MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d5d6dcf7e05158c3d2abc10588ab6ca17cb2d4082720d8847b28894cafc0ead6. 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: 8


Intelligence 8 IOCs YARA 12 File information Comments 1

SHA256 hash: d5d6dcf7e05158c3d2abc10588ab6ca17cb2d4082720d8847b28894cafc0ead6
SHA3-384 hash: 07c0157a7ec41b267b7bbcc5eeeea86b48a788425fe6f2a27cc1909bbead31e9e25b906227b82668ad55e43e65f32538
SHA1 hash: d8a43a1a672c94fdc303496a44c574d060ba7939
MD5 hash: a5c571c3340be5d8fbe72063601309d5
humanhash: alanine-georgia-floor-sierra
File name:POI9090009.exe
Download: download sample
Signature QuasarRAT
File size:271'838 bytes
First seen:2021-05-12 05:47:23 UTC
Last seen:2021-05-12 06:59:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c05041e01f84e1ccca9c4451f3b6a383 (141 x RedLineStealer, 101 x GuLoader, 64 x DiamondFox)
ssdeep 6144:jgORakBec+J493VDi0dQl6JGW0gqAai8n7v1Zp:jgIeEVDXdQ9Ln7v1b
Threatray 5'348 similar samples on MalwareBazaar
TLSH 36441284F280C19AF4830531182A5F91A693FEB03DF9560A3B05F75BAD7B242F94F627
Reporter lowmal3
Tags:QuasarRAT

Intelligence


File Origin
# of uploads :
4
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
Creating a window
Creating a file in the %AppData% subdirectories
Setting a keyboard event handler
Launching a process
Launching the default Windows debugger (dwwin.exe)
Sending a UDP request
Creating a process with a hidden window
Unauthorized injection to a system process
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:
StormKitty
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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 video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses process hollowing technique
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected StormKitty Stealer
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 411950 Sample: POI9090009.exe Startdate: 12/05/2021 Architecture: WINDOWS Score: 100 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for dropped file 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 2 other signatures 2->65 8 POI9090009.exe 19 2->8         started        process3 file4 33 C:\Users\user\AppData\...\b5fo74sw66c.dll, PE32 8->33 dropped 71 Detected unpacking (changes PE section rights) 8->71 73 Detected unpacking (overwrites its own PE header) 8->73 75 Maps a DLL or memory area into another process 8->75 12 POI9090009.exe 1 3 8->12         started        signatures5 process6 signatures7 77 Writes to foreign memory regions 12->77 79 Allocates memory in foreign processes 12->79 81 Sample uses process hollowing technique 12->81 83 2 other signatures 12->83 15 InstallUtil.exe 15 7 12->15         started        19 InstallUtil.exe 6 12->19         started        22 InstallUtil.exe 6 12->22         started        process8 dnsIp9 35 245.246.1.0.in-addr.arpa 15->35 37 api.mylnikov.org 172.67.160.130, 443, 49732, 49758 CLOUDFLARENETUS United States 15->37 47 2 other IPs or domains 15->47 49 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 15->49 51 May check the online IP address of the machine 15->51 53 Tries to steal Instant Messenger accounts or passwords 15->53 24 MZ.exe 3 15->24         started        39 245.246.1.0.in-addr.arpa 19->39 41 104.22.19.188, 49766, 80 CLOUDFLARENETUS United States 19->41 31 C:\Users\user\AppData\Roaming\...\MZ.exe, PE32 19->31 dropped 55 Tries to steal Mail credentials (via file access) 19->55 57 Tries to harvest and steal browser information (history, passwords, etc) 19->57 27 MZ.exe 19->27         started        43 245.246.1.0.in-addr.arpa 22->43 45 104.22.18.188, 49757, 80 CLOUDFLARENETUS United States 22->45 29 MZ.exe 2 22->29         started        file10 signatures11 process12 signatures13 67 Multi AV Scanner detection for dropped file 24->67 69 Machine Learning detection for dropped file 24->69
Threat name:
Win32.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-05-12 04:04:42 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
17 of 47 (36.17%)
Threat level:
  5/5
Result
Malware family:
stormkitty
Score:
  10/10
Tags:
family:stormkitty spyware stealer
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Loads dropped DLL
Reads local data of messenger clients
Reads user/profile data of web browsers
Executes dropped EXE
StormKitty
StormKitty Payload
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_StormKitty
Author:ditekSHen
Description:Detects StormKitty infostealer
Rule name:pe_imphash
Rule name:Quasar_RAT_1
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Stealer_word_in_memory
Author:James_inthe_box
Description:The actual word stealer in memory

File information


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

Malspam

QuasarRAT

Executable exe d5d6dcf7e05158c3d2abc10588ab6ca17cb2d4082720d8847b28894cafc0ead6

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-12 06:05:06 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
15) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
16) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
17) [C0017] Process Micro-objective::Create Process
18) [C0038] Process Micro-objective::Create Thread