MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bf94ae3815c7d2790667030ff2322157d3b8589b55286f74c875c46f4339fa55. 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: 12


Intelligence 12 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bf94ae3815c7d2790667030ff2322157d3b8589b55286f74c875c46f4339fa55
SHA3-384 hash: 501a8a2eb0921cce30f2bef28728518a6c13705344055371b5a9ead880015f0f8ef3ce42ae5a6c503f158ddeb74a75c3
SHA1 hash: a9d2bd0a4c1239e90c306ec7f119a6d3087ce22f
MD5 hash: d79ec034a7b1c4a28e184caa0a913867
humanhash: shade-tennessee-solar-seventeen
File name:Quote#004.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'105'920 bytes
First seen:2022-04-21 12:36:00 UTC
Last seen:2022-04-21 13:51:37 UTC
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:YS/6zDScQfwpk68N2Q09Mc4OukmfRcA+HeYafCxJR6MjYnDlRPkzFaK1gATlpSi8:5yzpwNx0lbR09hoJvYDLPyO+pd8
Threatray 1'689 similar samples on MalwareBazaar
TLSH T19D35E0823185DCDAE04719F258AFD56012787D8F9125C60D3B83BF2BA5E7342346BB9E
TrID 54.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
23.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.8% (.EXE) Win64 Executable (generic) (10523/12/4)
4.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.3% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon f29296968e9e9ea6 (60 x AgentTesla, 37 x RedLineStealer, 35 x Formbook)
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
3.83.129.253:4747

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
3.83.129.253:4747 https://threatfox.abuse.ch/ioc/521651/

Intelligence

File Origin
# of uploads :
2
# of downloads :
336
Origin country :
n/a
Vendor Threat Intelligence
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/265441/
Detection(s):
SecuriteInfo.com.Variant.Strictor.265298.12432.29215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Changing a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/62614fb4482f2f41cae04f37/reports/8269a5a3-9db1-4e79-95cb-bb097eeebb24/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.
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6380eb9d-370b-4936-9249-e73ecb10ae95
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/980649
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 613136 Sample: Quote#004.exe Startdate: 21/04/2022 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 8 other signatures 2->41 7 Quote#004.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\...\CBPpPlWDGGxk.exe, PE32 7->23 dropped 25 C:\Users\user\AppData\Local\...\tmp33F2.tmp, XML 7->25 dropped 27 C:\Users\user\AppData\...\Quote#004.exe.log, ASCII 7->27 dropped 43 Uses schtasks.exe or at.exe to add and modify task schedules 7->43 45 Writes to foreign memory regions 7->45 47 Adds a directory exclusion to Windows Defender 7->47 49 Injects a PE file into a foreign processes 7->49 11 RegSvcs.exe 15 8 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 dnsIp7 29 3.83.129.253, 4747, 49723 AMAZON-AESUS United States 11->29 31 tools.keycdn.com 185.172.148.96, 443, 49725 PROINITYPROINITYDE Germany 11->31 33 2 other IPs or domains 11->33 51 May check the online IP address of the machine 11->51 53 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 11->53 55 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->55 57 Installs a global keyboard hook 11->57 19 conhost.exe 15->19         started        21 conhost.exe 17->21         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bf94ae3815c7d2790667030ff2322157d3b8589b55286f74c875c46f4339fa55/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-21 12:36:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
11 of 42 (26.19%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x6kk4oavy7jhsbthamh7emrbk7j3qwe3kuug65gioxcg6qzz7jkq._file
Verdict:
malicious
Similar samples:
185ba54811bf367e51e498ccb60534544790abe9d757a5fd2fdd4ff94c2cd912
QuasarRAT
44ab3d116f6c6318067f89ccb838b5198b6544469ec27557ca1de3655a6ceb96
QuasarRAT
56d092c2d8c927f25843226203655bf07c46845fb927d7d2640120862989bfdf
QuasarRAT
75dc265d032be64eba35add54a98a93fc11568d4fa95f3c9a4e9700f094b4d52
QuasarRAT
82c6bcebf68686e31c276add1615229d2d8635cb15bae9c131293fc5b57617ea
QuasarRAT
ab5ea57fdd5bfa91a11db4d85f99a84e342ead177da5744dff012398d153f4ba
QuasarRAT
f251387bb1ec7acdd3634ab829ee4389a4b973cf699863f2769e7521d4e58a45
QuasarRAT
+ 1'679 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office spyware trojan
Link:
https://tria.ge/reports/220421-psw94aeca4/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
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
Malware Config
C2 Extraction:
3.83.129.253:4747
Unpacked files
SH256 hash:
042b75c33e1b67cbe0e90aadf606fe53c58418a5922d03528cd4811e6f0f9d52
MD5 hash:
e4b5b8a21e9c1c57e1068ec3d47ac66e
SHA1 hash:
96d3001a29add495aa123b0f5bdbd8fca1a92cb0
Link:
https://www.unpac.me/results/6aa3ff1d-002d-4c09-ad12-5bc447abd7fd/
SH256 hash:
ef058d0a23b36683b62d8331a6c43c2356bede56fdbe3587ba5b6889f344a67e
MD5 hash:
b41d180b984cffb701dc35d732f53494
SHA1 hash:
86a8c95cfabccfb57ca2e4520122d165776dee20
Link:
https://www.unpac.me/results/6aa3ff1d-002d-4c09-ad12-5bc447abd7fd/
SH256 hash:
d88f115cb50ffae1a3bff3ef904e107a39c62472b43843c9d388ce73276afc66
MD5 hash:
868cbaf93b00c50fb287d12f7c37049f
SHA1 hash:
3514ee7bc59196c2d121f8888f140777080173d5
Link:
https://www.unpac.me/results/6aa3ff1d-002d-4c09-ad12-5bc447abd7fd/
SH256 hash:
56f33206af96c6c2cf762ad3019b041c13225f2a0b14a6e8aed624907a7a9685
MD5 hash:
808808ba7ba5e3bf783f6f24c4c4806d
SHA1 hash:
1d282bf695e50f1c847daacd7d44b289f7c249a6
Link:
https://www.unpac.me/results/6aa3ff1d-002d-4c09-ad12-5bc447abd7fd/
SH256 hash:
bf94ae3815c7d2790667030ff2322157d3b8589b55286f74c875c46f4339fa55
MD5 hash:
d79ec034a7b1c4a28e184caa0a913867
SHA1 hash:
a9d2bd0a4c1239e90c306ec7f119a6d3087ce22f
Link:
https://www.unpac.me/results/6aa3ff1d-002d-4c09-ad12-5bc447abd7fd/
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/bf94ae3815c7d2790667030ff2322157d3b8589b55286f74c875c46f4339fa55

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

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/265441/

Comments