MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b43dece54a2995bfcbb99258d82f8afb2adf6c52ebf64fc2acea68e108164f8. 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: 15


Intelligence 15 IOCs 1 YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b43dece54a2995bfcbb99258d82f8afb2adf6c52ebf64fc2acea68e108164f8
SHA3-384 hash: b835777d7ec4f23d045282d2fe99ca65b4c2111a78c8ccdf4ae6f06796b1fafe157c008d668d19038e835ac1433fc829
SHA1 hash: b5ea929bbe79eb9f33fc9552f915c48c3685650c
MD5 hash: f732a2afc52f86e1bda36550f5e46b3d
humanhash: connecticut-oklahoma-charlie-september
File name:8ctx6R4pWO9beqW.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:495'104 bytes
First seen:2022-03-26 13:51:13 UTC
Last seen:2024-07-24 13:58:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:ju1Y3UwRGEuVYpdH9wED2TwA3KLb0yuyjUPZvJ:ju1Y3UwRGEuVYjdw93KX0yFjUlJ
Threatray 8'927 similar samples on MalwareBazaar
TLSH T101B47C71D2F8AF9BD53D93388031441677F5D922E334DA4EBEE910C65892BC24B36B1A
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
193.29.104.92:3579

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
193.29.104.92:3579 https://threatfox.abuse.ch/ioc/454289/

Intelligence

File Origin
# of uploads :
4
# of downloads :
344
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/258040/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.31926.14042.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
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
Launching a process
Creating a process from a recently created file
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/623f1a8b1f204239483221a0/reports/cb2e4f82-f22c-45ee-a5f9-87b2a6884b06/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.
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/32dd9746-7de8-4c0b-b5b9-2e30ec3712d8
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965088
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 AntiVM3
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 597569 Sample: 8ctx6R4pWO9beqW.exe Startdate: 26/03/2022 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 7 other signatures 2->49 9 8ctx6R4pWO9beqW.exe 3 2->9         started        process3 file4 35 C:\Users\user\...\8ctx6R4pWO9beqW.exe.log, ASCII 9->35 dropped 57 Injects a PE file into a foreign processes 9->57 13 8ctx6R4pWO9beqW.exe 6 9->13         started        signatures5 process6 file7 37 C:\Users\user\AppData\Roaming\pdf.exe, PE32 13->37 dropped 16 cmd.exe 1 13->16         started        18 cmd.exe 1 13->18         started        process8 signatures9 21 pdf.exe 3 16->21         started        24 conhost.exe 16->24         started        26 timeout.exe 1 16->26         started        51 Uses schtasks.exe or at.exe to add and modify task schedules 18->51 28 conhost.exe 18->28         started        30 schtasks.exe 1 18->30         started        process10 signatures11 53 Multi AV Scanner detection for dropped file 21->53 55 Machine Learning detection for dropped file 21->55 32 pdf.exe 2 21->32         started        process12 dnsIp13 39 193.29.104.92, 3579, 49803 M247GB Romania 32->39 41 192.168.2.1 unknown unknown 32->41
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b43dece54a2995bfcbb99258d82f8afb2adf6c52ebf64fc2acea68e108164f8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-26 13:52:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
28 of 42 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jnb55tsuukmvx7f3tesy3axyv6zk35wff27wj7bkz2ti4eebmt4a._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
AsyncRAT
465966504b71b61efd8b63c2b473115b51666d6e5beab1aad6f5da29fa82f2c5
AsyncRAT
5468fe6c4a8a65ed2e4e3c101c8fd0191b9773acc51ae61da6d446057958511b
AsyncRAT
8adeeedad895d174c55f2d43c1985ff77fc533975cfde64f8dfd99782e4c4b9f
AsyncRAT
8e3079b83ab70db97e2508e7a9a57a8a5ce124b1524c6a64867b5ff33edcbdca
AsyncRAT
959e3ca2579b6be8a11c06763c5a34ec118abc96d869e25bef06319c92da465e
AsyncRAT
a412a3bdf6e8891fa60734b53430db5d0ac8dce28a764fd013dd767614790c45
AsyncRAT
+ 8'917 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/220326-q6e4eaaadm/
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
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
193.29.104.92:3579
Unpacked files
SH256 hash:
8a1ad8cbd89be59d63a4d95b139da00fc09b1bee8d0cb18fd0478779c9aeb518
MD5 hash:
a1b46243edb3950c5f5092d6de0bc8b5
SHA1 hash:
ac9a7974c3020d9eef8713036aa2dc8dce243055
Link:
https://www.unpac.me/results/18ce40d5-4b90-4b78-94fd-a309c12f47d1/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/18ce40d5-4b90-4b78-94fd-a309c12f47d1/
SH256 hash:
2b5c673c3e4054aa9bfec321d4a52c6125f0e4953c4c466f93a86ef1b3501229
MD5 hash:
e996bf3e8b8d4161c3cdf5539faafa32
SHA1 hash:
3f757994c03d0c1f83e3f0356a6751f43d9e9a47
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/18ce40d5-4b90-4b78-94fd-a309c12f47d1/
SH256 hash:
4b43dece54a2995bfcbb99258d82f8afb2adf6c52ebf64fc2acea68e108164f8
MD5 hash:
f732a2afc52f86e1bda36550f5e46b3d
SHA1 hash:
b5ea929bbe79eb9f33fc9552f915c48c3685650c
Link:
https://www.unpac.me/results/18ce40d5-4b90-4b78-94fd-a309c12f47d1/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4b43dece54a2/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/4b43dece54a2995bfcbb99258d82f8afb2adf6c52ebf64fc2acea68e108164f8

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: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:MAL_AsnycRAT
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
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: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/258040/

Comments