MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157. 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 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
SHA3-384 hash: 26528fd4b78ab2258ee89a5ffc64d0783887eff1535000724a8cdd2325d16201e2917824ec0744e4d2c6caa7704419e9
SHA1 hash: 3462c4e0e6643102467fd1239b5c752defeb97c3
MD5 hash: 56ab5572ba046591c0ed8038d1d6c2e7
humanhash: eleven-rugby-nevada-pizza
File name:90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
Download: download sample
Signature Formbook
Create hunting rule
File size:1'215'488 bytes
First seen:2025-09-05 12:22:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep 24576:Htb20pkaCqT5TBWgNQ7aqHvf64X7CHyJd0MHC6A:EVg5tQ7aqPf6cJd0B5
Threatray 2'729 similar samples on MalwareBazaar
TLSH T14D45C01363DD8361C3B25273BA257701AEBF782506A5F96B2FD8093CF960122525EB73
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 :
57
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RV_ CIERTO O FALSO ___ FACTURA 8122025 DEBIDO AL PAGO.msg
Verdict:
Malicious activity
Analysis date:
2025-08-12 17:45:51 UTC
Tags:
susp-attachments attachments attc-doc attc-arch arch-exec autoit
Link:
https://app.any.run/tasks/23e42911-2d42-4cdf-b891-2cebbd5abd77

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/25251/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
N/A%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68bad618eb163e0ec184762a
Tags:
n/a
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script fingerprint keylogger microsoft_visual_cc obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/68bad7a320d0ee406d969d5f/reports/74e2556e-c426-47bc-a931-9779c8c3d81c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-12T13:27:00Z UTC
Last seen:
2025-08-12T13:27:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5baa956b-a633-49a9-be16-fe27591c1a00
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
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/56ab5572ba046591c0ed8038d1d6c2e7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-08-12 16:51:34 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sczt3assxfdq2gnmjl7spdteodaexl7aubgpcq5wdcack7fbgflq._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
formbook
Create hunting rule
Similar samples:
05da500934c4ab1b7bbc5e366f571bfe47d99a24efb4419966029f6fb8732de2
Formbook
14a371e6549ffd778165044baeafb53330d9f0756dd17369d5abc3e56f3951fa
Formbook
170c2b10322d1b2bbd5403091730544828633e2bdf59af1134b1ae1898a8d90c
Formbook
659cfb359d2e9890f3488d6dd65852151f9a3d6bdc8c27fd45e8a78b3489a354
Formbook
6a11ab33aa16d2d8ba08cb3c6edb5e0613c1d459287261ecd907f9359068cbc8
Formbook
89298940d17702803fc97b47258c639f223ddebd6368a0d946647cb79acacc2e
Formbook
a21182bf32d320deebafbf52f06c370fe3762ec55793e09df10ce9e27bfe799a
Formbook
affbb0db85505a477fad583411e0361f0502ef4d9c46059da31ca85eb0e0b5d6
Formbook
b75db5d4979ec63cf001640529fd3be14433a40d03e17e751754909617ccc4af
Formbook
d3ad7e22a740b5654dc36d3d803984ad83c9b2627edee55630c5a9816d42c085
Formbook
error
Formbook
+ 2'719 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/250905-pnqazswnz3/
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
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fd4bda54-50de-472b-a19d-35e0ac5aa434
Unpacked files
SH256 hash:
90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
MD5 hash:
56ab5572ba046591c0ed8038d1d6c2e7
SHA1 hash:
3462c4e0e6643102467fd1239b5c752defeb97c3
Link:
https://www.unpac.me/results/20df394b-3e46-455c-8522-a47165454e1c/
SH256 hash:
9137dfce3b09b58c208b29f6091f26704c84b43dd6ab86f09300e2a236c94c16
MD5 hash:
d434c050342158af709458f1f9712e6a
SHA1 hash:
3aaf9a812cb54d95ed642eb679d36f89364cf02b
Link:
https://www.unpac.me/results/20df394b-3e46-455c-8522-a47165454e1c/
SH256 hash:
ed96b4b30d66427423179efa034c75b86999d385b83b055c402ff4a6a947ce8e
MD5 hash:
aa148f5b3853c62de7d8ffadcce3c75a
SHA1 hash:
489e5aa8395972ee1fbcb174b81ad42008cb1b75
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/20df394b-3e46-455c-8522-a47165454e1c/
Parent samples :
90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
7d0a9896f43a544ed63039713dea55e9a6b0217af82b3b3c80478d739c6e09a7
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/90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157

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_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
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/25251/

Comments