MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 48f8e6c417e0fca7d5b237ac5142f4e27ac048d8292e9a831be9254b34e0124d. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 48f8e6c417e0fca7d5b237ac5142f4e27ac048d8292e9a831be9254b34e0124d
SHA3-384 hash: 44cd6b4a9b114349a117c5d24b34de2fe5db7468cdef80b6b34f58b7422837facd838a5a46cba5a15196c7ceeedc85e4
SHA1 hash: ba790e8ff44563bffbb3cd3cd4ce5c65674b1b52
MD5 hash: c9d29e2071fa129ceeabff93c460c37a
humanhash: emma-wolfram-don-blossom
File name:own.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:479'744 bytes
First seen:2020-07-30 06:12:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:n53F48TZFczazHjWIzXkamq0Astaeqqo7gfuWYDGUy:nI2HzHjW8M+wqG
Threatray 2'388 similar samples on MalwareBazaar
TLSH FCA48C34B9D3C474D57A427960780ADE66387A3E37018B6E33D64B5C9F422AB731B21E
Reporter oppimaniac
Tags:FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/35290/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Launching the default Windows debugger (dwwin.exe)
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Possible injection to a system process
Unauthorized injection to a system process
Deleting of the original file
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/403172
Signature
.NET source code contains very large array initializations
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
Sigma detected: Suspicious Svchost Process
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 253814 Sample: own.exe Startdate: 30/07/2020 Architecture: WINDOWS Score: 88 31 g.msn.com 2->31 33 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->33 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected FormBook 2->39 41 .NET source code contains very large array initializations 2->41 43 2 other signatures 2->43 11 own.exe 2 2->11         started        signatures3 process4 signatures5 51 Tries to detect virtualization through RDTSC time measurements 11->51 14 own.exe 11->14         started        17 WerFault.exe 23 9 11->17         started        process6 signatures7 53 Modifies the context of a thread in another process (thread injection) 14->53 55 Maps a DLL or memory area into another process 14->55 57 Sample uses process hollowing technique 14->57 59 Queues an APC in another process (thread injection) 14->59 19 explorer.exe 14->19 injected process8 dnsIp9 35 www.wanxingmuyejiaju.com 19->35 22 svchost.exe 19->22         started        25 autofmt.exe 19->25         started        process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 22->45 47 Maps a DLL or memory area into another process 22->47 49 Tries to detect virtualization through RDTSC time measurements 22->49 27 cmd.exe 1 22->27         started        process12 process13 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/48f8e6c417e0fca7d5b237ac5142f4e27ac048d8292e9a831be9254b34e0124d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-30 05:58:00 UTC
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jd4onrax4d6kpvnsg6wfcqxu4j5masgyfexjvay35esuwnhacjgq._file
Verdict:
malicious
Similar samples:
3beb95c4f83e5f7d1af897311a6cd1d8abfb04c656ca73d7f4c8db6ad6e5d150
Formbook
6f827b68129d30609057c2e6b36be05649fce91d6bc8ee3d3566ca5c6aba562b
Formbook
7c2b01523e8d8a1ea6d09a426ad2a8fb88ec84bb9d3d0c42743b86ab16bd54c7
Formbook
9b2c6f08cd9a4e3b144422de4d540290542ce50239f2c85697a036a461b25264
Formbook
9c0d3c463792d704909de3a04cd7a6d31f8094301e8e24950af31cdc5e9f2838
Formbook
b042e4bdfe19df2aa474fd5e2294aecc9a07d447c96466db7a7e20316d885634
Formbook
b57c9384280389b262d09cb4fa5b5465aadd4aaba2afb6d48c5d6e7c3f8d923e
Formbook
b9c1be5f81b9261b1bb68fb0f667a57721bd04b750427a9382844c42d18dba6e
Formbook
d3664113994262962936ebe74d0355986970def0cd0bcdcf088fe102047df9ba
Formbook
f1aa4ffcbf7f690cee6060e9167c395bffe594858bfcc2bdd772a0edf4a23721
Formbook
+ 2'378 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/200730-4anr3ypdca/
Behaviour
Modifies Internet Explorer settings
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Program crash
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Reads user/profile data of web browsers
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/48f8e6c417e0fca7d5b237ac5142f4e27ac048d8292e9a831be9254b34e0124d

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:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

Formbook

Executable exe 48f8e6c417e0fca7d5b237ac5142f4e27ac048d8292e9a831be9254b34e0124d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/420693/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/421780/
Cape
Cape
https://www.capesandbox.com/analysis/35290/

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