MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9
SHA3-384 hash: a920933e25a2f76bcc668afebe8b2fb737a4056ecc47dee40d3f2684634a92c50835253a6ec7fd6bd7c7c83b9c051ca2
SHA1 hash: 1c8dc69446dcdc21106a534d7caf58ce02b5a540
MD5 hash: 8891cce38c5626bbe9a912f6382d8d8e
humanhash: low-montana-fish-monkey
File name:8891cce38c5626bbe9a912f6382d8d8e.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:504'832 bytes
First seen:2022-04-28 07:01:34 UTC
Last seen:2022-04-28 07:41:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:DPg9mbKi0ZfSSw7qVjfIjm/8h49B4jSMfy4el4AXrj:DPRbQZfSxWwy74jSM5elz
TLSH T16DB438CA63E9F81AC13E37B0F548B910C3A196C7D6E6AB1B44D490D677762D42BE01B3
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 62f2f27070a4c8f0 (1 x AsyncRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
317
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/267461/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.11034.28410.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Сreating synchronization primitives
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Running batch commands
Creating a process with a hidden window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed update.exe vbc.exe
Link:
https://www.filescan.io/uploads/626a3bfba796b19348f8a9cd/reports/f832c1c3-f75a-47e2-b154-da30966bc8c9/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.
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bb53a3fa-36a7-45e2-bef1-ba3f43fac178
Result
Threat name:
AgentTesla AsyncRAT DcRat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/984593
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Script Execution From Temp Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 617086 Sample: 85nECQIP87.exe Startdate: 28/04/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 9 other signatures 2->53 10 85nECQIP87.exe 4 2->10         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 10->35 dropped 37 C:\Users\user\AppData\...\85nECQIP87.exe.log, ASCII 10->37 dropped 67 Writes to foreign memory regions 10->67 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->69 71 Injects a PE file into a foreign processes 10->71 14 RegAsm.exe 3 4 10->14         started        signatures5 process6 dnsIp7 45 45.137.22.41, 4449, 49742, 49750 ROOTLAYERNETNL Netherlands 14->45 39 C:\Users\user\AppData\Local\Temp\AFILE.exe, PE32 14->39 dropped 18 cmd.exe 1 14->18         started        file8 process9 signatures10 55 Suspicious powershell command line found 18->55 57 Bypasses PowerShell execution policy 18->57 21 powershell.exe 12 18->21         started        23 conhost.exe 18->23         started        process11 process12 25 AFILE.exe 4 21->25         started        file13 33 C:\Users\user\AppData\...\InstallUtil.exe, PE32 25->33 dropped 59 Machine Learning detection for dropped file 25->59 61 Writes to foreign memory regions 25->61 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->63 65 Injects a PE file into a foreign processes 25->65 29 InstallUtil.exe 2 25->29         started        signatures14 process15 dnsIp16 41 smtp.karibbeanflavours.com.netsolmail.net 205.178.146.249, 49757, 587 DEFENSE-NETUS United States 29->41 43 smtp.karibbeanflavours.com 29->43 73 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 29->73 75 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 29->75 77 Tries to steal Mail credentials (via file / registry access) 29->77 79 3 other signatures 29->79 signatures17
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-28 07:02:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jqnz6lfqpcyoeyic6627te4sjoq5mwq4mgqtja2do2hd3zv5uxuq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:asyncrat botnet:venom clients collection keylogger rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220428-htr87sfddn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
Async RAT payload
AgentTesla
AsyncRat
suricata: ET MALWARE AgentTesla Exfil Via SMTP
Malware Config
C2 Extraction:
45.137.22.41:4449
Unpacked files
SH256 hash:
c611a6ceb263401ed18ff93961bd6d0cdf8757e48d8e76b13943e85b9d3b5a0b
MD5 hash:
f9b293305bd04eee511c0ffd0e7f29d7
SHA1 hash:
fd981a9537a903422311f582defc1c8fd97248af
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
SH256 hash:
7d170109f352f251d7ac012882e005b059b0db5ecce7520acf7be2ba8f13792a
MD5 hash:
72403055ee098f50bcc8a238fdbef878
SHA1 hash:
eb5ed9b38f5a23bb00b221acf3f7233aa2e9299d
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
SH256 hash:
935180f9c773e9d215beb526010e58731d6e29dfc7dba71aa04d65cf3093d7be
MD5 hash:
46d8cd203066731fe2b5c3b51db51781
SHA1 hash:
ca7b1ded5e5141f47c7704607df3ad8058fc70fc
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
SH256 hash:
f7cfefeeb635a25ea33b8921d2da4b46d0f301fded20f297921769ad664760e5
MD5 hash:
fc05ef30d9d06337930de3d0cd958426
SHA1 hash:
b1b9ae6702b163a47fcb6151eb9cd45c337afa38
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
SH256 hash:
21da0a74bf4268a9ce468230c1dfa9b1ac8ae5d59bc9fa3c9a5c41d5c7684fd2
MD5 hash:
796fb628f699a0d18448eb2e4ef11b69
SHA1 hash:
7aa8b830afc32a9a7ea5c0f79c894cf42c49df64
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
SH256 hash:
4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9
MD5 hash:
8891cce38c5626bbe9a912f6382d8d8e
SHA1 hash:
1c8dc69446dcdc21106a534d7caf58ce02b5a540
Link:
https://www.unpac.me/results/243e91de-7c1c-45d8-b853-0c67ccad242e/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4c1b9f2cb078/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9

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_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: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 4c1b9f2cb078b0e26102f7b5f993924ba1d65a1c61a1348343768e3de6bda5e9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2168780/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/267461/

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