MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca. 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 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca
SHA3-384 hash: 9eab628f0256599de83de448b5bd35d40e0b2128d31f92407429ab36b9cf98c8cf17a4f3e482e87bf58a8b084ca453da
SHA1 hash: 97b6af107a46ee963493f184a0d329de09f1b5bd
MD5 hash: b3a6eef3e33b7e15038d82ddd2fa5cbd
humanhash: winner-one-april-ten
File name:MT103 10.11.pdf.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:417'280 bytes
First seen:2021-10-12 10:34:26 UTC
Last seen:2021-10-12 12:11:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:2mGwUwUwU6bSSRjQRl0MkhBlVO1ofwtGGV4Je5zQI9fqo9N2nFjsW7csu23ggl28:fGwUwUwU69MtSBlctGjJezfcjsiP59R
Threatray 1'501 similar samples on MalwareBazaar
TLSH T19794020567AFEE15C4AA17FE609952F38778B52181CBDF1B7AC035FF6C223066E85602
Reporter GovCERT_CH
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
173
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MT103 10.11.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-10-12 11:17:28 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a5df520e-7551-45cb-b751-6c71620b96e9

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/196905/
Detection(s):
SecuriteInfo.com.IL.Trojan.MSILZilla.2919.31260.26840.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616564d79fb4d8593d625d91/reports/4916f4a2-36cf-4374-a4fa-cd24b5660d39/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/041f1b0d-9142-47cb-9cb5-a4b81a4a9104
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/868538
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Initial sample is a PE file and has a suspicious name
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Double Extension
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: 500966 Sample: MT103 10.11.pdf.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 92 62 Yara detected AntiVM3 2->62 64 Yara detected AsyncRAT 2->64 66 Sigma detected: Suspicious Double Extension 2->66 68 7 other signatures 2->68 8 MT103 10.11.pdf.exe 7 2->8         started        12 windows update.exe 4 2->12         started        process3 file4 52 C:\Users\user\AppData\Local\...\tmp7A85.tmp, XML 8->52 dropped 54 C:\Users\user\AppData\...\HoImQSNPxm.exe, PE32 8->54 dropped 70 Adds a directory exclusion to Windows Defender 8->70 14 MT103 10.11.pdf.exe 6 8->14         started        17 powershell.exe 25 8->17         started        19 schtasks.exe 1 8->19         started        21 MT103 10.11.pdf.exe 8->21         started        23 powershell.exe 12->23         started        25 schtasks.exe 12->25         started        27 windows update.exe 12->27         started        signatures5 process6 dnsIp7 56 C:\Users\user\AppData\...\windows update.exe, PE32 14->56 dropped 30 cmd.exe 1 14->30         started        32 cmd.exe 1 14->32         started        34 conhost.exe 17->34         started        36 conhost.exe 19->36         started        38 conhost.exe 23->38         started        40 conhost.exe 25->40         started        58 185.19.85.136, 49769, 49775, 49778 DATAWIRE-ASCH Switzerland 27->58 60 192.168.2.5, 443, 49677, 49678 unknown unknown 27->60 file8 process9 process10 42 conhost.exe 30->42         started        44 timeout.exe 1 30->44         started        46 windows update.exe 30->46         started        48 conhost.exe 32->48         started        50 schtasks.exe 1 32->50         started       
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-10-12 10:35:05 UTC
AV detection:
9 of 44 (20.45%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ldfmj33mfiwcly5fb2qjh454scjt6bdpo3auennxbt3mv4n73hfa._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0b8a5cbe236a7057a2904f18480b85ce9b59b891c0a1a041516248d35760744d
AsyncRAT
16fc0cec13d88da3d0a36e4c42e733db8f1e21cafc18fd813a25cd0bc835f35a
AsyncRAT
220bb2b7deba41f53a8d86d677691aff283314a29c27cc49b2ba396699237825
AsyncRAT
438e8f8d626ca18bb5fbd3499cad058033b199c865badba6415e362d5b8dcd49
AsyncRAT
b51c07d9a4e50ac499514d378320260821bd7486acd1077a6bddf8ab70c6a2b3
AsyncRAT
bcf7571a4d9b25fabdc2d6120b1b2d7bd8446ea2bc3a5da1d4127954920067de
AsyncRAT
ceddcfa72226e91f7435facafe6631d1385ca4d246d242d5136ac4e9462b8611
AsyncRAT
ecb8839117d73d33390c84f7f6e02f4970156ccb2da7b48083922f60625fa8be
AsyncRAT
fee6cda76d8c5b289b76deba1176049e529f51ac06f817a8a22ec77b17d74f35
AsyncRAT
+ 1'491 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat evasion rat
Link:
https://tria.ge/reports/211012-mmn1escbc7/
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
Maps connected drives based on registry
Checks BIOS information in registry
Loads dropped DLL
Executes dropped EXE
Looks for VMWare Tools registry key
Async RAT payload
Looks for VirtualBox Guest Additions in registry
AsyncRat
Unpacked files
SH256 hash:
5aca65d0bd8e958a8bdac2a0886fa83846f7166d67974426536f2ce2dde3060b
MD5 hash:
55b852d53fdaa26c886ebab628216e11
SHA1 hash:
457e212ff382b3d16dc2d180302b1f43c5a64b65
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/cfab832a-cadf-4f47-903c-0dec7a5ccd39/
Parent samples :
548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138
1b72ff8d76f6f5a17b4fc6f223708dcfb18a8635e6331281441bb86aac25b3c0
58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca
af6a983fddf6bcb3a4fdf93ad8ff0fb48e893bd11e4e4c5d2412e68c98f03b54
SH256 hash:
e8644dc5ff48e8cdf7640491484faa58b09ab7a8e489d5c21c6b1edef0430966
MD5 hash:
47ca10da92d11618ab274949d6a9b011
SHA1 hash:
01612957bc27fca284ffe79d7006a29213d0694c
Link:
https://www.unpac.me/results/cfab832a-cadf-4f47-903c-0dec7a5ccd39/
SH256 hash:
eda4d687b865aed0078ab87078de7d9722888b2d2af71c6fc0dcdc986ffb7567
MD5 hash:
12cf5402be16590c300b442a66e9ebc1
SHA1 hash:
0ea28394d301ca1ce840f039d2da62a5ce6d9334
Link:
https://www.unpac.me/results/cfab832a-cadf-4f47-903c-0dec7a5ccd39/
SH256 hash:
58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca
MD5 hash:
b3a6eef3e33b7e15038d82ddd2fa5cbd
SHA1 hash:
97b6af107a46ee963493f184a0d329de09f1b5bd
Link:
https://www.unpac.me/results/cfab832a-cadf-4f47-903c-0dec7a5ccd39/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/58cac4ef6c2a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca

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:pe_imphash
Create hunting rule
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

Executable exe 58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca

(this sample)

  
Dropped by
AsyncRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/196905/

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