MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 17d1c0045155ad9c523c07e0f37aa16cd036915f38b73090d8d8ba930db149fb. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments

SHA256 hash: 17d1c0045155ad9c523c07e0f37aa16cd036915f38b73090d8d8ba930db149fb
SHA3-384 hash: b94f81b35caad93b396368e084af211b59f5db891171c4de6015b7b520f929f77ef8eb282750754888b51af4c7feb9b1
SHA1 hash: 7ba5b175ffb4bb976c54177f9c40a7339a088654
MD5 hash: 432f0e0aab658de046d8b41d2cef8253
humanhash: earth-sodium-april-coffee
File name:ASTRO-GREP.bin
Download: download sample
Signature AsyncRAT
File size:48'640 bytes
First seen:2021-07-19 18:06:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (29'902 x AgentTesla, 9'527 x Formbook, 4'666 x SnakeKeylogger)
ssdeep 768:quCFNTAolrhWU5TeLmo2qrJW6K8e2gaM9PIItc5pIX0byDBm1ERjvmFq+YBDZsx:quCFNTA2G2d6K5aM6Itc5pIEbyAqRzyX
Threatray 1'032 similar samples on MalwareBazaar
TLSH T180233C003BE9812BF2BE4F74A9F23245857BF2673502DA4E1CC442975B13FC69A525EE
Reporter @BushidoToken
Tags:Astro Grep AsyncRAT exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
100
Origin country :
GB GB
Mail intelligence
No data
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
astro-grep.exe
Verdict:
Malicious activity
Analysis date:
2021-07-17 12:34:49 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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.
Result
Threat name:
AsyncRAT
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Connects to a pastebin service (likely for C&C)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 450881 Sample: ASTRO-GREP.bin Startdate: 19/07/2021 Architecture: WINDOWS Score: 100 35 Antivirus / Scanner detection for submitted sample 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 Yara detected AsyncRAT 2->39 41 4 other signatures 2->41 7 ASTRO-GREP.exe 7 2->7         started        11 astro-grep.exe 15 2 2->11         started        process3 dnsIp4 29 C:\Users\user\AppData\...\astro-grep.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\...\ASTRO-GREP.exe.log, ASCII 7->31 dropped 43 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->43 14 cmd.exe 1 7->14         started        17 cmd.exe 1 7->17         started        33 pastebin.com 104.23.99.190, 443, 49764 CLOUDFLARENETUS United States 11->33 45 Antivirus detection for dropped file 11->45 47 Multi AV Scanner detection for dropped file 11->47 49 Machine Learning detection for dropped file 11->49 file5 signatures6 process7 signatures8 51 Uses schtasks.exe or at.exe to add and modify task schedules 14->51 19 conhost.exe 14->19         started        21 schtasks.exe 1 14->21         started        23 astro-grep.exe 2 17->23         started        25 conhost.exe 17->25         started        27 timeout.exe 1 17->27         started        process9
Threat name:
ByteCode-MSIL.Trojan.SemperDotNet
Status:
Malicious
First seen:
2021-07-17 20:37:45 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
37 of 46 (80.43%)
Threat level:
  5/5
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat rat
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
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
null:null
Unpacked files
SH256 hash:
17d1c0045155ad9c523c07e0f37aa16cd036915f38b73090d8d8ba930db149fb
MD5 hash:
432f0e0aab658de046d8b41d2cef8253
SHA1 hash:
7ba5b175ffb4bb976c54177f9c40a7339a088654
Detections:
win_asyncrat_w0

YARA Signatures


MalareBazaar uses YARA rules from several public and non-public repositories, such as Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious proccess dumps they may create. Please note that only results from TLP:WHITE rules are being displayeyd.

Rule name:asyncrat
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_asyncrat_j1
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
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.

AsyncRAT

Executable exe 17d1c0045155ad9c523c07e0f37aa16cd036915f38b73090d8d8ba930db149fb

(this sample)

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