-0x0000000000000000-mapping.dmp

                    • memory/1416-169-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/1416-148-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/1488-143-0x0000000000000000-mapping.dmp

                    • memory/1488-147-0x0000000010000000-0x0000000010097000-memory.dmp

                      Filesize

                      604KB

                    • memory/1640-164-0x0000000000000000-mapping.dmp

                    • memory/2868-161-0x0000000000000000-mapping.dmp

                    • memory/3700-151-0x0000000000000000-mapping.dmp

                    • memory/4888-145-0x0000000000000000-mapping.dmp