MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb. 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


DCRat


Vendor detections: 17


Intelligence 17 IOCs 1 YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb
SHA3-384 hash: 5e9e7b29eaefa78df4a4bb272c01e2f73fe04ebf7e8e91f5fb11b46f18a4f8eec7e87c162ef5b1c5733f143605741a0d
SHA1 hash: 58469307ede4540983f90a496b032856ea3260f9
MD5 hash: 39f95fcb7e764a11513a3eeb4da2f6b4
humanhash: fish-lithium-beer-sink
File name:39f95fcb7e764a11513a3eeb4da2f6b4.exe
Download: download sample
Signature DCRat
Create hunting rule
File size:1'172'718 bytes
First seen:2024-09-12 02:30:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (864 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:/2G/nvxW3WoMIaw4q2nbxF7vATw2rF0o8MCZB:/bA3ldawB2n/vAT/ryIe
Threatray 975 similar samples on MalwareBazaar
TLSH T1D34559017F44DE21F0091633C2FF450847B4A851AAA6E72B7EBA37AE55123973C5DACB
TrID 76.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
16.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
3.0% (.EXE) Win64 Executable (generic) (10523/12/4)
1.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon 698e2a33332b8e4d (1 x DCRat)
Reporter abuse_ch
Tags:DCRat exe


Avatar
abuse_ch
DCRat C2:
http://cd73139.tw1.ru/L1nc0In.php

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://cd73139.tw1.ru/L1nc0In.php https://threatfox.abuse.ch/ioc/1323684/

Intelligence

File Origin
# of uploads :
1
# of downloads :
436
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
dcrat
Create hunting rule
ID:
1
File name:
39f95fcb7e764a11513a3eeb4da2f6b4.exe
Verdict:
Malicious activity
Analysis date:
2024-09-12 02:32:47 UTC
Tags:
rat dcrat remote darkcrystal stealer netreactor
Link:
https://app.any.run/tasks/7952709b-f2a5-43d0-bbd0-33aa6c2e3d7a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.VBS.Encrypted.Gen.UNOFFICIAL
Create hunting rule

