MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb. 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


QuasarRAT


Vendor detections: 9


Intelligence 9 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb
SHA3-384 hash: 3dcb82bb511f5514d176661780279bd5058e2242e8d1a601614f06d1e9f7cec012d95bd6eedbe1c7a2481b64bb145a3e
SHA1 hash: 74e134deb41cc8a8809c934439dcf28c0fa163dd
MD5 hash: 970c6a219dc27abe73aabc89db2cdd56
humanhash: spring-happy-romeo-angel
File name:970c6a219dc27abe73aabc89db2cdd56.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:514'048 bytes
First seen:2020-12-14 20:04:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:8TEgdfYuA6YHggOC4mywkppg2OBegcdq:hUwHHceywkpp6Begcdq
Threatray 29 similar samples on MalwareBazaar
TLSH 66B45B8123FC861BE1AE57BDE4B14421ABF4F407A6A7EB4F4940A1E93C567429E407F3
Reporter abuse_ch
Tags:exe QuasarRAT RAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
173
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
970c6a219dc27abe73aabc89db2cdd56.exe
Verdict:
Suspicious activity
Analysis date:
2020-12-14 20:07:57 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d8d3c1fe-0571-4289-9725-dbcb87eb3534

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/108045/
Detection(s):
Win.Packed.Downeks-6898097-0
Create hunting rule

Win.Packed.Passwordstealera-9792228-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for analyzed file
Creating a process from a recently created file
Creating a file
Sending a UDP request
Changing a file
Setting a keyboard event handler
Unauthorized injection to a recently created process
Connection attempt to an infection source
Enabling autorun by creating a file
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.
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/562628
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 330404 Sample: aVK4XmRb5C.exe Startdate: 14/12/2020 Architecture: WINDOWS Score: 100 29 Malicious sample detected (through community Yara rule) 2->29 31 Antivirus / Scanner detection for submitted sample 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 4 other signatures 2->35 8 aVK4XmRb5C.exe 5 2->8         started        12 aVK4XmRb5C.exe 2 2->12         started        process3 file4 25 C:\Users\user\AppData\...\msconfig.exe, PE32 8->25 dropped 27 C:\Users\user\AppData\...\aVK4XmRb5C.exe.log, ASCII 8->27 dropped 37 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->37 14 msconfig.exe 8 8->14         started        17 schtasks.exe 1 8->17         started        signatures5 process6 signatures7 39 Antivirus detection for dropped file 14->39 41 Multi AV Scanner detection for dropped file 14->41 43 Machine Learning detection for dropped file 14->43 45 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->45 19 schtasks.exe 1 14->19         started        21 conhost.exe 17->21         started        process8 process9 23 conhost.exe 19->23         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb/
Threat name:
ByteCode-MSIL.Trojan.Perseus
Create hunting rule
Status:
Malicious
First seen:
2020-12-11 11:02:16 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=idghmpzvk5pcxh642agzsk7itw7a5jpkmxyv3curkn37rkea3o5q._file
Verdict:
malicious
Similar samples:
04d4ebdb690749b84d74422ccbb583acc3180cbe3eb280b9ece53ef5eb3b3abf
QuasarRAT
06b4062db19ac0017c3f0e32f27559a48aa9c7305f110c3b8485d5faa62d6814
QuasarRAT
1735709e4b496d80858a5d3cbcf9e7aef536ff439fa04d28be863dd3135dee61
QuasarRAT
1aabe4a4ce09025edf03501ea5cce117d4315f4baa19c0110e1c779ae2bd9ad3
QuasarRAT
3a83d1211c8a9235a72f0dcea5c36ec53a99ed83340e35097e7f41773bc8fb3f
QuasarRAT
585e4146923404bbe11c2cf5a423e2650a5d133541e9baeacb64a4d675f6484d
QuasarRAT
85e13a72f67635d8590b1952332a37371f5f06400cedd60cd8c85415a051c031
QuasarRAT
ac4d3acc896cc3fd6e4ba14547572dfc0447f47f2c29c28a170db4b0169c6e2f
QuasarRAT
d3922882bfee49abb72584b9d5918f3787221fa40b7f552c98d7bc0e55833234
QuasarRAT
ee2e84f75b0b6043c2a2e3b84bdeabc0be4a4a1e4c6ec6a3ff255963b545425d
QuasarRAT
+ 19 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/201214-71ybvnb8an/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Executes dropped EXE
Unpacked files
SH256 hash:
40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb
MD5 hash:
970c6a219dc27abe73aabc89db2cdd56
SHA1 hash:
74e134deb41cc8a8809c934439dcf28c0fa163dd
Link:
https://www.unpac.me/results/4290db9b-c12a-4860-b4f1-6a6e749ae22e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Downeks
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb

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:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Vermin_Keylogger_Jan18_1
Create hunting rule
Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/

File information

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

Web download

QuasarRAT

Executable exe 40cc763f35575e2b9fdcd00d992be89dbe0ea5ea65f15d8a915377f8a880dbbb

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/108045/
  
URLhaus
https://urlhaus.abuse.ch/url/917413/
  
Delivery method
Distributed via web download

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