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Windows
Analysis Report
Halkbank_Ekstre_20191102_073809_405251-PDF.com.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
System process connects to network (likely due to code injection or exploit)
Detected unpacking (changes PE section rights)
Antivirus detection for URL or domain
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
Snort IDS alert for network traffic
Sample uses process hollowing technique
Tries to steal Mail credentials (via file / registry access)
Maps a DLL or memory area into another process
Machine Learning detection for sample
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Modifies the context of a thread in another process (thread injection)
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Yara signature match
Antivirus or Machine Learning detection for unpacked file
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
HTTP GET or POST without a user agent
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops PE files
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality for read data from the clipboard
Classification
- System is w10x64
- Halkbank_Ekstre_20191102_073809_405251-PDF.com.exe (PID: 2064 cmdline:
C:\Users\u ser\Deskto p\Halkbank _Ekstre_20 191102_073 809_405251 -PDF.com.e xe MD5: 0D84005AF71574A568567967E666CDA5) - vokkqsp.exe (PID: 1240 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\vokkqs p.exe" C:\ Users\user \AppData\L ocal\Temp\ kxgycvzd.l wf MD5: D2FAF24547268D9525AE7E78CD4DE87A) - conhost.exe (PID: 5584 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) - vokkqsp.exe (PID: 2448 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\vokkqsp .exe MD5: D2FAF24547268D9525AE7E78CD4DE87A) - explorer.exe (PID: 3528 cmdline:
C:\Windows \Explorer. EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D) - colorcpl.exe (PID: 5260 cmdline:
C:\Windows \SysWOW64\ colorcpl.e xe MD5: 746F3B5E7652EA0766BA10414D317981)
- 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 | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Click to see the 13 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Click to see the 1 entries |
⊘No Sigma rule has matched
Timestamp: | 192.168.2.4198.54.117.21249703802031449 02/20/23-11:24:46.771477 |
SID: | 2031449 |
Source Port: | 49703 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4198.54.117.21249703802031412 02/20/23-11:24:46.771477 |
SID: | 2031412 |
Source Port: | 49703 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4198.54.117.21249703802031453 02/20/23-11:24:46.771477 |
SID: | 2031453 |
Source Port: | 49703 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.48.8.8.856572532023883 02/20/23-11:23:29.507639 |
SID: | 2023883 |
Source Port: | 56572 |
Destination Port: | 53 |
Protocol: | UDP |
Classtype: | Potentially Bad Traffic |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
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Source: | Code function: | 0_2_00405D74 | |
Source: | Code function: | 0_2_0040699E | |
Source: | Code function: | 0_2_0040290B | |
Source: | Code function: | 1_2_00424002 | |
Source: | Code function: | 1_2_0040101E | |
Source: | Code function: | 1_2_0040101F | |
Source: | Code function: | 1_2_004243EC |
Networking |
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Source: | Network Connect: | Jump to behavior | ||
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