Resubmissions

24-04-2021 06:39

210424-z9rcb7aepa 10

23-04-2021 19:10

210423-eqazybfbwe 10

23-04-2021 19:10

210423-11yc7me6fe 10

23-04-2021 18:20

210423-96m9f6fxjx 10

23-04-2021 13:38

210423-fv1qhsltzj 10

23-04-2021 13:38

210423-6hhapn6pdx 10

23-04-2021 13:38

210423-m5azl6mq1s 10

23-04-2021 13:38

210423-nlvbxenam6 10

23-04-2021 13:38

210423-y4rkc8l6ts 10

23-04-2021 05:23

210423-lejp16ex1n 10

Analysis

  • max time kernel
    1786s
  • max time network
    1694s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    22-04-2021 17:47

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
      PID:1012
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
      1⤵
        PID:1872
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s WpnService
        1⤵
          PID:2708
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2680
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Browser
          1⤵
            PID:2560
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
            1⤵
            • Modifies registry class
            PID:2424
          • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
            1⤵
            • Suspicious use of WriteProcessMemory
            PID:2116
            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
              2⤵
              • Executes dropped EXE
              • Drops file in Program Files directory
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:2916
              • C:\Windows\SysWOW64\rundll32.exe
                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                3⤵
                • Loads dropped DLL
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3840
            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
              2⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3752
              • C:\ProgramData\8432816.exe
                "C:\ProgramData\8432816.exe"
                3⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1168
              • C:\ProgramData\7597915.exe
                "C:\ProgramData\7597915.exe"
                3⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of WriteProcessMemory
                PID:3456
                • C:\ProgramData\Windows Host\Windows Host.exe
                  "C:\ProgramData\Windows Host\Windows Host.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:3140
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 3752 -s 1612
                3⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                PID:1276
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2372
            • \??\c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s BITS
              1⤵
              • Suspicious use of SetThreadContext
              • Modifies registry class
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3768
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k SystemNetworkService
                2⤵
                • Drops file in System32 directory
                • Checks processor information in registry
                • Modifies data under HKEY_USERS
                • Modifies registry class
                • Suspicious use of WriteProcessMemory
                PID:752
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s SENS
              1⤵
                PID:1448
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                1⤵
                  PID:1348
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Themes
                  1⤵
                    PID:1316
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                    1⤵
                      PID:1100
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:912

                      Network

                      MITRE ATT&CK Matrix ATT&CK v6

                      Persistence

                      Registry Run Keys / Startup Folder

                      1
                      T1060

                      Defense Evasion

                      Modify Registry

                      1
                      T1112

                      Credential Access

                      Credentials in Files

                      1
                      T1081

                      Discovery

                      Query Registry

                      2
                      T1012

                      System Information Discovery

                      2
                      T1082

                      Collection

                      Data from Local System

                      1
                      T1005

                      Command and Control

                      Web Service

                      1
                      T1102

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Program Files\install.dat
                        MD5

                        806c3221a013fec9530762750556c332

                        SHA1

                        36475bcfd0a18555d7c0413d007bbe80f7d321b5

                        SHA256

                        9bcecc5fb84d21db673c81a7ed1d10b28686b8261f79136f748ab7bbad7752f7

                        SHA512

                        56bbaafe7b0883f4e5dcff00ae69339a3b81ac8ba90b304aeab3e4e7e7523b568fd9b269241fc38a39f74894084f1f252a91c22b79cc0a16f9e135859a13145e

                      • C:\Program Files\install.dll
                        MD5

                        fe60ddbeab6e50c4f490ddf56b52057c

                        SHA1

                        6a71fdf73761a1192fd9c6961f66754a63d6db17

                        SHA256

                        9fcfa73600ff1b588015ffa20779cec6714e48ee6ae15db8766f7ffd5ee3031d

                        SHA512

                        0113b47ba1a33a2f597a26c9b66435483373cde4edb183e0e92abef8ed003743f426ba5ffe25a5807c030cc14d8a95d73aa6af95a85f44a86dd40264ecb96536

