MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838. 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


UmbralStealer


Vendor detections: 19


Intelligence 19 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
SHA3-384 hash: a6e1e2529df1cb06133c0d8e9a0c35e71e91629a75a55c8c7e95287962f5087e52efe79c6daa7933228960dbfee20dc8
SHA1 hash: 471465cc775174bb5864583e43c63051675d1547
MD5 hash: b753666ff88126ff7f2c49029eaefd95
humanhash: uncle-sad-blossom-fifteen
File name:هاك فايف ام.exe
Download: download sample
Signature UmbralStealer
Create hunting rule
File size:260'096 bytes
First seen:2025-08-01 09:31:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'855 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 6144:K4oZoAeVHPtHgTIAaZgCwDx7axHU0unC28ejI8Y7:xoZyHPvWCwjXCsIH
Threatray 196 similar samples on MalwareBazaar
TLSH T18B448E4533B8CB12E29F8FBCE571449F8BB1F107ED06F78E1D8899E81851B41E849A67
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 burger
Tags:exe UmbralStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
38
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c42482c8_.exe
Verdict:
Malicious activity
Analysis date:
2025-08-01 09:31:07 UTC
Tags:
stealer auto-startup umbral generic divulgestealer ims-api
Link:
https://app.any.run/tasks/2e9a7ed8-cc19-4671-bdca-7cc0117f9a25

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/18279/
Detection(s):
Win.Packed.Msilzilla-9952790-0
Create hunting rule

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

Win.Packed.Msilperseus-9956592-0
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=688c895a0b4775fb21348860
Tags:
vmdetect
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
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/688c89729dbaf6e4b220bf65/reports/eca53cdf-8fee-42e7-ae5a-061cf121fb1d/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
Malware family:
Sharp Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/175909e6-553e-4f40-9f53-cc1f00eb0ffb
Result
Threat name:
Blank Grabber, Umbral Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1748306
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Drops PE files to the startup folder
Drops PE files with a suspicious file extension
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Modifies the hosts file
Modifies Windows Defender protection settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Self deletion via cmd or bat file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Powershell Defender Disable Scan Feature
Sigma detected: Suspicious Startup Folder Persistence
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Uses attrib.exe to hide files
Uses ping.exe to check the status of other devices and networks
Yara detected Blank Grabber
Yara detected Costura Assembly Loader
Yara detected Umbral Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1748306 Sample: #U0647#U0627#U0643 #U0641#U... Startdate: 01/08/2025 Architecture: WINDOWS Score: 100 48 ip-api.com 2->48 50 discord.com 2->50 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 22 other signatures 2->62 8 #U0647#U0627#U0643 #U0641#U0627#U064a#U0641 #U0627#U0645.exe 15 12 2->8         started        signatures3 process4 dnsIp5 52 ip-api.com 208.95.112.1, 49720, 49723, 80 TUT-ASUS United States 8->52 54 discord.com 162.159.138.232, 443, 49724 CLOUDFLARENETUS United States 8->54 40 C:\ProgramData\Microsoft\...\x7KdW.scr, PE32 8->40 dropped 42 C:\Windows\System32\drivers\etc\hosts, ASCII 8->42 dropped 44 #U0647#U0627#U0643...U0627#U0645.exe.log, ASCII 8->44 dropped 46 C:\ProgramData\...\x7KdW.scr:Zone.Identifier, ASCII 8->46 dropped 64 Suspicious powershell command line found 8->64 66 Found many strings related to Crypto-Wallets (likely being stolen) 8->66 68 Self deletion via cmd or bat file 8->68 70 4 other signatures 8->70 13 powershell.exe 23 8->13         started        16 cmd.exe 8->16         started        18 powershell.exe 11 8->18         started        20 9 other processes 8->20 file6 signatures7 process8 signatures9 72 Loading BitLocker PowerShell Module 13->72 22 WmiPrvSE.exe 13->22         started        24 conhost.exe 13->24         started        74 Uses ping.exe to check the status of other devices and networks 16->74 26 conhost.exe 16->26         started        28 PING.EXE 16->28         started        30 conhost.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 20->34         started        36 conhost.exe 20->36         started        38 6 other processes 20->38 process10
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
Verdict:
inconclusive
YARA:
12 match(es)
Tags:
.Net Executable Fody/Costura Packer PDB Path PE (Portable Executable) SOS: 0.00 SOS: 0.23 SOS: 0.38 Win 32 Exe x86
Link:
https://app.malva.re/file/b753666ff88126ff7f2c49029eaefd95
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838/
Verdict:
Malicious
Threat:
Trojan-PSW.MSIL.Umbral
Link:
https://tip.neiki.dev/file/401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
Threat name:
ByteCode-MSIL.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-08-01 09:31:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iao7jwvqqej3iomlml2ddotho3uvotlbdupz6ghxfkp5lszpba4a._file
Verdict:
malicious
Label(s):
umbral
Create hunting rule
Similar samples:
1b20bb50d5eb548b9de8905a860fe218da7b49e78ae87c0fee159686ba3e48a6
UmbralStealer
1ba744148ffbb3a1489f887660918fd7746928834f3db79e30cb7919000469a7
UmbralStealer
3ab45b027187d7114fdb07c66146ff5fa7fb9c3caf557a4671a61eba416cfb25
UmbralStealer
401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
UmbralStealer
5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f
UmbralStealer
ce8f179e7e29d4f28f1c5039808e82c198264183166069d8ad567f63275c74a8
UmbralStealer
error
UmbralStealer
+ 186 additional samples on MalwareBazaar
Result
Malware family:
umbral
Create hunting rule
Score:
  10/10
Tags:
family:umbral stealer
Link:
https://tria.ge/reports/250801-lg8bfawxgy/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Detects Umbral payload
Umbral
Umbral family
Malware Config
C2 Extraction:
https://discord.com/api/webhooks/1400646822346756216/VqQIh_GqRIfmnwuWoHKRDxAH9lRxQxAaY0I7MaPNm9HQMrqV3jzSfSjZD3J_Ee6ZeavN
Verdict:
Malicious
Tags:
stealer umbral Win.Packed.Msilzilla-9952790-0
YARA:
MALWARE_Win_Umbralstealer
Link:
https://app.threat.zone/submission/c79aca0b-10f7-4c08-baa1-76852a6fec05
Unpacked files
SH256 hash:
401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838
MD5 hash:
b753666ff88126ff7f2c49029eaefd95
SHA1 hash:
471465cc775174bb5864583e43c63051675d1547
Detections:
UmbralStealer
Create hunting rule
Link:
https://www.unpac.me/results/dd70e2f2-15e5-4e03-8746-14c27e0c3462/
Malware family:
UmbralStealer
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/401df4dab081/report/overview.html
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/401df4dab08113b4398b62f431ba6776e9574d611d1f9f18f72a9fd5cb2f0838

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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
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/18279/

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