MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f
SHA3-384 hash: 5aac9898e781b9380cfe63fc3d9c76208ec686ce5914377727eee2c1e575acda5ccd2a04fb120d9dc060342ecfdd0056
SHA1 hash: 75ce40812a3ecb63899d8f6c8cbb310693b19fa4
MD5 hash: 0c4bb0c3f4b808f4706923019eaa46be
humanhash: oregon-high-yankee-oven
File name:d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:518'656 bytes
First seen:2021-08-31 10:22:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:uTEgdfYKbge6tdV2f0DVC/rG2VpvEadw4SRcdx:LUwbKGVC/q2Vpvcbcdx
Threatray 125 similar samples on MalwareBazaar
TLSH T188B45B8123FC862BE1AE577DE87054249BF4F407A6A7EB4F4940B2E93C567429D807B3
dhash icon 67a7198ab485dc16 (1 x QuasarRAT)
Reporter JAMESWT_WT
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f
Verdict:
Suspicious activity
Analysis date:
2021-08-31 11:03:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6e0c0b68-283e-4b50-b501-6cc8d41b468b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/184140/
Detection(s):
Win.Packed.Downeks-6898097-0
Create hunting rule

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

Win.Malware.Generic-9883082-0
Create hunting rule

Win.Malware.Generic-9883083-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Connection attempt
Setting a keyboard event handler
Sending a UDP request
Enabling autorun by creating a file
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/00e36b65-a668-46f4-b8f3-02581eb47581
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842490
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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: 474922 Sample: pteK4leBsV Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 26 Found malware configuration 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 4 other signatures 2->32 7 pteK4leBsV.exe 2 2->7         started        11 pteK4leBsV.exe 5 2->11         started        process3 dnsIp4 24 10.0.0.196, 4782 unknown unknown 7->24 34 Uses schtasks.exe or at.exe to add and modify task schedules 7->34 36 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->36 38 Installs a global keyboard hook 7->38 14 schtasks.exe 1 7->14         started        22 C:\Users\user\AppData\...\pteK4leBsV.exe.log, ASCII 11->22 dropped 16 schtasks.exe 1 11->16         started        file5 signatures6 process7 process8 18 conhost.exe 14->18         started        20 conhost.exe 16->20         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2021-07-01 05:36:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3gnvca4wgtcnd4ghw5fxd3o72vvapc3oror2n6u2evfzolpyobxq._file
Verdict:
malicious
Similar samples:
04d4ebdb690749b84d74422ccbb583acc3180cbe3eb280b9ece53ef5eb3b3abf
QuasarRAT
06b4062db19ac0017c3f0e32f27559a48aa9c7305f110c3b8485d5faa62d6814
QuasarRAT
1230b290a583361b44a14b0ebf16925f07d7d6ed0d58ecae0bdd2419903d27b0
QuasarRAT
2ba6b9466236aa43a839e4b4c9365dd730cb37ca2ddb009be0f2bcbced0e6d88
QuasarRAT
2c5d00f71931d80367ccae6bdd752ec56ab7647cc5312a0c7ddd24308ff9cc8e
QuasarRAT
3bdfd4cd7aacdefa4ab159a25b056056fd011b9ad60fc2166adbb41c5610b044
QuasarRAT
85e13a72f67635d8590b1952332a37371f5f06400cedd60cd8c85415a051c031
QuasarRAT
8be3c7231a1d547531c3e669d380fd00b5b3e773da201b34bed04810062329c0
QuasarRAT
a0a941db02eb3b60ac61954c236a11f4470697234f30f119236663b676efc157
QuasarRAT
a33be1069f51683e3ef5290bedad88f032df7b67fde8955bf2ad72b2f8d5e647
QuasarRAT
+ 115 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:discord
Link:
https://tria.ge/reports/210831-51wmwd989n/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Malware Config
C2 Extraction:
10.0.0.196:4782
Unpacked files
SH256 hash:
d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f
MD5 hash:
0c4bb0c3f4b808f4706923019eaa46be
SHA1 hash:
75ce40812a3ecb63899d8f6c8cbb310693b19fa4
Link:
https://www.unpac.me/results/65a38cc4-7a9d-4393-ad6a-53ec2acce926/
Malware family:
xRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/d99b51039634/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/d99b51039634c4d1f0c7b74b71eddfd56a078b6e8ba3a6fa9a254b972df8706f

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:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifcats observed in infostealers
Rule name:MALWARE_Win_QuasarStealer
Create hunting rule
Author:ditekshen
Description:Detects Quasar infostealer
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: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.

Cape
Cape
https://www.capesandbox.com/analysis/184140/

Comments