MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2
SHA3-384 hash: 0a34a31bbd61e146fbc7f205f38da12626ff44bbd9bb6a5d2912f5bc0a7ed42e08e210e6110c26d5d415781e4be7f536
SHA1 hash: 2fec4c9612aa029e925620b4648b2d11935e2f0a
MD5 hash: a308ec75b4162425c45963777a2d20ce
humanhash: oranges-nine-jig-pluto
File name:bootstrapper.exe
Download: download sample
Signature DeerStealer
Create hunting rule
File size:4'194'304 bytes
First seen:2026-06-15 16:47:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b400bba2fa478b1b6e64f988728df3c0 (1 x RemcosRAT, 1 x SalatStealer, 1 x DeerStealer)
ssdeep 3072:ORzaa/z6qDcwkLmehk8UDb76kQL/rcwBju0R6XXc9RgXj+jP+LvAQsgegSwZ3kO/:ORGK8qP6kQL/rcwlfR1yjh2OXJ
TLSH T1FF167D1AF7A514F9ED7B823CC9424906EA727C5647A0E6CF03E14A962F237D05E3EB11
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
Reporter abuse_ch
Tags:DeerStealer exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
125
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
bootstrapper.exe
Verdict:
Malicious activity
Analysis date:
2026-06-14 16:41:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2cf48c5d-81a7-4069-bc38-5048e72789bb

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/70829/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a2ed9aea15110463ee5c8eb
Tags:
stration dropper shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process with a hidden window
Creating a window
Connection attempt
Sending an HTTP GET request
Creating a file
Creating a process from a recently created file
Launching a file downloaded from the Internet
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug dllhost fingerprint hacktool lolbin microsoft_visual_cc overlay packed
Link:
https://www.filescan.io/uploads/6a302ce41f652d6865814f84/reports/1daaddec-71d1-4a62-b3c8-fdebd0ddf59d/overview
Verdict:
Malicious
Labled as:
Mikey.Generic
Link:
https://www.hybrid-analysis.com/sample/fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-06-14T13:44:00Z UTC
Last seen:
2026-06-14T15:42:00Z UTC
Hits:
~10
Detections:
Trojan-Downloader.Win32.Agent.sb HEUR:Trojan.Win64.Generic Trojan-Downloader.Agent.HTTP.C&C Trojan.Win64.Agent.smgmig Trojan.Win64.Agent.sb
Link:
https://opentip.kaspersky.com/fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/f9d16443-7827-4eb3-82f8-631896fdc5e3
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1928190
Signature
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses known network protocols on non-standard ports
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2/
Verdict:
Malicious
Threat:
Family.DEERSTEALER
Link:
https://tip.neiki.dev/file/fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2
Threat name:
Win64.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2026-06-14 19:27:32 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7qh5qb5khvtxulpgkw4f5v5zrxsqxbpbxmkirrzazwidcuhyq7ja._file
Verdict:
malicious
Label(s):
deerstealer
Create hunting rule
Similar samples:
error
DeerStealer
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:deerstealer family:donutloader discovery execution loader spyware stealer
Link:
https://tria.ge/reports/260615-vbc3sac171/
Behaviour
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
System Time Discovery
Drops file in Windows directory
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Detects DeerStealer
Detects DonutLoader
Family: DeerStealer
Family: DonutLoader
Unpacked files
SH256 hash:
fc0fd807aa3d677a2de655b85ed7b98de50b85e1bb1488c720cd903150f887d2
MD5 hash:
a308ec75b4162425c45963777a2d20ce
SHA1 hash:
2fec4c9612aa029e925620b4648b2d11935e2f0a
Link:
https://www.unpac.me/results/d7764241-c283-40fe-87fa-cdb45ae2217e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fc0fd807aa3d/report/overview.html
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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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)

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/70829/

Comments