MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192. 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: 14


Intelligence 14 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192
SHA3-384 hash: ed46332f6b414d6dfe8052d945c5b7b07bb8b71998b4327825d44ac855960f7acb82527e4a24ca8f547b93bf710463a7
SHA1 hash: a8eaa92edf7713d96c9d93398a0a051456190b8d
MD5 hash: 52e216ccbdc8d26c1eb99cb9920a9eb6
humanhash: lithium-angel-autumn-north
File name:52e216ccbdc8d26c1eb99cb9920a9eb6.bin.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:48'640 bytes
First seen:2024-04-22 04:10:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'796 x AgentTesla, 19'695 x Formbook, 12'276 x SnakeKeylogger)
ssdeep 768:Quir1TUEFSuWUoV3kmo2qzkrmyUN7bGK3dPIRwnj420b+548phyFxcCCRD37MdBI:Quir1TUKP2JFUN3GnqnEZb+54WoQRkzI
Threatray 2'941 similar samples on MalwareBazaar
TLSH T108233C003BED823BF27E4F7898F262458576F2673602D5492CC451DB5A23FC69A425FE
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
194.26.192.196:1610

Intelligence

File Origin
# of uploads :
1
# of downloads :
394
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
Creating a process from a recently created file
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat config-extracted lolbin masquerade njrat reg schtasks
Link:
https://www.filescan.io/uploads/6625e35654bafb7d21d83fb0/reports/76e9817e-84c9-4606-8838-70e796bd41ef/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192
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/3c0b8f97-d9b4-4045-b5f2-0b0c3f88e0df
Result
Threat name:
AsyncRAT, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1429428
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1429428 Sample: LM3a8tBhVn.exe Startdate: 22/04/2024 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 9 other signatures 2->39 7 hostvc.exe 2 2 2->7         started        11 LM3a8tBhVn.exe 7 2->11         started        process3 dnsIp4 31 194.26.192.196, 1610, 49705, 49715 HEANETIE Netherlands 7->31 41 Antivirus detection for dropped file 7->41 43 Multi AV Scanner detection for dropped file 7->43 45 Machine Learning detection for dropped file 7->45 29 C:\Users\user\AppData\Roaming\hostvc.exe, PE32 11->29 dropped 14 cmd.exe 1 11->14         started        17 cmd.exe 1 11->17         started        file5 signatures6 process7 signatures8 47 Uses schtasks.exe or at.exe to add and modify task schedules 14->47 19 conhost.exe 14->19         started        21 schtasks.exe 1 14->21         started        23 hostvc.exe 3 17->23         started        25 conhost.exe 17->25         started        27 timeout.exe 1 17->27         started        process9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-04-22 04:11:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wksgupulcamlua6cv3ti4nadgweipiyx27pgzufflo2gpehakgja._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
06964dd3189bad530f3e1f1b866ccd300672eac8d3889ff327724927770b0389
AsyncRAT
13f53967b03017371c9385a4266b5f3169afe48e933a5cbbf95f24843c05f376
AsyncRAT
34619b02688a538cf3bec776233ced7001f09307e4a4d231fc0f14330ec938b6
AsyncRAT
3ae8d263abd33819980c81f1e0b6b876f06e5747807459e82a47fd518767358e
AsyncRAT
4a72f887ce916e9eaef552c54fdcdc51dd610b3b5c92528956341281bdcbed82
AsyncRAT
8545fedaeb113fdb4000b3f6a8d0f0f4694f9198203086a7d1230385a5180f78
AsyncRAT
85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
AsyncRAT
8737b9c5969931c61500427c301c40e635acec433bd4450e1dca9f202e97fb6f
AsyncRAT
+ 2'931 additional samples on MalwareBazaar
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:zgrat botnet:default rat
Link:
https://tria.ge/reports/240422-erxt5afc73/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops desktop.ini file(s)
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Async RAT payload
ZGRat
AsyncRat
Detect ZGRat V1
Malware Config
C2 Extraction:
194.26.192.196:1610
Unpacked files
SH256 hash:
b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192
MD5 hash:
52e216ccbdc8d26c1eb99cb9920a9eb6
SHA1 hash:
a8eaa92edf7713d96c9d93398a0a051456190b8d
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
asyncrat
Create hunting rule
Link:
https://www.unpac.me/results/36867c89-8265-4f2b-9b01-12f78a04b4c2/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b2a46a3e8b10/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:malware_asyncrat
Create hunting rule
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
Create hunting rule
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: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_Reverse_Run_Key
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
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.

Web download

AsyncRAT

Executable exe b2a46a3e8b1018ba03c2aee68e3403358887a317d7de6cd0a55bb46790e05192

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2821375/
  
Delivery method
Distributed via web download

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

Comments