MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138
SHA3-384 hash: 61cc93f824a0a37d5634dab0536b7ba1e40914fbed4ea78d1c2896e1db0e2175cbad7177a5a7b3ba8212e77696dc565d
SHA1 hash: fd5e88fdf708dc322dedb010675829c1e06b9c5a
MD5 hash: 00f2ba0f02c877edf4e29e64ead94de1
humanhash: yellow-vermont-black-emma
File name:GIV PO 00254.xls.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:446'464 bytes
First seen:2021-10-11 09:49:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'477 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:gjQ6MFohvg6e6UqrlPxtu47Ys3LwkVKY+QhXqyyXtGGK0W+OJz921AsOjz:ShvdUGuWL1XRq9tPKm0
Threatray 1'476 similar samples on MalwareBazaar
TLSH T119948E2039FA116AF272AF762ED1B29DAF6EBFB21503901D1151734B0632A81DDF153B
Reporter GovCERT_CH
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
159
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
GIV PO 00254.xls.exe
Verdict:
Malicious activity
Analysis date:
2021-10-11 10:08:14 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/2f172bae-81f2-4405-ae42-0cab27592da9

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/196556/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25-2.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:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616408cd1c2d58ba7401911a/reports/d1fe8860-55fb-419d-918a-cea11de82fe0/overview
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/868037
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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 an obfuscated file name to hide its real file extension (double extension)
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: 500464 Sample: GIV PO 00254.xls.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 100 62 Multi AV Scanner detection for dropped file 2->62 64 Multi AV Scanner detection for submitted file 2->64 66 Yara detected AntiVM3 2->66 68 10 other signatures 2->68 8 GIV PO 00254.xls.exe 7 2->8         started        12 windows update.exe 2->12         started        process3 file4 50 C:\Users\user\AppData\...\QZtVmtCfbOljxm.exe, PE32 8->50 dropped 52 C:\Users\user\AppData\Local\...\tmp24D1.tmp, XML 8->52 dropped 54 C:\Users\user\...behaviorgraphIV PO 00254.xls.exe.log, ASCII 8->54 dropped 70 Adds a directory exclusion to Windows Defender 8->70 72 Injects a PE file into a foreign processes 8->72 14 GIV PO 00254.xls.exe 6 8->14         started        17 powershell.exe 25 8->17         started        19 schtasks.exe 1 8->19         started        21 powershell.exe 12->21         started        23 schtasks.exe 12->23         started        25 windows update.exe 12->25         started        signatures5 process6 dnsIp7 56 C:\Users\user\AppData\...\windows update.exe, PE32 14->56 dropped 28 cmd.exe 1 14->28         started        30 cmd.exe 1 14->30         started        32 conhost.exe 17->32         started        34 conhost.exe 19->34         started        36 conhost.exe 21->36         started        38 conhost.exe 23->38         started        58 185.19.85.136, 49779, 49780, 49783 DATAWIRE-ASCH Switzerland 25->58 60 192.168.2.4, 443, 49685, 49686 unknown unknown 25->60 file8 process9 process10 40 conhost.exe 28->40         started        42 timeout.exe 1 28->42         started        44 windows update.exe 28->44         started        46 conhost.exe 30->46         started        48 schtasks.exe 1 30->48         started       
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-11 09:50:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ksf26x6ebzpenrlxjhperd5gvaxum2eayia2f5tclyqkz2hpwe4a._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
+ 1'466 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat evasion rat spyware stealer
Link:
https://tria.ge/reports/211011-ltx18sgga8/
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
Reads user/profile data of web browsers
Executes dropped EXE
Looks for VMWare Tools registry key
Async RAT payload
Looks for VirtualBox Guest Additions in registry
AsyncRat
Unpacked files
SH256 hash:
c238a4b9ef3af9b85ab97c563ef6dc25e21ea3a710c8c54040272a3064987da1
MD5 hash:
8a9026200a3a07bd8dc3f1590cadcbbc
SHA1 hash:
72919ff308421c3e3f26a39fecd442fdde739b4f
Link:
https://www.unpac.me/results/eaf82e07-0c5d-4597-b798-38cc4413aab6/
SH256 hash:
5aca65d0bd8e958a8bdac2a0886fa83846f7166d67974426536f2ce2dde3060b
MD5 hash:
55b852d53fdaa26c886ebab628216e11
SHA1 hash:
457e212ff382b3d16dc2d180302b1f43c5a64b65
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/eaf82e07-0c5d-4597-b798-38cc4413aab6/
Parent samples :
548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138
1b72ff8d76f6f5a17b4fc6f223708dcfb18a8635e6331281441bb86aac25b3c0
58cac4ef6c2a2c25e3a50ea093f3bc90933f046f76c14235b70cf6caf1bfd9ca
af6a983fddf6bcb3a4fdf93ad8ff0fb48e893bd11e4e4c5d2412e68c98f03b54
SH256 hash:
d434e7cb4105d7e760a39a1a8a1306338b00fbd6507025d53e4c44ede73d3788
MD5 hash:
6613b992e916924c3f38a179bb9866ab
SHA1 hash:
cd5741f4d0a4685c5fd9c9e2e708bbf33ec1691a
Link:
https://www.unpac.me/results/eaf82e07-0c5d-4597-b798-38cc4413aab6/
SH256 hash:
548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138
MD5 hash:
00f2ba0f02c877edf4e29e64ead94de1
SHA1 hash:
fd5e88fdf708dc322dedb010675829c1e06b9c5a
Link:
https://www.unpac.me/results/eaf82e07-0c5d-4597-b798-38cc4413aab6/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/548baf5fc40e/report/overview.html
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/548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138

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 548baf5fc40e5e46c57749de488fa6a82f466880c201a2f6625e20ace8efb138

(this sample)

  
Dropped by
AsyncRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/196556/

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