MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03d82d139e426e0681491151774ecb233deadc70851328a3ce623dcf8988baa8. 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



DeerStealer


Vendor detections: 11


Intelligence 11 IOCs YARA 16 File information Comments

SHA256 hash: 03d82d139e426e0681491151774ecb233deadc70851328a3ce623dcf8988baa8
SHA3-384 hash: be3228260d94c8ffb78eb16eb82a4b811d35e61001229c580b7c053c317bf975dbd006d449842bc7d18fdba0907a2378
SHA1 hash: 16f99c369dc1c65e5cb8fa2e6a2731f4f180bc09
MD5 hash: 0e06addb6c3991067f6a19cd71ecaf85
humanhash: fruit-happy-iowa-fourteen
File name:a.msi
Download: download sample
Signature DeerStealer
File size:26'424'821 bytes
First seen:2026-01-08 09:32:45 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 393216:kb5ffm/KInNb7iPdJsv6tWKFdu9CNxryw2oxuCp8NDUFsLQsK:kBfmFnN0pywJxJiNDKsK
TLSH T14847CF92B6838172D8D282B99A1F673F817AB956871182C3D39C7F4999703E11F3B707
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter Anonymous
Tags:DeerStealer msi

Intelligence


File Origin
# of uploads :
1
# of downloads :
81
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
HijackLoader MSI
Details
HijackLoader
an XOR key and XOR-decrypted/LZNT1 decompressed component
MSI
an embedded setup program or component
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
action anti-debug anti-vm base64 datper expired-cert expired-cert fingerprint infostealer installer keylogger packed wix
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Clean
File Type:
msi
First seen:
2026-01-08T17:20:00Z UTC
Last seen:
2026-01-08T17:32:00Z UTC
Hits:
~10
Verdict:
inconclusive
YARA:
7 match(es)
Tags:
Executable Html Office Document PDB Path PE (Portable Executable) PE File Layout
Gathering data
Verdict:
malicious
Label(s):
deerstealer hijackloader
Similar samples:
Result
Malware family:
hijackloader
Score:
  10/10
Tags:
family:deerstealer family:donutloader family:hijackloader discovery loader persistence privilege_escalation spyware stealer
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Browser Information Discovery
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
System Time Discovery
Suspicious use of SetThreadContext
Enumerates connected drives
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
DeerStealer
Deerstealer family
Detects DeerStealer
Detects DonutLoader
Detects HijackLoader (aka IDAT Loader)
DonutLoader
Donutloader family
HijackLoader, IDAT loader, Ghostulse,
Hijackloader family
Malware family:
IDATLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang
Rule name:identity_golang
Author:Eric Yocam
Description:find Golang malware
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Author:malware-lu
Rule name:RANSOMWARE
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_Websites
Author:SECUINFRA Falcon Team
Description:Detects the reference of suspicious sites that might be used to download further malware
Rule name:test_Malaysia
Author:rectifyq
Description:Detects file containing malaysia string
Rule name:vmdetect
Author:nex
Description:Possibly employs anti-virtualization techniques

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments