MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8
SHA3-384 hash: d10bb76a0a89728925d87311cffa66f93bfe2f1b78594601f8123c73b6c5dc243e46e0b6d0588d0f454f33d38ef68248
SHA1 hash: 8437c6bfeefede5ac4885096b88fbe2ef32c8e2e
MD5 hash: d0e6bb6d041c0fd4cf178c516f675a08
humanhash: east-sweet-indigo-ceiling
File name:ddosrl$.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:235'008 bytes
First seen:2025-07-04 11:16:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'757 x AgentTesla, 19'664 x Formbook, 12'252 x SnakeKeylogger)
ssdeep 6144:lloZMOfsXtioRkts/cnnK6cMlOX7fhv0IHx2PxM4dvYnb8e1mVMmi:noZCtlRk83MlOX7fhv0IHx2PxM4d+AML
TLSH T11C346B4933B88B17E25F8BBED5B1558F87B1F103E90AF7CE0C8899E82411742E949E57
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
28
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rl_b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8
Verdict:
Malicious activity
Analysis date:
2025-07-04 11:24:59 UTC
Tags:
stealer auto-startup evasion umbralstealer discordgrabber generic umbral divulgestealer discord exfiltration ims-api
Link:
https://app.any.run/tasks/0532e0bf-1d9d-47a8-b849-832eb4a558e3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
UmbralStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/12304/
Detection(s):
Win.Packed.Msilzilla-9952790-0
Create hunting rule

Win.Packed.Msilzilla-9955952-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6867b837c9eb9747376632f9
Tags:
vmdetect autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Launching a process
Creating a file in the %temp% directory
Creating a window
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm anti-vm base64 cmd fingerprint hacktool lolbin obfuscated reconnaissance wmic
Link:
https://www.filescan.io/uploads/6867b8429db85bde254a9223/reports/9ed1d8b4-a476-4a68-9c02-436d41473129/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8
Malware family:
Sharp Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a712a63a-4c19-4ca6-843d-f95e7da8f2f1
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
.Net Executable PE (Portable Executable) Win 32 Exe x86
Link:
https://app.malva.re/file/d0e6bb6d041c0fd4cf178c516f675a08
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8/
Threat name:
ByteCode-MSIL.Trojan.UmbralStealer
Create hunting rule
Status:
Malicious
First seen:
2025-07-04 11:17:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
31 of 37 (83.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp6v6deq3msevc2kthi7ynbkxrkemqzszqjke6zw5id7maoxc7ea._file
Verdict:
malicious
Label(s):
umbral
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
umbral
Create hunting rule
Score:
  10/10
Tags:
family:umbral execution spyware stealer
Link:
https://tria.ge/reports/250704-ndp2ss1yez/
Behaviour
Detects videocard installed
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Detect Umbral payload
Umbral
Umbral family
Malware Config
C2 Extraction:
https://discordapp.com/api/webhooks/1390431858537529586/SoV5MUsiH2bKEvPTnw35lcMTFItJ8HCwfBKUEWMhO-jzOt1NJiAjmzOCAz6cNB3W5Y25
Verdict:
Malicious
Tags:
stealer umbral Win.Packed.Msilzilla-9952790-0
YARA:
MALWARE_Win_Umbralstealer
Link:
https://app.threat.zone/submission/5dfcfbd3-78d3-4b16-a211-d3aea94521e4
Unpacked files
SH256 hash:
b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8
MD5 hash:
d0e6bb6d041c0fd4cf178c516f675a08
SHA1 hash:
8437c6bfeefede5ac4885096b88fbe2ef32c8e2e
Detections:
UmbralStealer
Create hunting rule
Link:
https://www.unpac.me/results/ced2f93e-b071-4421-af66-b33beed3f7a7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.77
Link:
https://yomi.yoroi.company/submissions/b3fd5f0c90db244a8b4a99d1fc342abc54464332cc12a27b36ea07f601d717c8

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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM names
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox system UUIDs
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxUserNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM usernames
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:MALWARE_Win_UmbralStealer
Create hunting rule
Author:ditekShen
Description:Detects Umbral infostealer
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:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:UmbrealStealerEXIFData
Create hunting rule
Author:adm1n_usa32
Description:Detects UmbralStealer by obvious comment in EXIF Data

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/12304/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments