MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83. 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: e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83
SHA3-384 hash: 615db3a0e0f15320b9d89288778574d30b6d32b3623683380d07f38814fbd7f42dd06eb95ef972fc20ef15c57f4a8072
SHA1 hash: e2a3b87e59dfa40ff913f827f33af5fd5254f0cd
MD5 hash: f459adc3c815cf09df333860a15012bb
humanhash: eight-social-mexico-december
File name:NEW PRODUCT INQUIRY.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:549'376 bytes
First seen:2020-08-19 11:24:56 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 12288:r2ruLxjlaqtqqlBmYqP8TocVhb3zDuhpppppppppppppppppppppp:LFjJYoTlFhbnu
Threatray 2'240 similar samples on MalwareBazaar
TLSH 2AC46B3521829024DB2542B2803D59D2F2297E0E7B97DE7E63DF233C5E2289B3765B1D
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

From: Lisa Lee<sales@chaumetbag.com>
Subject: URGENT ORDER REVIEW PLEASE
Attachment: NEW PRODUCT INQUIRY.Z (contains "NEW PRODUCT INQUIRY.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
102
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/48452/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a file
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/437692
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 271354 Sample: NEW PRODUCT INQUIRY.exe Startdate: 20/08/2020 Architecture: WINDOWS Score: 100 34 www.yofdyk.com 2->34 38 Malicious sample detected (through community Yara rule) 2->38 40 Yara detected FormBook 2->40 42 .NET source code contains very large array initializations 2->42 44 3 other signatures 2->44 11 NEW PRODUCT INQUIRY.exe 6 2->11         started        signatures3 process4 file5 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->28 dropped 30 C:\Users\user\...30EW PRODUCT INQUIRY.exe.log, ASCII 11->30 dropped 32 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 11->32 dropped 52 Writes to foreign memory regions 11->52 54 Allocates memory in foreign processes 11->54 56 Injects a PE file into a foreign processes 11->56 15 AddInProcess32.exe 11->15         started        signatures6 process7 signatures8 58 Modifies the context of a thread in another process (thread injection) 15->58 60 Maps a DLL or memory area into another process 15->60 62 Sample uses process hollowing technique 15->62 64 2 other signatures 15->64 18 explorer.exe 15->18 injected process9 dnsIp10 36 www.bzplp.loan 18->36 21 NETSTAT.EXE 18->21         started        process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-18 12:23:01 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4vecgsw3fneepe2iirto7giijo3xqvg6mz4cv6i6hbbaugmlj6bq._file
Verdict:
malicious
Similar samples:
0e7ba6c8acc0e3de5a31e050eb287daba683c992e12c4715730ef3ccf3bbf575
Formbook
3d8ff1b4492a541b44c03733b090c73fd992535d8c4e867abc0e6aeaf5b58b30
Formbook
4fd6cfb4c08338e8b3a6ec64118aa6ad90350e865e90365b5b700aa41908b984
Formbook
8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531
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9295ce88660ed117b7cfff0886232a51dc6492bf6100738957bf93fabdb74bb8
Formbook
b25e43fe3f6068eb13b79f8900dea897533005aee7e2139e6676b7cdc92cc588
Formbook
b3289e282e7c031fde98778bac0057bad5d933c85da0b43d95f177c6333fc3c2
Formbook
d05efc3d09d7c08668da10c09101815e0af2f3376a03512e959ca467835b9c26
Formbook
d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f
Formbook
e04b0836667f55bcc1778c62761c99af52cb5c42c14cef3962531512def2944b
Formbook
+ 2'230 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
agilenet rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200819-39znk1q262/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.yofdyk.com/gbr/
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/e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83

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

z 34679454648fba512cdd3655f06d4ec68dd305c097b7fcc968c0f6892dfefce9

Formbook

Executable exe e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83

(this sample)

  
Dropped by
MD5 c486d5bbec32f9ed92bd667526c94727
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48452/
  
Dropped by
SHA256 34679454648fba512cdd3655f06d4ec68dd305c097b7fcc968c0f6892dfefce9

Comments