MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d. 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 8 File information Comments
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SHA256 hash: 82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d
SHA3-384 hash: cec5fc966a8547f00f769cdbcf535a544fb2a4aabca4e2c7dda6fd04425b3eeedfe3e92a81c19280cc97674157a74a14
SHA1 hash: 795c348b71ef960c93d67c749f658bf68628eff9
MD5 hash: ed638c860f727bb53e05d7738c8cd6c4
humanhash: mirror-helium-fix-may
File name:file
Download: download sample
Signature Formbook
Create hunting rule
File size:277'903 bytes
First seen:2023-02-28 22:03:50 UTC
Last seen:2023-02-28 23:34:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:PYa6KRh3te6ehdGdtvtE0tpcupf7gQcnBqg7fU2:PYMRpt0dGdtvtEgXUBqwU2
Threatray 2'041 similar samples on MalwareBazaar
TLSH T13F4413AC6BE4C597C8A70C761D3A0B678EA5A51120A1371B6F705F9CBDB2B40CD0B762
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter jstrosch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
201
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-02-28 22:06:13 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/71b14559-09de-421e-a9f5-23bd9f7b93c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/370719/
Detection(s):
SecuriteInfo.com.Trojan.Siggen19.58932.26152.30796.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
83%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63fe7a5893921fa042361117/reports/6d0ed58b-79bf-4730-b937-ee2a6475c3f0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b6fe9835-df49-41ae-a450-c3d09d768fcc
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1184609
Signature
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 817459 Sample: file.exe Startdate: 28/02/2023 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 2 other signatures 2->41 9 file.exe 19 2->9         started        process3 file4 27 C:\Users\user\AppData\Local\...\rzmgixqf.exe, PE32 9->27 dropped 12 rzmgixqf.exe 1 9->12         started        process5 signatures6 55 Detected unpacking (changes PE section rights) 12->55 57 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 12->57 59 Maps a DLL or memory area into another process 12->59 15 rzmgixqf.exe 12->15         started        18 conhost.exe 12->18         started        process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 20 explorer.exe 2 6 15->20 injected process9 dnsIp10 29 seolutions.xyz 192.254.186.37, 49706, 49707, 49708 UNIFIEDLAYER-AS-1US United States 20->29 31 parkhomenko-zinaida.ru 185.215.4.36, 49718, 49719, 80 TVHORADADAES Denmark 20->31 33 10 other IPs or domains 20->33 43 System process connects to network (likely due to code injection or exploit) 20->43 45 Performs DNS queries to domains with low reputation 20->45 24 wlanext.exe 13 20->24         started        signatures11 process12 signatures13 47 Tries to steal Mail credentials (via file / registry access) 24->47 49 Tries to harvest and steal browser information (history, passwords, etc) 24->49 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
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d/
Threat name:
Win32.Trojan.Nsisx
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Status:
Malicious
First seen:
2023-02-25 20:51:59 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
25 of 39 (64.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qk5vzidvva62trcldkjbjktvsc7zslmcaybywtz63vv5qiypszwq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
628aa31e938f6407d365b1c833953f4d5b696c08c55b2b9905e2ab6dd724039b
Formbook
79ae6681fe6fdf1d7810a3bf37811b7c49f706ca0f4c04ab719633f924f727ad
Formbook
8aa4a5feee91f2caa993c9624153ee2ecbe97098fc7470a5103c408376b2a12a
Formbook
a21c6c623959c4995842ace85f7f5a7e3751c4930d28ebad92c7a737a7f8cfb8
Formbook
a3a3e10ea96961c3e5cc533be186a83f18fea89a5beb3074b04f4ee402c5f85f
Formbook
afbccae6537d0602edbc99ef03ec8b89ec23df241079f949c0b8a0aa6f9aa8f0
Formbook
c03d796c8b75c36e92aa53d1fb21d89fb0fc6aa57df540ca0074c43661a6cec0
Formbook
c40dc41488efa6a5e4cb29e69880ad288f6d5a0af69522818239f5410ab807d7
Formbook
+ 2'031 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/230228-1yxzcsch8z/
Behaviour
Modifies Internet Explorer settings
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
e3baf7432a83f53b238c27e8fbab2ae1af9145b9287cb852a3c2dd24e03a3227
MD5 hash:
73d2373b1fe3007895659e8a71fdcf7f
SHA1 hash:
71bf6865f7103d03e6aa9f1028456ad6556b333f
Link:
https://www.unpac.me/results/9b6eba02-de84-4d21-b2da-e5f564a021a6/
SH256 hash:
82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d
MD5 hash:
ed638c860f727bb53e05d7738c8cd6c4
SHA1 hash:
795c348b71ef960c93d67c749f658bf68628eff9
Link:
https://www.unpac.me/results/9b6eba02-de84-4d21-b2da-e5f564a021a6/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/82bb5ca075a8/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
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Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe 82bb5ca075a83da9c44b1a9214aa7590bf992d8206038b4f3edd6bd8230f966d

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/370719/

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