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Windows
Analysis Report
SecuriteInfo.com.Win32.Malware-gen.9746.16728.exe
Overview
General Information
Detection
FormBook, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected FormBook
Yara detected GuLoader
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Obfuscated command line found
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspicious Script Execution From Temp Folder
Suspicious powershell command line found
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
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 call native functions
Contains functionality to read the PEB
Contains functionality to shutdown / reboot the system
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Detected potential crypto function
Dropped file seen in connection with other malware
Drops PE files
Enables debug privileges
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 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
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Direct Autorun Keys Modification
Sigma detected: Potential Dosfuscation Activity
Sigma detected: Potential Persistence Attempt Via Run Keys Using Reg.EXE
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Uses reg.exe to modify the Windows registry
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara signature match
Classification
- System is w10x64
- SecuriteInfo.com.Win32.Malware-gen.9746.16728.exe (PID: 7592 cmdline:
"C:\Users\ user\Deskt op\Securit eInfo.com. Win32.Malw are-gen.97 46.16728.e xe" MD5: 4621FEA50E1982E6F753EFE7D1BE2B35) - powershell.exe (PID: 7656 cmdline:
"powershel l.exe" -wi ndowstyle hidden "$I ndetermina tive=Get-C ontent 'C: \Users\use r\AppData\ Local\Temp \Moviedom2 30\Enforce dly251\Afv rgningerne s.Ign37';$ Introducer er=$Indete rminative. SubString( 18884,3);. $Introduce rer($Indet erminative )" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 7664 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 7816 cmdline:
"C:\Window s\system32 \cmd.exe" /c "set /A 1^^0" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - Overfondle.exe (PID: 7376 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\Overfo ndle.exe" MD5: 4621FEA50E1982E6F753EFE7D1BE2B35) - cmd.exe (PID: 1352 cmdline:
"C:\Window s\System32 \cmd.exe" /c REG ADD HKCU\Soft ware\Micro soft\Windo ws\Current Version\Ru n /f /v "H akkebrttet " /t REG_E XPAND_SZ / d "%elaf% -windowsty le minimiz ed $Ultram icrotome=( Get-ItemPr operty -Pa th 'HKCU:\ noncoheren t\').Skvad redes;%ela f% ($Ultra microtome) " MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 7488 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - reg.exe (PID: 2712 cmdline:
REG ADD HK CU\Softwar e\Microsof t\Windows\ CurrentVer sion\Run / f /v "Hakk ebrttet" / t REG_EXPA ND_SZ /d " %elaf% -wi ndowstyle minimized $Ultramicr otome=(Get -ItemPrope rty -Path 'HKCU:\non coherent\' ).Skvadred es;%elaf% ($Ultramic rotome)" MD5: CDD462E86EC0F20DE2A1D781928B1B0C) - rmGjiHyfWQcajCGtrYkAoHJJOdK.exe (PID: 5796 cmdline:
"C:\Progra m Files (x 86)\hjbOBb qHClkGLKNP vXXxpOVoDB LJZtDcdsOb rIHXwdfhzN ckcWntHExp AxpjApDMgY SbQQmIoQHm YI\rmGjiHy fWQcajCGtr YkAoHJJOdK .exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - cmd.exe (PID: 6348 cmdline:
"C:\Window s\SysWOW64 \cmd.exe" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - rmGjiHyfWQcajCGtrYkAoHJJOdK.exe (PID: 5852 cmdline:
"C:\Progra m Files (x 86)\hjbOBb qHClkGLKNP vXXxpOVoDB LJZtDcdsOb rIHXwdfhzN ckcWntHExp AxpjApDMgY SbQQmIoQHm YI\rmGjiHy fWQcajCGtr YkAoHJJOdK .exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 2180 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. |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
CloudEyE, GuLoader | CloudEyE (initially named GuLoader) is a small VB5/6 downloader. It typically downloads RATs/Stealers, such as Agent Tesla, Arkei/Vidar, Formbook, Lokibot, Netwire and Remcos, often but not always from Google Drive. The downloaded payload is xored. | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 10 entries |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), Max Altgelt (Nextron Systems), Tim Shelton: |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, oscd.community: |
Source: | Author: frack113, Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | URL Reputation: | ||
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Source: | Virustotal: | Perma Link | ||
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Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
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Source: | Code function: | 0_2_00405A19 | |
Source: | Code function: | 0_2_004065CE | |
Source: | Code function: | 0_2_004027AA | |
Source: | Code function: | 14_2_003DB880 |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
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Source: | File opened: | Jump to behavior |
Source: | Code function: | 14_2_003C9430 | |
Source: | Code function: | 14_2_003D1DAF | |
Source: | Code function: | 14_2_003D1DD0 |
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Source: | UDP traffic detected without corresponding DNS query: | ||
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