MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb. 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 YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb
SHA3-384 hash: bcefd3158f84d6e1b1335121278dc87767813fead528969a45fe5d06d8ede2f4e7d4bb3d805f5c380acbfc24831e1ea8
SHA1 hash: a3f87335a4af63df3b52116893fb2a07c651b444
MD5 hash: 1ec82838e7c64f8c6386ec8573c2df72
humanhash: pip-salami-carbon-robert
File name:Invoice #17102022.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:588'800 bytes
First seen:2022-10-24 22:52:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:nvsoYcTR4IDeY4Q3RvXR65ZIGM4qqh32ob8qGlqNVy8+Q7y+7CezU+ySPQ85CPxx:0oAyD3R/4Isq22+Gl98+oSxUzFew+
TLSH T10CC4AE84BBDC8616E4EB0373B97181418F75E571D2A7EB8FB8E011BE0C92724995237B
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter r3dbU7z
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
251
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
Invoice #17102022.exe
Verdict:
Malicious activity
Analysis date:
2022-10-24 22:54:23 UTC
Tags:
trojan asyncrat
Link:
https://app.any.run/tasks/0895f409-0224-4840-96ff-5a4dfd6a5773

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/323678/
Detection(s):
SecuriteInfo.com.BackDoor.AsyncRATNET.2.27515.26504.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
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.
Malware family:
DCRat
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2586d9e6-5b56-4aea-8578-91785fd9c7a6
Result
Threat name:
AsyncRAT, DcRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1097091
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 729732 Sample: Invoice #17102022.exe Startdate: 25/10/2022 Architecture: WINDOWS Score: 100 53 Snort IDS alert for network traffic 2->53 55 Multi AV Scanner detection for domain / URL 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 10 other signatures 2->59 9 Invoice #17102022.exe 1 2->9         started        13 service.exe 1 2->13         started        process3 file4 43 C:\Users\user\...\Invoice #17102022.exe.log, ASCII 9->43 dropped 63 Injects a PE file into a foreign processes 9->63 15 Invoice #17102022.exe 6 9->15         started        18 service.exe 2 13->18         started        20 service.exe 13->20         started        signatures5 process6 file7 45 C:\Users\user\AppData\Roaming\service.exe, PE32 15->45 dropped 22 cmd.exe 1 15->22         started        24 cmd.exe 1 15->24         started        process8 signatures9 27 service.exe 22->27         started        30 conhost.exe 22->30         started        32 timeout.exe 1 22->32         started        61 Uses schtasks.exe or at.exe to add and modify task schedules 24->61 34 conhost.exe 24->34         started        36 schtasks.exe 1 24->36         started        process10 signatures11 65 Injects a PE file into a foreign processes 27->65 38 service.exe 1 2 27->38         started        41 service.exe 27->41         started        process12 dnsIp13 47 18.189.106.45, 13405, 49700 AMAZON-02US United States 38->47 49 6.tcp.ngrok.io 3.141.177.1, 15258, 49696 AMAZON-02US United States 38->49 51 4 other IPs or domains 38->51
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-10-24 23:11:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7xz7oo2eja6adavxdyoxvmlln6by6smbpyd7dlqhjb7tgzbfpnq._file
Verdict:
malicious
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/221024-2tykrsaher/
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
Malware Config
C2 Extraction:
0.tcp.ngrok.io:8848
0.tcp.ngrok.io:15258
0.tcp.ngrok.io:13405
6.tcp.ngrok.io:8848
6.tcp.ngrok.io:15258
6.tcp.ngrok.io:13405
Unpacked files
SH256 hash:
0dd77bb704ffe958572142ce0c8d8c54c88e7469ca0896efd11268ad0170922a
MD5 hash:
c87add6179a02922fa45a72e278dcad9
SHA1 hash:
b0daf78890fb0b9769b29ac3937e834536822714
Link:
https://www.unpac.me/results/64e0260d-232d-4776-9411-a1b4681c7245/
SH256 hash:
4a63eaeb413f95abc5e117f5ad158c01e83c407296b4ab916d96044410d10c08
MD5 hash:
cadba6e57d209d39c2d0c380feb4ebee
SHA1 hash:
90698face9b45636c6da426122485138462f842d
Link:
https://www.unpac.me/results/64e0260d-232d-4776-9411-a1b4681c7245/
SH256 hash:
3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb
MD5 hash:
1ec82838e7c64f8c6386ec8573c2df72
SHA1 hash:
a3f87335a4af63df3b52116893fb2a07c651b444
Link:
https://www.unpac.me/results/64e0260d-232d-4776-9411-a1b4681c7245/
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/3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb

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_SUSPICIOUS_EXE_B64_Artifacts
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.
Rule name:INDICATOR_SUSPICIOUS_EXE_DcRatBy
Create hunting rule
Author:ditekSHen
Description:Detects executables containing the string DcRatBy
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:MAL_AsnycRAT
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

AsyncRAT

Executable exe 3fef9fb9da2241e00c15b8f0ebd58b5b7c1c7a4c0bf03f8d703a43f99b212bdb

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/323678/

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