MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a
SHA3-384 hash: 8f5edd76dfbc690217df1c26e758f3b06f2e532a4cb189e67e841de671fc19f19307c1c5e81a86d1f9831a2fd42f3f32
SHA1 hash: 819958ed5e0745746f64404597ee253f1324a363
MD5 hash: 21acd7dae3c391311a718c9a580ad3eb
humanhash: leopard-burger-uranus-fix
File name:771.pdf.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:932'352 bytes
First seen:2022-03-09 10:24:50 UTC
Last seen:2022-03-14 08:54:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:CZt3Zy3WD5kPio7HX9EcMhiFaRvIW/hAAX7xe7vfSVoY2KdmJNlkiDrFKKhaDRp1:cD5kaMEfhemZhAc7xerfSaYeR4Kh2Z
Threatray 8'050 similar samples on MalwareBazaar
TLSH T161159DE229EF401DF337ABB16FC8F8CE996AE673151A30D711521B768523A80CD61736
Reporter GovCERT_CH
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
819958ED5E0745746F64404597EE253F1324A363
Verdict:
Malicious activity
Analysis date:
2022-03-09 12:42:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9f83e5e3-2a0d-4d29-99e3-913dc787379a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/248579/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.AELW.19335.17925.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Running batch commands
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62288081b94fb38cb4467c13/reports/c30bed6d-4c9b-41c2-ac32-7857ee712cdb/overview
Result
Verdict:
SUSPICIOUS
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/b804a999-9b77-4eb9-a903-be0ee7f07237
Result
Threat name:
AsyncRAT gzRat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/953197
Signature
Adds a directory exclusion to Windows Defender
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicius Schtasks From Env Var Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
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
Yara detected Costura Assembly Loader
Yara detected gzRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 585678 Sample: 771.pdf.exe Startdate: 09/03/2022 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Multi AV Scanner detection for dropped file 2->72 74 13 other signatures 2->74 10 771.pdf.exe 7 2->10         started        process3 file4 52 C:\Users\user\AppData\Roaming\hWVZAa.exe, PE32 10->52 dropped 54 C:\Users\user\...\hWVZAa.exe:Zone.Identifier, ASCII 10->54 dropped 56 C:\Users\user\AppData\Local\...\tmp2651.tmp, XML 10->56 dropped 58 C:\Users\user\AppData\...\771.pdf.exe.log, ASCII 10->58 dropped 78 Uses schtasks.exe or at.exe to add and modify task schedules 10->78 80 Adds a directory exclusion to Windows Defender 10->80 82 Injects a PE file into a foreign processes 10->82 14 771.pdf.exe 6 10->14         started        17 powershell.exe 24 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 file7 60 C:\Users\user\AppData\Roaming\images.exe, PE32 14->60 dropped 21 cmd.exe 1 14->21         started        23 cmd.exe 1 14->23         started        25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 process9 29 images.exe 21->29         started        32 conhost.exe 21->32         started        34 timeout.exe 21->34         started        36 conhost.exe 23->36         started        38 schtasks.exe 23->38         started        signatures10 84 Multi AV Scanner detection for dropped file 29->84 86 Machine Learning detection for dropped file 29->86 88 Adds a directory exclusion to Windows Defender 29->88 90 Injects a PE file into a foreign processes 29->90 40 images.exe 29->40         started        44 powershell.exe 29->44         started        46 schtasks.exe 29->46         started        process11 dnsIp12 62 185.19.85.136, 49794, 49825, 6060 DATAWIRE-ASCH Switzerland 40->62 64 192.168.2.3, 137, 138, 443 unknown unknown 40->64 66 192.168.2.1 unknown unknown 40->66 76 Tries to harvest and steal browser information (history, passwords, etc) 40->76 48 conhost.exe 44->48         started        50 conhost.exe 46->50         started        signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-09 10:25:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
18 of 27 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qx2cwxom7ftczj4r4z365n27xulznzviulp2t466ypuvd62sz2fa._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
AsyncRAT
0c323c02db0a52d9a1764a74e3cb5a7bcc8e7b9839160179a772de3a6bc8cf26
AsyncRAT
2db9c7811679d1b6d646220a908423199a4ae1d876ddb60189e8bc1c9bba74e9
AsyncRAT
5468fe6c4a8a65ed2e4e3c101c8fd0191b9773acc51ae61da6d446057958511b
AsyncRAT
5cc0900c9ec86120d00632b859c3ff0d03bff355db901ba7a1d87672fa096707
AsyncRAT
8e3079b83ab70db97e2508e7a9a57a8a5ce124b1524c6a64867b5ff33edcbdca
AsyncRAT
959e3ca2579b6be8a11c06763c5a34ec118abc96d869e25bef06319c92da465e
AsyncRAT
b086a8ed459f06adf11cdadcba62c689c178975063659e6b5c153844d1f25ac3
AsyncRAT
+ 8'040 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/220309-mfyw2sgdd3/
Unpacked files
SH256 hash:
cfe5122d2bc57cd88f5b5c99810246c0e809e03815cd543eb4c158f2a4c731e2
MD5 hash:
576bf5f71635095e610211b362fbadd3
SHA1 hash:
f46568bb4a1d0c20aa25e9aecce8db3c3c736760
Link:
https://www.unpac.me/results/31bc8af9-0fab-4d0e-89be-0bdf41922bab/
SH256 hash:
3a5186bba7f99a864d35f2d0a6d6bf67d221c81fc6fb51fc2932c7a8e37a29fe
MD5 hash:
6a3e414b7b50d73832bc4105d6b08241
SHA1 hash:
ccf4362b15c9ecf838f9aa0bbf7a9813fffbc976
Link:
https://www.unpac.me/results/31bc8af9-0fab-4d0e-89be-0bdf41922bab/
SH256 hash:
b5caab43f6ab270ddabe588f8613ee269b9af8fa62f1f245ea23f40a03c5f734
MD5 hash:
3286ccbf1c7002554bfb66a82b55da80
SHA1 hash:
809bb5f6e5d66bfa600db6c83910e8dcd6449c32
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/31bc8af9-0fab-4d0e-89be-0bdf41922bab/
Parent samples :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 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/31bc8af9-0fab-4d0e-89be-0bdf41922bab/
SH256 hash:
85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a
MD5 hash:
21acd7dae3c391311a718c9a580ad3eb
SHA1 hash:
819958ed5e0745746f64404597ee253f1324a363
Link:
https://www.unpac.me/results/31bc8af9-0fab-4d0e-89be-0bdf41922bab/
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/85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a

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:AsyncRat
Create hunting rule
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:MAL_AsnycRAT
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
Rule name:SUSP_Reverse_Run_Key
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

File information

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

Malspam

AsyncRAT

Executable exe 85f42b5dccf9662ca791e677eeb75fbd1796e6a8a2dfa9f3dec3e951fb52ce8a

(this sample)

  
Dropped by
AsyncRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/248579/

Comments