MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 6cc43dcf0639d2b657784294b64c28b81daa90b4385e027a81015cc81f664953. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
FormBook
Vendor detections: 9
| SHA256 hash: | 6cc43dcf0639d2b657784294b64c28b81daa90b4385e027a81015cc81f664953 |
|---|---|
| SHA3-384 hash: | 0ab408bcbf88bcdb20fe36704d7fb3a5b764231ad907fe6ffd0122b9cf451378c98fad4bf30f65338c63da6d4479c307 |
| SHA1 hash: | 35236a7bf6c6e310fd92df38b11d9487d5f74996 |
| MD5 hash: | 04aa2b4e2a24ea561b3d8c193c3fff2a |
| humanhash: | alabama-moon-mississippi-lemon |
| File name: | Document.exe |
| Download: | download sample |
| Signature | FormBook |
| File size: | 426'496 bytes |
| First seen: | 2020-08-06 06:24:35 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:4P3Sxffs8YvPFvE3jcdFSDcixAcns5TrTsJgrpiA:LNwq6i9s5BQA |
| Threatray | 3'863 similar samples on MalwareBazaar |
| TLSH | 4594E018339DAB66D5FDABF8825C388043F97E27ED11E3145E8170F62777B908660A63 |
| Reporter |  abuse_ch |
| Tags: | exe FormBook |
abuse_ch
Malspam distributing FormBook:HELO: whoismail.net
Sending IP: 211.115.64.85
From: 이귀자 <account@ridgidkorea.com>
Reply-To: 이귀자 <account@ridgidkorea.com>
Subject: Outstanding payment
Attachment: Document.lzh (contains "Document.exe")
Intelligence
File Origin
# of uploads :
1
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Detected FormBook malware
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-08-06 06:26:08 UTC
AV detection:
22 of 27 (81.48%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 3'853 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
rat spyware evasion trojan persistence stealer family:formbook
Behaviour
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of SendNotifyMessage
Modifies Internet Explorer settings
Gathers network information
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
System policy modification
Creates scheduled task(s)
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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