MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684. 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: 16


Intelligence 16 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
SHA3-384 hash: 8c092d026cf0a992077d91f3ae886016a0fd4fca13e4a5f64214f37196d5fe7c228fd94797a0d1722a15dfb0b6d56204
SHA1 hash: a20d33a07dfc2e08dffea2f66afa1f29bf6cca0f
MD5 hash: 1d1a52c71f43bb240daf3562e71f9167
humanhash: papa-georgia-july-fifteen
File name:a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
Download: download sample
Signature Formbook
Create hunting rule
File size:1'228'800 bytes
First seen:2025-11-06 10:22:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (309 x Formbook, 52 x AgentTesla, 36 x SnakeKeylogger)
ssdeep 24576:i5EmXFtKaL4/oFe5T9yyXYfP1ijXdaGTcZsdErQLfy6:iPVt/LZeJbInQRaGwCC
Threatray 2'078 similar samples on MalwareBazaar
TLSH T1F345BF0273D1C066FFAB92334B56F6115ABC79260123E61F13A81DBABD705B1463E7A3
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 :
67
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
Verdict:
Malicious activity
Analysis date:
2025-11-06 11:12:35 UTC
Tags:
peristeronic
Link:
https://app.any.run/tasks/2bc3930d-f9bf-4696-8b83-8be1497a60bd

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/35688/
Detection(s):
SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690c76e15a5ed7864e236f28
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
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-12T23:56:00Z UTC
Last seen:
2025-11-08T03:36:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f6379bcb-ecff-40f3-82ea-d9c355e4498e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/1d1a52c71f43bb240daf3562e71f9167
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684/
Threat name:
Win32.Trojan.Autoitinject
Create hunting rule
Status:
Malicious
First seen:
2025-10-13 03:30:16 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=updx7yep72syifavmtbw5mdnizwb6g5lzr6nvrb46iucx7gqe2ca._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
032da2dc5566a0ea6335acb9a28dcd6d6083778614a8a7a2e0066a5baeeea2b5
Formbook
0faf94a24b00a7dca3cb0e26b29b0c3f72f66e2f968d997ad45e74620efeb11b
Formbook
4d0617fbb958d3dbfe6b7f642d4ca3a7c327a1c8c1d8ceb133c553e678015845
Formbook
7e94122a9c483446f957eea2d13bc3088657c59e691372a954fae675145dc3b9
Formbook
a684465a73338c71ef0b4094a7ea9cef4c7b75a9577286cbb9614bd6702a6917
Formbook
b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
Formbook
cef704d7865892c9752273badf9c9cc765448e69610a161b1e61f30239d730a4
Formbook
d5524fe820bb5053c55848f1b832179009569460a9879337458502b4c10c8195
Formbook
+ 2'068 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/251106-medvgshq6z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d54986d4-0e6c-4a5c-9039-b0c52242deac
Unpacked files
SH256 hash:
a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
MD5 hash:
1d1a52c71f43bb240daf3562e71f9167
SHA1 hash:
a20d33a07dfc2e08dffea2f66afa1f29bf6cca0f
Link:
https://www.unpac.me/results/2f0edbd8-8d6c-4caf-abdd-ef8def0db33b/
SH256 hash:
05a88aac5cc146590581afc663e46f9920d6e40ce97e1d499da8c2900d36df65
MD5 hash:
d5c13600abc97d9052369c26094b810c
SHA1 hash:
2355fb56e9f3262a6d0d66c3635c6a92dcc6bb19
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2f0edbd8-8d6c-4caf-abdd-ef8def0db33b/
Parent samples :
c17a3728cc73294f7391e0fc33d4ab7534a030911b517d01176c8f4dbd7d8628
a684465a73338c71ef0b4094a7ea9cef4c7b75a9577286cbb9614bd6702a6917
032da2dc5566a0ea6335acb9a28dcd6d6083778614a8a7a2e0066a5baeeea2b5
19969e249cc3273a55861163c5a3390dc8a8d0466ee8b807549d238fb2a88122
a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684
642a589dde40dbf7ea6506b6605b0eb9fe391f571923487f8bbf0d0d69c7aa0e
2779402264beca9b931165645a1661fd8f49ad5522b41046f4f6d9e502af6d47
44916f60e5ae854ee2a228103359191f51ccd738480d1302310e1561988e4217
SH256 hash:
93435d035bba77a872a986a4a4c3b30a3b6e5ba10e90f254e5ac49ddc105c181
MD5 hash:
83e597674e1b09dfbb63c19f41af7a80
SHA1 hash:
05716631003b83d4069773ee78d56da5d609b8a4
Link:
https://www.unpac.me/results/2f0edbd8-8d6c-4caf-abdd-ef8def0db33b/
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/a3c77fe08ffea584141564c36eb06d466c1f1babcc7cdac43cf2282bfcd02684

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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: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/

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/35688/

Comments