MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a. 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


AsyncRAT


Vendor detections: 17


Intelligence 17 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
SHA3-384 hash: bb80318f78807db126f2ae29570135bd72036f6a382ce5e96cbd9520346cc0d90e283afe38ade60b87818ef2d3d07cf6
SHA1 hash: e0b8080d2c241ee9c8d7d31adb6ecc0fc43d0a0e
MD5 hash: 3a43f4d6c1ce25bc8efe548fa2b16bc7
humanhash: virginia-maryland-skylark-earth
File name:Drawing&spec.scr
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:963'584 bytes
First seen:2024-12-05 12:59:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:uu6J33O0c+JY5UZ+XC0kGso6FauSnJzxWY:gu0c++OCvkGs9FauSaY
Threatray 2'959 similar samples on MalwareBazaar
TLSH T19D25AE2273DDC360CB669133BF69B7016EBF3C614630B95B2F980D7DA950162262D7A3
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10522/11/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter TeamDreier
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
406
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
Drawingspec.scr.exe
Verdict:
Malicious activity
Analysis date:
2024-12-05 17:34:43 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/76a21b8f-b02a-46d2-9243-98fa8ae13ab0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6751a3e212e85e185e762326
Tags:
nanocore autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Connection attempt
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script explorer fingerprint hacktool keylogger lolbin masquerade microsoft_visual_cc msconfig nanocore packed packed packer_detected
Link:
https://www.filescan.io/uploads/6751a3e0f6c79c7aa8bcc68b/reports/517bff34-0373-445f-b6dc-ba224758a993/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9fd85dbc-9c7d-4330-b94e-2d5f39034567
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1569120
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
Drops VBS files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1569120 Sample: Drawing&spec.scr.exe Startdate: 05/12/2024 Architecture: WINDOWS Score: 100 30 Found malware configuration 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 8 other signatures 2->36 7 Drawing&spec.scr.exe 4 2->7         started        11 wscript.exe 1 2->11         started        process3 file4 24 C:\Users\user\AppData\...\unfatigued.exe, PE32 7->24 dropped 38 Binary is likely a compiled AutoIt script file 7->38 40 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->40 13 unfatigued.exe 2 7->13         started        42 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->42 17 unfatigued.exe 1 11->17         started        signatures5 process6 file7 26 C:\Users\user\AppData\...\unfatigued.vbs, data 13->26 dropped 44 Multi AV Scanner detection for dropped file 13->44 46 Binary is likely a compiled AutoIt script file 13->46 48 Machine Learning detection for dropped file 13->48 56 2 other signatures 13->56 19 RegSvcs.exe 2 13->19         started        50 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 17->50 52 Writes to foreign memory regions 17->52 54 Maps a DLL or memory area into another process 17->54 22 RegSvcs.exe 3 17->22         started        signatures8 process9 dnsIp10 28 69.174.100.131, 49704, 49766, 49828 ASN-QUADRANET-GLOBALUS United States 19->28
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2024-12-04 10:52:46 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jnomd2m5fbsr7o3jgqrmlu4syxkh36tbzdwetfizo4dn4xftiqva._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
unknown_loader_036
Create hunting rule
Similar samples:
381b0050bec759faad8d6553365f5d8553eb93d511b28a7aaa6183ec657a13ae
AsyncRAT
923cf7d4a3785f11ac119a4a429a46fbcf1ff745d5865ce05efd9ef0a1ccef45
AsyncRAT
ae55dc186e2373b964f1d84fd51aa7692fdb2994cc163128b97631c3ba7f7066
AsyncRAT
c6e74d13f05f11c8bda77a12154cc75b110cfccff566ee72106f80b302734565
AsyncRAT
error
AsyncRAT
f37f1b8929f08846a1f80ad0201a2ded2e90f831a169f8001363459570616644
AsyncRAT
+ 2'949 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default discovery rat
Link:
https://tria.ge/reports/241205-p8m2csvrbs/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
AsyncRat
Asyncrat family
Malware Config
C2 Extraction:
69.174.100.131:6606
Verdict:
Suspicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/15ff23b4-88f8-4ce9-ae49-ff09cd6343a3
Unpacked files
SH256 hash:
d873934ae172735ee6ac1fc6f43bcf254ed69244e497348b51bd5e5905de27b3
MD5 hash:
02190864ed79417b4f8a73a52480ac63
SHA1 hash:
555ec16a9c1409aa77240f8b3505f56a8366ca0f
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
win_asyncrat_bytecodes
Create hunting rule
win_asyncrat_unobfuscated
Create hunting rule
asyncrat
Create hunting rule
Link:
https://www.unpac.me/results/4f708f19-2e9c-4976-8b78-cb8f52da7c66/
Parent samples :
4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173
aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1
8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
SH256 hash:
4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
MD5 hash:
3a43f4d6c1ce25bc8efe548fa2b16bc7
SHA1 hash:
e0b8080d2c241ee9c8d7d31adb6ecc0fc43d0a0e
Link:
https://www.unpac.me/results/4f708f19-2e9c-4976-8b78-cb8f52da7c66/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b5cc1e99d28/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
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)

File information

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

Malspam

AsyncRAT

Executable exe 4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a

(this sample)

  
Delivery method
Distributed via e-mail attachment

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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