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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a. 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


Vjw0rm


Vendor detections: 14


Intelligence 14 IOCs 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a
SHA3-384 hash: f21eb7ea9588d359b0945e818f90a6c34275f4a0a9a38bae1ff47fdff7a87105e01419db9a7f62553710cee4bcfe75a3
SHA1 hash: 7d081db02f6654c785fca5b8187e13fdde5878c6
MD5 hash: c28b393fccf6d23f9b175b44c4288893
humanhash: mirror-oklahoma-lake-beryllium
File name:C28B393FCCF6D23F9B175B44C4288893.exe
Download: download sample
Signature Vjw0rm
Create hunting rule
File size:685'706 bytes
First seen:2024-09-08 11:20:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 75e9596d74d063246ba6f3ac7c5369a0 (8 x DCRat, 5 x PythonStealer, 4 x CoinMiner)
ssdeep 12288:SBdlwHRn+WlYV+W2X+t4DwlFpJu0nTXoJwh7mA9St4xjXLYqEWXP+YjjPGoTI:SBkVdlYAW0MlFPnEJwB9SojIFkjPGR
TLSH T17EE4F102B6D180B2E0322A325A75CB219A7F7C605F358BDF139C596D9B735C19A31BB3
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 9494b494d4aeaeac (918 x DCRat, 486 x NirCmd, 172 x RedLineStealer)
Reporter abuse_ch
Tags:exe vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://yuya0415.duckdns.org:1928/Vre

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://yuya0415.duckdns.org:1928/Vre https://threatfox.abuse.ch/ioc/1322213/

Intelligence

File Origin
# of uploads :
1
# of downloads :
433
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOCUMENTO_000000245896532NBCHGFTRGFBVDFC-PDF.zip
Verdict:
No threats detected
Analysis date:
2024-09-03 20:42:45 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b1cdea3e-d685-42e5-b9fb-88756b25a5be

