MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4
SHA3-384 hash: df0eaa2b2c58dd9d03a1050a3f3887a27fbcce61d6f654f45a719e1da924243f7127985284d49e8e4478f8b1e7163d01
SHA1 hash: de99d3549df6461960fb2e62e4d2ef7b79b43381
MD5 hash: 4d2e68d1e796f7592eb9a788c859f882
humanhash: virginia-victor-robert-india
File name:a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4
Download: download sample
Signature Formbook
Create hunting rule
File size:1'112'064 bytes
First seen:2026-08-10 13:44:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'190 x AgentTesla, 20'337 x Formbook, 12'364 x SnakeKeylogger)
ssdeep 24576:wAvV0LonRn9qaq7y2kzaDR/6pmQ8COwvMf0V+iuZQ+6CGjQQy:wAN0Lo7qaq7fkuDR/A8oIYUZQZpfy
TLSH T1433501486B4CC806C45157388CA1E2F816696E6DFA11D253AFECFFEFB9727124C91392
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 3e73715d4d5d7d23 (62 x Formbook)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
71
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/0afea56b-2af8-47ff-a3b9-a4b8fa24fdd2/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79633/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
crypt packed vbnet
Link:
https://www.filescan.io/uploads/6a79d5d99319687c8f7bfa21/reports/efabb8e7-7f6b-496d-a0c5-d661e05b5c7c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-05T22:22:00Z UTC
Last seen:
2026-08-07T02:50:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b0ad4f68-9d48-48aa-a784-17afae4ceb73
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2026-07-06 01:20:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
27 of 36 (75.00%)
Threat level:
  2/5
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/70c15360-8ff9-433c-a3a7-ddf45d1ee2d6
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260810-q15rwazdpg/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4
MD5 hash:
4d2e68d1e796f7592eb9a788c859f882
SHA1 hash:
de99d3549df6461960fb2e62e4d2ef7b79b43381
Link:
https://www.unpac.me/results/42b4af8d-9f03-4772-8ce3-6838b3737312/
SH256 hash:
704d14a3637c0db4b77f0aaef2e57a9d27e13552b469c1ca6a70554918057e37
MD5 hash:
2f1fe6a0940286110b7af933a5a871d9
SHA1 hash:
4859ba6cd07cb12561d066b12b6c8cb4086ccfbd
Link:
https://www.unpac.me/results/42b4af8d-9f03-4772-8ce3-6838b3737312/
SH256 hash:
0ccda5fb8da309f4ca1af9510db9bbcbf8d91c6a12758f2ff05bfc885d46e764
MD5 hash:
19c91fe72a4e7aa7b59d84baf6ce9383
SHA1 hash:
672187a0dbc9f2314ffb8b34f9601fb29b2eb1d7
Link:
https://www.unpac.me/results/42b4af8d-9f03-4772-8ce3-6838b3737312/
SH256 hash:
6cd6903d12ecb90f404656bd20485cf78c4415a5127be56857835587f41f5703
MD5 hash:
08dbb4b6925de4b0de846e3d6d1bdf4d
SHA1 hash:
d330a660ac76fdbe27efb0be77aa85ceb75da71e
Link:
https://www.unpac.me/results/42b4af8d-9f03-4772-8ce3-6838b3737312/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4b0a84db7be/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/a4b0a84db7be828a5594158ae91e1f5bf4a80972042e5ee9718b40a5d64c52b4

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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/79633/

Comments