MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 6ff25388a91cbed0a11467e592e39e34c54de49d61876a2a201554e67c5b8cb4. 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: 10
| SHA256 hash: | 6ff25388a91cbed0a11467e592e39e34c54de49d61876a2a201554e67c5b8cb4 |
|---|---|
| SHA3-384 hash: | 1df183e8d3a3f82d37284f292905e1633099dcacb9ecd67a24958a462f16e8fcfe5b506b8c8da1d67ae1a5dfbc766a3e |
| SHA1 hash: | f312a7a35af03f06d92f7c5426ac652911e58fad |
| MD5 hash: | adddf4b486e8fe90ab07d586012ff342 |
| humanhash: | nitrogen-vermont-grey-neptune |
| File name: | PO#4700055064_PDF.exe |
| Download: | download sample |
| Signature | FormBook |
| File size: | 422'912 bytes |
| First seen: | 2020-07-31 06:54:45 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 12288:lb/8fwV1cfdB5RlMqT8e3fPKOO4rXIlqu3hUdY:lb/8wV1Q5RSrWEOXI4u |
| Threatray | 5'105 similar samples on MalwareBazaar |
| TLSH | E294CF5CB0EA151AF51231BF9FF9819BCEAAF46F1283425B12B12587903DB4C6EC1E71 |
| Reporter |  abuse_ch |
| Tags: | exe FormBook |
abuse_ch
Malspam distributing FormBook:HELO: nytex.sg
Sending IP: 103.133.106.216
From: Nytex <Marketing@nytex.sg>
Subject: RE: Nytex Pte Ltd # NEW PO #RESUMING SERVICES
Attachment: PO4700055064_PDF.r00 (contains "PO#4700055064_PDF.exe")
Intelligence
File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a custom TCP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Benign windows process drops PE files
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected FormBook malware
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
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)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-07-31 06:56:11 UTC
AV detection:
22 of 28 (78.57%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 5'095 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
rat persistence spyware evasion trojan stealer family:formbook
Behaviour
Suspicious use of FindShellTrayWindow
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
System policy modification
Suspicious use of SendNotifyMessage
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads user/profile data of web browsers
Deletes itself
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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