MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
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SHA256 hash: cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19
SHA3-384 hash: ea457a17b7b24745be9599cbd7f80779212f675420264ec2093bafd520ce5df14eb1cc8868c7e46f178cf01658834c03
SHA1 hash: 38984bb6cc0e96425cdfd3fb67592a9e4670b6ca
MD5 hash: 34675091ac031b8c43327239a1929dd0
humanhash: venus-enemy-vermont-vermont
File name:DHL_119040 documento de recibo de la compra,pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:151'040 bytes
First seen:2021-10-22 20:00:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:FHDS/i61Wdn6hpOoU1cymfbmmo6H/BA0rqb6tmb:FHDBNn6/1U6xymrfKgqb6
Threatray 10'762 similar samples on MalwareBazaar
TLSH T121E3F680C98255F0DBE9EA765F37C83197324E7E2521C09601F67EB33DAE927443B962
File icon (PE):PE icon
dhash icon 00c4e6beb8b2b608 (3 x Formbook, 2 x SnakeKeylogger, 1 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
381
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/199520/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a service
Creating a window
Connection attempt to an infection source
Sending a TCP request to an infection source
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Query of malicious DNS domain
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cobra obfuscated packed
Link:
https://www.filescan.io/uploads/61731880db358dd15ed60ae5/reports/19cab68b-a0fa-4a1f-92d6-b5c891324a4f/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:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9c3391a5-a208-4c58-947d-10797bdc8aed
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/875456
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
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
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 507889 Sample: DHL_119040 documento de rec... Startdate: 22/10/2021 Architecture: WINDOWS Score: 100 33 www.vehicaldashino.com 2->33 35 www.sddn57.xyz 2->35 37 2 other IPs or domains 2->37 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 11 other signatures 2->47 11 DHL_119040 documento de recibo de la compra,pdf.exe 15 5 2->11         started        signatures3 process4 dnsIp5 39 store2.gofile.io 31.14.69.10, 443, 49755 LINKER-ASFR Virgin Islands (BRITISH) 11->39 27 DHL_119040 documen...e la compra,pdf.exe, PE32 11->27 dropped 29 DHL_119040 documen...exe:Zone.Identifier, ASCII 11->29 dropped 31 DHL_119040 documen... compra,pdf.exe.log, ASCII 11->31 dropped 15 DHL_119040 documento de recibo de la compra,pdf.exe 11->15         started        file6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 18 explorer.exe 15->18 injected process9 process10 20 help.exe 18->20         started        signatures11 49 Self deletion via cmd delete 20->49 51 Modifies the context of a thread in another process (thread injection) 20->51 53 Maps a DLL or memory area into another process 20->53 55 Tries to detect virtualization through RDTSC time measurements 20->55 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-10-22 20:01:05 UTC
AV detection:
17 of 44 (38.64%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zpyddio35xl2d2hvwfmm23426omv7nhicxfo4rzd7q5lao4qbmmq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1
Formbook
030d67d113b2193c850c7ac4d993c571b478ce61d12b892a8feecc2938775d91
Formbook
098a32bfcd332f71fdb65cf704994c70cf6390110340c809ae2cc66bddfbde04
Formbook
35204f1850b1439ef9a8fd958d6c3045edae69378aa3593021795d0600fc5a01
Formbook
61a69b0eb00727462d5599153fb2acb617d15fcc2e9e4ec3270a5fca8837a3ba
Formbook
7a12f38cc2bd503f9667620f86315281e8319f9f2dca72aa19eb19ff6f3629a6
Formbook
936b41f8bcf1d1fef4e71b000e2e37c4cc2baf58b34ca848759d2a8de5b9b9aa
Formbook
bb8e1d48225b002a4da7d0c33051e7fc457e244ed610f536b87702439d978a46
Formbook
+ 10'752 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:b65i loader rat suricata
Link:
https://tria.ge/reports/211022-yrjgaadabj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.onewebuy.net/b65i/
Unpacked files
SH256 hash:
cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19
MD5 hash:
34675091ac031b8c43327239a1929dd0
SHA1 hash:
38984bb6cc0e96425cdfd3fb67592a9e4670b6ca
Link:
https://www.unpac.me/results/b8eb0fbb-6b99-4c2a-8c17-6f6399022380/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19

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

File information

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

Malspam

Formbook

Executable exe cbf031a1dbedd7a1e8f5b158cd6f9af3995fb4e815caee4723fc3ab03b900b19

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/199520/

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