MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36
SHA3-384 hash: 34f8d8e82125939e7a3967a4afb982ecc06cc90412a11ddc13acad86321e57b6b9ba0d29e0b6ee7957bec6b66c27c1b3
SHA1 hash: afecee20116234fb98d5ce66bb99dd71de43796c
MD5 hash: 6474c38705ed24203c4f2c1386465b97
humanhash: ink-emma-grey-charlie
File name:6474c38705ed24203c4f2c1386465b97
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'270'784 bytes
First seen:2022-12-05 14:31:31 UTC
Last seen:2022-12-05 16:35:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:m7Xw8/7fKSkzJNolKRASwx7IkN24DLbwTDzGPNPbegfKk7ZT1uQOXVtOt5kYgkmI:mP7iqlKDw+m24D0cbDZuQmS5kme
TLSH T1BF456B52B7B655D4E839C7F1143007204EA2FE299932933CAE6D30D8ABB779295D1B33
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon f6f9b5e6c486b3c9 (6 x Formbook, 6 x RemcosRAT, 4 x AgentTesla)
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
186
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
6474c38705ed24203c4f2c1386465b97
Verdict:
Malicious activity
Analysis date:
2022-12-05 14:43:41 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/f70233c3-1c99-4d7a-b667-60ab5ad94348

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/342961/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.48077.19566.5314.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/638e00e79a505ad9423d6ca8/reports/ef56d721-0c24-4d40-8bad-64560602c039/overview
Result
Verdict:
UNKNOWN
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/b17e3148-b2fe-4e6b-a087-72c4f954b5e4
Result
Threat name:
AsyncRAT, AveMaria, StormKitty
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1128151
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Disables UAC (registry)
Encrypted powershell cmdline option found
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Scheduled temp file as task from temp location
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
Very long command line found
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected AveMaria stealer
Yara detected BrowserPasswordDump
Yara detected Costura Assembly Loader
Yara detected StormKitty Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 760902 Sample: RvbszzLrKY.exe Startdate: 05/12/2022 Architecture: WINDOWS Score: 100 45 41.140.13.0.in-addr.arpa 2->45 47 ip-api.com 2->47 49 3 other IPs or domains 2->49 61 Malicious sample detected (through community Yara rule) 2->61 63 Sigma detected: Scheduled temp file as task from temp location 2->63 65 Multi AV Scanner detection for submitted file 2->65 67 12 other signatures 2->67 9 RvbszzLrKY.exe 6 2->9         started        13 sZXlqqpkmCl.exe 5 2->13         started        signatures3 process4 file5 39 C:\Users\user\AppData\...\sZXlqqpkmCl.exe, PE32 9->39 dropped 41 C:\Users\user\AppData\Local\...\tmp1D86.tmp, XML 9->41 dropped 43 C:\Users\user\AppData\...\RvbszzLrKY.exe.log, ASCII 9->43 dropped 69 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 9->69 71 Uses schtasks.exe or at.exe to add and modify task schedules 9->71 73 Writes to foreign memory regions 9->73 75 Injects a PE file into a foreign processes 9->75 15 MSBuild.exe 5 3 9->15         started        19 MSBuild.exe 9->19         started        21 schtasks.exe 1 9->21         started        77 Multi AV Scanner detection for dropped file 13->77 23 schtasks.exe 1 13->23         started        25 MSBuild.exe 13->25         started        27 MSBuild.exe 13->27         started        29 MSBuild.exe 13->29         started        signatures6 process7 dnsIp8 51 79.137.207.151, 4449, 49715, 49721 PSKSET-ASRU Russian Federation 15->51 53 Very long command line found 15->53 55 Encrypted powershell cmdline option found 15->55 57 Disables UAC (registry) 15->57 31 powershell.exe 3 15->31         started        59 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 19->59 33 conhost.exe 21->33         started        35 conhost.exe 23->35         started        signatures9 process10 process11 37 conhost.exe 31->37         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36/
Threat name:
ByteCode-MSIL.Trojan.SpySnake
Create hunting rule
Status:
Malicious
First seen:
2022-12-05 14:32:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kohyfdqgfo4cadezi5uyvkgvoka7wqo7mtrjxls5csh4hmuyhq3a._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
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Score:
  10/10
Tags:
family:asyncrat botnet:venom clients evasion rat
Link:
https://tria.ge/reports/221205-rwallshd33/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Looks for VMWare Tools registry key
Async RAT payload
Looks for VirtualBox Guest Additions in registry
AsyncRat
Malware Config
C2 Extraction:
79.137.207.151:4449
Unpacked files
SH256 hash:
a327516357b9fa1a75753b3fbd0030e13f374be7cefcdf983d0b731f278b0c59
MD5 hash:
404efdeb9931733904da07f96fabeb72
SHA1 hash:
7ce363cd612f1d9a90b33ec196c4d0a49cdaee02
Link:
https://www.unpac.me/results/d20ba7be-ef5f-43f0-9092-fc5179de10f2/
SH256 hash:
b31938ae22801437f7c522162a3c30b3a9813b460575a8e57c6e046ed792180c
MD5 hash:
59877edd1a302e3d1a27c6dedd67cfc8
SHA1 hash:
5a52a4d081aaea8b8fbdbdbd4d441f686f1680dd
Detections:
VenomRat
Create hunting rule
Link:
https://www.unpac.me/results/d20ba7be-ef5f-43f0-9092-fc5179de10f2/
SH256 hash:
f1da6bcad69624fa106e976d5bc29a691ac693ee0f1785d7320bb35225f9f428
MD5 hash:
aae34bf1e782dea4e2f677d853491e96
SHA1 hash:
35c3066bc659bf8e5f13054124bee390e1b025ac
Link:
https://www.unpac.me/results/d20ba7be-ef5f-43f0-9092-fc5179de10f2/
SH256 hash:
538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36
MD5 hash:
6474c38705ed24203c4f2c1386465b97
SHA1 hash:
afecee20116234fb98d5ce66bb99dd71de43796c
Link:
https://www.unpac.me/results/d20ba7be-ef5f-43f0-9092-fc5179de10f2/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/538f828e062b/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/538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

AsyncRAT

Executable exe 538f828e062bb8200c9947698aa8d57281fb41df64e29bae5d148fc3b2983c36

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2445001/
Cape
Cape
https://www.capesandbox.com/analysis/342961/

Comments


Avatar
zbet commented on 2022-12-05 14:31:34 UTC

url : hxxp://31.41.244.188/lego/TbGkI9UiVLucyjs.exe