                      • C:\ProgramData\7597915.exe
                        MD5

                        055a20b8347170594cbc8b8aa2197b2a

                        SHA1

                        9bd84ab6cb4df6cb0fd1c7a0fe7efe31357e1f10

                        SHA256

                        03c8a390f7030ea876188436d6cbe99592b739d40a53e60ad0869c4c6194d828

                        SHA512

                        914c928a4060ddc2bda4e96918c22c4df14160e869a6c5b62eeafe7bb1044006993532e55929d2d89bac08c1b896619b016a2caf6011d155646fb7421ba3b6f2

                      • C:\ProgramData\7597915.exe
                        MD5

                        055a20b8347170594cbc8b8aa2197b2a

                        SHA1

                        9bd84ab6cb4df6cb0fd1c7a0fe7efe31357e1f10

                        SHA256

                        03c8a390f7030ea876188436d6cbe99592b739d40a53e60ad0869c4c6194d828

                        SHA512

                        914c928a4060ddc2bda4e96918c22c4df14160e869a6c5b62eeafe7bb1044006993532e55929d2d89bac08c1b896619b016a2caf6011d155646fb7421ba3b6f2

                      • C:\ProgramData\8432816.exe
                        MD5

                        6c275e3ad15bd4b6852dea757dff4dd1

                        SHA1

                        673f52a43085a8fdc93fffe24f85213bb2ce1993

                        SHA256

                        79e17f3dd9608d4897768138ce765aa3fbc253e65dd0b1031ea821cb68f3c1db

                        SHA512

                        a8d2f693ccbba557d1e8b5cef567f49b63bd1bdcf867b624ae7417875dda07f177d3392010e39dd7ab9fb778fb0b6fe30359fb005a5305610c685949ca5a5f7b

                      • C:\ProgramData\8432816.exe
                        MD5

                        6c275e3ad15bd4b6852dea757dff4dd1

                        SHA1

                        673f52a43085a8fdc93fffe24f85213bb2ce1993

                        SHA256

                        79e17f3dd9608d4897768138ce765aa3fbc253e65dd0b1031ea821cb68f3c1db

                        SHA512

                        a8d2f693ccbba557d1e8b5cef567f49b63bd1bdcf867b624ae7417875dda07f177d3392010e39dd7ab9fb778fb0b6fe30359fb005a5305610c685949ca5a5f7b

                      • C:\ProgramData\Windows Host\Windows Host.exe
                        MD5

                        055a20b8347170594cbc8b8aa2197b2a

                        SHA1

                        9bd84ab6cb4df6cb0fd1c7a0fe7efe31357e1f10

                        SHA256

                        03c8a390f7030ea876188436d6cbe99592b739d40a53e60ad0869c4c6194d828

                        SHA512

                        914c928a4060ddc2bda4e96918c22c4df14160e869a6c5b62eeafe7bb1044006993532e55929d2d89bac08c1b896619b016a2caf6011d155646fb7421ba3b6f2

                      • C:\ProgramData\Windows Host\Windows Host.exe
                        MD5

                        055a20b8347170594cbc8b8aa2197b2a

                        SHA1

                        9bd84ab6cb4df6cb0fd1c7a0fe7efe31357e1f10

                        SHA256

                        03c8a390f7030ea876188436d6cbe99592b739d40a53e60ad0869c4c6194d828

                        SHA512

                        914c928a4060ddc2bda4e96918c22c4df14160e869a6c5b62eeafe7bb1044006993532e55929d2d89bac08c1b896619b016a2caf6011d155646fb7421ba3b6f2

                      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                        MD5

                        3b1b318df4d314a35dce9e8fd89e5121

                        SHA1

                        55b0f8d56212a74bda0fc5f8cc0632ef52a4bc71

                        SHA256

                        4df9e7fcd10900ae5def897377f54856b0ddad1798fa22614eba56096940885b

                        SHA512

                        f04faca320d344378dd31bf05556fb3ac02873e46e2140d5858162e739f5c25bc9b32d619587c84c36b768b9193ea5292d63f62bb0b8458b35d65959b52df6b4

