MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd. 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 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd
SHA3-384 hash: 09f17d3bf29c3a4b59ab1e2399dc815c76cd40d98e6667938d684b0d6e58eba7082b924c2f81df484721a7a14eecbb54
SHA1 hash: a8955882f45fe0f1dc7e781278c545badb7e41b2
MD5 hash: c09c5e16a25974621f9ca11edf336558
humanhash: east-emma-steak-rugby
File name:f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd
Download: download sample
Signature Formbook
Create hunting rule
File size:1'333'256 bytes
First seen:2026-05-08 12:30:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'003 x AgentTesla, 19'907 x Formbook, 12'332 x SnakeKeylogger)
ssdeep 24576:vIs3SJJSHwwajNGxzzOWT1mQSXgXnFow2m56w4481:vTqUwwaJg6trQ3ydO442
TLSH T12655E004226AED02D7A66B7109F0D33CC6F46D5DA823D207DAE53ECB7A3579229F4346
TrID 72.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.4% (.EXE) Win64 Executable (generic) (6522/11/2)
4.4% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon 24e4c8d0f0c8d4d4 (16 x AgentTesla, 7 x Formbook, 7 x RemcosRAT)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
NETReactor
decrypted strings
Link:
https://research.acce.ciphertechsolutions.com/results/b0cecd44-5ec1-4841-8fe5-6e6ba9b89517/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
NEW CUSTOMER REQUEST FOR QUOTATIONS.scr
Verdict:
Malicious activity
Analysis date:
2026-04-08 01:46:25 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/d1981f4d-65d9-43e0-b2de-eb2af14bd89a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/65017/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.389-2.UNOFFICIAL
Create hunting rule

Win.Packed.Malwarex-10059921-0
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a service
Creating a process with a hidden window
Launching a process
Creating a file
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expired-cert formbook invalid-signature lolbin masquerade net_reactor obfuscated obfuscated packed packed signed snakekeylogger tracker vbnet
Link:
https://www.filescan.io/uploads/69fdd8e886e92bda702477e0/reports/d97ba4ee-6330-480d-9b44-d0b02e2dca05/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-01T22:14:00Z UTC
Last seen:
2026-05-10T09:07:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/cd0d9165-2b3e-41ad-bfee-1e8b2c6b0f68
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeylogger
Create hunting rule
Status:
Malicious
First seen:
2026-04-02 04:10:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260508-pr2s7ag15s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd
MD5 hash:
c09c5e16a25974621f9ca11edf336558
SHA1 hash:
a8955882f45fe0f1dc7e781278c545badb7e41b2
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
SH256 hash:
0c5520f7fc89f69c173039bd50967d4504a4c3096e8e979344d51994b5e75397
MD5 hash:
ef8bed9294679ad41396b8bda0e3ae7f
SHA1 hash:
80631169a2b2a003211ca39c48717fcbffc5986e
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
SH256 hash:
4447fe8d112e6455f2dc2764ef66df2e8b028838c99706f2c565058d08d1bac4
MD5 hash:
a12cf68b20113c7325bcdefc4dfd9fa0
SHA1 hash:
a4d8c80cfccf2e0d45299a0de1d59520a7e3ab85
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
SH256 hash:
1796a33c22dddbd184b3d3076ec086adcceaab727c9b9ab96968f4a01e09b38a
MD5 hash:
c759db0daa268d101607a456c22167fc
SHA1 hash:
a8a4dea5e57c5667b64684d154668111db8edceb
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
SH256 hash:
7f81846fe88e05a120b2b4562c56c6245433530828c8a17fe9c3631dd96e90e0
MD5 hash:
6d6d62784248e6af1196defb698ec05f
SHA1 hash:
603d1261b50bce216dc5edd152cd70af48a7e5e7
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
SH256 hash:
2daf2a506464c86c9ea680cb199def5b1fa541d5d125b2e26a780e164cd5c219
MD5 hash:
4f1d44d0f58558f896fec28f8d116bd0
SHA1 hash:
f75510e11644c696fab9756eb365aae3585ea7df
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/43aa2a0d-aea9-47ff-aad0-aeb2ae4c73f3/
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/f49f493e20534a1df9c2d367e55d646d51eae13a5c5d1da85181819eb3767acd

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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/65017/

Comments