MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d
SHA3-384 hash: bbadab4cb10dbfe3914b666bc79509f0678375149d81f670fe3a4c5b49ef3c550b81c6e8629181444869665ba5d5763a
SHA1 hash: 36e0b6fca32afe276aa6264b463dbc36d5590864
MD5 hash: 6fd182ad2cf1693dec1d061d8088ba58
humanhash: sierra-illinois-butter-michigan
File name:Quote#011698.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'303'040 bytes
First seen:2026-05-21 14:22:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 279daa640d9140f9842860a738abd363 (40 x Formbook, 8 x AgentTesla, 2 x CastleLoader)
ssdeep 24576:5qDEvCTbMWu7rQYlBQcBiT6rprG8aBq2GuYNciMhzBU5H:5TvC/MTQYxsWR7aBqPuY+iizBg
TLSH T19F55C00373C1C062FF9B92334B5AF6515ABC69660123E62F13981DB9BE701B1563E7A3
TrID 29.5% (.EXE) Win64 Executable (generic) (6522/11/2)
22.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
20.3% (.EXE) Win32 Executable (generic) (4504/4/1)
9.1% (.EXE) OS/2 Executable (generic) (2029/13)
9.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'698 x Formbook, 1'203 x CredentialFlusher, 928 x AgentTesla)
Reporter TomU
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
AutoIt AutoStones FormBook
Details
AutoIt
extracted scripts and files
AutoStones
the names of side-loaded components and, if available from processing of a parent file, the deobfuscated components
FormBook
a decrypted component and its RC4 key
Link:
https://research.acce.ciphertechsolutions.com/results/7fa7e08f-de6d-44d9-bf99-9004bf670945/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/67318/
Detection(s):
SecuriteInfo.com.Trojan.Generic.33203615.28472.17882.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0f1f2a98070a72bb9c7267
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context agenttesla anti-debug autoit compiled-script fingerprint installer-heuristic keylogger microsoft_visual_cc packed reconnaissance similar-threat
Link:
https://www.filescan.io/uploads/6a0f1cbb861ee596e6445207/reports/5fa0635e-41a8-48db-856c-b3b37af7a791/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d
Verdict:
Malicious
File Type:
exe x32
First seen:
2024-08-19T00:20:00Z UTC
Last seen:
2026-02-26T12:06:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f6a4e1fe-f205-41d6-95d5-c32a239257f6
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d/
Threat name:
Win32.Trojan.Strab
Create hunting rule
Status:
Malicious
First seen:
2024-08-19 06:46:21 UTC
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mszx5eg5o4sxhrdactbpvcq2pinwtx2knilpk46qgerwbzaeyygq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260521-rqmnzshz3s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d
MD5 hash:
6fd182ad2cf1693dec1d061d8088ba58
SHA1 hash:
36e0b6fca32afe276aa6264b463dbc36d5590864
Link:
https://www.unpac.me/results/91a9045b-b8dd-46e3-acc5-5939810e505d/
SH256 hash:
f9a184f6fe8686eddcff9bb4a241516e8bada4bfebec90ed79f4923edc243b56
MD5 hash:
78a5bdcf9636c56f5e3d668c6ca203b3
SHA1 hash:
f2318e318adf6ea44e556d5e7900ae187799e36c
Detections:
triage_formbook
Create hunting rule
Link:
https://www.unpac.me/results/91a9045b-b8dd-46e3-acc5-5939810e505d/
Parent samples :
644892e9fe96231990ad8095237bafee16d1fb77aadde35cd20105cef5f4b922
64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d
800fbef5cddd4f30fd159150638837e2be5217233397ef44c36f845b9cb014a7
SH256 hash:
afbd7af13d0c5534c2202c72642d3b9cf703fe7c6830b2286beddd98f1e60ca8
MD5 hash:
6f3a380b2fd6bb9d7ac1a3eccaf6adb9
SHA1 hash:
a38f313a8c75c93e2398c7f4c818e4d01793372f
Detections:
triage_formbook
Create hunting rule
Link:
https://www.unpac.me/results/91a9045b-b8dd-46e3-acc5-5939810e505d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/64b37e90dd77/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
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.

Malspam

Formbook

Executable exe 64b37e90dd772573c46014c2fa8a1a7a1b69df4a6a16f573d0312360e404c60d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/67318/

Comments