MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
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SHA256 hash: a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161
SHA3-384 hash: 3d2b8745decc4c0e771395ef0f0cba7ef539bb95a3684a0b3306bae3f78dcb87cc9e5c44b6b4358b8f39b1e5d84623de
SHA1 hash: 347fd222a02f2a03f6e8846c2fda3abaaa88635c
MD5 hash: 43421aa34fa0c1cf231753fb548a3dd5
humanhash: oven-lamp-apart-blue
File name:Euro Bank Details.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:774'656 bytes
First seen:2022-02-24 06:32:16 UTC
Last seen:2022-02-24 14:34:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:L4+UA+sxaMtpUTxpR+ebK4fI3NDXJNL51zwuZwG4IVAFtObEJgsPYa:TUA+sxbbgpRa3lfCG9mG4
Threatray 13'983 similar samples on MalwareBazaar
TLSH T155F4CE1439BB30DEF063DAFE9EC8ECB19D6AF13B220E71BA10460F564B09945DE12576
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
212
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/244067/
Detection(s):
Sanesecurity.Rogue.0hr.20220224-0412.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Сreating synchronization primitives
Launching a process
Creating a file
Launching cmd.exe command interpreter
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/621726a23b743d74eee3b41b/reports/df6a33a4-c9de-4740-be0e-83af67c56665/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/edeac192-976c-4815-98d7-c1c697956255
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/945390
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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: 577869 Sample: Euro Bank Details.exe Startdate: 24/02/2022 Architecture: WINDOWS Score: 100 28 www.let-value.com 2->28 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 7 other signatures 2->50 10 Euro Bank Details.exe 3 2->10         started        signatures3 process4 file5 26 C:\Users\user\...uro Bank Details.exe.log, ASCII 10->26 dropped 13 RegSvcs.exe 10->13         started        process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 13->52 54 Maps a DLL or memory area into another process 13->54 56 Sample uses process hollowing technique 13->56 58 2 other signatures 13->58 16 cmmon32.exe 13->16         started        19 explorer.exe 13->19 injected process8 dnsIp9 36 Modifies the context of a thread in another process (thread injection) 16->36 38 Maps a DLL or memory area into another process 16->38 40 Tries to detect virtualization through RDTSC time measurements 16->40 22 cmd.exe 1 16->22         started        30 www.investorsbak.com 185.53.177.11, 49807, 80 TEAMINTERNET-ASDE Germany 19->30 32 www.jaysingpurchessacademy.com 188.114.97.7, 49809, 80 CLOUDFLARENETUS European Union 19->32 34 4 other IPs or domains 19->34 42 System process connects to network (likely due to code injection or exploit) 19->42 signatures10 process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-02-24 05:51:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vcvmjwqe6efuxe3kgeaf2pq7ykwflxixf4aaihqsji2sibuxufqq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
070264132f92fc5cb01521385e73bf36954d4093da205c59821e844abed68b5f
Formbook
25c2cea54ad6c1b93026807e6a34e7278f4dbdb85fdd635cbcc83e7f247e3f19
Formbook
3554e8a6c968467f681a97f7d0af60e7be69d515ee9b093b8be749811ec99c0b
Formbook
70c6fd4de902c8ccce31380698b123def84b4d209c8b824e1065349a5aee9de2
Formbook
96077c533e59e3b8cf38826e5e37e35f1f2eb44d356eae6575223158b565198e
Formbook
ab12ca2a034e07fbdd6c9d6c31270f52173cd8559e12aad0aea593cc460867cd
Formbook
c0b711533265ba0808d1f7a5fc9b0dd17e19187c9566d9908763d27aaddf023c
Formbook
d6b928a4292c14dee552691c4955bdff07d038470ec1419c88a4018fb06bd399
Formbook
e649ef1ecf0e0daefe140fa78271435271c8d55607f8365ddef4d94b66bfdfdd
Formbook
+ 13'973 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:yrcy loader rat suricata
Link:
https://tria.ge/reports/220224-ha7jsadddn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
c65a6af5fa8719686bd9fb55055ee825ec87b5e4adf7e58baa5676b45600ea7e
MD5 hash:
152b5fcf2580b07523200858789d1abc
SHA1 hash:
db90e619c454ed44bc97bd0e057d572e82c67cf7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c6f8ffbb-d95a-4f2e-864a-fcbd50aa42aa/
Parent samples :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 hash:
cbe0bbe25f0bb86c63cff1b98527398125d41542883ee450cdbbf9460f156c03
MD5 hash:
fa962631e99fac7fd3e452ef704c3fdf
SHA1 hash:
801564be798b770c5c2ea596218f6b226817e5b4
Link:
https://www.unpac.me/results/c6f8ffbb-d95a-4f2e-864a-fcbd50aa42aa/
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/c6f8ffbb-d95a-4f2e-864a-fcbd50aa42aa/
SH256 hash:
e55a3a59eaf4bdefcc32ee154fea3a40243d078d4888f7a665d7fba32fd3bc59
MD5 hash:
65cc3d33e52ae67675ca24ee8c990698
SHA1 hash:
63f6f699c45158c93eeb38c53418366aa7a2300d
Link:
https://www.unpac.me/results/c6f8ffbb-d95a-4f2e-864a-fcbd50aa42aa/
SH256 hash:
a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161
MD5 hash:
43421aa34fa0c1cf231753fb548a3dd5
SHA1 hash:
347fd222a02f2a03f6e8846c2fda3abaaa88635c
Link:
https://www.unpac.me/results/c6f8ffbb-d95a-4f2e-864a-fcbd50aa42aa/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe a8aac4da04f10b4b936a31005d3e1fc2ac55dd172f00041e124a35240697a161

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/244067/

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