MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e
SHA3-384 hash: fff16ab4e86e153934f6e1241fe9e1b6580cc7bc45cfb1bddaecde54bced3b317e9e988b78ddbbb78078ef91f35cf252
SHA1 hash: 6d5ab2f5dd90dddbd69ed329b9525937dbe9922c
MD5 hash: 7673c2450b644e9b74a4a00a083ce365
humanhash: solar-tennessee-fruit-double
File name:5Zz9KAHYHkXiaY8.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:809'984 bytes
First seen:2022-03-07 14:29:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 24576:p1kzf96HsxK5JZSgD9UQaQ5QP+NpqJUTn:pOJvUdhDu5OS+Np9T
TLSH T11005BF1835EB5039F83A8BF2CAC0EBE19F6EE221D4C974B554000E569605BBC8956DFF
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/247936/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
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/41fc63df-d10f-44c0-aaf8-8614867d0476
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/951859
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for submitted file
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 584357 Sample: 5Zz9KAHYHkXiaY8.exe Startdate: 07/03/2022 Architecture: WINDOWS Score: 100 31 www.pestasoft.com 2->31 33 www.jedidpress.com 2->33 35 2 other IPs or domains 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 8 other signatures 2->49 11 5Zz9KAHYHkXiaY8.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\5Zz9KAHYHkXiaY8.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 15 5Zz9KAHYHkXiaY8.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 37 stdeventos.com 187.84.225.50, 49780, 80 RedeHostInternetLtdaBR Brazil 18->37 39 www.stdeventos.com 18->39 41 www.mrcheckercc.online 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 explorer.exe 18->22         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 22->53 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-07 14:30:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 27 (77.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hfmgozexd5ew2j2phvctakmvi4qjmlwtmzzakc3uflxywttiu6ha._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:icun loader rat
Link:
https://tria.ge/reports/220307-rt5nzafdb9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
42501404e1555afc191debd5c2c5ecccb08835a67d0de5f7215fde9f686078a1
MD5 hash:
fdffccd125d9c21507f21d4953f5f4ea
SHA1 hash:
b314822f0837ab84541cc41ce78fdf6f094359a3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3cc70888-746b-4900-883b-6d3cd3867c9e/
Parent samples :
05b6c2741d33e6b3a06eb63ddfb99d41f35463761a1d36fef5b408c36bf45637
1ef7bd7eb5072a52e9e63dab1a6633413a19768ea84bf248868239b087f0900f
e649ef1ecf0e0daefe140fa78271435271c8d55607f8365ddef4d94b66bfdfdd
39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e
SH256 hash:
2dcb0bd050e1edf315e5811913683ccb8fb41f6678144372c678e95e8ed65783
MD5 hash:
ffb3975b36a9792453942be040b15fd0
SHA1 hash:
fe2ec56e9985bc864afea552a35e1d3500d188c8
Link:
https://www.unpac.me/results/3cc70888-746b-4900-883b-6d3cd3867c9e/
SH256 hash:
06fe8ae6230888ac4e175e9a7fa9f0a0fd7c78f247139955eb2f1ed4e4584545
MD5 hash:
219b22a02a666d5428b28b3211208c17
SHA1 hash:
b239b2b366dbda490f83cad6326502361c3c7cf2
Link:
https://www.unpac.me/results/3cc70888-746b-4900-883b-6d3cd3867c9e/
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/3cc70888-746b-4900-883b-6d3cd3867c9e/
SH256 hash:
39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e
MD5 hash:
7673c2450b644e9b74a4a00a083ce365
SHA1 hash:
6d5ab2f5dd90dddbd69ed329b9525937dbe9922c
Link:
https://www.unpac.me/results/3cc70888-746b-4900-883b-6d3cd3867c9e/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/39586764971f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e

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: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.

Malspam

Formbook

Executable exe 39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/247936/

Comments