Win.Packed.Msilmamut-9950860-0
Create hunting rule

Win.Packed.Uztuby-9963900-0
Create hunting rule

Win.Packed.Uztuby-9969968-0
Create hunting rule

Win.Malware.Uztuby-9972880-0
Create hunting rule

Win.Trojan.DarkKomet-9976180-0
Create hunting rule

Win.Trojan.Uztuby-10010740-0
Create hunting rule

SecuriteInfo.com.Trojan.Rasftuby.Gen.14.10239.27368.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e2526876bc4542b0497a21
Tags:
Encryption Execution Generic Network Other Static Stealth Trojan Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Launching a process
Creating a file in the Program Files subdirectories
Creating a file in the Windows subdirectories
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Blocking a possibility to launch for the Windows Task Manager (taskmgr)
Enabling autorun
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm cmd cscript dcrat epmicrosoft_visual_cc explorer fingerprint installer lolbin microsoft_visual_cc overlay packed schtasks setupapi sfx shdocvw shell32
Link:
https://www.filescan.io/uploads/66e252677793e19d5783b0fb/reports/0dcda30d-3ac5-4490-9440-28b5d781c4ee/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f28e9201-3bef-4686-b5b3-fb4417d94f61
Result
Threat name:
DCRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509812
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an autostart registry key pointing to binary in C:\Windows
Creates an undocumented autostart registry key
Creates multiple autostart registry keys
Creates processes via WMI
Drops PE files to the user root directory
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Execution from Suspicious Folder
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Suspicious File Creation In Uncommon AppData Folder
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected DCRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1509812 Sample: YXJLo51Wc4.exe Startdate: 12/09/2024 Architecture: WINDOWS Score: 100 52 206.23.85.13.in-addr.arpa 2->52 54 Suricata IDS alerts for network traffic 2->54 56 Found malware configuration 2->56 58 Antivirus detection for URL or domain 2->58 60 15 other signatures 2->60 11 YXJLo51Wc4.exe 3 6 2->11         started        14 bAFvmzMHmitEqYtOvwX.exe 3 2->14         started        17 bAFvmzMHmitEqYtOvwX.exe 2->17         started        signatures3 process4 file5 48 C:\chainBlockdrivernet\Intosvc.exe, PE32 11->48 dropped 50 C:\...\XB3ahdxhrzxdLjCWrWvOZGs3518.vbe, data 11->50 dropped 19 wscript.exe 1 11->19         started        72 Multi AV Scanner detection for dropped file 14->72 signatures6 process7 signatures8 62 Windows Scripting host queries suspicious COM object (likely to drop second stage) 19->62 22 cmd.exe 1 19->22         started        process9 process10 24 Intosvc.exe 12 42 22->24         started        28 conhost.exe 22->28         started        file11 40 C:\...\bAFvmzMHmitEqYtOvwX.exe, PE32 24->40 dropped 42 C:\Windows\SKB\bAFvmzMHmitEqYtOvwX.exe, PE32 24->42 dropped 44 C:\Windows\...\bAFvmzMHmitEqYtOvwX.exe, PE32 24->44 dropped 46 16 other malicious files 24->46 dropped 64 Antivirus detection for dropped file 24->64 66 Multi AV Scanner detection for dropped file 24->66 68 Creates an undocumented autostart registry key 24->68 70 6 other signatures 24->70 30 schtasks.exe 24->30         started        32 schtasks.exe 24->32         started        34 schtasks.exe 24->34         started        36 31 other processes 24->36 signatures12 process13 process14 38 Conhost.exe 30->38         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb/
Threat name:
ByteCode-MSIL.Trojan.Uztuby
Create hunting rule
Status:
Malicious
First seen:
2024-09-06 15:45:44 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=as4pkbbczk2fomkmbeck56eo2madws4ed76uiqpgoqk7jud5uk5q._file
Verdict:
malicious
Similar samples:
3da49f4f7f8e9b628584321c65a3ab3e8d5c7c27615cfc527a0e6bad9af1b8af
DCRat
40e2af7feff476ac43edae054634e294c55e966e7139d77d0bcd98d49a228aab
DCRat
6d51f3afa3d465e86e4263f50ac0873a42813f94948406fff9bc3e6b7e081b3e
DCRat
90f403c6304240465460ace49b8db9d46c7d28bc36fd49b89f4722ee497bd2dd
DCRat
ec97ac4f877f3b09bd07231f37f4d86b035c1cb1502880de86e737fca732d116
DCRat
+ 965 additional samples on MalwareBazaar
Result
Malware family:
dcrat
Create hunting rule
Score:
  10/10
Tags:
family:dcrat discovery evasion infostealer persistence rat
Link:
https://tria.ge/reports/240912-czp35swgkq/
Behaviour
Modifies registry class
Modifies registry key
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Disables Task Manager via registry modification
DCRat payload
DcRat
Modifies WinLogon for persistence
Process spawned unexpected child process
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1173e3f0-b1fc-468c-b581-ba08f5129e83
Unpacked files
SH256 hash:
a0260d2d8f130497d81d98a8b39f1a1a7d29eac3f0d3a0895994240b33bf0531
MD5 hash:
bd98aaf508434dd60c9dad0aa2cdd84a
SHA1 hash:
4009049d24224ef29cab60e7d71aba7bee892755
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2a93bcab-e675-4311-905f-7b99e94eb255/
SH256 hash:
04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb
MD5 hash:
39f95fcb7e764a11513a3eeb4da2f6b4
SHA1 hash:
58469307ede4540983f90a496b032856ea3260f9
Detections:
win_xorist_auto
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2a93bcab-e675-4311-905f-7b99e94eb255/
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/04b8f50422cab457314c0904aef88ed3003b4b841ffd4441e67415f4d07da2bb

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:Detect_APT29_WINELOADER_Backdoor
Create hunting rule
Author:daniyyell
Description:Detects APT29's WINELOADER backdoor variant used in phishing campaigns, this rule also detect bad pdf,shtml,htm and vbs or maybe more depends
Reference:https://cloud.google.com/blog/topics/threat-intelligence/apt29-wineloader-german-political-parties
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:win_xorist_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.xorist.

File information

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

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 (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdiplusShutdown
gdiplus.dll::GdipAlloc
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::AttachConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

Comments