MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc721b47773f4107cfb81757a60adc56e56b1a81975c2579f35ba599079963c6. 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 4 File information Comments
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SHA256 hash: dc721b47773f4107cfb81757a60adc56e56b1a81975c2579f35ba599079963c6
SHA3-384 hash: d60849036e4e5ef72ddfb09e31e420abecbe713fd330b2a934924703b865eafbfa142fedfebac9b78f5b252f78fcab49
SHA1 hash: b56c0b307fea462fac8b9158b9ce43b3e2c14a65
MD5 hash: 9182dbdd3ba44d5e4dd9038d57600719
humanhash: yankee-bakerloo-mango-pip
File name:invoices.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:883'200 bytes
First seen:2021-07-13 07:22:25 UTC
Last seen:2021-07-14 07:50:34 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 12288:fZfQV8yjd0fya3b57s3sLhYjJOXRywOLphiL+pBDGljxXN5GnTOdU+CHpZsP8C:fZuSl3bdsKhYQXRywOFe+pBDET
Threatray 6'353 similar samples on MalwareBazaar
TLSH T1ED157C2C23FEA509F637FF709F90F3459F66667A9229914E2CC4020B5861D81FE76932
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoices.exe
Verdict:
Suspicious activity
Analysis date:
2021-07-13 07:28:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/323e7b2c-113e-4ff1-8d40-b52e1eadac6b

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/171267/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.925-1.UNOFFICIAL
Create hunting rule

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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a2e5f730-d387-45c7-bd2b-4edfae39cd76
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/815349
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 447760 Sample: invoices.exe Startdate: 13/07/2021 Architecture: WINDOWS Score: 100 31 clientconfig.passport.net 2->31 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Yara detected FormBook 2->43 45 4 other signatures 2->45 11 invoices.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\invoices.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 invoices.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 www.usasbe.com 18->33 35 www.sdrxsb.site 18->35 37 2 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 mstsc.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/dc721b47773f4107cfb81757a60adc56e56b1a81975c2579f35ba599079963c6/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-07-13 07:23:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
11 of 46 (23.91%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3rzbwr3xh5aqpt5yc5l2mcw4k3swwgubs5ock6ptloszsb4zmpda._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
1b6c5d0594eeb43cf5d85002be1d2dd0f0b6555ca114c73b62215c58cde3cb54
Formbook
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47c700a9a4cc5589c3acd273c4536952c5c0db7ad1f94408b4e6097d48fdb581
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4881e3adf30b0665cdbb38cb90ae0bf3a3395d2f9a4e19daec9c3d6beb2e915a
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744400d590042d779a25401879f9906b979e32bba3fac355a0ff2d5a00f4fcfc
Formbook
9dac57302e2261a1a3c6a665d3960525b27fb70a1fd6b1e135a3e72f11c6f3e6
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b35de004189f271fe754dd614e5fbbc299425f5aca9ebf1f935bf26696964853
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
+ 6'343 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/210713-hxmrns9aj6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.rafaelcristino.com/pm7s/
Gathering data
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/dc721b47773f4107cfb81757a60adc56e56b1a81975c2579f35ba599079963c6

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: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

rar cd4846dc3e04753ec1f744888ec69f2eab004ef1a200f5743a7da901a38e6cef

Formbook

Executable exe dc721b47773f4107cfb81757a60adc56e56b1a81975c2579f35ba599079963c6

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 cd4846dc3e04753ec1f744888ec69f2eab004ef1a200f5743a7da901a38e6cef
Cape
Cape
https://www.capesandbox.com/analysis/171267/

Comments