MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23c676396b93ab7975fc087f45acf33d9022a8cba1e8b3ff32191c54e4c6a781. 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 1 YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23c676396b93ab7975fc087f45acf33d9022a8cba1e8b3ff32191c54e4c6a781
SHA3-384 hash: 45f3e1f81461b34308d9a6c0f63b2e81ee24fbb16eab6e41b2651f2d1fa072496508042b56a22ec6242d0c1f7c59bb76
SHA1 hash: b45d1a6ffbac0349ea28dbf6bf46b92bc3720f88
MD5 hash: e84f211739112cc6881cc583bc6e695c
humanhash: magnesium-tango-steak-island
File name:e84f211739112cc6881cc583bc6e695c.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:446'976 bytes
First seen:2022-02-27 10:00:56 UTC
Last seen:2022-02-27 12:26:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'473 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:W9xfpaX+dttzzTWsz3LwThffshI96AbvK7gfBF8bPFE9ZjaTeTx8vi3u6:W9xfpaudttoiiqgflPe
Threatray 7'463 similar samples on MalwareBazaar
TLSH T1E3945E2CFF419AB2FC2DC1714D7E29457F622B0763807A9A23DB11DA874FE625D09C98
File icon (PE):PE icon
dhash icon e0e1f9d2e1fbfbdf (1 x AsyncRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
141.255.144.117:2000

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
141.255.144.117:2000 https://threatfox.abuse.ch/ioc/391120/

Intelligence

File Origin
# of uploads :
2
# of downloads :
326
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/245073/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.26832.19368.15833.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Launching a process
Using the Windows Management Instrumentation requests
Running batch commands
Sending a custom TCP request
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/621b4be10cd58dbd924a24f6/reports/c060318f-47cb-4d8f-876c-088026522c6d/overview
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/82738e0b-0d79-41a5-a0a8-5e0f6c76209c
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/946910
Signature
.NET source code contains potential unpacker
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Injects a PE file into a foreign processes
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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicius Schtasks From Env Var Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 579392 Sample: CVnnUnRrmX.exe Startdate: 27/02/2022 Architecture: WINDOWS Score: 100 53 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->53 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 12 other signatures 2->59 7 CVnnUnRrmX.exe 2 2->7         started        10 Windowsn Utility.exe 2 2->10         started        process3 signatures4 61 Tries to delay execution (extensive OutputDebugStringW loop) 7->61 63 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->63 12 cmd.exe 3 7->12         started        15 cmd.exe 2 7->15         started        18 RegAsm.exe 1 2 7->18         started        21 cmd.exe 1 7->21         started        65 Writes to foreign memory regions 10->65 67 Injects a PE file into a foreign processes 10->67 23 cmd.exe 10->23         started        25 cmd.exe 1 10->25         started        27 cmd.exe 10->27         started        29 RegAsm.exe 3 10->29         started        process5 dnsIp6 47 C:\Users\user\...\Windowsn Utility.exe, PE32 12->47 dropped 49 C:\...\Windowsn Utility.exe:Zone.Identifier, ASCII 12->49 dropped 31 conhost.exe 12->31         started        69 Uses schtasks.exe or at.exe to add and modify task schedules 15->69 33 conhost.exe 15->33         started        51 znets.ddns.net 141.255.144.117, 2000, 49731, 49762 IELOIELOMainNetworkFR France 18->51 35 conhost.exe 21->35         started        37 schtasks.exe 1 21->37         started        39 conhost.exe 23->39         started        41 schtasks.exe 1 23->41         started        43 conhost.exe 25->43         started        45 conhost.exe 27->45         started        file7 signatures8 process9
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/23c676396b93ab7975fc087f45acf33d9022a8cba1e8b3ff32191c54e4c6a781/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-26 15:43:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
29 of 42 (69.05%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=epdhmollsovxs5p4bb7ullhthwicfkgluhulh7zsdeofjzggu6aq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef
AsyncRAT
6776c42da9ff39df7f76649d5ad287ff628790e84c7bebf325cb9b8c2e74aeb2
AsyncRAT
91512a6af5a6f62bd3348e28a4920a88bdaed4732ca9afcb956f0ca8c16d734f
AsyncRAT
a33dd2658212f8f7ceeb024170cd70668410dfb1b50d1696f46e114b057dbc12
AsyncRAT
ac601a34b6e00a6409580aa29283f241b44a33785757354c846b3df4a3bf676f
AsyncRAT
c92748428af1806d4ecc702bce8ad9abcac6b738e7208d3586450cb4944a87a9
AsyncRAT
f20d2b9da240b7cadb6045a4152636c7cb71b13204aaae35e4a927aaeab23520
AsyncRAT
+ 7'453 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat suricata
Link:
https://tria.ge/reports/220227-l175saddcq/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Executes dropped EXE
Async RAT payload
AsyncRat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
znets.ddns.net:2000
Unpacked files
SH256 hash:
9343aeaa818d8843fa8cfbde7a789df2b58f2ae8f404ae126557cdb3d61e1867
MD5 hash:
b586f3c2b8fd9e4701ef6ef342bcb6a5
SHA1 hash:
04dc4ca99f50ebd27e13592199b1f627871ed587
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/1df496a8-dd94-46f7-b9ae-5e4e18d25e7e/
SH256 hash:
23c676396b93ab7975fc087f45acf33d9022a8cba1e8b3ff32191c54e4c6a781
MD5 hash:
e84f211739112cc6881cc583bc6e695c
SHA1 hash:
b45d1a6ffbac0349ea28dbf6bf46b92bc3720f88
Link:
https://www.unpac.me/results/1df496a8-dd94-46f7-b9ae-5e4e18d25e7e/
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/23c676396b93ab7975fc087f45acf33d9022a8cba1e8b3ff32191c54e4c6a781

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:jeFF0Falltrades
Rule name:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Cape
Cape
https://www.capesandbox.com/analysis/245073/

Comments