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.14092.25867.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66dd88a03236667691a21a29
Tags:
Encryption Execution Infostealer Network Other Static Stealth Trojan Malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Running batch commands
Creating a process from a recently created file
Creating a file in the %temp% directory
Enabling the 'hidden' option for files in the %temp% directory
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Connection attempt to an infection source
Sending an HTTP POST request to an infection source
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
Downloading the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm epmicrosoft_visual_cc fingerprint houdini lolbin microsoft_visual_cc overlay packed setupapi shdocvw shell32
Link:
https://www.filescan.io/uploads/66dd88a1298b5b8c728e4809/reports/197ada10-48f3-4cfa-80d0-7f12fcab0480/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a012a08d-fe5a-4423-a14e-420b89169ae7
Result
Threat name:
VjW0rm, AsyncRAT, RATDispenser
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1507436
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Creates autostart registry keys with suspicious names
Creates autostart registry keys with suspicious values (likely registry only malware)
Creates multiple autostart registry keys
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Protects its processes via BreakOnTermination flag
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: VjW0rm
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Windows Shell Script Host drops VBS files
Wscript called in batch mode (surpress errors)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected RATDispenser
Yara detected VjW0rm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1507436 Sample: SX8OLQP63C.exe Startdate: 08/09/2024 Architecture: WINDOWS Score: 100 151 yuya0415.duckdns.org 2->151 153 pastebin.com 2->153 155 6 other IPs or domains 2->155 179 Suricata IDS alerts for network traffic 2->179 181 Found malware configuration 2->181 183 Malicious sample detected (through community Yara rule) 2->183 189 26 other signatures 2->189 13 SX8OLQP63C.exe 7 2->13         started        16 powershell.exe 2->16         started        19 powershell.exe 2->19         started        21 2 other processes 2->21 signatures3 185 Uses dynamic DNS services 151->185 187 Connects to a pastebin service (likely for C&C) 153->187 process4 file5 133 C:\Users\user\Desktop\DOCUMENTOS.exe, PE32 13->133 dropped 23 cmd.exe 1 13->23         started        159 Suspicious powershell command line found 16->159 161 Found suspicious powershell code related to unpacking or dynamic code loading 16->161 163 Wscript called in batch mode (surpress errors) 16->163 25 wscript.exe 16->25         started        28 conhost.exe 16->28         started        30 wscript.exe 19->30         started        32 conhost.exe 19->32         started        165 System process connects to network (likely due to code injection or exploit) 21->165 167 Wscript starts Powershell (via cmd or directly) 21->167 169 Very long command line found 21->169 171 3 other signatures 21->171 signatures6 process7 signatures8 34 DOCUMENTOS.exe 5 10 23->34         started        38 conhost.exe 23->38         started        197 Suspicious powershell command line found 25->197 199 Wscript starts Powershell (via cmd or directly) 25->199 40 powershell.exe 25->40         started        42 powershell.exe 30->42         started        process9 file10 121 C:\Users\user\AppData\Local\Temp\.......exe, PE32 34->121 dropped 123 C:\Users\user\AppData\Local\...\..........vbs, Unicode 34->123 dropped 125 C:\Users\user\AppData\...\..............js, ASCII 34->125 dropped 191 Machine Learning detection for dropped file 34->191 44 wscript.exe 2 34->44         started        48 wscript.exe 2 6 34->48         started        51 .......exe 3 34->51         started        193 Wscript called in batch mode (surpress errors) 40->193 53 wscript.exe 40->53         started        55 conhost.exe 40->55         started        57 wscript.exe 42->57         started        59 conhost.exe 42->59         started        signatures11 process12 dnsIp13 131 C:\Users\user\AppData\Local\TempbehaviorgraphLPd.vbs, Unicode 44->131 dropped 201 Suspicious powershell command line found 44->201 203 Wscript starts Powershell (via cmd or directly) 44->203 205 Very long command line found 44->205 207 Windows Shell Script Host drops VBS files 44->207 61 powershell.exe 44->61         started        64 schtasks.exe 44->64         started        66 schtasks.exe 44->66         started        135 nyan43.duckdns.org 48->135 137 192.169.69.26, 1928, 56291, 56300 WOWUS United States 48->137 209 System process connects to network (likely due to code injection or exploit) 48->209 211 Creates multiple autostart registry keys 48->211 213 Uses schtasks.exe or at.exe to add and modify task schedules 48->213 223 3 other signatures 48->223 215 Antivirus detection for dropped file 51->215 217 Machine Learning detection for dropped file 51->217 219 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 51->219 68 .......exe 2 51->68         started        71 powershell.exe 53->71         started        73 schtasks.exe 53->73         started        75 schtasks.exe 53->75         started        77 powershell.exe 57->77         started        79 2 other processes 57->79 file14 221 Uses dynamic DNS services 135->221 signatures15 process16 dnsIp17 225 Suspicious powershell command line found 61->225 227 Bypasses PowerShell execution policy 61->227 229 Found suspicious powershell code related to unpacking or dynamic code loading 61->229 81 powershell.exe 61->81         started        85 conhost.exe 61->85         started        87 conhost.exe 64->87         started        89 conhost.exe 66->89         started        157 nyan43.duckdns.org 46.246.80.17, 1963, 56331, 56334 PORTLANEwwwportlanecomSE Sweden 68->157 231 Protects its processes via BreakOnTermination flag 68->231 95 2 other processes 71->95 91 conhost.exe 73->91         started        93 conhost.exe 75->93         started        97 2 other processes 77->97 99 2 other processes 79->99 signatures18 process19 dnsIp20 139 pastebin.com 104.20.3.235, 443, 56290, 56292 CLOUDFLARENETUS United States 81->139 141 cdn.discordapp.com 162.159.130.233, 443, 56299, 56318 CLOUDFLARENETUS United States 81->141 149 2 other IPs or domains 81->149 127 C:\Users\user\AppData\Local\Temp\xx2.vbs, ASCII 81->127 dropped 129 C:\Users\user\AppData\Local\Temp\xx1.ps1, ASCII 81->129 dropped 101 powershell.exe 81->101         started        104 powershell.exe 81->104         started        143 54.231.203.129, 443, 56315 AMAZON-02US United States 95->143 106 powershell.exe 95->106         started        108 powershell.exe 95->108         started        145 185.166.143.48, 443, 56322 AMAZON-02US Germany 97->145 147 54.231.131.129, 443, 56323 AMAZON-02US United States 97->147 110 powershell.exe 97->110         started        112 powershell.exe 97->112         started        file21 process22 signatures23 195 Loading BitLocker PowerShell Module 101->195 114 powershell.exe 101->114         started        117 powershell.exe 106->117         started        119 powershell.exe 110->119         started        process24 signatures25 173 Creates autostart registry keys with suspicious values (likely registry only malware) 114->173 175 Creates autostart registry keys with suspicious names 114->175 177 Creates multiple autostart registry keys 114->177
Score:
84%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a/
Threat name:
Win32.Backdoor.Asyncrat
Create hunting rule
Status:
Malicious
First seen:
2024-09-04 00:07:39 UTC
File Type:
PE (Exe)
Extracted files:
36
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bdcfnpexn7iygfy3677pohmpyn4jjkpa4lb3aqnvrhgymt6ongfa._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
vjw0rm
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:vjw0rm botnet:suepr envio sep03 discovery execution persistence rat trojan worm
Link:
https://tria.ge/reports/240908-nfzzsatakn/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Command and Scripting Interpreter: PowerShell
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
AsyncRat
Vjw0rm
Malware Config
C2 Extraction:
nyan43.duckdns.org:1963
http://yuya0415.duckdns.org:1928
Dropper Extraction:
http://pastebin.com/raw/V9y5Q5vv
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/01184d60-50a2-46ce-956d-bd9161f2d084
Unpacked files
SH256 hash:
5db8c0d3888d2694301a0d557685d0eed3ec7d7bbdf553ad3a1992f7ce77a7cd
MD5 hash:
0dc096a3f3bd4ccf38d947ffef9ebf1c
SHA1 hash:
8019f04ce42ac242cc91421c12fdb98e418fc1de
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/55994f01-eb1d-41dd-b783-57f1adcd2bb6/
SH256 hash:
e593fb3170a39160a6e2ea34ce85d7d39060aac1d8cda0a510074453c3458682
MD5 hash:
9fd53b9213b89c11acce215a751b7ab5
SHA1 hash:
0a9e08482c9e00d5d2d09398258819cc2d058a90
Detections:
DCRat
Create hunting rule
AsyncRAT
Create hunting rule
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/55994f01-eb1d-41dd-b783-57f1adcd2bb6/
SH256 hash:
df799a232751f624d740181a77fb8f34c5d54dceedbf8c164bb293d4665424eb
MD5 hash:
37774ca06c322e08652757447188fd00
SHA1 hash:
09309a40b8ed4a9f1f6eba46cd0fe7a36d7166e8
Link:
https://www.unpac.me/results/55994f01-eb1d-41dd-b783-57f1adcd2bb6/
SH256 hash:
08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a
MD5 hash:
c28b393fccf6d23f9b175b44c4288893
SHA1 hash:
7d081db02f6654c785fca5b8187e13fdde5878c6
Link:
https://www.unpac.me/results/55994f01-eb1d-41dd-b783-57f1adcd2bb6/
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/08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a

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: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

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