Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 17:52

General

  • Target
    99c4ba446289edff9894301900fc5bea.exe
  • Size 876KB
  • Sample240213-wfww5afe77
  • SHA256 3238be50a645b7049ed3d7ab2b115cfbade1981cde7e4ce7721ed465e8bca4d4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • redline

Botnet
  • Build2_Mastif

C2
  • 95.181.157.69:8552

Signatures

  • RedLine

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

  • RedLine payload 1 IoCs
  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Obfuscated with Agile.Net obfuscator 2 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99c4ba446289edff9894301900fc5bea.exe
    "C:\Users\Admin\AppData\Local\Temp\99c4ba446289edff9894301900fc5bea.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3892
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1564
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS445C.tmp\Install.cmd" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3936
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://iplogger.org/1XQju7
          4⤵
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:1140
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffc414c46f8,0x7ffc414c4708,0x7ffc414c4718
            5⤵
              PID:4184
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2192 /prefetch:3
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:228
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2140 /prefetch:2
              5⤵
                PID:464
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2728 /prefetch:8
                5⤵
                  PID:2368
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3340 /prefetch:1
                  5⤵
                    PID:4132
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3332 /prefetch:1
                    5⤵
                      PID:4000
                    • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5208 /prefetch:8
                      5⤵
                        PID:3324
                      • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5208 /prefetch:8
                        5⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:4888
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5344 /prefetch:1
                        5⤵
                          PID:2600
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5328 /prefetch:1
                          5⤵
                            PID:448
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5760 /prefetch:1
                            5⤵
                              PID:1768
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5696 /prefetch:1
                              5⤵
                                PID:908
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2128,812957974549320289,9036989678832149739,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=5556 /prefetch:2
                                5⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:5000
                        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
                          C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
                          2⤵
                          • Executes dropped EXE
                          • Suspicious use of SetThreadContext
                          PID:4732
                          • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
                            "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE"
                            3⤵
                            • Executes dropped EXE
                            • Suspicious use of AdjustPrivilegeToken
                            PID:4848
                      • C:\Windows\System32\CompPkgSrv.exe
                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                        1⤵
                          PID:3240
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:2544

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                RUNTIM~1.EXE.log

                                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RUNTIM~1.EXE.log
                                • Size 1KB
                                • SHA256 c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
                                • MD5 SHA1 SHA512

                                settings.dat

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                • Size 152B
                                • SHA256 cbb617cd6cde793f367df016b200d35ce3c521ab901bbcb52928576bb180bc11
                                • MD5 SHA1 SHA512

                                Network Persistent State

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                • Size 111B
                                • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                                • MD5 SHA1 SHA512

                                Network Persistent State

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                • Size 180B
                                • SHA256 f90fcadf34fbec9cabd9bcfdea0a63a1938aef5ea4c1f7b313e77f5d3f5bbdca
                                • MD5 SHA1 SHA512

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 5KB
                                • SHA256 01fefd281dda9cd5bdacf9ed0fe5327c602d54c4d985995a8591a364316b96aa
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 5KB
                                • SHA256 e6c55a2fc53afd5c55aae7a6482fa7683e2c80cfabce4b0b18c2aaf72f1b26d3
                                • MD5 SHA1 SHA512 SSDEEP

                                Secure Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences
                                • Size 24KB
                                • SHA256 7b22b0b16088ab7f7d6f938d7cfe9ae807856662ce3a63e7de6c8107186853e4
                                • MD5 SHA1 SHA512 SSDEEP

                                CURRENT

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                • Size 16B
                                • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                • MD5 SHA1 SHA512

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                • Size 10KB
                                • SHA256 0ce5135adcfa83a0a1380542e1c1baba0a7a64460f55fcc7a047243c4cecf252
                                • MD5 SHA1 SHA512 SSDEEP

                                Install.cmd

                                • Path C:\Users\Admin\AppData\Local\Temp\7zS445C.tmp\Install.cmd
                                • Size 51B
                                • SHA256 6a77796213adbc0eb764c070a3fdfcb5bfa3ad9b6215c1be43f09bfd32014782
                                • MD5 SHA1 SHA512

                                Install.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe
                                • Size 117KB
                                • SHA256 4e9a1202844e30f1d62d837cdb440764c851740ab8ee2bd4a8a31475bd449eea
                                • MD5 SHA1 SHA512 SSDEEP

                                RUNTIM~1.EXE

                                • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
                                • Size 1.0MB
                                • SHA256 bf89a45619528967430c483c01da54306e4f1b200a8c062697218fdd60bac93f
                                • MD5 SHA1 SHA512 SSDEEP

                                memory/4732-36-0x0000000005170000-0x0000000005202000-memory.dmp

                                memory/4732-99-0x0000000074B90000-0x0000000075340000-memory.dmp

                                memory/4732-55-0x0000000005300000-0x0000000005356000-memory.dmp

                                memory/4732-54-0x00000000050B0000-0x00000000050BA000-memory.dmp

                                memory/4732-51-0x00000000053C0000-0x00000000053D0000-memory.dmp

                                memory/4732-33-0x0000000005680000-0x0000000005C24000-memory.dmp

                                memory/4732-23-0x0000000004FF0000-0x000000000508C000-memory.dmp

                                memory/4732-21-0x0000000000650000-0x000000000075A000-memory.dmp

                                memory/4732-100-0x00000000053C0000-0x00000000053D0000-memory.dmp

                                memory/4732-110-0x0000000007F30000-0x0000000007FBA000-memory.dmp

                                memory/4732-111-0x000000000A670000-0x000000000A68E000-memory.dmp

                                memory/4732-60-0x0000000005620000-0x0000000005638000-memory.dmp

                                memory/4732-22-0x0000000074B90000-0x0000000075340000-memory.dmp

                                memory/4732-116-0x0000000074B90000-0x0000000075340000-memory.dmp

                                memory/4848-112-0x0000000000400000-0x000000000041E000-memory.dmp

                                memory/4848-119-0x0000000005230000-0x0000000005242000-memory.dmp

                                memory/4848-118-0x0000000005790000-0x0000000005DA8000-memory.dmp

                                memory/4848-129-0x00000000052D0000-0x000000000530C000-memory.dmp

                                memory/4848-130-0x0000000005380000-0x0000000005390000-memory.dmp

                                memory/4848-131-0x0000000005310000-0x000000000535C000-memory.dmp

                                memory/4848-132-0x0000000005580000-0x000000000568A000-memory.dmp

                                memory/4848-117-0x0000000074B90000-0x0000000075340000-memory.dmp

                                memory/4848-164-0x0000000074B90000-0x0000000075340000-memory.dmp

                                memory/4848-165-0x0000000005380000-0x0000000005390000-memory.dmp