MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a. 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


R77


Vendor detections: 16


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

SHA256 hash: 8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
SHA3-384 hash: 43a230090c17367e9835024dd7fbb45ebace3a95cdfd442f10926c5450beda378b62b891d0dc15befd4a9e861e53012e
SHA1 hash: 9c27e234567d237d9c495353567f2efa42e8f616
MD5 hash: d72fea64a05b3f7dce725352d7c1d032
humanhash: apart-finch-red-zebra
File name:rootkit.dll
Download: download sample
Signature R77
Create hunting rule
File size:228'352 bytes
First seen:2025-05-29 02:32:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:wguKV5BwUnZqazMhD9RLJt88sndcP8pPyDvUGOks:kKLBwiZlzMB9xgndcP88DvvP
TLSH T11024129B22DCE679C47F4F3EAEA8524197B7A0C68A474B20419CC5B51F3EEB409125CB
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 skocherhan
Tags:exe github-moom825 r77


Avatar
skocherhan
https://raw.githubusercontent.com/moom825/Discord-RAT-2.0/master/Discord rat/Resources/rootkit.dll

Intelligence

File Origin
# of uploads :
1
# of downloads :
560
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
MasonRootkit.zip
Verdict:
Malicious activity
Analysis date:
2024-08-28 11:05:15 UTC
Tags:
telegram rat njrat bladabindi
Link:
https://app.any.run/tasks/80daf22f-cb2a-41f7-aa7f-d938e0cbe3a0

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/6132/
Detection(s):
Win.Packed.Lazy-10019086-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6837c91eacf88f5815e84170
Tags:
stealer virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a file
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dllhost lolbin masquerade obfuscated packed packed packer_detected reconnaissance
Link:
https://www.filescan.io/uploads/6837c740171e01f95930226f/reports/4d0c28ed-b5e9-4464-a4d9-d49dc271fc11/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f58ddf82-737c-4b64-9602-2df7ff30ff6f
Result
Threat name:
R77 RootKit
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1701218
Signature
.NET source code contains process injector
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Creates a thread in another existing process (thread injection)
Found direct / indirect Syscall (likely to bypass EDR)
Found stalling execution ending in API Sleep call
Hooks files or directories query functions (used to hide files and directories)
Hooks processes query functions (used to hide processes)
Hooks registry keys query functions (used to hide registry keys)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs new ROOT certificates
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Writes to foreign memory regions
Yara detected R77 RootKit
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a/
Threat name:
Win32.Trojan.DiscordStealer
Create hunting rule
Status:
Malicious
First seen:
2021-09-17 07:58:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
30 of 36 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r7nolncjagb4sbl2nbhqvqxyfxk4rei4wl2duvh7i6u223utsuva._file
Verdict:
malicious
Label(s):
r77
Create hunting rule
Similar samples:
error
R77
Result
Malware family:
n/a
Score:
  10/10
Tags:
bootkit defense_evasion persistence
Link:
https://tria.ge/reports/250529-c1kvtadp4t/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Enumerates connected drives
Writes to the Master Boot Record (MBR)
Checks BIOS information in registry
Indicator Removal: Clear Windows Event Logs
Sets service image path in registry
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Malicious
Tags:
Win.Packed.Lazy-10019086-0
YARA:
n/a
Link:
https://app.threat.zone/submission/f8606883-3845-48d7-8ab9-bc820004e1dc
Unpacked files
SH256 hash:
8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
MD5 hash:
d72fea64a05b3f7dce725352d7c1d032
SHA1 hash:
9c27e234567d237d9c495353567f2efa42e8f616
Detections:
r77RootkitStager
Create hunting rule
Link:
https://www.unpac.me/results/80b5f781-805d-4642-96d7-54a72d4f0311/
Parent samples :
8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
e2822abbdcd990bd187506aba7f44d2b5f0c28e526f12baa1fddfdcdeecf19b4
f8913a531ebd3da8cd44c2b2e902a343beefc275c6e4e8da100faefc483d6271
SH256 hash:
25c7f72f7fa7986ac94f577aa73bd736d9acd81e459c93efda27e91ed10987b1
MD5 hash:
47e562e9410eb94b22f84b8dc5d87059
SHA1 hash:
fdc15bebb659dfda7f01b5319b12a5ae9a1a8902
Detections:
r77Rootkit
Create hunting rule
MALWARE_Win_R77
Create hunting rule
Link:
https://www.unpac.me/results/80b5f781-805d-4642-96d7-54a72d4f0311/
SH256 hash:
3b509593c23d070611452e311876e9a88ff80699f548fabaddb8830dcc319eb8
MD5 hash:
93cca2dd467d0142dd924279f78a8ccf
SHA1 hash:
eeb910831fbca9e7ee82b6feb7b2081f9c2650e0
Detections:
r77Rootkit
Create hunting rule
MALWARE_Win_R77
Create hunting rule
Link:
https://www.unpac.me/results/80b5f781-805d-4642-96d7-54a72d4f0311/
Parent samples :
8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a
e2822abbdcd990bd187506aba7f44d2b5f0c28e526f12baa1fddfdcdeecf19b4
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8fdae5b44901/report/overview.html
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/8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_R77
Create hunting rule
Author:ditekSHen
Description:Detects r77 rootkit
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Rootkit_R77_5bab748b
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:Windows_Rootkit_R77_99050e7d
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:Windows_Rootkit_R77_d0367e28
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit

File information

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

ac3249859dde5ecf000fcf102f68b9f2

R77

Executable exe 8fdae5b4490183c9057a684f0ac2f82dd5c8911cb2f43a54ff47a9ad6e93952a

(this sample)

  
Dropped by
MD5 ac3249859dde5ecf000fcf102f68b9f2
  
Dropped by
MD5 f7bce077ab4193d93486938704375033
  
Dropped by
MD5 d7404711d4014f104c5dea8cfb6aa2bf
  
Dropped by
MD5 b7192dc819f2935b4020439fd4527dc9
  
URLhaus
https://urlhaus.abuse.ch/url/3108506/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/6132/

Comments