MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81da76220fb0ae253e2cb1708b5b69da345ed3f69fca6d5bda7a0f59470196fe. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81da76220fb0ae253e2cb1708b5b69da345ed3f69fca6d5bda7a0f59470196fe
SHA3-384 hash: 0322ea0fbb69da9919ad36d1ceaa02fcee6392f0097ec3b61875d9fd51d52b25a262ef969880cb181ca3cd05da627c51
SHA1 hash: 07da86cf58a0ed8cb06f4f5a1c64d4a376aa0c4b
MD5 hash: 17da7e0d12fbfd1c14aafae7c0b41e33
humanhash: eight-pizza-connecticut-table
File name:triage_dropped_file
Download: download sample
Signature Formbook
Create hunting rule
File size:1'175'040 bytes
First seen:2021-06-07 15:30:33 UTC
Last seen:2021-06-07 16:37:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:MwS5NUVYtXiZb4JewHIj620aSnxt3NmqFX8xfIDRZ6wjFBUAC9IQG:gUYtXiZsHIj6J9LdmqFX8uv6yFqV
Threatray 5'654 similar samples on MalwareBazaar
TLSH F545012233446B6AE939A3B55051401293F6ED0BE712C65E7DE9B2DF053AF028772B73
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
271
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
triage_dropped_file
Verdict:
Suspicious activity
Analysis date:
2021-06-07 15:40:01 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2bb6aaf0-1f1e-42a9-a603-cc1080ca6b28

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/165074/
Detection(s):
PUA.Win.Packer.LyWgkx-2
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/798216
Signature
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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: 430610 Sample: triage_dropped_file Startdate: 07/06/2021 Architecture: WINDOWS Score: 100 33 clientconfig.passport.net 2->33 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Yara detected AntiVM3 2->45 47 5 other signatures 2->47 11 triage_dropped_file.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\...\triage_dropped_file.exe.log, ASCII 11->31 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 15 triage_dropped_file.exe 11->15         started        18 triage_dropped_file.exe 11->18         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 20 explorer.exe 3 15->20 injected process9 dnsIp10 35 www.taxes-info.com 107.151.118.54, 49719, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK United States 20->35 37 shops.myshopify.com 23.227.38.74, 49725, 80 CLOUDFLARENETUS Canada 20->37 39 3 other IPs or domains 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 raserver.exe 20->24         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 24->51 53 Maps a DLL or memory area into another process 24->53 55 Tries to detect virtualization through RDTSC time measurements 24->55 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81da76220fb0ae253e2cb1708b5b69da345ed3f69fca6d5bda7a0f59470196fe/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-06-07 15:31:10 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhnhmiqpwcxckprmwfyiww3j3i2f5u7wt7fg2w62pihvsrybs37a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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219e1bcb43db44538c443e303f0f8849bc44382e3ab6575f4419df311e55dbc7
Formbook
5e681acaddd90aaecc4edeb8a2fa514475a9ecec9458038d4d9e880a963b126f
Formbook
74038c5bbdbded24e577d6c081d88febe59735546d902323a310e2e9d3f66677
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90d238a1c183586c60ffb6c1fb4786950483080240feca7fbf6d99ab98c64a6b
Formbook
a2e99d0aabd8f0ad83b885eccf313563526a58b2da435bf34dad29294c712efe
Formbook
ce84812d0bb4086a806eb6bd6bda53c0656dd74569b1c40251d0ee1f84852460
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
d4c16c1a6aff7397ae843c9be4450185d6d6ebe8e5fbc544a5b355fb41b2a49d
Formbook
e8baf97ad51faed006287d1f01f921df0f677d4f056d35697158d30aa24ace9b
Formbook
f6b1a22c0cfc0c363bb163b7bd3236ee1dac2995a3511a6a941b7a7af656ba25
Formbook
+ 5'644 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210607-f2phm2r4lx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.skindulgenceatl.com/lth/
Unpacked files
SH256 hash:
34e69e90b7cb6121c3f93911f21dfb00491ea5d5bb79bfce4902d04f72c24184
MD5 hash:
b6b086a0ab13f3feb9ee8c846d230e5d
SHA1 hash:
dd8e1b816f3e7d9dcfa6eddc20a27fe0fbed478a
Link:
https://www.unpac.me/results/c7f02fc4-2529-4e18-8267-49eb3afbac8e/
SH256 hash:
81da76220fb0ae253e2cb1708b5b69da345ed3f69fca6d5bda7a0f59470196fe
MD5 hash:
17da7e0d12fbfd1c14aafae7c0b41e33
SHA1 hash:
07da86cf58a0ed8cb06f4f5a1c64d4a376aa0c4b
Link:
https://www.unpac.me/results/c7f02fc4-2529-4e18-8267-49eb3afbac8e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/81da76220fb0ae253e2cb1708b5b69da345ed3f69fca6d5bda7a0f59470196fe

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.

Cape
Cape
https://www.capesandbox.com/analysis/165074/

Comments