Analysis

  • max time kernel
    117s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    08/07/2020, 05:44

General

  • Target

    tspm_1.bin.exe

  • Size

    1.1MB

  • MD5

    a4fac8df05ee106a9f658b9bb4f90d05

  • SHA1

    8d02ab35f57f4a98679935c7fd6d20e5ceef585a

  • SHA256

    7b4a13c022f0948f0a7ace0c2ea8b85af4f596338af14c3a1be2e63f55cbb335

  • SHA512

    c3d2c2f33637fed7b410ef15dce824ba21103fa970163a10759b1089e4814c0d22e7e22f5954ff7d08dd087ead822f7c8783a47ce1bd01d244728b3fb61f5bf7

Malware Config

Signatures

  • Suspicious use of WriteProcessMemory 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies service 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs
  • Interacts with shadow copies 2 TTPs 3 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 755 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Drops desktop.ini file(s) 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tspm_1.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\tspm_1.bin.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: EnumeratesProcesses
    • System policy modification
    • Checks whether UAC is enabled
    • UAC bypass
    • Drops desktop.ini file(s)
    PID:1464
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1296
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1880
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1836
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1564
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1536
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1980
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Modifies service
    PID:1904
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {D1CDBA2C-BE96-4D4B-ABBA-2F24EA1183B3} S-1-5-21-1131729243-447456001-3632642222-1000:AVGLFESB\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\tspm_1.bin.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Windows\tspm_1.bin.exe
      2⤵
      • Executes dropped EXE
      PID:1572

Network

MITRE ATT&CK Enterprise v6

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