MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3685a744940da41b0244d007646f33463c59774e8489e7d3f7cf3abc9c8e662. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
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SHA256 hash: f3685a744940da41b0244d007646f33463c59774e8489e7d3f7cf3abc9c8e662
SHA3-384 hash: b3ceff260caa29a3021a9015e5356851e1f9b23875166fb2e26962d607f64c52dddc8f1e2148ac31d8b529393b3aec80
SHA1 hash: d3f6e523ab8a966ceb5f345896cd2ed890baa6cd
MD5 hash: d24aa52d3f2d296ff28633ee761fc1b9
humanhash: coffee-cup-apart-north
File name:Descripciones de oferta de productos MACIILIAS SRL doc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:216'490 bytes
First seen:2021-05-25 06:14:44 UTC
Last seen:2021-05-25 07:09:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 3072:8QIURTXJSMtcsB4j/aJOlXvyeD3QA+xVZeLXdKbYMdFZZvD0AsbVazhodC+34FPk:8sBH42JwTD3Q7Vw450AsbV4e+FexzD
Threatray 5'398 similar samples on MalwareBazaar
TLSH 8B2412D7B0E090BBD5D905375AB3AF29E777C686241117230FB85F6F6660293A835283
Reporter lowmal3
Tags:FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
104
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/161617/
Detection(s):
PUA.Win.Trojan.Casino-141
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Sending a UDP request
Creating a file
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792099
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found 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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 424495 Sample: Descripciones de oferta de ... Startdate: 25/05/2021 Architecture: WINDOWS Score: 100 31 www.buttonsandchary.com 2->31 33 www.markashleycollins.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 6 other signatures 2->47 11 Descripciones de oferta de productos MACIILIAS SRL doc.exe 21 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\System.dll, PE32 11->29 dropped 57 Maps a DLL or memory area into another process 11->57 15 Descripciones de oferta de productos MACIILIAS SRL doc.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.countdown-yourspecialday.info 185.176.43.100, 49760, 80 ZETTA-ASBG Bulgaria 18->35 37 dreambuildarchitect.com 103.50.162.153, 49735, 80 PUBLIC-DOMAIN-REGISTRYUS India 18->37 39 22 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 mstsc.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f3685a744940da41b0244d007646f33463c59774e8489e7d3f7cf3abc9c8e662/
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-05-24 05:55:09 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6nufu5cjidnedmbejuahmrxtgrr4lf3u5bej47j7ptz2xsoi4zra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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18245cb19e63733176ad7ca573d8d92b9a8291d6e8a62dc6af6f1491381bf526
Formbook
5191f6a6fc1500632342d4820e8abd7c1d32c105f56399a2cece4e4db1fa77bb
Formbook
6421a877340afab7934556dfd4d8ce52f187df24aa621242e65f3ea14f07c541
Formbook
8bd8e7edfd64f242eec8ebeaf0a473152c0f52de8f0318f8bcacf98326e0405a
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975d26e2e3cbc36e78c184a98bff54686261c65bba363d93391076b6a248b486
Formbook
9998ff1d42d8af0fcc166bea36887eebf182e91d1816853d9f80e6cbbbaf9145
Formbook
b2c2371d92995eb349a4d6be53af3c42798af56b94f59adf1d765d2905fd5871
Formbook
b5c025f7696528fbc5b1649e93b4ccbafc2d1b9b51155626c9197d110edcba06
Formbook
bf6ae876108b5fec915d91bd36d3ccd22c8593be29412521c32a4b3f11a757f0
Formbook
fe5d8bb940112ba98d51c57496fa25e242d3f6e4b28b183bfe2ef3ec2c393e9e
Formbook
+ 5'388 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210525-98yzfv369e/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.mambomakaya.com/ftgq/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f3685a744940da41b0244d007646f33463c59774e8489e7d3f7cf3abc9c8e662

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

Formbook

Executable exe f3685a744940da41b0244d007646f33463c59774e8489e7d3f7cf3abc9c8e662

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/161617/

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