MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 956bd054893f8940d72ec94175b2f063ac759a1f9cee3a0cad7eb3b7871bae2f. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 956bd054893f8940d72ec94175b2f063ac759a1f9cee3a0cad7eb3b7871bae2f
SHA3-384 hash: 5df5246574b06a6f470b95ff0ed4e8f1fd9145b5c67e003de32fea862d3229d5b99a67bd3e7347ad1a5eb24fbf8c39ec
SHA1 hash: f39c084bf94467b137f42a6d160576106450cafd
MD5 hash: 55a53ca9a4fcdbdd20505b973587aec3
humanhash: angel-charlie-blue-skylark
File name:uupate.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:223'232 bytes
First seen:2021-06-23 13:47:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:r30jubp9WRwOpw2Mo1E7bpTugBSVQLB4XALFV:7F9W+OpaoVQL+XA
Threatray 1'381 similar samples on MalwareBazaar
TLSH 06248C3A73A15F41D22A5975C0E7913013F7E9C72A76E34E3F8412C60E827E99D9DB88
Reporter James_inthe_box
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
microsoft-II.jpeg.exe
Verdict:
Malicious activity
Analysis date:
2021-06-23 13:42:58 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/19265f00-1044-4321-91c5-5d9fec4f6c07

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/857e901a-b4d4-446f-8b2d-0830f71c80f9
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/806614
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
PowerShell case anomaly found
Powershell drops PE file
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 439025 Sample: uupate.exe Startdate: 23/06/2021 Architecture: WINDOWS Score: 100 71 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->71 73 Found malware configuration 2->73 75 Antivirus detection for dropped file 2->75 77 9 other signatures 2->77 10 uupate.exe 3 2->10         started        14 Runtime Brokerr.exe 2 2->14         started        16 uupate.exe 2->16         started        process3 file4 67 C:\Users\user\AppData\...\uupate.exe.log, ASCII 10->67 dropped 91 PowerShell case anomaly found 10->91 93 Injects a PE file into a foreign processes 10->93 18 uupate.exe 6 10->18         started        21 powershell.exe 16 10->21         started        24 powershell.exe 10 14->24         started        26 Runtime Brokerr.exe 14->26         started        28 Runtime Brokerr.exe 14->28         started        30 uupate.exe 16->30         started        signatures5 process6 file7 61 C:\Users\user\AppData\...\Runtime Brokerr.exe, PE32 18->61 dropped 32 cmd.exe 1 18->32         started        34 cmd.exe 1 18->34         started        63 C:\Users\user\...\uupate.exe:Zone.Identifier, ASCII 21->63 dropped 81 Drops PE files to the startup folder 21->81 83 Powershell drops PE file 21->83 37 conhost.exe 21->37         started        39 conhost.exe 24->39         started        signatures8 process9 signatures10 41 Runtime Brokerr.exe 3 32->41         started        44 conhost.exe 32->44         started        46 timeout.exe 1 32->46         started        79 Uses schtasks.exe or at.exe to add and modify task schedules 34->79 48 conhost.exe 34->48         started        50 schtasks.exe 1 34->50         started        process11 signatures12 87 PowerShell case anomaly found 41->87 89 Injects a PE file into a foreign processes 41->89 52 Runtime Brokerr.exe 41->52         started        56 powershell.exe 10 41->56         started        process13 dnsIp14 69 136.144.41.4, 4771, 49727, 49733 WORLDSTREAMNL Netherlands 52->69 85 Tries to harvest and steal browser information (history, passwords, etc) 52->85 65 C:\Users\user\AppData\Roaming\...\uupate.exe, PE32 56->65 dropped 59 conhost.exe 56->59         started        file15 signatures16 process17
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/956bd054893f8940d72ec94175b2f063ac759a1f9cee3a0cad7eb3b7871bae2f/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-06-23 13:46:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 46 (47.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=svv5avejh6eubvzozfaxlmxqmowhlgq7ttxdudfnp2z3pby3vyxq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
masslogger
Create hunting rule
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AsyncRAT
1299373ec40fc1f3f16957338574a9ad51a94e62220cc8c08f1ad81dee443544
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438e8f8d626ca18bb5fbd3499cad058033b199c865badba6415e362d5b8dcd49
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a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b
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c75f28cdb21bec49700a7579d3b630074e3fb6de4cda70c5937dcd8424bbebbf
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ceddcfa72226e91f7435facafe6631d1385ca4d246d242d5136ac4e9462b8611
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fad55e42bde0dce163f94a0ac272418b17100a67e439574fdc49ab7e2b12bc3e
AsyncRAT
+ 1'371 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat rat
Link:
https://tria.ge/reports/210623-84nfac86we/
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
Drops startup file
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
127.0.0.1:4771
136.144.41.4:4771
Unpacked files
SH256 hash:
f2e6d734a1969d6a295aff9e23dd0b1822f68065becae40c00dbf771a34ddde4
MD5 hash:
b97f009750267513296145265ca8404f
SHA1 hash:
b8cbdc89a5db2d45b9e94031a754365e664b3c2f
Link:
https://www.unpac.me/results/ac97ede2-9fef-498a-9fd2-b79faa3f9907/
SH256 hash:
3fe966e21625f83eccdcc49762305a16e6c488397b4e08a98e1be48d93c3a571
MD5 hash:
884c22791622cbd6edc8ad0dfcea87f2
SHA1 hash:
8b2b539c86f49597a05a289fda4ac27b2fd1c177
Link:
https://www.unpac.me/results/ac97ede2-9fef-498a-9fd2-b79faa3f9907/
Parent samples :
fb50faa852bc2917ace3552b02c754c91872d0892e247f51a1e48336e598d6ef
6f97024532dc240921683a3769cb317aefc60bf89c8916b01e80a804675f7487
8e36d4f98a882487bedbedf73cbb010f793c7bb529d133a58673a14850198f9f
SH256 hash:
d57d6a75490abf0777810b758a80fd548e345425599b741a90213384253d802a
MD5 hash:
c61ae5d81f90a1fd391d15aeff7306c3
SHA1 hash:
729168b24e95e099bad00598ad1704fb322dd847
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/ac97ede2-9fef-498a-9fd2-b79faa3f9907/
SH256 hash:
956bd054893f8940d72ec94175b2f063ac759a1f9cee3a0cad7eb3b7871bae2f
MD5 hash:
55a53ca9a4fcdbdd20505b973587aec3
SHA1 hash:
f39c084bf94467b137f42a6d160576106450cafd
Link:
https://www.unpac.me/results/ac97ede2-9fef-498a-9fd2-b79faa3f9907/
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/956bd054893f8940d72ec94175b2f063ac759a1f9cee3a0cad7eb3b7871bae2f

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:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

  
Delivery method
Other

Comments