MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc. 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: 11


Intelligence 11 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc
SHA3-384 hash: 70ac055f323201558e823565f29cd52d789279e18e1a6bf3de53196a00a14871a8e569c3bd0b460cba6618f2d8a53e25
SHA1 hash: 399a2b17af8ca60d833a67845aa06bea2fb23829
MD5 hash: 4ff0a8472752f9b354de114f42db98ad
humanhash: jig-sodium-sad-august
File name:MV TBN_SHIP PARTICULARS.docx.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'208'832 bytes
First seen:2022-06-25 08:48:17 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 24576:H0mDPAqEPR6B+98YOKmeadRCEZyksG40ydbYtqYqqwFnIkLz:gq6oU98zRJoR0oYtqYqnn
TLSH T137456A2D3A031B62FD1DD070D9121A09BB620B572383B9D25FDB99CA9B5FDEEDC05884
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon a9a9ada361869903 (32 x RemcosRAT, 2 x QuasarRAT, 2 x Expiro)
Reporter Anonymous
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/283234/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending a custom TCP request
Launching a process
Running batch commands
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed quasar venomrat
Link:
https://www.filescan.io/uploads/62b6cbff62d792dc57440d8f/reports/1ebce625-6a91-40b4-8c46-22d874c6fe69/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/0923d4fa-b9c3-410e-aecf-bf769bf4645e
Result
Threat name:
AgentTesla, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1019704
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Contains functionality to disable the Task Manager (.Net Source)
Contains functionality to hide user accounts
Contains functionality to prevent local Windows debugging
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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
Snort IDS alert for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected MultiObfuscated
Yara detected Quasar RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 652200 Sample: MV TBN_SHIP PARTICULARS.docx.exe Startdate: 25/06/2022 Architecture: WINDOWS Score: 100 57 Snort IDS alert for network traffic 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Antivirus detection for URL or domain 2->61 63 19 other signatures 2->63 8 MV TBN_SHIP PARTICULARS.docx.exe 2 2->8         started        12 olsd.exe 2->12         started        14 explorer.exe 5 2->14         started        16 2 other processes 2->16 process3 file4 49 C:\...\MV TBN_SHIP PARTICULARS.docx.exe.log, ASCII 8->49 dropped 73 Writes to foreign memory regions 8->73 75 Allocates memory in foreign processes 8->75 77 Injects a PE file into a foreign processes 8->77 18 AppLaunch.exe 15 6 8->18         started        23 cmd.exe 3 8->23         started        25 cmd.exe 1 8->25         started        79 Multi AV Scanner detection for dropped file 12->79 81 Machine Learning detection for dropped file 12->81 83 Tries to delay execution (extensive OutputDebugStringW loop) 12->83 27 wscript.exe 1 1 14->27         started        85 Contains functionality to prevent local Windows debugging 16->85 signatures5 process6 dnsIp7 51 prince1234.duckdns.org 192.169.69.26, 4782, 49789, 49833 WOWUS United States 18->51 53 ip-api.com 208.95.112.1, 49788, 80 TUT-ASUS United States 18->53 55 192.168.2.1 unknown unknown 18->55 41 C:\Users\user\AppData\Localxecution.vbs, ASCII 18->41 dropped 65 May check the online IP address of the machine 18->65 67 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->67 29 schtasks.exe 1 18->29         started        31 explorer.exe 1 18->31         started        43 C:\Users\user\AppData\Roaming\olsd\olsd.exe, PE32 23->43 dropped 45 C:\Users\user\...\olsd.exe:Zone.Identifier, ASCII 23->45 dropped 33 conhost.exe 23->33         started        69 Uses schtasks.exe or at.exe to add and modify task schedules 25->69 35 conhost.exe 25->35         started        37 schtasks.exe 1 25->37         started        47 C:\Users\user\AppData\Roaming\Venom.exe, PE32 27->47 dropped 71 Benign windows process drops PE files 27->71 file8 signatures9 process10 process11 39 conhost.exe 29->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc/
Threat name:
Win32.Trojan.Tiggre
Create hunting rule
Status:
Malicious
First seen:
2022-06-07 07:16:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
109
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=55bjfkjt4m2bq53nng4j6tf2n7c2zolu5thl3bjmbuy4yfqwdxga._file
Verdict:
malicious
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:venom client persistence spyware suricata trojan
Link:
https://tria.ge/reports/220625-kq1ghsfhc6/
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Executes dropped EXE
Quasar Payload
Quasar RAT
suricata: ET MALWARE Common RAT Connectivity Check Observed
Malware Config
C2 Extraction:
prince1234.duckdns.org:4782
Unpacked files
SH256 hash:
cd18f0e2ebdc2f42dfdb78c7065d3ec2c0462da97d8d423df6e792b809fb5f69
MD5 hash:
38264517c9197b5948e34eda12678928
SHA1 hash:
fed341f60eb609a55a3b342436ab5020c8f4402d
Link:
https://www.unpac.me/results/c93f03d5-e546-42fa-8a7d-d89747f5f599/
SH256 hash:
c1428ec7129ad3e36dad35d8992602cefcd6a593952834897424314fe029dd4b
MD5 hash:
67ca4c5eed9cab4b08064d4314dc0a86
SHA1 hash:
61dfa1d80d9e6b506d29e3897dd3ca08ade30988
Link:
https://www.unpac.me/results/c93f03d5-e546-42fa-8a7d-d89747f5f599/
Parent samples :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 hash:
3a96d9a797a3b6b3ea0d8264ed1078508df9557e2f453217d52a75907f9b9465
MD5 hash:
547ebc92cac936d8c3459d2765948f4a
SHA1 hash:
09c143d609b65b19a97289ca7645df2a0bc39c83
Link:
https://www.unpac.me/results/c93f03d5-e546-42fa-8a7d-d89747f5f599/
SH256 hash:
ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc
MD5 hash:
4ff0a8472752f9b354de114f42db98ad
SHA1 hash:
399a2b17af8ca60d833a67845aa06bea2fb23829
Link:
https://www.unpac.me/results/c93f03d5-e546-42fa-8a7d-d89747f5f599/
Malware family:
xRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef4292a933e3/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/ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc

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_EXE_Packed_Babel
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Babel
Rule name:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_Goliath
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Goliath
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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/283234/

Comments