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Analysis

  • max time kernel
    152s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 23:38

General

  • Target

    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe

  • Size

    630KB

  • MD5

    4ffa402c3a2a75f91e4765f930a6912d

  • SHA1

    bf9dc1b017cbab7012b5b73f4fec260663743bb9

  • SHA256

    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

  • SHA512

    77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

  • SSDEEP

    12288:1026yDWbokVvKYPaq7mforb1ISwFXYl4mM87POGh+yY5OOFB:1026y6zVyYPqgdISVM87POLfB

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 6 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 14 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1188
    • C:\Users\Admin\AppData\Local\Temp\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe
      "C:\Users\Admin\AppData\Local\Temp\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe"
      1⤵
      • Modifies firewall policy service
      • UAC bypass
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1632
      • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
        "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
        2⤵
        • Modifies firewall policy service
        • UAC bypass
        • Windows security bypass
        • Executes dropped EXE
        • Deletes itself
        • Loads dropped DLL
        • Windows security modification
        • Checks whether UAC is enabled
        • Enumerates connected drives
        • Drops autorun.inf file
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:860
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1216
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1128

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\006BF8C1_Rar\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe

          Filesize

          558KB

          MD5

          7bde88a61e13bb4fad02a1501cb874dc

          SHA1

          d35869c8c02920bb6dfb96eb09fca608fe8cd506

          SHA256

          4b96eaa04499ba7946cafe281ec34da60265d31313131072996b5fc784bab731

          SHA512

          41157e578994e1e3a4e435f3186665c1d95b31cbb42abae8961037e2fdb0f3c40dd2ce852eeacbc6a6c12970fddadfa4cc7df487b0c7d722050fe3ba3a7ee61b

        • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

          Filesize

          630KB

          MD5

          4ffa402c3a2a75f91e4765f930a6912d

          SHA1

          bf9dc1b017cbab7012b5b73f4fec260663743bb9

          SHA256

          f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

          SHA512

          77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

        • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

          Filesize

          630KB

          MD5

          4ffa402c3a2a75f91e4765f930a6912d

          SHA1

          bf9dc1b017cbab7012b5b73f4fec260663743bb9

          SHA256

          f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

          SHA512

          77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

        • C:\Windows\SYSTEM.INI

          Filesize

          255B

          MD5

          e5288305db2a6ee805ee8bb7be7d38d1

          SHA1

          f291471f165ed711f24438922b6a398e0fd32ae2

          SHA256

          9db27cf34e46de441b0b426d95d208fe52ceb144caa2e8c73e0c14bccb33b024

          SHA512

          df22be934178357a83fcea3a23cfd2a8886b5ffbbbd20f6277aa34289295641f851b934cacab8ccc1a290ed5caaf541b7e342806378e063968cb8f8123a0d5a7

        • \Users\Admin\AppData\Local\Temp\nsyFDD1.tmp\InstallOptions.dll

          Filesize

          15KB

          MD5

          6e663f1a0de94bc05d64d020da5d6f36

          SHA1

          c5abb0033776d6ab1f07e5b3568f7d64f90e5b04

          SHA256

          458b70e1745dc6e768d2338ccf3e6e86436488954ca3763472d8ffec4e7177e4

          SHA512

          2a037c39f3a08d4a80494227990f36c4fef2f73c4a6ad74dcc334317a1372234c25d08d8b80d79e126881a49fa4b3f2fffe3604c959d9ceceb47acc7192cc6a5

        • \Users\Admin\AppData\Local\Temp\nsyFDD1.tmp\System.dll

          Filesize

          11KB

          MD5

          b9f430f71c7144d8ff4ab94be2785aa6

          SHA1

          c5c1e153caff7ad1d221a9acc8bbb831f05ccb05

          SHA256

          b496e81a74ce871236abcd096fb9a6b210b456bebaa7464fa844b3241e51a655

          SHA512

          c7ce431b6a1493fd7d1fe1b1c823ad22b582c43c8eb2fb6a471c648dd9df9953277c89932c66afd598d43ea36f4a8602e84cd175115266943071cbc8ce204099

        • \Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

          Filesize

          630KB

          MD5

          4ffa402c3a2a75f91e4765f930a6912d

          SHA1

          bf9dc1b017cbab7012b5b73f4fec260663743bb9

          SHA256

          f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

          SHA512

          77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

        • memory/860-63-0x0000000002000000-0x000000000308E000-memory.dmp

          Filesize

          16.6MB

        • memory/860-62-0x0000000000400000-0x00000000005F5000-memory.dmp

          Filesize

          2.0MB

        • memory/860-69-0x0000000002000000-0x000000000308E000-memory.dmp

          Filesize

          16.6MB

        • memory/860-70-0x0000000000230000-0x0000000000232000-memory.dmp

          Filesize

          8KB

        • memory/860-72-0x0000000000230000-0x0000000000232000-memory.dmp

          Filesize

          8KB

        • memory/860-71-0x0000000002000000-0x000000000308E000-memory.dmp

          Filesize

          16.6MB

        • memory/860-73-0x0000000000400000-0x00000000005F5000-memory.dmp

          Filesize

          2.0MB

        • memory/1632-54-0x0000000076091000-0x0000000076093000-memory.dmp

          Filesize

          8KB

        • memory/1632-61-0x0000000002050000-0x00000000030DE000-memory.dmp

          Filesize

          16.6MB

        • memory/1632-60-0x0000000000400000-0x00000000005F5000-memory.dmp

          Filesize

          2.0MB

        • memory/1632-55-0x0000000002050000-0x00000000030DE000-memory.dmp

          Filesize

          16.6MB