Analysis

  • max time kernel
    145s
  • max time network
    144s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    03-12-2020 13:08

General

  • Target

    prescrivere 12.20.doc

  • Size

    145KB

  • MD5

    b53e10e01be1eff9f160d798c7292058

  • SHA1

    3f553e215de6b65fad42346d5891482a17d53555

  • SHA256

    e5cb6bf749b22e4232541bdd75087559bcba643bed551040ec74a561d8de259d

  • SHA512

    e5a454a96e047a84df1778bb38cf271f32484d84a3bcd8125d4ad687c9650abb4237b1f572b1a878e101efadfffe47dbffb6924e795d3a387336a30fb717575d

Score
10/10

Malware Config

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Process spawned unexpected child process 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 56 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 30 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\prescrivere 12.20.doc" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:500
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 c:\programdata\GsXVM.pdf
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:208
      • C:\Windows\SysWOW64\regsvr32.exe
        c:\programdata\GsXVM.pdf
        3⤵
        • Loads dropped DLL
        PID:3476
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3804 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:644
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2264 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2860
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:724
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:724 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:3592

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \??\c:\programdata\GsXVM.pdf
    MD5

    077f36d2ffcf5ee8c2c240f73327d45d

    SHA1

    521d1b499a7039c4cc792b612c12bf17c81f5823

    SHA256

    f48cd2a30ec043340a606a7ae60fbb91a7fd938be937ff08a10463734f89adc4

    SHA512

    aabe08bd5c849e08886916191f45384454c2f372c67f2fd3e2b8a83cd91ccf0dc48f2273838564cb02ba4d033a9fb8fd811e9371c1d0ac2713a4674493f1b62c

  • \ProgramData\GsXVM.pdf
    MD5

    077f36d2ffcf5ee8c2c240f73327d45d

    SHA1

    521d1b499a7039c4cc792b612c12bf17c81f5823

    SHA256

    f48cd2a30ec043340a606a7ae60fbb91a7fd938be937ff08a10463734f89adc4

    SHA512

    aabe08bd5c849e08886916191f45384454c2f372c67f2fd3e2b8a83cd91ccf0dc48f2273838564cb02ba4d033a9fb8fd811e9371c1d0ac2713a4674493f1b62c

  • memory/208-8-0x0000000000000000-mapping.dmp
  • memory/500-2-0x000001B1F6290000-0x000001B1F68C7000-memory.dmp
    Filesize

    6.2MB

  • memory/500-3-0x000001B181BA3000-0x000001B181BA8000-memory.dmp
    Filesize

    20KB

  • memory/644-12-0x0000000000000000-mapping.dmp
  • memory/2860-13-0x0000000000000000-mapping.dmp
  • memory/3476-10-0x0000000000000000-mapping.dmp
  • memory/3592-14-0x0000000000000000-mapping.dmp