Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    13-01-2021 07:36

General

  • Target

    PO-5042.scr

  • Size

    1.5MB

  • MD5

    f502ba6dcaa52430ff540dbdef13c40b

  • SHA1

    b697dbbac2192c5416648413f0639e9da4763c9a

  • SHA256

    b1251d0a542cd96f6957904d30289cbf675035ae79ac4158fc098aa84cd22506

  • SHA512

    b8d1a484012238d7a0d49bbe2077231b2bc39cd0581bc8e41b8e24ff2fcc39580ed8cecafea2570acf1df9d3ee1eb713415c80d1af1735fc029fe696b19d5d81

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 2 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-5042.scr
    "C:\Users\Admin\AppData\Local\Temp\PO-5042.scr" /S
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3928
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explore" /t REG_SZ /d "C:\Users\Admin\explore.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:192
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explore" /t REG_SZ /d "C:\Users\Admin\explore.exe"
        3⤵
        • Adds Run key to start application
        PID:2364
    • C:\Users\Admin\explore.exe
      "C:\Users\Admin\explore.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3740
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3624

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\explore.exe

    MD5

    f502ba6dcaa52430ff540dbdef13c40b

    SHA1

    b697dbbac2192c5416648413f0639e9da4763c9a

    SHA256

    b1251d0a542cd96f6957904d30289cbf675035ae79ac4158fc098aa84cd22506

    SHA512

    b8d1a484012238d7a0d49bbe2077231b2bc39cd0581bc8e41b8e24ff2fcc39580ed8cecafea2570acf1df9d3ee1eb713415c80d1af1735fc029fe696b19d5d81

  • C:\Users\Admin\explore.exe

    MD5

    f502ba6dcaa52430ff540dbdef13c40b

    SHA1

    b697dbbac2192c5416648413f0639e9da4763c9a

    SHA256

    b1251d0a542cd96f6957904d30289cbf675035ae79ac4158fc098aa84cd22506

    SHA512

    b8d1a484012238d7a0d49bbe2077231b2bc39cd0581bc8e41b8e24ff2fcc39580ed8cecafea2570acf1df9d3ee1eb713415c80d1af1735fc029fe696b19d5d81

  • memory/192-9-0x0000000000000000-mapping.dmp

  • memory/2364-10-0x0000000000000000-mapping.dmp

  • memory/3624-24-0x00000000004624FE-mapping.dmp

  • memory/3624-27-0x0000000073BA0000-0x000000007428E000-memory.dmp

    Filesize

    6.9MB

  • memory/3624-34-0x0000000006B90000-0x0000000006B91000-memory.dmp

    Filesize

    4KB

  • memory/3624-32-0x00000000068F0000-0x00000000068F1000-memory.dmp

    Filesize

    4KB

  • memory/3624-23-0x0000000000400000-0x0000000000468000-memory.dmp

    Filesize

    416KB

  • memory/3624-30-0x0000000005C60000-0x0000000005C61000-memory.dmp

    Filesize

    4KB

  • memory/3740-11-0x0000000000000000-mapping.dmp

  • memory/3740-14-0x0000000073BA0000-0x000000007428E000-memory.dmp

    Filesize

    6.9MB

  • memory/3740-21-0x0000000007E40000-0x0000000007E4B000-memory.dmp

    Filesize

    44KB

  • memory/3740-22-0x0000000007E60000-0x0000000007E61000-memory.dmp

    Filesize

    4KB

  • memory/3928-6-0x0000000004E90000-0x0000000004EAE000-memory.dmp

    Filesize

    120KB

  • memory/3928-3-0x0000000000480000-0x0000000000481000-memory.dmp

    Filesize

    4KB

  • memory/3928-5-0x0000000004F10000-0x0000000004F11000-memory.dmp

    Filesize

    4KB

  • memory/3928-2-0x0000000073BA0000-0x000000007428E000-memory.dmp

    Filesize

    6.9MB

  • memory/3928-8-0x0000000007910000-0x0000000007911000-memory.dmp

    Filesize

    4KB

  • memory/3928-7-0x0000000004F00000-0x0000000004F01000-memory.dmp

    Filesize

    4KB