MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7. 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 1 YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7
SHA3-384 hash: b98d8c0843d4ad0bbb103a0c89e0d9a7834fb21642bfffed49936c46e6b8b583ab828ceabaeec5a78bd94c5ec9ca7b6d
SHA1 hash: 6ec93a5182b68e6bfbb763abb4d6da251b8d173a
MD5 hash: 1648112df2e3f6bad3c217b906965ce7
humanhash: early-lemon-nebraska-thirteen
File name:1648112df2e3f6bad3c217b906965ce7.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:937'984 bytes
First seen:2022-06-11 19:53:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:ZhJbg9i2mfw3QY1q+62CMdjJL6H22qla5w/yXbxPQtXzffN78hIGPwl:ZjbgU2D3i+62nzL6H0MW/Ibx4tX7ew
Threatray 2'664 similar samples on MalwareBazaar
TLSH T18C159F8D6F8B88A9DC14E3B0CEB32BA01644DBFB0C6A4717E358351DD57B7A66D0071A
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon fa6ae472f89ca49a (1 x QuasarRAT)
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
96.8.112.20:3355

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
96.8.112.20:3355 https://threatfox.abuse.ch/ioc/694154/

Intelligence

File Origin
# of uploads :
1
# of downloads :
489
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
1648112df2e3f6bad3c217b906965ce7.exe
Verdict:
Malicious activity
Analysis date:
2022-06-11 19:54:03 UTC
Tags:
trojan rat quasar asyncrat
Link:
https://app.any.run/tasks/8bda4ae2-9c7f-4a32-ae0c-1f5cfb287720

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/279023/
Detection(s):
Win.Trojan.EmbeddedDotNetBinary-9940868-0
Create hunting rule

Win.Trojan.EmbeddedReversedDLL-9940922-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Forced system process termination
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a file
Creating a window
Sending a custom TCP request
DNS request
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62a4f2ef3c52ddca42d7ea75/reports/167852df-ff2e-4aab-899f-989849113dbd/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a7c8ddaf-5471-4780-b651-c254ea5fa8d6
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1011496
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
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)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 643992 Sample: hrzNoZdKN1.exe Startdate: 11/06/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 12 other signatures 2->53 8 hrzNoZdKN1.exe 5 2->8         started        process3 file4 35 C:\Users\user\AppData\Roaming\...\word.exe, PE32 8->35 dropped 37 C:\Users\user\...\word.exe:Zone.Identifier, ASCII 8->37 dropped 39 C:\Users\user\AppData\...\hrzNoZdKN1.exe.log, ASCII 8->39 dropped 57 Creates an undocumented autostart registry key 8->57 12 MSBuild.exe 15 5 8->12         started        16 cmd.exe 1 8->16         started        18 powershell.exe 18 8->18         started        signatures5 process6 dnsIp7 41 96.8.112.20, 3355, 49756 AS-COLOCROSSINGUS United States 12->41 43 tools.keycdn.com 185.172.148.96, 443, 49758 PROINITYPROINITYDE Germany 12->43 45 2 other IPs or domains 12->45 59 May check the online IP address of the machine 12->59 61 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->61 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->63 20 cmd.exe 1 12->20         started        65 Uses ping.exe to sleep 16->65 67 Uses ping.exe to check the status of other devices and networks 16->67 23 conhost.exe 16->23         started        25 timeout.exe 1 16->25         started        27 conhost.exe 18->27         started        signatures8 process9 signatures10 55 Uses ping.exe to sleep 20->55 29 conhost.exe 20->29         started        31 PING.EXE 1 20->31         started        33 chcp.com 1 20->33         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 13:44:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=l7xvpaofygdne7472afsfwmuepjzysd2qsk3ktwtyzg6hwkkkgtq._file
Verdict:
malicious
Label(s):
masslogger
Create hunting rule
Similar samples:
39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8
QuasarRAT
5ec6cce510d69c335c5be169b3919181d7c785d48759a89a2051cbadb522c337
QuasarRAT
66aa3076bab656dc495c3a7cd2f8cfef86ffe2082d209fabe8c64905b8c76cb9
QuasarRAT
6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72
QuasarRAT
70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f
QuasarRAT
9cdd36e441f512cbc2bcd44c3f8344979205bc8f81d01f011d9c328ce216227d
QuasarRAT
ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3
QuasarRAT
+ 2'654 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware suricata trojan
Link:
https://tria.ge/reports/220611-ymhzysebgr/
Behaviour
Delays execution with timeout.exe
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Quasar Payload
Quasar RAT
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)
Malware Config
C2 Extraction:
96.8.112.20:3355
Unpacked files
SH256 hash:
9f01d9f2ed07e630ec078efa5d760762c3c8ad3b06e9e8a9062a37d63d57b026
MD5 hash:
9fbb8cec55b2115c00c0ba386c37ce62
SHA1 hash:
e2378a1c22c35e40fd1c3e19066de4e33b50f24a
Link:
https://www.unpac.me/results/be721720-1826-4904-a9d8-a5f19d8a4755/
SH256 hash:
36f7464ba9e7833916471c11a9948000b4ad230e58fc4637f404248c3af7d1d9
MD5 hash:
f256399a80552f791c22fe782228aad2
SHA1 hash:
823983e508f1b73c8bccf16cf1d19610e7397897
Link:
https://www.unpac.me/results/be721720-1826-4904-a9d8-a5f19d8a4755/
SH256 hash:
d53b751b8130b264b14fbbca2c93230d834a9a5f7e58a99192af81602441d7eb
MD5 hash:
39550a24e637bca1421a1532728a8ce7
SHA1 hash:
3d23037f87076f7932985d4fb27c35265a9344af
Link:
https://www.unpac.me/results/be721720-1826-4904-a9d8-a5f19d8a4755/
SH256 hash:
5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7
MD5 hash:
1648112df2e3f6bad3c217b906965ce7
SHA1 hash:
6ec93a5182b68e6bfbb763abb4d6da251b8d173a
Link:
https://www.unpac.me/results/be721720-1826-4904-a9d8-a5f19d8a4755/
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/5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

Web download

QuasarRAT

Executable exe 5fef5781c5c186d27f9fd00b22d99423d39c487a8495b54ed3c64de3d94a51a7

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/279023/
  
URLhaus
https://urlhaus.abuse.ch/url/2234839/
  
Delivery method
Distributed via web download

Comments