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Analysis

  • max time kernel
    91s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/10/2022, 18:02

General

  • Target

    bf8cd12acb64e52f34387ade85b0fb18.exe

  • Size

    965KB

  • MD5

    bf8cd12acb64e52f34387ade85b0fb18

  • SHA1

    e538eba64d5134636fb14abf0bd4580b2d9b13ca

  • SHA256

    ac77a1b2a864a90a510537b096cdd499b2fa4695fb8112e9e2f1d200ec4a8c12

  • SHA512

    b05530161f35e6c462516ff0584210a63e34748987f1aba2566f54ac9b27e4985577e239d45eddce6286067a3436d0741f4fc88eb5f393668d9446a25ba561f4

  • SSDEEP

    24576:G53uhFbHKXdz66otpMa0pVYMfDE849CNlJSk3Pnzu:G5+hFWtzRGpMdL9fDE849CN/Skfzu

Malware Config

Extracted

Family

redline

Botnet

0808-ab

C2

144.202.95.227:80

Signatures

  • RedLine

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

  • RedLine payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

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

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

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf8cd12acb64e52f34387ade85b0fb18.exe
    "C:\Users\Admin\AppData\Local\Temp\bf8cd12acb64e52f34387ade85b0fb18.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd < gsTWaUtfdIy.com
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Windows\SysWOW64\cmd.exe
        cmd
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4924
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 1 BChfuO.bIvPIb
          4⤵
          • Runs ping.exe
          PID:4804
        • C:\Windows\SysWOW64\certutil.exe
          certutil -decode RMBMfDVJsYtfOtLClj.com w
          4⤵
            PID:4844
          • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com
            csrss.com w
            4⤵
            • Executes dropped EXE
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:4748
            • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com
              C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com w
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              • Suspicious use of WriteProcessMemory
              PID:4348
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                6⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3108
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C taskkill /F /PID 3108 && choice /C Y /N /D Y /T 3 & Del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                  7⤵
                    PID:1260
                    • C:\Windows\SysWOW64\taskkill.exe
                      taskkill /F /PID 3108
                      8⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:4936
                    • C:\Windows\SysWOW64\choice.exe
                      choice /C Y /N /D Y /T 3
                      8⤵
                        PID:444
              • C:\Windows\SysWOW64\PING.EXE
                ping 127.0.0.1 -n 3
                4⤵
                • Runs ping.exe
                PID:1484
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -en 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
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4932

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\RMBMfDVJsYtfOtLClj.com

          Filesize

          1.0MB

          MD5

          933008580964d519a02f4b588108bdb4

          SHA1

          4856a2fa045b4370bee05542abaec4cc595ddeb0

          SHA256

          81d77697d8dc9caaada1594549fd50e0efafa38f91cf56b8e75259bba13fd0ac

          SHA512

          3e00a7b10c17fa1ea7260d62283eb5afc0318e60386fc80904817024c6b9793e2d27b0b07efbc694e1435944b530894103598f6e148277579f75f6935f7e596d

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\UHgfmTHdwSmBZQWsnF.com

          Filesize

          154KB

          MD5

          94afefeee0f34c3fe9bce965736f91cd

          SHA1

          d3fd61d42a6d8df0886d0d827791a8af5c4fb318

          SHA256

          357e29849c872014ea9af003c6755a857808dcd678e464d0beb65a5ba9ace69d

          SHA512

          2b181eb28aa640f7ca7017edbee00792a83647b13f8380f2d2dab1763f9350364eb5421279a58c16ac51fba65232ba7d1a04b845a1732cb16ce0618440e6693c

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com

          Filesize

          921KB

          MD5

          8ed172328f643375ac09b31ffba0eb63

          SHA1

          c6716e5e5a311f597e37c5660b0387ab8f77b2a0

          SHA256

          23e87924005aeef08ab3c9402aa749c0373ed9fa6c1706c13ca1df5ec33f8928

          SHA512

          79efbac3cbf2bbbf1b5572a3036845fd544210a01adf9850d22587df12fd84832e14e8f7e0476955a8d9bb42ff0be5ca4443cee8e83dc396e70d850e31c60938

