MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de2d33fe728754190016e5ed66fe93fc6212884da68f52ace01205fea357ec22. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
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SHA256 hash: de2d33fe728754190016e5ed66fe93fc6212884da68f52ace01205fea357ec22
SHA3-384 hash: 0518bbd6956e8c54a073234209e4b1d0b0cd0c82c594dd59ad64ef00131896b07ab7d5ee43059334dd525492a22c2c61
SHA1 hash: f6662a481570f1cbfaf0b7e3d798d4cc78e14ea2
MD5 hash: 68b6beb98136f26d1a4ff3fcbb7f2ee5
humanhash: massachusetts-utah-illinois-diet
File name:document.exe
Download: download sample
Signature Formbook
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File size:519'680 bytes
First seen:2021-10-19 07:37:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:z3bQGf4GH3cn+brPQuxDUNov+VrRzUtwa8c2ixN:zr7MnkPQuRaRzwMc
Threatray 10'626 similar samples on MalwareBazaar
TLSH T1CBB4D00535509D5FC85E4F3A44345CB34B22AD63830AF243ADCB3EDE6E9E7864A2A357
Reporter ankit_anubhav
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/198408/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.17696.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616e75e59a5a1e91c5c58f24/reports/059d0f49-8b4d-42a8-97d5-0b039911f047/overview
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7a15210f-abc4-40a5-8bd5-182eb1d3fdf7
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/872889
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 505317 Sample: document.exe Startdate: 19/10/2021 Architecture: WINDOWS Score: 100 31 www.noutims.com 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 9 other signatures 2->45 11 document.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\document.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 15 document.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 meetwithcjg.com 15.197.142.173, 49836, 80 TANDEMUS United States 18->33 35 www.workshopbobbin.com 183.181.96.109, 49838, 80 SAKURA-CSAKURAInternetIncJP Japan 18->35 37 14 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Performs DNS queries to domains with low reputation 18->49 22 rundll32.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/de2d33fe728754190016e5ed66fe93fc6212884da68f52ace01205fea357ec22/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
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Status:
Malicious
First seen:
2021-10-19 07:38:15 UTC
AV detection:
9 of 45 (20.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3ywth7tsq5kbsaaw4xwwn7ut7rrbfccnu2hvflhacic75i2x5qra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2ac830fd4c5c4c3522b5cb9983edc13f2580b932875bc9daeb02633b8829fb3b
Formbook
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
Formbook
5fd22c8bf1e7e06ccaa6ebc23410086fe0e3bc30b1613cd6ee734f280c0d6979
Formbook
7024147e75938acd54b804df172c63b57c794e1980632c5f8190ae1e9d0da82a
Formbook
7c7e7d1ad3f8afd0ffcba163bac7c1df9ceb8202a96a61b30b697569e00051b0
Formbook
92c90d735148f7fd056e2d53bf44239f3fdab6b029e78d3ed6077d9c7f40aef2
Formbook
afb0dcb294330abe26a2e2611f36441607a878844a251bea8be3e9407e238ad8
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
db4d5bd36f923fdd47daf48ace971f47e9764d27a2f88241f09c754c042efc28
Formbook
+ 10'616 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:hue4 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211019-jge9jsgcdn/
Behaviour
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
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.millieandmaude.net/hue4/
Unpacked files
SH256 hash:
131906cecdeb468053b3d474fac25c947949e39cd5d5e9e0b32f6d4c829f397b
MD5 hash:
2607524bdf51e6d0a7447cbeb99e7a9d
SHA1 hash:
bb1b75daeb5fdd7159c5164847a670dfb8346e22
Detections:
win_formbook_g0
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win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/de0c9362-bd56-4b30-92a0-89a9014def69/
SH256 hash:
a681e410e4ccf23a080704e67a0398fe1be7b32317b60f834d92bb24c782d1bf
MD5 hash:
a7f83c694ce3c0e2b64d7a5f05fd2b0c
SHA1 hash:
be0aa06310d5fc2c6e06c698ba5f4c1fb2f5e4cd
Link:
https://www.unpac.me/results/de0c9362-bd56-4b30-92a0-89a9014def69/
SH256 hash:
7b4ba24781e21b310e2749bc2f7a80b9670a4198a54d26e42079a6a1c1be6ae7
MD5 hash:
7b77d210bf6b00fd8ee8187198852052
SHA1 hash:
7f78d6294a269349fc9a49ad3c8ccb3c3d2665b4
Link:
https://www.unpac.me/results/de0c9362-bd56-4b30-92a0-89a9014def69/
SH256 hash:
de2d33fe728754190016e5ed66fe93fc6212884da68f52ace01205fea357ec22
MD5 hash:
68b6beb98136f26d1a4ff3fcbb7f2ee5
SHA1 hash:
f6662a481570f1cbfaf0b7e3d798d4cc78e14ea2
Link:
https://www.unpac.me/results/de0c9362-bd56-4b30-92a0-89a9014def69/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/de2d33fe728754190016e5ed66fe93fc6212884da68f52ace01205fea357ec22

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
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Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
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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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
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.

  
Delivery method
Distributed via e-mail link
Cape
Cape
https://www.capesandbox.com/analysis/198408/

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