MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5ac1aaab0a81080aa92df2e4244391805d0eb5134e69e8353fb6eb942eae095e. 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: 14


Intelligence 14 IOCs YARA 9 File information Comments

SHA256 hash: 5ac1aaab0a81080aa92df2e4244391805d0eb5134e69e8353fb6eb942eae095e
SHA3-384 hash: d6824f5c4976fc65fd966784f765a6e1d20102438dd4ed476bb278f77c879ce2195d935d54fab1212450c83a7f054172
SHA1 hash: cdfe8a75f893f03eb576489692de2ad78581e220
MD5 hash: a7fafa42b89fdd5f8cf845b0c12ce4f7
humanhash: beer-two-avocado-carolina
File name:Specifications.xls.scr
Download: download sample
Signature AsyncRAT
File size:403'456 bytes
First seen:2021-10-14 12:37:19 UTC
Last seen:2021-10-14 14:03:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:QhSt3LGdshjIW5BoqwTbOtczFjNXlTEGtxhB:QKCmhjIW5VJc5NNVtR
Threatray 1'662 similar samples on MalwareBazaar
TLSH T1878419516ED8EBECF479C33CA0A4641143FAE406E31DCA3A7F9D15CA04B6F86C291A57
File icon (PE):PE icon
dhash icon 10f0c4c8c8c4f010 (26 x AgentTesla, 18 x Smoke Loader, 10 x Formbook)
Reporter info_sec_ca
Tags:AsyncRAT exe scr

Intelligence


File Origin
# of uploads :
2
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Specifications.xls.scr
Verdict:
Malicious activity
Analysis date:
2021-10-14 21:02:57 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file in the %temp% directory
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
asyncrat obfuscated packed spygate
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.
Result
Threat name:
AsyncRAT
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Drops PE files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
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)
Yara detected AsyncRAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 502891 Sample: Specifications.xls.scr Startdate: 14/10/2021 Architecture: WINDOWS Score: 100 34 Found malware configuration 2->34 36 Multi AV Scanner detection for dropped file 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 7 other signatures 2->40 7 Specifications.xls.exe 1 2->7         started        11 System.exe 1 2->11         started        process3 file4 26 C:\Users\user\...\Specifications.xls.exe.log, ASCII 7->26 dropped 42 Injects a PE file into a foreign processes 7->42 13 powershell.exe 15 7->13         started        17 Specifications.xls.exe 2 7->17         started        20 Specifications.xls.exe 7->20         started        22 System.exe 2 11->22         started        signatures5 process6 dnsIp7 28 C:\Users\user\AppData\Roaming\...\System.exe, PE32 13->28 dropped 30 C:\Users\user\...\System.exe:Zone.Identifier, ASCII 13->30 dropped 44 Drops PE files to the startup folder 13->44 46 Powershell drops PE file 13->46 24 conhost.exe 13->24         started        32 194.5.97.212, 1199, 49750, 49753 DANILENKODE Netherlands 17->32 file8 signatures9 process10
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Status:
Malicious
First seen:
2021-10-14 00:53:11 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops startup file
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
194.5.97.212:1199
Unpacked files
SH256 hash:
fd56a07f2da75c84337cbf94e0acafc09fb909cfb187a0ae214827ce2c4708bb
MD5 hash:
d93c5f59ddc41313bf36f106a2f1fe17
SHA1 hash:
97c5cd9d0689c1cd74685bc979122a13eba3fcc9
SH256 hash:
37df1b2837ab4eb0e06200790983dd446daff0d9cb9383f8a60f4bc55d9e9b84
MD5 hash:
f6ef0d8e68371081a16b788d3e0b046b
SHA1 hash:
6e0f74faff173e65d87215cfd1ae73179abd9305
Detections:
win_asyncrat_w0
SH256 hash:
5ac1aaab0a81080aa92df2e4244391805d0eb5134e69e8353fb6eb942eae095e
MD5 hash:
a7fafa42b89fdd5f8cf845b0c12ce4f7
SHA1 hash:
cdfe8a75f893f03eb576489692de2ad78581e220
Malware family:
AsyncRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_AsyncRAT
Author:ditekSHen
Description:Detects AsyncRAT
Rule name:pe_imphash
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_asyncrat_j1
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
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.

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