MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7c73899c0587f768cfbb871b9305c7b47e85b39c330c5f82fd79345ee914d3d6. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7c73899c0587f768cfbb871b9305c7b47e85b39c330c5f82fd79345ee914d3d6
SHA3-384 hash: 2331974a25d076eff79e7ef02cc2286ac9f817030f8e629933f6f012f4bcb255d5c50d59179a00834b566f8947859c8c
SHA1 hash: 8f20468d87e252c46d76e862724f63d6e86db5dd
MD5 hash: da826d3a3169edc4f9f38fad273db8f7
humanhash: april-august-early-black
File name:NEW ORDER #56787654567890.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:449'536 bytes
First seen:2020-08-05 07:58:44 UTC
Last seen:2020-08-12 10:17:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:sHAgbCa8sGQTPDWnxnIrjcve/+6nA6bW1VoSgOAAGOv:sHX8kTPDWnNI0vy1tW1VnGOv
Threatray 5'368 similar samples on MalwareBazaar
TLSH 27A46C353983C039C5690A78E4395BE2BA79367A3B048A5EB39B134C5F4346B7B1712F
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: projectexports.com
Sending IP: 212.83.46.93
From: Amy Chang<info@projectexports.com>
Subject: Ref: Order Acknowledgement
Attachment: NEW ORDER 56787654567890.zip (contains "NEW ORDER #56787654567890.exe")

Intelligence

File Origin
# of uploads :
3
# of downloads :
69
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39139/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410451
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257475 Sample: NEW ORDER #56787654567890.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 33 Malicious sample detected (through community Yara rule) 2->33 35 Yara detected FormBook 2->35 37 .NET source code contains very large array initializations 2->37 39 3 other signatures 2->39 10 NEW ORDER #56787654567890.exe 4 2->10         started        process3 file4 27 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->27 dropped 29 C:\...29EW ORDER #56787654567890.exe.log, ASCII 10->29 dropped 47 Writes to foreign memory regions 10->47 49 Allocates memory in foreign processes 10->49 51 Injects a PE file into a foreign processes 10->51 14 AddInProcess32.exe 10->14         started        signatures5 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 2 other signatures 14->59 17 explorer.exe 14->17 injected process8 dnsIp9 31 www.cme.ink 17->31 20 help.exe 17->20         started        process10 signatures11 41 Modifies the context of a thread in another process (thread injection) 20->41 43 Maps a DLL or memory area into another process 20->43 45 Tries to detect virtualization through RDTSC time measurements 20->45 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7c73899c0587f768cfbb871b9305c7b47e85b39c330c5f82fd79345ee914d3d6/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 00:51:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=przythafq73wrt53q4nzgbohwr7ilm44gmgf7ax5pe2f52iu2pla._file
Verdict:
malicious
Similar samples:
0e7ba6c8acc0e3de5a31e050eb287daba683c992e12c4715730ef3ccf3bbf575
Formbook
1be61c2f6e006dc35f4d81b2797d967d2a4ff04f854679d334abf13ceec8c508
Formbook
226d6cd50322ceae809181841a430f14ec5499f4fdad7f51e622c772c80d7351
Formbook
3628120506e72e0e92d1bbd4e6066a8297340d3f3aad66ced5bbb5881e4cff1e
Formbook
3df6c5354d1899b7249078b6aec00872710092c2328c0a3e20c79409f42adad4
Formbook
44703eacf8321a8fd05283f755a781a7cb17a55961159ab28d570c2196a79eb7
Formbook
50a183b6130552c9a7613ec0f2d81eba5731d4166e92d5249c2ab81e32d4026d
Formbook
72c019880ad2656f877ae76590ac447287c3ce5805e91097316fdc1e5b6645f2
Formbook
8c3ab3dfe110988d790808121453336342297777bdac96a10d317bab2b0de2c6
Formbook
b1ab330d8407adbc0731fd66b869bca53515ccf732d1ad498515e5e04f993de4
Formbook
+ 5'358 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat family:formbook
Link:
https://tria.ge/reports/200805-x5f71b4496/
Behaviour
Formbook family
Formbook Payload
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/7c73899c0587f768cfbb871b9305c7b47e85b39c330c5f82fd79345ee914d3d6

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.

Malspam

Formbook

zip 2536a7df0c427524ae5a814efa3382dfcc7c352e63890b5ee6e29df96b2bec83

Formbook

Executable exe 7c73899c0587f768cfbb871b9305c7b47e85b39c330c5f82fd79345ee914d3d6

(this sample)

  
Dropped by
MD5 e32948f08e897f1a606ec454d044eae3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39139/
  
Dropped by
SHA256 2536a7df0c427524ae5a814efa3382dfcc7c352e63890b5ee6e29df96b2bec83

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