MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6402f4385282298774063f11374e0162643b5d2eaa42b5a5878755b7f97e9e24. 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


Intelligence 12 IOCs YARA 1 File information Comments

SHA256 hash: 6402f4385282298774063f11374e0162643b5d2eaa42b5a5878755b7f97e9e24
SHA3-384 hash: 61f6260230df1389935d179c4bf80cace0f534e0ce99353c603eecf83b2eff00a3aad04eba292c39d8fbac880810dc48
SHA1 hash: a03750d4ae37ee1118a0d4e734c118def7635919
MD5 hash: 0ae3a9b77fa3e9ab97fb5be28f64003f
humanhash: steak-fish-steak-three
File name:pdf proforma factura.exe
Download: download sample
Signature Formbook
File size:867'328 bytes
First seen:2021-10-20 17:08:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3ffe5a9a24da83fb277b548d938597c8 (5 x Formbook, 3 x RemcosRAT, 1 x BitRAT)
ssdeep 12288:rHPNFplQQTfQAEpHxdE3Jc9AYPeyqY99j9gqmfGVIJj7B:Lx+OkpHxdKJc4yp99j9gvwIJv
Threatray 8'972 similar samples on MalwareBazaar
TLSH T172057CB3ACC4C92FD03BCF388E87DF655966B866361F64475AC01B0C9E336913C2A599
File icon (PE):PE icon
dhash icon fedcbb4d750f4c4c (9 x Formbook, 5 x RemcosRAT, 2 x NetWire)
Reporter pr0xylife
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
233
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Modifying an executable file
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
keylogger
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
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: Execution from Suspicious Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 506492 Sample: pdf proforma factura.exe Startdate: 20/10/2021 Architecture: WINDOWS Score: 100 65 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->65 67 Found malware configuration 2->67 69 Malicious sample detected (through community Yara rule) 2->69 71 5 other signatures 2->71 10 pdf proforma factura.exe 1 16 2->10         started        process3 dnsIp4 55 cdn.discordapp.com 162.159.133.233, 443, 49756, 49757 CLOUDFLARENETUS United States 10->55 41 C:\Users\Public\Myqwph.exe, PE32 10->41 dropped 89 Writes to foreign memory regions 10->89 91 Allocates memory in foreign processes 10->91 93 Creates a thread in another existing process (thread injection) 10->93 95 Injects a PE file into a foreign processes 10->95 15 logagent.exe 10->15         started        file5 signatures6 process7 signatures8 97 Modifies the context of a thread in another process (thread injection) 15->97 99 Maps a DLL or memory area into another process 15->99 101 Sample uses process hollowing technique 15->101 103 2 other signatures 15->103 18 explorer.exe 4 2 15->18 injected process9 dnsIp10 43 www.hallforless.com 18->43 45 hallforless.com 34.102.136.180, 49839, 80 GOOGLEUS United States 18->45 47 192.168.2.1 unknown unknown 18->47 73 System process connects to network (likely due to code injection or exploit) 18->73 22 Myqwph.exe 14 18->22         started        26 Myqwph.exe 13 18->26         started        28 systray.exe 18->28         started        30 2 other processes 18->30 signatures11 process12 dnsIp13 49 cdn.discordapp.com 22->49 75 Writes to foreign memory regions 22->75 77 Allocates memory in foreign processes 22->77 79 Creates a thread in another existing process (thread injection) 22->79 32 DpiScaling.exe 22->32         started        51 162.159.129.233, 443, 49766, 49768 CLOUDFLARENETUS United States 26->51 53 cdn.discordapp.com 26->53 81 Injects a PE file into a foreign processes 26->81 35 mobsync.exe 26->35         started        83 Modifies the context of a thread in another process (thread injection) 28->83 85 Maps a DLL or memory area into another process 28->85 87 Tries to detect virtualization through RDTSC time measurements 28->87 37 cmd.exe 1 28->37         started        signatures14 process15 signatures16 57 Tries to detect virtualization through RDTSC time measurements 32->57 59 Modifies the context of a thread in another process (thread injection) 35->59 61 Maps a DLL or memory area into another process 35->61 63 Sample uses process hollowing technique 35->63 39 conhost.exe 37->39         started        process17
Threat name:
Win32.Downloader.FormBook
Status:
Malicious
First seen:
2021-10-20 17:09:04 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  3/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:n7ak persistence rat spyware stealer suricata trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.kmresults.com/n7ak/
Unpacked files
SH256 hash:
651d2f39c341c86341babbf45e367c1fe183f49348f3816f91920e08ed057d2a
MD5 hash:
100b966ad7ecd1ba763f069d4f1c27d6
SHA1 hash:
630ce76fda48fa229e41cf3e5b70f21af8288af0
Detections:
win_temple_loader_w0
SH256 hash:
6402f4385282298774063f11374e0162643b5d2eaa42b5a5878755b7f97e9e24
MD5 hash:
0ae3a9b77fa3e9ab97fb5be28f64003f
SHA1 hash:
a03750d4ae37ee1118a0d4e734c118def7635919
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information


The table below shows additional information about this malware sample such as delivery method and external references.

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