MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6c245232ed76347213fe4242026ab0140cd6d94b7fca0f7e431a0cca49806b23. 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: 9


Intelligence 9 IOCs 1 YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6c245232ed76347213fe4242026ab0140cd6d94b7fca0f7e431a0cca49806b23
SHA3-384 hash: 4a6f2a7b0b67d41a69d9c5e483f7a64a5834dc60c849a3c6784c52dc951acb3692079d8950479a53c9a4e7b8b25c4149
SHA1 hash: 83c8873f5a49765e949c47caac10255f4df3dc21
MD5 hash: 4b434c45d7833330b6a182d9f3b6ac37
humanhash: william-carolina-mirror-california
File name:4B434C45D7833330B6A182D9F3B6AC37.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:86'760 bytes
First seen:2021-03-24 14:01:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'636 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 768:A+2pkc5ljBwwNpg9YVM7Sob55xlXslo/JfbHYaGfl7MvLukY6fGflvx/FIwJGunV:gpr5JBwwNpg9Y+7SobfYo/xbVBG37
Threatray 173 similar samples on MalwareBazaar
TLSH 1A83CEFE2D674EAACB9CF73A70917F42A160506AF4034C9697C542EBE412F5214E3C7A
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
179.43.140.164:8808

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
179.43.140.164:8808 https://threatfox.abuse.ch/ioc/5049/

Intelligence

File Origin
# of uploads :
1
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4B434C45D7833330B6A182D9F3B6AC37.exe
Verdict:
Malicious activity
Analysis date:
2021-03-24 23:47:53 UTC
Tags:
trojan rat asyncrat miner babylon
Link:
https://app.any.run/tasks/360a2ada-92d1-405b-a606-c5a61abfd59f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.135.3460.31847.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Moving a recently created file
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Launching a service
Deleting a recently created file
Launching a process
Creating a file in the Windows subdirectories
Creating a window
Running batch commands
Unauthorized injection to a recently created process
Setting a single autorun event
Blocking the User Account Control
Adding exclusions to Windows Defender
Enabling autorun by creating a file
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:
Unknown
Detection:
malicious
Classification:
adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/652304
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Binary contains a suspicious time stamp
Changes security center settings (notifications, updates, antivirus, firewall)
Creates an autostart registry key pointing to binary in C:\Windows
Drops PE files to the startup folder
Drops PE files with benign system names
Hides threads from debuggers
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
Sigma detected: Powershell adding suspicious path to exclusion list
Tries to delay execution (extensive OutputDebugStringW loop)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 375098 Sample: A4r4h0erd0.exe Startdate: 24/03/2021 Architecture: WINDOWS Score: 100 50 jejendjcjfhh.com 2->50 62 Antivirus detection for URL or domain 2->62 64 Multi AV Scanner detection for dropped file 2->64 66 Sigma detected: Powershell adding suspicious path to exclusion list 2->66 68 4 other signatures 2->68 8 A4r4h0erd0.exe 24 16 2->8         started        13 svchost.exe 2->13         started        15 FQKyLuLh.exe 2->15         started        17 7 other processes 2->17 signatures3 process4 dnsIp5 56 jejendjcjfhh.com 104.21.22.219, 49691, 80 CLOUDFLARENETUS United States 8->56 58 172.67.207.35, 443, 49692, 49719 CLOUDFLARENETUS United States 8->58 42 C:\Windows\Resources\Themes\...\svchost.exe, PE32 8->42 dropped 44 C:\Users\user\AppData\...\FQKyLuLh.exe, PE32 8->44 dropped 46 C:\Windows\...\svchost.exe:Zone.Identifier, ASCII 8->46 dropped 48 3 other files (2 malicious) 8->48 dropped 70 Drops PE files to the startup folder 8->70 72 Creates an autostart registry key pointing to binary in C:\Windows 8->72 74 Adds a directory exclusion to Windows Defender 8->74 78 3 other signatures 8->78 19 AdvancedRun.exe 1 8->19         started        22 FQKyLuLh.exe 8->22         started        24 cmd.exe 8->24         started        26 11 other processes 8->26 76 Changes security center settings (notifications, updates, antivirus, firewall) 13->76 60 127.0.0.1 unknown unknown 17->60 file6 signatures7 process8 dnsIp9 52 192.168.2.1 unknown unknown 19->52 28 AdvancedRun.exe 19->28         started        54 jejendjcjfhh.com 22->54 30 conhost.exe 24->30         started        32 timeout.exe 24->32         started        34 conhost.exe 26->34         started        36 conhost.exe 26->36         started        38 conhost.exe 26->38         started        40 5 other processes 26->40 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6c245232ed76347213fe4242026ab0140cd6d94b7fca0f7e431a0cca49806b23/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-03-19 10:38:11 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nqsfemxnoy2hee76ijbae2vqcqgnnwklp7fa67sddigmusmanmrq._file
Verdict:
malicious
Similar samples:
1a2beaadeb5f9bc79af30c8a9e458bff69d4b481b305451afe68d0f1a9074da1
AsyncRAT
2760abb67bdb754b7e7878df83549c332785054b337800e7598a4f394a81da12
AsyncRAT
3afef4ab289c49f347ed065f4d272cec7ea413b5c84fb4c2e6aa9adad2716db6
AsyncRAT
5abccf199b1e503db7c810a9dcbe1310b6a6b78441b091dae6f45c92d3c3add1
AsyncRAT
65a37fc31e46339de5ede41f1976ee5860f9c54573a510b6a73789c9ece66588
AsyncRAT
766aab7b9f0e374b2e8810bf5c3e2c60aa28fa968112dff3634bbdbdc3f0a490
AsyncRAT
9e6fdb6456dfaf737767adb44ebdb84910cec8be91a12c2b7a37c84b5aed6104
AsyncRAT
a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8
AsyncRAT
c73b434afd1074cd367b181cedd3cb55e69bb5d12594c3d2101d0b87c56e1013
AsyncRAT
d6b54e921467dd688dc63b3019654168fd7e72fb0b902e9b08f8c0c3337af388
AsyncRAT
+ 163 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat evasion rat trojan
Link:
https://tria.ge/reports/210324-4r7pg4s2s6/
Behaviour
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Legitimate hosting services abused for malware hosting/C2
Drops startup file
Loads dropped DLL
Uses the VBS compiler for execution
Windows security modification
Executes dropped EXE
Async RAT payload
Nirsoft
AsyncRat
Modifies Windows Defender Real-time Protection settings
Turns off Windows Defender SpyNet reporting
Windows security bypass
Malware Config
C2 Extraction:
null:null
Unpacked files
SH256 hash:
6c245232ed76347213fe4242026ab0140cd6d94b7fca0f7e431a0cca49806b23
MD5 hash:
4b434c45d7833330b6a182d9f3b6ac37
SHA1 hash:
83c8873f5a49765e949c47caac10255f4df3dc21
Link:
https://www.unpac.me/results/9bba80ad-4ba1-4d87-ba51-13e0f71e931e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.10
Link:
https://yomi.yoroi.company/submissions/6c245232ed76347213fe4242026ab0140cd6d94b7fca0f7e431a0cca49806b23

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:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
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.

Comments