MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf. 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: 16


Intelligence 16 IOCs YARA 27 File information Comments
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SHA256 hash: 8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
SHA3-384 hash: 2397be50b39087f8ae3a5f919d7ad65f4357bef00fb400912e00313438291f8a3cd1d23aab8ccb7a5c9d16c6b87fc005
SHA1 hash: bc21190df092d93629068c705ea8dc630d3db4a4
MD5 hash: bc18b6803a287e63b3668b5817f12419
humanhash: bluebird-oven-hamper-california
File name:8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
Download: download sample
Signature AsyncRAT
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File size:967'680 bytes
First seen:2025-01-10 14:31:44 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:nu6J33O0c+JY5UZ+XC0kGso6FaNXpPkMeCWY:hu0c++OCvkGs9FaNhkZY
TLSH T11E25AD2273DDC360CB669173BF6AB7016EBF7C614630B85B2F880D7DA950162162D7A3
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 adrian__luca
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
Verdict:
Malicious activity
Analysis date:
2025-01-10 17:57:36 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/9f726aac-2201-4622-ad2b-df1bb0ce3e6d

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:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67812f9a1e9cdec7dbbb753a
Tags:
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 to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug asyncrat autoit compiled-script evasive explorer fingerprint fingerprint hacktool keylogger lolbin microsoft_visual_cc mmc monero packed packed packer_detected
Link:
https://www.filescan.io/uploads/67812f8510df0fde5dd4157a/reports/31c0d888-8b34-4dd1-8beb-dbaa5788e0c0/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
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/48d028e3-d1b6-4252-9389-bd5af98eb65d
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1588713
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 dnsIp2 2 Behavior Graph ID: 1588713 Sample: egpTyFpA8v.exe Startdate: 11/01/2025 Architecture: WINDOWS Score: 100 29 time.windows.com 2->29 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 8 other signatures 2->39 8 egpTyFpA8v.exe 4 2->8         started        12 wscript.exe 1 2->12         started        signatures3 process4 file5 25 C:\Users\user\AppData\Local\...\Wausaukee.exe, PE32 8->25 dropped 41 Binary is likely a compiled AutoIt script file 8->41 43 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->43 14 Wausaukee.exe 2 8->14         started        45 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->45 18 Wausaukee.exe 1 12->18         started        signatures6 process7 file8 27 C:\Users\user\AppData\...\Wausaukee.vbs, data 14->27 dropped 47 Multi AV Scanner detection for dropped file 14->47 49 Binary is likely a compiled AutoIt script file 14->49 51 Machine Learning detection for dropped file 14->51 59 2 other signatures 14->59 20 RegSvcs.exe 2 14->20         started        53 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 18->53 55 Writes to foreign memory regions 18->55 57 Maps a DLL or memory area into another process 18->57 23 RegSvcs.exe 3 18->23         started        signatures9 process10 dnsIp11 31 69.174.100.131, 49799, 49970, 49972 ASN-QUADRANET-GLOBALUS United States 20->31
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf/
Threat name:
Win32.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-12-03 07:53:30 UTC
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=r5bndydvswaikrho2gfel2gxeig76qczpvgvhuhwh6vuovkk7ppq._file
Result
Malware family:
asyncrat
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Score:
  10/10
Tags:
family:asyncrat botnet:default discovery rat
Link:
https://tria.ge/reports/250110-rwa75sxjbx/
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
Loads dropped DLL
AsyncRat
Asyncrat family
Malware Config
C2 Extraction:
69.174.100.131:6606
Verdict:
Malicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/fd5852d8-cd17-4b0b-967d-76dc815f6131
Unpacked files
SH256 hash:
d873934ae172735ee6ac1fc6f43bcf254ed69244e497348b51bd5e5905de27b3
MD5 hash:
02190864ed79417b4f8a73a52480ac63
SHA1 hash:
555ec16a9c1409aa77240f8b3505f56a8366ca0f
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
asyncrat
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win_asyncrat_bytecodes
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win_asyncrat_unobfuscated
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INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Link:
https://www.unpac.me/results/3fea0e4f-478e-49b6-bb2f-985ee700beda/
Parent samples :
4b5cc1e99d28651fbb693422c5d392c5d47dfa61c8ec4995197706de5cb3442a
18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173
aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1
8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
SH256 hash:
8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf
MD5 hash:
bc18b6803a287e63b3668b5817f12419
SHA1 hash:
bc21190df092d93629068c705ea8dc630d3db4a4
Link:
https://www.unpac.me/results/3fea0e4f-478e-49b6-bb2f-985ee700beda/
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/8f42d1e07595808544eed18a45e8d7220dff40597d4d53d0f63fab47554afbdf

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:AsyncRat
Create hunting rule
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:asyncrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
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:DebuggerCheck__RemoteAPI
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_EXE_ASEP_REG_Reverse
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Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
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Description:detect AsyncRat in memory
Reference:https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
Rule name:MAL_AsnycRAT
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:msil_suspicious_use_of_strreverse
Create hunting rule
Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Rule name:Multifamily_RAT_Detection
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Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
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:SUSP_Reverse_Run_Key
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
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:Windows_Generic_Threat_ce98c4bc
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Asyncrat_11a11ba1
Create hunting rule
Author:Elastic Security
Rule name:win_asyncrat_bytecodes
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytecodes present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

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
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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