MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfd40ed997b5ef2325ed495729f5b24e599712f733b8954596e626315df1e392. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dfd40ed997b5ef2325ed495729f5b24e599712f733b8954596e626315df1e392
SHA3-384 hash: 7960d5c4a55406221d533a8e1385e20b1d47b88644917987f5e52e99b2020cf4413c04bd89062df928e01d66c68a7462
SHA1 hash: 1ceff9a4e7e651ecef2fd3048c8b0bbd7122123e
MD5 hash: a2dd3b503afc0c187068525e9ecf8969
humanhash: delta-winner-kentucky-robert
File name:Tax payment invoice - Wd, November 17, 2021,pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:996'352 bytes
First seen:2021-11-17 01:52:19 UTC
Last seen:2021-11-17 11:45:43 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 12288:5CP1MhCcfZ/2Yp4XOjC1W4gXUTSNjJ0OkiZEoafCKqS2zG9+aw9cNq0p2W++uhQM:Qk/2Yp4eWLMUTOjlkwEJpqjZqNAh
Threatray 11'434 similar samples on MalwareBazaar
TLSH T17825BE45AB904B41CC7D47F4213A8D1403BB7EAAA5B9E60E2ECA71E63BF33D30562547
File icon (PE):PE icon
dhash icon d0c0ecccd4ccc4d4 (9 x AgentTesla, 8 x SnakeKeylogger, 3 x Formbook)
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
3
# of downloads :
150
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Tax payment invoice - Wd, November 17, 2021,pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-11-17 05:29:41 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/fa6c689d-e768-4bec-b755-6213e9181669

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/206676/
Detection(s):
SecuriteInfo.com.Variant.Strictor.66606.24856.30357.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Launching the process to change network settings
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6194607f43e8f62b66963ca8/reports/335dde66-e326-4261-a9de-5bb9a994ae52/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/3e16946d-e60a-4cf2-afcb-099f99b043b1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/890877
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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
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 domain / URL
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 523350 Sample: Tax payment invoice - Wd, N... Startdate: 17/11/2021 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Multi AV Scanner detection for domain / URL 2->41 43 Found malware configuration 2->43 45 9 other signatures 2->45 10 Tax payment invoice - Wd, November 17, 2021,pdf.exe 3 2->10         started        process3 signatures4 55 Injects a PE file into a foreign processes 10->55 13 Tax payment invoice - Wd, November 17, 2021,pdf.exe 10->13         started        process5 signatures6 57 Modifies the context of a thread in another process (thread injection) 13->57 59 Maps a DLL or memory area into another process 13->59 61 Sample uses process hollowing technique 13->61 63 Queues an APC in another process (thread injection) 13->63 16 explorer.exe 13->16 injected process7 dnsIp8 27 www.lasikeyesurgerysclinicusa.com 185.53.179.90, 49790, 80 TEAMINTERNET-ASDE Germany 16->27 29 www.chitrakootaschool.com 162.215.226.4, 49760, 80 PUBLIC-DOMAIN-REGISTRYUS United States 16->29 31 9 other IPs or domains 16->31 33 System process connects to network (likely due to code injection or exploit) 16->33 35 Performs DNS queries to domains with low reputation 16->35 37 Uses netsh to modify the Windows network and firewall settings 16->37 20 netsh.exe 16->20         started        signatures9 process10 signatures11 47 Self deletion via cmd delete 20->47 49 Modifies the context of a thread in another process (thread injection) 20->49 51 Maps a DLL or memory area into another process 20->51 53 Tries to detect virtualization through RDTSC time measurements 20->53 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dfd40ed997b5ef2325ed495729f5b24e599712f733b8954596e626315df1e392/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-17 01:53:05 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=37ka5wmxwxxsgjpnjflst5nsjzmzoexxgo4jkrmw4ytdcxpr4oja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0d83906aa1c84a83028cd12f8ef9582a260f94e56c4254cb35735b98d7266b8e
Formbook
514772a7cf47826f748fcb6afe32458e89f1c9405162870eb208f7f54038d19d
Formbook
73074d31d76508707823817fd9a27010fb5f049ff255f991d034bd4bcf917d2e
Formbook
7a2c677533d0dfa9104ae8ff221f1933651349669fef6f26c957cb28199a96d6
Formbook
82adc1ae5adcf8277a595f34021ff3724d380c87a2b03477ef7aa7504b2c6b77
Formbook
973489958412d5278a51536aac60517969126519f59677ec9b2917c727ac832a
Formbook
9f32e72b1695726ee2c6d97c59fde0253f9193ae389efa65ce98869198419702
Formbook
+ 11'424 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:e3rs loader rat suricata
Link:
https://tria.ge/reports/211117-cazlaaddem/
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
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.0l0.xyz/e3rs/
Unpacked files
SH256 hash:
a928ca4ee461217a58624aaa31afe014a554803e8f61b48efdf1fb3eeaf987b5
MD5 hash:
40a919e7c079a47e5b5f325dfa022625
SHA1 hash:
09d8acf001a7b0766174176e3e0354596a87db83
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3503746a-3432-430e-9f0b-6e75626017aa/
Parent samples :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 hash:
f9bb7d83e53990b0ed712384d5c79d2b2d31e7bba8b5233d5d9d71021de59a22
MD5 hash:
b8e223d6c46062533a9d70c0fa83cb17
SHA1 hash:
960a99381c4d7a2dba2f96f6a4784f27dfbbb859
Link:
https://www.unpac.me/results/3503746a-3432-430e-9f0b-6e75626017aa/
SH256 hash:
dcfaf00473254f461fec157b1a62171e7bf396bd551f3c4b4a60f916cee61f76
MD5 hash:
2719de83857bf61535679e6b71701f65
SHA1 hash:
2b4570d43812c84778a9d91d8c52efc8d0353d52
Link:
https://www.unpac.me/results/3503746a-3432-430e-9f0b-6e75626017aa/
SH256 hash:
86fe170cc6dd3a576807c1192a06ead68bf210f9ccd14f1a81d4f44c2dbcc25f
MD5 hash:
bf5c170790a9378101dbc312303925e3
SHA1 hash:
bddaf21c02ba5cec7c4dfd1b1f289e23714a8ba8
Link:
https://www.unpac.me/results/3503746a-3432-430e-9f0b-6e75626017aa/
SH256 hash:
dfd40ed997b5ef2325ed495729f5b24e599712f733b8954596e626315df1e392
MD5 hash:
a2dd3b503afc0c187068525e9ecf8969
SHA1 hash:
1ceff9a4e7e651ecef2fd3048c8b0bbd7122123e
Link:
https://www.unpac.me/results/3503746a-3432-430e-9f0b-6e75626017aa/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/dfd40ed997b5/report/overview.html
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/dfd40ed997b5ef2325ed495729f5b24e599712f733b8954596e626315df1e392

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:pe_imphash
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/206676/

Comments