MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962. 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: 14


Intelligence 14 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
SHA3-384 hash: 25134b7e395b071a0f61fc45dacaab8a48ea83488bf9b79d7d328742723bd7c8fa99dd2c00fa0027841a8bd7b5b2a125
SHA1 hash: a122300edd872d6dd4a437b35846dc74557c3186
MD5 hash: 9bc2aeb5926d89c8f1d14fd647353b1a
humanhash: lake-delaware-two-snake
File name:a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
Download: download sample
Signature Formbook
Create hunting rule
File size:1'213'952 bytes
First seen:2026-02-05 15:25:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 279daa640d9140f9842860a738abd363 (23 x Formbook, 2 x CastleLoader, 1 x RemcosRAT)
ssdeep 24576:EqDEvCTbMWu7rQYlBQcBiT6rprG8a6HWCNhj0XUWd+dj:ETvC/MTQYxsWR7a67hj0kX
Threatray 2'614 similar samples on MalwareBazaar
TLSH T11945CF0273C1D062FFABA2334F5AF6115BBC69260123A61F13A81D79BD705B1563E7A3
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
AutoIt AutoStones
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
Link:
https://research.acce.ciphertechsolutions.com/results/68a604f6-1731-47ee-aa05-827d19ae9afc/
Malware family:
n/a
ID:
1
File name:
a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
Verdict:
No threats detected
Analysis date:
2026-02-05 18:29:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4d988438-438b-4d5f-829a-81e749c32ca4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/52034/
Detection(s):
SecuriteInfo.com.Trojan.Generic.33203615.28472.17882.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6984b6aeae5379bb6609c40a
Tags:
autoit emotet
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint keylogger microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/6984b6a7981ff1d38a4a0797/reports/451fb520-51eb-4084-93aa-359effc81411/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
Result
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-20T23:13:00Z UTC
Last seen:
2026-02-04T05:58:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/015aa1b4-ec93-4412-afb3-af4e0350543e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2026-01-21 06:48:13 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uzc2v4hdmzztuvmwu3mg24ld6p5meewbiei7bl5k5l4xjnql3fra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
00ca6e2c0cf97d95fbe2bde0f38659e8c7a47fdc4fa784be828aff5e051dd64b
Formbook
0181debef17f37a78926c383a839ad2994f6dc49bcc5602890558545d58a9876
Formbook
26d6053c28e6d07e8be6f160fab2334b8339f23cafe1b35e524e1add0acee6b4
Formbook
750d0ef6eaaac00190a10d38493cf765fcb9a9076ecf4d52ca356af4a650585f
Formbook
8a226b58f29599b98ff089f0dd5ecb845dbac90982ed15337734886e15912952
Formbook
8c36017fb562623b423d65c040cf67365367a8b271f375b91e69b4c942cd09da
Formbook
b815f365f539b1893fefa15f8b39382b6ec4f249e75b85e348bab807cb989eff
Formbook
ccb84b327afb07bccbe3367be35abe53ccb8f0ad9a815bb098e30029387def10
Formbook
error
Formbook
+ 2'604 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260205-svcj9aat3d/
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
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
MD5 hash:
9bc2aeb5926d89c8f1d14fd647353b1a
SHA1 hash:
a122300edd872d6dd4a437b35846dc74557c3186
Link:
https://www.unpac.me/results/df2c8551-0b3c-43e2-8d6f-67e0b744a387/
SH256 hash:
333440f1ec3ee5d6b5cb6dcad3e08fbb4b94e1bbd9ecb866b01d7e9b27749f71
MD5 hash:
cf6c3ab5ffdf60532336db0677ec676e
SHA1 hash:
0d3e6f1f52050b075331b5660e0c0eb154a85311
Link:
https://www.unpac.me/results/df2c8551-0b3c-43e2-8d6f-67e0b744a387/
SH256 hash:
6de8e7b8b4aeb1b9fa68a57029c25aa004478a808877036f3de2ec526b130959
MD5 hash:
c765ef9ec487f57f232a03ae1addcc16
SHA1 hash:
1bbdd8f976a1f08c70d703245d6d6e2775f7a38c
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/df2c8551-0b3c-43e2-8d6f-67e0b744a387/
Parent samples :
901891aee909a9e9c4deccca42311c0b7b5aaedea79082512b6e81db2f2e4323
11ac85099031a8d3c666ae8295d1b36a0115bd9b3c319481ee7f39450613054a
a21cea52a66cb02df71c42492bf7acf4d6393327fc9cfc20a7dbf246477df853
ca1d88d18d99a6f7f3fbe805327a369ba75594669c02d8f86e30f1ad8c56a2b4
0cc5a2fd9f73331cd37bef1667d4057e325c098602c61de8aa3a94cfe08cc519
ccb84b327afb07bccbe3367be35abe53ccb8f0ad9a815bb098e30029387def10
8a226b58f29599b98ff089f0dd5ecb845dbac90982ed15337734886e15912952
60cd8949dd366aa94383409dde4e7840d85db4f2cea2eef7f773b9fe2d36bc68
544c6d4ae8075826b97fd416d9ff441989a785bf3e945851494d0db18728f604
9fc9401b548091b02b74da0ea58aa279db23c47c5ab2bfaacea4605df89d511d
750d0ef6eaaac00190a10d38493cf765fcb9a9076ecf4d52ca356af4a650585f
626bb341a8d9ec79994bc12565a9f3c4c6944dc79ba65d66aa35fc9d9ff7e5f4
580d879e602682dd79ce48481acd26611082d62ad3174a09813e84bd5b5a85f7
a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962
08d1b8b8c99de4e6a4d043d9004aa154088453361140525d5626d5bd9c9281a5
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/a645aaf0e366733a5596a6d86d7163f3fac212c14111f0afaaeaf974b60bd962

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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
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: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_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:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

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/52034/

Comments