MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a43c9fb6ba3c066fc3c90c98240ac661d7458c08e9caeab886a88e80f4b70ba3. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
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SHA256 hash: a43c9fb6ba3c066fc3c90c98240ac661d7458c08e9caeab886a88e80f4b70ba3
SHA3-384 hash: 580ad3cc3bdc677ffe2cf17f0b93f0e6e527a01eb7a74e3126b9c7c3940d282e2ffc7d72527d874d997b988a7108856c
SHA1 hash: 6f53634a5a2c2b33de6fec77fdb4382d5a53b06f
MD5 hash: 974cc9c971f39f7105a36487c521f627
humanhash: hot-blossom-island-snake
File name:ob1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:795'648 bytes
First seen:2021-04-19 11:27:43 UTC
Last seen:2021-04-19 12:49:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'751 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 12288:6j8cltJBfc9BLy/fGtHSiukPcQgEzGoLKSL+p6CobFozRRRRRO7ICfLc:bSJhc9BzHnuk0Tol+3oORRRRRtCfLc
Threatray 4'578 similar samples on MalwareBazaar
TLSH EE058BD19E8ABA1EC02A7374701191FCC3A36D2246DDE3E72BC7FDDA97A394045906D2
Reporter TeamDreier
Tags:FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
betaling faktura 69845.xlsx
Verdict:
Malicious activity
Analysis date:
2021-04-19 11:16:54 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/9d4295a2-9310-4ff2-8d3a-28521a4d7667

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/138415/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.666.13172.2603.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/686691
Signature
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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: 392294 Sample: ob1.exe Startdate: 19/04/2021 Architecture: WINDOWS Score: 100 31 www.electronicsreycling.online 2->31 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Yara detected AntiVM3 2->43 45 5 other signatures 2->45 11 ob1.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\ob1.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 15 ob1.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 33 gabilan.net 162.241.30.119, 49739, 80 UNIFIEDLAYER-AS-1US United States 18->33 35 www.tiffany-michellebodywhipt.com 18->35 37 www.gabilan.net 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 rundll32.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a43c9fb6ba3c066fc3c90c98240ac661d7458c08e9caeab886a88e80f4b70ba3/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uq6j7nv2hqdg7q6jbsmcicwgmhluldai5hfovoegvchib5fxborq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
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8ac1fc19367861f3a749d801300f554148e36a0e8a4f4cce3c5d3e4de43e4279
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adcc2671f1168261ceace2da6f28a79e0b3bc2f774fac1d79f4628f494951d24
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ded8b59c294e753dda9510f0f4164d94d7a409592f60939e4912c9e9f0aeb841
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f51814c09f1be4842eacf33e683f36ed4182a5f19ce3ba905b90261d1d2489b1
Formbook
+ 4'568 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210419-91387e387e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.contactodirectoseguros.com/x0h/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a43c9fb6ba3c066fc3c90c98240ac661d7458c08e9caeab886a88e80f4b70ba3

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
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/138415/

Comments