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Windows
Analysis Report
Doc 1Z881A080453968203.exe
Overview
General Information
Detection
FormBook, PureLog Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Found direct / indirect Syscall (likely to bypass EDR)
Loading BitLocker PowerShell Module
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)
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
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
Internet Provider 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: Powershell Defender Exclusion
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- Doc 1Z881A080453968203.exe (PID: 7492 cmdline:
"C:\Users\ user\Deskt op\Doc 1Z8 81A0804539 68203.exe" MD5: 51812B068C74B61DB320570D6D13EE07) - powershell.exe (PID: 7596 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\Des ktop\Doc 1 Z881A08045 3968203.ex e" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 7612 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - Doc 1Z881A080453968203.exe (PID: 7620 cmdline:
"C:\Users\ user\Deskt op\Doc 1Z8 81A0804539 68203.exe" MD5: 51812B068C74B61DB320570D6D13EE07) - Doc 1Z881A080453968203.exe (PID: 7628 cmdline:
"C:\Users\ user\Deskt op\Doc 1Z8 81A0804539 68203.exe" MD5: 51812B068C74B61DB320570D6D13EE07) - Doc 1Z881A080453968203.exe (PID: 7636 cmdline:
"C:\Users\ user\Deskt op\Doc 1Z8 81A0804539 68203.exe" MD5: 51812B068C74B61DB320570D6D13EE07) - Doc 1Z881A080453968203.exe (PID: 7644 cmdline:
"C:\Users\ user\Deskt op\Doc 1Z8 81A0804539 68203.exe" MD5: 51812B068C74B61DB320570D6D13EE07) - ShWVPkMdEfalHck.exe (PID: 1448 cmdline:
"C:\Progra m Files (x 86)\xIOtVl NOKTJJgUmr xRSjaUaTfe ifqxOizQOA JxzktpgFM\ ShWVPkMdEf alHck.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - cttune.exe (PID: 7380 cmdline:
"C:\Window s\SysWOW64 \cttune.ex e" MD5: E515AF722F75E1A5708B532FAA483333) - ShWVPkMdEfalHck.exe (PID: 4540 cmdline:
"C:\Progra m Files (x 86)\xIOtVl NOKTJJgUmr xRSjaUaTfe ifqxOizQOA JxzktpgFM\ ShWVPkMdEf alHck.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 3568 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 | ||
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 15 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 9 entries |
System Summary |
---|
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Timestamp: | 05/04/24-10:10:16.842546 |
SID: | 2855465 |
Source Port: | 49709 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-10:10:33.998564 |
SID: | 2855464 |
Source Port: | 49710 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-10:10:55.056211 |
SID: | 2855464 |
Source Port: | 49715 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-10:10:45.265920 |
SID: | 2855465 |
Source Port: | 49713 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-10:10:52.210291 |
SID: | 2855464 |
Source Port: | 49714 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-10:10:38.910872 |
SID: | 2855464 |
Source Port: | 49711 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | File source: | ||
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Source: | Joe Sandbox ML: |
Source: | Static PE information: |
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Source: | Binary string: | ||
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Source: | Code function: | 14_2_02F1B7A0 |
Source: | Code function: | 14_2_02F09480 | |
Source: | Code function: | 14_2_02F11D10 |
Networking |
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Source: | UDP traffic detected without corresponding DNS query: | ||
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Source: | HTTP traffic detected: | ||
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