MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf. 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 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf
SHA3-384 hash: 7b45d0c58c2673417c5aa1d38c23b303f3391fb3afe91efd9ee4b630289ff0f2979411e844c4cefc51f8a3d95192f4a5
SHA1 hash: 2eab878cf79764fd0669994f20733ea5ccf0d90f
MD5 hash: 20cadb603115e1040cd5ad4b73a3e391
humanhash: east-potato-lion-glucose
File name:b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf
Download: download sample
Signature Formbook
Create hunting rule
File size:1'014'784 bytes
First seen:2026-08-10 14:18:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'191 x AgentTesla, 20'339 x Formbook, 12'364 x SnakeKeylogger)
ssdeep 24576:vmdnw4uUBdcP38EpL0/pTxuzFZtRBL5ClB:vmdw4uUkP38EJwzuzn55Cr
TLSH T1BB2523C4AA82E603C55407790B70F2B667BE5CF6B410D7369FEEBDEBB4619085D081D2
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
58
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/262b571e-2899-4954-bc95-43d5caa02348/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79814/
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:
entropy packed
Link:
https://www.filescan.io/uploads/6a79de6fc28463a7097adbbf/reports/74a08fa9-3af0-4a3a-a380-4c595e5bc034/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-14T07:33:00Z UTC
Last seen:
2026-08-09T14:48:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4378f834-bc39-4228-b7a2-e6ea738533cc
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2026-07-14 12:20:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
XWorm
Create hunting rule
Link:
https://reports.threatray.com/85d10f37-87f0-4dfb-ad8a-8f2bdb165898
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260810-rnbtpswth1/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf
MD5 hash:
20cadb603115e1040cd5ad4b73a3e391
SHA1 hash:
2eab878cf79764fd0669994f20733ea5ccf0d90f
Link:
https://www.unpac.me/results/a1f42379-174c-4567-bb53-091d7f2de3ea/
SH256 hash:
a52ed16b1e05fbeb56e5b94ab1f313c380c16461f8019970e2e3790ede3c75cd
MD5 hash:
5736336b0c85478dbecbfe9622e77c03
SHA1 hash:
07cfc08c974e88fd8f398285344e18e4ac68e7f8
Link:
https://www.unpac.me/results/a1f42379-174c-4567-bb53-091d7f2de3ea/
SH256 hash:
42480fc3c833ee42a64b6783c155adb286efb19d1c596fe656fd1f4ecc099360
MD5 hash:
243891e65cdb9ca4bbda777592c3f1d8
SHA1 hash:
79b91300031f52084cb6161e69c904454e8c49ca
Link:
https://www.unpac.me/results/a1f42379-174c-4567-bb53-091d7f2de3ea/
SH256 hash:
52358f8c7284f3dcc7fca1bd39ddf25bac725d7161714d68ec29e73a44e99f15
MD5 hash:
835e48de8a726092706962cf849140db
SHA1 hash:
54c061712a819741ce4e42c6c83e99b7a6ae2987
Link:
https://www.unpac.me/results/a1f42379-174c-4567-bb53-091d7f2de3ea/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/b5ec2bbf0faff9ac7cf5d88dde412fde80300322dcaf1d8555be0413b112b4bf

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: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__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: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: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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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/79814/

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