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com

          Filesize

          921KB

          MD5

          8ed172328f643375ac09b31ffba0eb63

          SHA1

          c6716e5e5a311f597e37c5660b0387ab8f77b2a0

          SHA256

          23e87924005aeef08ab3c9402aa749c0373ed9fa6c1706c13ca1df5ec33f8928

          SHA512

          79efbac3cbf2bbbf1b5572a3036845fd544210a01adf9850d22587df12fd84832e14e8f7e0476955a8d9bb42ff0be5ca4443cee8e83dc396e70d850e31c60938

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\gsTWaUtfdIy.com

          Filesize

          410B

          MD5

          bc98680b05d09039d8f0ce53c92fce23

          SHA1

          2dc2da559d9cafeb9104a88fb6aec0af9e41efef

          SHA256

          89fa517cdaf5c467ee9b5babf559991e915fbb1e27400d81d40deb1834075dab

          SHA512

          414b86061b229d0468065c3b365846525e4f428725ead2a191f6eb9a76ad3a3aea7bf13f3d94274017f0794e2c86ae2ca39e214e03c42a411d7f02afd77fae08

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\lxUwnmQHLTelioanY.com

          Filesize

          921KB

          MD5

          c317736793ef5129f12a3568cd679422

          SHA1

          e68b55969c5f2159c847a629fac3731c0c315d53

          SHA256

          cbb5d906c63cbcb891b35e53156b643ac26c5dec922f43b2fd121ccca60beb62

          SHA512

          69cb5fd5f1a30c3c786ca945b8de6a460d03605fc3416a3c33e69691603e1a43ad0cfefe9cd5d6af1a154b701ecf34526cc05d9235a4e38acf994eb0edb1a82c

        • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\w

          Filesize

          776KB

          MD5

          f199cb4506da1c476ea6815ce34b0b78

          SHA1

          f12014971bc9d510962399d88cd8057a963e63a1

          SHA256

          fa6b8755da00b034511195fb9c65f33ec170daa34585e175b3f7e94ebcbb7d0a

          SHA512

          8dd42cf9ed168f07b120f60b99a815439a7510e6d4e165be6c689fdf6e13b1affc2647bf3f4a7f1a227d560e88d250158812f3072e71a374944942de9b1647d0

        • memory/3108-162-0x0000000017510000-0x000000001754C000-memory.dmp

          Filesize

          240KB

        • memory/3108-163-0x00000000177B0000-0x00000000178BA000-memory.dmp

          Filesize

          1.0MB

        • memory/3108-161-0x00000000174B0000-0x00000000174C2000-memory.dmp

          Filesize

          72KB

        • memory/3108-160-0x0000000017BB0000-0x00000000181C8000-memory.dmp

          Filesize

          6.1MB

        • memory/3108-159-0x0000000000D70000-0x0000000000D9C000-memory.dmp

          Filesize

          176KB

        • memory/4932-148-0x0000000005A80000-0x00000000060A8000-memory.dmp

          Filesize

          6.2MB

        • memory/4932-155-0x0000000006D50000-0x0000000006D72000-memory.dmp

          Filesize

          136KB

        • memory/4932-156-0x00000000080E0000-0x0000000008684000-memory.dmp

          Filesize

          5.6MB

        • memory/4932-157-0x0000000008D10000-0x000000000938A000-memory.dmp

          Filesize

          6.5MB

        • memory/4932-154-0x0000000006CD0000-0x0000000006CEA000-memory.dmp

          Filesize

          104KB

        • memory/4932-153-0x0000000007A90000-0x0000000007B26000-memory.dmp

          Filesize

          600KB

        • memory/4932-152-0x00000000067E0000-0x00000000067FE000-memory.dmp

          Filesize

          120KB

        • memory/4932-151-0x0000000006290000-0x00000000062F6000-memory.dmp

          Filesize

          408KB

        • memory/4932-150-0x0000000006220000-0x0000000006286000-memory.dmp

          Filesize

          408KB

        • memory/4932-149-0x0000000005A40000-0x0000000005A62000-memory.dmp

          Filesize

          136KB

        • memory/4932-147-0x0000000003300000-0x0000000003336000-memory.dmp

          Filesize

          216KB