MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4. 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 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
SHA3-384 hash: 9d75eeab9c88f0deae0b9c5991a12635169788607d340a390262430fada91ae0f0b49dcee5556e34cee6be814ab46dbd
SHA1 hash: 3642a70187c4571dd7ae6dd0cf63bee745951e47
MD5 hash: a280f53bfa9bdf0686fe96ba3a6bc468
humanhash: three-happy-butter-charlie
File name:a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
Download: download sample
Signature Formbook
Create hunting rule
File size:1'202'688 bytes
First seen:2025-12-08 14:41:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (126 x Formbook, 32 x a310Logger, 27 x AgentTesla)
ssdeep 24576:Gtb20pkaCqT5TBWgNQ7aTf3ndBj/hq4FNyKt6A:zVg5tQ7aT1BjZ3Z5
TLSH T14C45CF1373DEC361C3B25273BA567701AEBF782506A1F96B2FD8093DE920162521E673
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 :
74
Origin country :
HU HU
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/17eef509-f02f-4e30-82a0-e95def71e1ce/
Malware family:
n/a
ID:
1
File name:
a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
Verdict:
No threats detected
Analysis date:
2025-12-08 16:27:34 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4fe812f6-4df3-4b65-bcb0-9e924b32aaf5

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/43119/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6936e3b6db58e1a2c22b836c
Tags:
autoit emotet
Verdict:
Malicious
Labled as:
AIT:Trojan.Nymeria
Link:
https://www.hybrid-analysis.com/sample/a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-11T08:51:00Z UTC
Last seen:
2025-12-10T06:33:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c250cf72-32a7-4e00-86b8-5ad76ed70e0a
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
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/a280f53bfa9bdf0686fe96ba3a6bc468
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-11-11 13:12:28 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ux3yonlfhwsmhvb4kskgu2u35ipfsw3gbajij6lfzdlt6kowlpca._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/251208-r2nqeswqfy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7321aaea-84e2-45ce-ae7b-35bbe17f24ac
Unpacked files
SH256 hash:
a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
MD5 hash:
a280f53bfa9bdf0686fe96ba3a6bc468
SHA1 hash:
3642a70187c4571dd7ae6dd0cf63bee745951e47
Link:
https://www.unpac.me/results/94090991-5e4a-4893-ab3a-fb5e9c51c666/
SH256 hash:
beb083916c0287752dc4823c0cea4b443b7e710587159ed6dd07592b12d743dd
MD5 hash:
4c4d1a12304ba2cb73a4ce110e695c25
SHA1 hash:
5638d057170c35e15dac32f2fbe700d6157794b3
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/94090991-5e4a-4893-ab3a-fb5e9c51c666/
Parent samples :
bef94433d26c99a11e7a4408ce031bc5edf77d7aa8286df6aecb695bdd496563
a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74
869a2ecf27d975c9c063cb74e2a1ce3aab6ce93b80a80ef844608cc75a87b41c
ae9e7502a23c5e541559ffb7e28af15e4e9eccabd451f5c916d86496968a0eec
728546301b7008b5a1fb3aea761701debc5b249e959baa0d09cfba30be90e012
6e1b565d73adc5f58f68656987b62e2bc51c217acc496dab3f5c2ce4df629e1c
65f8634f1ce02e29a2ab4cbf72194b785b9f94533c0240ca79b01bbc0469bc0a
a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4
2d1ebc58876a03dbf8c42cf167166654747752d66698d66231f1a3ebc8308c59
a1c4a7b9c7c6ad8ca5a07a0c7c9db49ae6b3df603b60590dda358faedff91595
d8eb4dc0afc0a97e464235870b3519f9947585194a1f9ef62763f5b04d51656c
b3c60e8722e0c7d3f9d14d88403d435d48ab1f725bcfe72d6e33c2a56f585fda
63308ebe63a055b8423e2483c48a847f0e47c61a6a8eef5f4bb30d206a458ccd
SH256 hash:
8cc9dc2e10902f45f7c98f1c365871795f0a6f3f44fafab82c68e1725b9d39eb
MD5 hash:
a5ca2815e7f0d0bb95b5f18c56c454a2
SHA1 hash:
88e63051d922be0a64d0538adcdf20db3b5633d1
Link:
https://www.unpac.me/results/94090991-5e4a-4893-ab3a-fb5e9c51c666/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a5f78735653d/report/overview.html
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/a5f78735653da4c3d43c54946a6a9bea1e595b66081284f965c8d73f29d65bc4

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_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/
Rule name:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

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/43119/

Comments