                      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                        MD5

                        3b1b318df4d314a35dce9e8fd89e5121

                        SHA1

                        55b0f8d56212a74bda0fc5f8cc0632ef52a4bc71

                        SHA256

                        4df9e7fcd10900ae5def897377f54856b0ddad1798fa22614eba56096940885b

                        SHA512

                        f04faca320d344378dd31bf05556fb3ac02873e46e2140d5858162e739f5c25bc9b32d619587c84c36b768b9193ea5292d63f62bb0b8458b35d65959b52df6b4

                      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                        MD5

                        e72eb3a565d7b5b83c7ff6fad519c6c9

                        SHA1

                        1a2668a26b01828eec1415aa614743abb0a4fb70

                        SHA256

                        8ff1e74643983f7ca9bca70f1bea562e805a86421defde1bd57fc0da3722f599

                        SHA512

                        71ae4db9c307c068f31a4e6471d950d1112d89d5661a4960dffbf6a7343cc313f98cfc35c5a10d38aae68be4b0a3f6a702fd5c28d938ca00094b26d0bcf03da3

                      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                        MD5

                        e72eb3a565d7b5b83c7ff6fad519c6c9

                        SHA1

                        1a2668a26b01828eec1415aa614743abb0a4fb70

                        SHA256

                        8ff1e74643983f7ca9bca70f1bea562e805a86421defde1bd57fc0da3722f599

                        SHA512

                        71ae4db9c307c068f31a4e6471d950d1112d89d5661a4960dffbf6a7343cc313f98cfc35c5a10d38aae68be4b0a3f6a702fd5c28d938ca00094b26d0bcf03da3

                      • \Program Files\install.dll
                        MD5

                        fe60ddbeab6e50c4f490ddf56b52057c

                        SHA1

                        6a71fdf73761a1192fd9c6961f66754a63d6db17

                        SHA256

                        9fcfa73600ff1b588015ffa20779cec6714e48ee6ae15db8766f7ffd5ee3031d

                        SHA512

                        0113b47ba1a33a2f597a26c9b66435483373cde4edb183e0e92abef8ed003743f426ba5ffe25a5807c030cc14d8a95d73aa6af95a85f44a86dd40264ecb96536

                      • memory/752-136-0x00007FF6A78A4060-mapping.dmp
                      • memory/752-177-0x000001E583770000-0x000001E5837E0000-memory.dmp
                        Filesize

                        448KB

                      • memory/752-224-0x000001E585D00000-0x000001E585E01000-memory.dmp
                        Filesize

                        1.0MB

                      • memory/912-243-0x000001E4B4BF0000-0x000001E4B4C60000-memory.dmp
                        Filesize

                        448KB

                      • memory/912-194-0x000001E4B4B10000-0x000001E4B4B80000-memory.dmp
                        Filesize

                        448KB

                      • memory/1012-173-0x000001E6DB280000-0x000001E6DB2F0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1012-235-0x000001E6DB8B0000-0x000001E6DB920000-memory.dmp
                        Filesize

                        448KB

                      • memory/1100-241-0x00000258DF540000-0x00000258DF5B0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1100-191-0x00000258DF030000-0x00000258DF0A0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1168-214-0x0000000004D80000-0x0000000004D81000-memory.dmp
                        Filesize

                        4KB

                      • memory/1168-174-0x0000000000000000-mapping.dmp
                      • memory/1168-196-0x0000000000510000-0x0000000000511000-memory.dmp
                        Filesize

                        4KB

                      • memory/1168-206-0x00000000047F0000-0x000000000481B000-memory.dmp
                        Filesize

                        172KB

                      • memory/1168-222-0x0000000007C00000-0x0000000007C01000-memory.dmp
                        Filesize

                        4KB

                      • memory/1168-208-0x00000000026D0000-0x00000000026D1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1168-227-0x00000000082B0000-0x00000000082B1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1168-201-0x00000000026B0000-0x00000000026B1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1316-167-0x000001F058470000-0x000001F0584E0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1316-249-0x000001F058F40000-0x000001F058FB0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1348-172-0x0000022EED100000-0x0000022EED170000-memory.dmp
                        Filesize

                        448KB

                      • memory/1348-251-0x0000022EED520000-0x0000022EED590000-memory.dmp
                        Filesize

                        448KB

                      • memory/1448-155-0x000001A710610000-0x000001A710680000-memory.dmp
                        Filesize

