MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8dc4c1a88f19df4a3731991e632688147b6132bcb6cffa2dfbef8ee081c6ddae. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
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SHA256 hash: 8dc4c1a88f19df4a3731991e632688147b6132bcb6cffa2dfbef8ee081c6ddae
SHA3-384 hash: 6bea0f47925aa1b29a3f30f6655f5d95e526357cee728a861f3f4479b3bd41454c07a60cd43a170f13f26a852945e710
SHA1 hash: 83dc32633108d309f6b6b50a42dc102e7375f54c
MD5 hash: 457b22da77d4db093a31dd80a4b8963f
humanhash: cat-hamper-edward-foxtrot
File name:457b22da_by_Libranalysis
Download: download sample
Signature Formbook
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File size:973'824 bytes
First seen:2021-05-12 10:02:40 UTC
Last seen:2021-05-12 10:52:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:0Fu7fEF8VAJUFZ+MEEcg1B3DBp3LQySL683Olkck:oKeco9gXdBs681c
Threatray 5'107 similar samples on MalwareBazaar
TLSH 42253545211721D9CCA2A63CA2E45B341E968FF7022E452E21C6733DBA79443FDFD29D
Reporter Libranalysis
Tags:FormBook


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Libranalysis
Uploaded as part of the sample sharing project

Intelligence

File Origin
# of uploads :
2
# of downloads :
130
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.CYQ.genEldorado.3390.1410.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/779721
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected unpacking (changes PE section rights)
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 412121 Sample: 457b22da_by_Libranalysis Startdate: 12/05/2021 Architecture: WINDOWS Score: 100 31 www.home-inland.com 2->31 33 www.boostcoachingonline.com 2->33 35 2 other IPs or domains 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 11 457b22da_by_Libranalysis.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\...\457b22da_by_Libranalysis.exe.log, ASCII 11->29 dropped 61 Detected unpacking (changes PE section rights) 11->61 63 Tries to detect virtualization through RDTSC time measurements 11->63 65 Injects a PE file into a foreign processes 11->65 67 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->67 15 457b22da_by_Libranalysis.exe 11->15         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 Queues an APC in another process (thread injection) 15->75 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.thepocket-onlinelesson.xyz 202.210.8.86, 49730, 80 VECTANTARTERIANetworksCorporationJP Japan 18->37 39 rogegalmish.com 192.232.222.43, 49739, 80 UNIFIEDLAYER-AS-1US United States 18->39 41 12 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 53 Performs DNS queries to domains with low reputation 18->53 22 rundll32.exe 18->22         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/8dc4c1a88f19df4a3731991e632688147b6132bcb6cffa2dfbef8ee081c6ddae/
Threat name:
Win32.Trojan.Wacatac
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Status:
Malicious
First seen:
2021-05-12 10:03:18 UTC
AV detection:
15 of 47 (31.91%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Formbook
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Formbook
+ 5'097 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210512-kryxesb7kx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.rogegalmish.com/a8si/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.49
Link:
https://yomi.yoroi.company/submissions/8dc4c1a88f19df4a3731991e632688147b6132bcb6cffa2dfbef8ee081c6ddae

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_InTheFu
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Web download

Formbook

Executable exe 8dc4c1a88f19df4a3731991e632688147b6132bcb6cffa2dfbef8ee081c6ddae

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1225004/
  
Delivery method
Distributed via web download

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