MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b3b51bb4c984b8c02326334c810cd98e60506e2fda957a542b75ed8886bdc96f. 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: 12
| SHA256 hash: | b3b51bb4c984b8c02326334c810cd98e60506e2fda957a542b75ed8886bdc96f |
|---|---|
| SHA3-384 hash: | fce8f0fb48c17b393c17cebd2ce0fe67ebf5d1f260956fee7c8601c1de1b0797f142bb79f92b8f61e5bb86d5ddd32cef |
| SHA1 hash: | 222b88b76b5b69c389869820d07e0d8ef4c9711c |
| MD5 hash: | 7a3bd2e763faafe5632c8924b2e7157b |
| humanhash: | nineteen-nuts-bacon-oranges |
| File name: | WjFHN.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 182'784 bytes |
| First seen: | 2022-07-19 10:32:47 UTC |
| Last seen: | 2022-07-22 11:04:40 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| ssdeep | 3072:gIMxb5byRY7chWHqEVJQImCv1IXiSRuxfFU7qm7roBwAI:yxb5+RacPEVJggIXpRuxUqmw |
| TLSH | T19404AE32E742C030E3B242F5F66D1B7B483E2D343254A0AAE3E11A956FE55E5B46931F |
| Reporter |  pr0xylife |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
287
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
formbook overlay packed
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2022-07-19 10:33:06 UTC
File Type:
PE (Exe)
AV detection:
24 of 26 (92.31%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
n/a
Score:
10/10
Tags:
suricata
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
b3b51bb4c984b8c02326334c810cd98e60506e2fda957a542b75ed8886bdc96f
MD5 hash:
7a3bd2e763faafe5632c8924b2e7157b
SHA1 hash:
222b88b76b5b69c389869820d07e0d8ef4c9711c
Detections:
win_formbook_g0
win_formbook_auto
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| Rule name: | malware_Formbook_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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