                        448KB

                      • memory/1448-245-0x000001A710770000-0x000001A7107E0000-memory.dmp
                        Filesize

                        448KB

                      • memory/1872-247-0x0000023E977B0000-0x0000023E97820000-memory.dmp
                        Filesize

                        448KB

                      • memory/1872-161-0x0000023E97740000-0x0000023E977B0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2372-239-0x000001A3B5940000-0x000001A3B59B0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2372-189-0x000001A3B4EE0000-0x000001A3B4F50000-memory.dmp
                        Filesize

                        448KB

                      • memory/2424-181-0x0000018CA3F40000-0x0000018CA3FB0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2424-237-0x0000018CA4510000-0x0000018CA4580000-memory.dmp
                        Filesize

                        448KB

                      • memory/2560-162-0x000001B274C80000-0x000001B274CF0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2560-233-0x000001B2752B0000-0x000001B275320000-memory.dmp
                        Filesize

                        448KB

                      • memory/2680-183-0x0000023A60240000-0x0000023A602B0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2680-253-0x0000023A60940000-0x0000023A609B0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2708-188-0x0000020ED6B70000-0x0000020ED6BE0000-memory.dmp
                        Filesize

                        448KB

                      • memory/2708-255-0x0000020ED6F20000-0x0000020ED6F90000-memory.dmp
                        Filesize

                        448KB

                      • memory/2916-116-0x0000000000000000-mapping.dmp
                      • memory/3140-220-0x0000000005570000-0x0000000005571000-memory.dmp
                        Filesize

                        4KB

                      • memory/3140-221-0x000000000AEC0000-0x000000000AEC1000-memory.dmp
                        Filesize

                        4KB

                      • memory/3140-209-0x0000000000000000-mapping.dmp
                      • memory/3456-193-0x0000000000000000-mapping.dmp
                      • memory/3456-207-0x0000000005400000-0x0000000005401000-memory.dmp
                        Filesize

                        4KB

                      • memory/3456-205-0x000000000A980000-0x000000000A981000-memory.dmp
                        Filesize

                        4KB

                      • memory/3456-204-0x000000000AE80000-0x000000000AE81000-memory.dmp
                        Filesize

                        4KB

                      • memory/3456-203-0x0000000002F20000-0x0000000002F2E000-memory.dmp
                        Filesize

                        56KB

                      • memory/3456-202-0x0000000002DC0000-0x0000000002DC1000-memory.dmp
                        Filesize

                        4KB

                      • memory/3456-199-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
                        Filesize

                        4KB

                      • memory/3752-134-0x0000000000F80000-0x0000000000F81000-memory.dmp
                        Filesize

                        4KB

                      • memory/3752-131-0x0000000000F60000-0x0000000000F7C000-memory.dmp
                        Filesize

                        112KB

                      • memory/3752-120-0x0000000000000000-mapping.dmp
                      • memory/3752-160-0x000000001B5A0000-0x000000001B5A2000-memory.dmp
                        Filesize

                        8KB

                      • memory/3752-126-0x0000000000A30000-0x0000000000A31000-memory.dmp
                        Filesize

                        4KB

                      • memory/3752-129-0x0000000000F50000-0x0000000000F51000-memory.dmp
                        Filesize

                        4KB

                      • memory/3768-154-0x000001E653D90000-0x000001E653E00000-memory.dmp
                        Filesize

                        448KB

                      • memory/3768-228-0x000001E653A00000-0x000001E653A04000-memory.dmp
                        Filesize

                        16KB

                      • memory/3768-150-0x000001E653CD0000-0x000001E653D1B000-memory.dmp
                        Filesize

                        300KB

                      • memory/3768-230-0x000001E6539A0000-0x000001E6539A4000-memory.dmp
                        Filesize

                        16KB

                      • memory/3768-229-0x000001E6539A0000-0x000001E6539A1000-memory.dmp
                        Filesize

                        4KB

                      • memory/3840-130-0x00000000049D0000-0x0000000004A2C000-memory.dmp
                        Filesize

                        368KB

                      • memory/3840-128-0x00000000010AD000-0x00000000011AE000-memory.dmp
                        Filesize

                        1.0MB

                      • memory/3840-119-0x0000000000000000-mapping.dmp