MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7. 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: 18


Intelligence 18 IOCs YARA 5 File information Comments
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SHA256 hash: fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
SHA3-384 hash: d0af12cab599c6631bfe1f2fc7ac6fde5a100c8e6443d76862a4156925cf52a374d986311ac7f63553b31b8d12e76cff
SHA1 hash: 7c7ad3ba48bf9ce3e2b487d98b6a66d4d631892a
MD5 hash: 72c1f40eafabdcdb3662d1dad9ee2230
humanhash: mango-steak-connecticut-vegan
File name:doc_Zapytanie - Oferta POLSKA 91044PL.com
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'701'760 bytes
First seen:2024-09-11 08:23:17 UTC
Last seen:2024-09-11 09:24:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 98304:sd403a+fJYbXSHFK7OVTCEr/x8TOdT2J978fB:sdxf8iZZyTq2Jp85
TLSH T11206338110798B1EEDFB46B12521B2300F2215723A61C9E95E73E3C91CDEF8E561BD9B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter Anonymous
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
420
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
doc_Zapytanie - Oferta POLSKA 91044PL.com
Verdict:
Malicious activity
Analysis date:
2024-09-11 08:24:57 UTC
Tags:
rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/53a504b8-ff0b-4851-8336-e3350cf862b6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.18121.2393.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e153a4751db35a8b9f7215
Tags:
Execution Generic Network Static Stealth Msil
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66e153a3adc6c63aa37dd714/reports/315488fd-0d8d-4eb9-a559-df522c6cf8e0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
Result
Verdict:
UNKNOWN
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:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fda5d9ec-9fb8-4ae5-bfff-946d7d1cd4bb
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509224
Signature
AI detected suspicious sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1509224 Sample: doc_Zapytanie - Oferta POLS... Startdate: 11/09/2024 Architecture: WINDOWS Score: 100 60 twart.myfirewall.org 2->60 62 windowsupdatebg.s.llnwi.net 2->62 64 ipwho.is 2->64 76 Multi AV Scanner detection for domain / URL 2->76 78 Suricata IDS alerts for network traffic 2->78 80 Found malware configuration 2->80 82 11 other signatures 2->82 11 doc_Zapytanie - Oferta POLSKA 91044PL.com.exe 3 2->11         started        15 workbook.exe 2 2->15         started        signatures3 process4 file5 56 doc_Zapytanie - Of...91044PL.com.exe.log, ASCII 11->56 dropped 92 Injects a PE file into a foreign processes 11->92 17 doc_Zapytanie - Oferta POLSKA 91044PL.com.exe 4 11->17         started        21 workbook.exe 2 15->21         started        23 workbook.exe 15->23         started        signatures6 process7 file8 54 C:\Users\user\AppData\...\workbook.exe, PE32 17->54 dropped 74 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->74 25 workbook.exe 3 17->25         started        28 schtasks.exe 1 17->28         started        signatures9 process10 signatures11 88 Multi AV Scanner detection for dropped file 25->88 90 Machine Learning detection for dropped file 25->90 30 workbook.exe 15 4 25->30         started        35 conhost.exe 28->35         started        process12 dnsIp13 66 twart.myfirewall.org 213.159.74.80, 49735, 9792 CTINET-ASCTINETAutonomousSystemRU Russian Federation 30->66 68 ipwho.is 195.201.57.90, 443, 49737 HETZNER-ASDE Germany 30->68 58 C:\Users\user\AppData\...\WVguSISHHEaz.bat, DOS 30->58 dropped 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->70 72 Installs a global keyboard hook 30->72 37 cmd.exe 30->37         started        40 schtasks.exe 1 30->40         started        42 schtasks.exe 30->42         started        file14 signatures15 process16 signatures17 84 Uses ping.exe to sleep 37->84 86 Uses ping.exe to check the status of other devices and networks 37->86 44 conhost.exe 37->44         started        46 chcp.com 37->46         started        48 PING.EXE 37->48         started        50 conhost.exe 40->50         started        52 conhost.exe 42->52         started        process18
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7/
Threat name:
ByteCode-MSIL.Trojan.SnakeLogger
Create hunting rule
Status:
Malicious
First seen:
2024-09-11 08:24:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7u5qhhpt5gswlnuwij3ptddb2rkv6pz5vpy2tv3gat476tklh63q._file
Verdict:
malicious
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:long leg discovery spyware trojan
Link:
https://tria.ge/reports/240911-kapp3s1bmr/
Behaviour
Runs ping.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
twart.myfirewall.org:9792
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/29a1bc6d-26ff-4dc4-9a25-40651cef022e
Unpacked files
SH256 hash:
5c13140757a0e40489fb1ed154dac2a03c549f78c10dece415d2c34bb713a70a
MD5 hash:
bbaddad353204f01a5135b00ae446f34
SHA1 hash:
e46049d75f1f772b33cb551fd6613ace5f834944
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/671d52a0-e107-4618-a6b2-cc58b6be00e5/
SH256 hash:
c5cb97fbe4243df1a99a9c82f44ad555f283fad9f4b15b791faebe5048c8fc99
MD5 hash:
3e8b57c2be9df63483a368b71ccb938b
SHA1 hash:
deb26a1b7f616c8d392ae55dd279140b034a4060
Detections:
QuasarRAT
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
win_quasarrat_j2
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
Link:
https://www.unpac.me/results/671d52a0-e107-4618-a6b2-cc58b6be00e5/
Parent samples :
5a3a32262eb6d6ca3126a6055e32cd1c0a680637b3f238d0fbb0e36bc9b8081d
3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
d80b06effbd34b981b32276034abe3c118ac51a53ace4a253bb52c90cb18f13d
a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
c40f2fe5758bf18b22131930c426b2551b191d4ec50ea072a232895d006eace1
c5cb97fbe4243df1a99a9c82f44ad555f283fad9f4b15b791faebe5048c8fc99
6230049aca6cf64db37be7c35946481041629c4f40311f5a39ba45303bd992e7
f9fe40ca4d842619322a11c4013a2210132d4c7afa0c4ae88be17f13ee6d1b16
fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/671d52a0-e107-4618-a6b2-cc58b6be00e5/
SH256 hash:
fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
MD5 hash:
72c1f40eafabdcdb3662d1dad9ee2230
SHA1 hash:
7c7ad3ba48bf9ce3e2b487d98b6a66d4d631892a
Link:
https://www.unpac.me/results/671d52a0-e107-4618-a6b2-cc58b6be00e5/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fd3b039df3e9/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/fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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