MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87
SHA3-384 hash: 5859dfc4ba3bcf17e6d3fc93c276ed259276e1e301e8a0a6592ce309bac8d200e4dc1ec6bcbff9a590153d7de8affd9d
SHA1 hash: 71bfea6663dbfc06e228113e44723e91bf46f619
MD5 hash: 1f90ecea05ef9adfaa814d95a750f4ef
humanhash: lake-fish-paris-virginia
File name:SecuriteInfo.com.W32.AIDetectNet.01.4166.15764
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:53'760 bytes
First seen:2022-07-06 17:39:24 UTC
Last seen:2022-07-07 13:43:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:wQxh9EVZgCnQeTF4Fs5p6+2KW0sR06iM:dMFQeTF4AxWBe6V
TLSH T197336D817344836DDCAB843664D381610771AEF1DE3A47CB30D8773F6CB69661922397
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 60e0e69e96c6de00 (3 x DarkVisionRAT, 2 x GuLoader, 1 x Loki)
Reporter SecuriteInfoCom
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
11
# of downloads :
230
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Voicemail Message (WIRELESS CALLER info) From(289-110-6456).msg
Verdict:
Malicious activity
Analysis date:
2022-07-06 20:33:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/659b6294-d715-45f0-8c24-ff8c9ebfd5b1

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/285230/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.4166.15764.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62c5c8f6dd037e270334590a/reports/25ff101f-cccb-432d-b005-301ee8a0a0f9/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:
Unknown
Link:
https://analyze.intezer.com/analyses/bfea7019-274b-4165-9cb8-125a089b2f01
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1025815
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
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 domain / URL
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 658310 Sample: SecuriteInfo.com.W32.AIDete... Startdate: 06/07/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 12 other signatures 2->53 7 SecuriteInfo.com.W32.AIDetectNet.01.4166.exe 16 7 2->7         started        12 Xhaienfx.exe 2->12         started        14 Xhaienfx.exe 2->14         started        process3 dnsIp4 45 3sixtyd.nl 91.192.37.9, 49736, 49829, 49855 CJ2-ASNL Netherlands 7->45 35 C:\Users\user\AppData\...\Xhaienfx.exe, PE32 7->35 dropped 37 C:\Users\...\Xhaienfx.exe:Zone.Identifier, ASCII 7->37 dropped 39 SecuriteInfo.com.W...Net.01.4166.exe.log, ASCII 7->39 dropped 55 Encrypted powershell cmdline option found 7->55 57 Writes to foreign memory regions 7->57 59 Allocates memory in foreign processes 7->59 61 Injects a PE file into a foreign processes 7->61 16 InstallUtil.exe 2 7->16         started        19 powershell.exe 20 7->19         started        21 powershell.exe 18 7->21         started        63 Machine Learning detection for dropped file 12->63 23 powershell.exe 12->23         started        25 powershell.exe 14->25         started        file5 signatures6 process7 dnsIp8 41 severdops.ddns.net 62.197.136.69, 49830, 6204 SPRINTLINKUS Netherlands 16->41 43 192.168.2.1 unknown unknown 16->43 27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        31 conhost.exe 23->31         started        33 conhost.exe 25->33         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87/
Threat name:
Win32.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2022-07-06 17:40:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
15 of 26 (57.69%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j43ef43olorcv3addljagsjabm4rct63i4fxqjd7dqnfmjqunkdq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence rat suricata
Link:
https://tria.ge/reports/220706-v8vdbsfdgr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
AsyncRat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
Unpacked files
SH256 hash:
4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87
MD5 hash:
1f90ecea05ef9adfaa814d95a750f4ef
SHA1 hash:
71bfea6663dbfc06e228113e44723e91bf46f619
Link:
https://www.unpac.me/results/b72eb5f3-799b-47d4-9665-32ff7f596ff9/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f3642f36e5b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Create hunting rule
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.

Malspam

AsyncRAT

img 200df27c79208a2811eb83a32fe7fb35a122334b4859a8f4bf74b63a4011921e

AsyncRAT

Executable exe 4f3642f36e5ba22aec031ad20349200b39114fdb470b78247f1c1a5626146a87

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/285230/
  
Dropped by
SHA256 200df27c79208a2811eb83a32fe7fb35a122334b4859a8f4bf74b63a4011921e
  
Dropped by
MD5 07fc400c6d27c8e722361db4f2a1e635

Comments