MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943. 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: 19


Intelligence 19 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943
SHA3-384 hash: 3b8a9253ce0f54791131eb6173fc3d8ad269a884fd61bd40386c076cb90bdf369f5f311b0f0e1e29d73fb0500fa3b7f8
SHA1 hash: bf67ce43accf497ffa74caa94a5c09209b974f07
MD5 hash: 7ced1e3728202bb14170fdbcde4f69b2
humanhash: arizona-uncle-emma-artist
File name:pdf_2025 QUOTATION - #202401146778.pdf (83kb).com
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'779'584 bytes
First seen:2025-01-14 10:52:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 98304:K4QM2Ie6bMOMcv6NVhbK3H055W5XHx85mSQVaT+50WkdEZM:lsILGjbKkfWhHW5mnVapWcg
TLSH T11906338465AADE01D08927391CE3E3F89B36BD96C560C613EFE93FE37D69B122101647
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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 TeamDreier
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
40
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
pdf_2025 QUOTATION - #202401146778.pdf (83kb).com
Verdict:
Malicious activity
Analysis date:
2025-01-14 07:47:53 UTC
Tags:
netreactor rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/f759a4c3-11c6-424c-9de0-3386d5a81a32

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678642194487910100ded286
Tags:
autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67864219378c50dc993fb422/reports/99e4fa82-e93f-4b7b-999c-1f51229c8c1a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943
Result
Verdict:
SUSPICIOUS
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f4bb182f-70e4-4d39-b138-7beacd4beecc
Result
Threat name:
PureLog Stealer, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1590630
Signature
AI detected suspicious sample
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 dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected PureLog Stealer
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1590630 Sample: pdf_2025 QUOTATION - #20240... Startdate: 14/01/2025 Architecture: WINDOWS Score: 100 46 twart.myfirewall.org 2->46 48 ipwho.is 2->48 50 bg.microsoft.map.fastly.net 2->50 58 Suricata IDS alerts for network traffic 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 10 other signatures 2->64 11 pdf_2025 QUOTATION - #202401146778.pdf (83kb).com.exe 3 2->11         started        15 Exccelworkbook.exe 2 2->15         started        signatures3 process4 file5 44 pdf_2025 QUOTATION... (83kb).com.exe.log, ASCII 11->44 dropped 70 Injects a PE file into a foreign processes 11->70 17 pdf_2025 QUOTATION - #202401146778.pdf (83kb).com.exe 4 11->17         started        21 Exccelworkbook.exe 2 15->21         started        signatures6 process7 file8 42 C:\Users\user\AppData\...xccelworkbook.exe, PE32 17->42 dropped 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->56 23 Exccelworkbook.exe 3 17->23         started        26 schtasks.exe 1 17->26         started        signatures9 process10 signatures11 66 Multi AV Scanner detection for dropped file 23->66 68 Machine Learning detection for dropped file 23->68 28 Exccelworkbook.exe 15 2 23->28         started        32 Exccelworkbook.exe 23->32         started        34 Exccelworkbook.exe 23->34         started        36 conhost.exe 26->36         started        process12 dnsIp13 52 twart.myfirewall.org 94.156.177.117, 49797, 9792 NET1-ASBG Bulgaria 28->52 54 ipwho.is 195.201.57.90, 443, 49814 HETZNER-ASDE Germany 28->54 72 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->72 74 Installs a global keyboard hook 28->74 38 schtasks.exe 1 28->38         started        signatures14 process15 process16 40 conhost.exe 38->40         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943/
Threat name:
Win32.Backdoor.Quasarrat
Create hunting rule
Status:
Malicious
First seen:
2025-01-14 07:07:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hpxe2kvthlb7aycrg3yjzosvmfanmlhjuda33mldsfm3ioxfrfbq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:code discovery spyware trojan
Link:
https://tria.ge/reports/250114-myyzrsyjbp/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
twart.myfirewall.org:9792
rency.ydns.eu:5287
wqo9.firewall-gateway.de:8841
code1.ydns.eu:5287
wqo9.firewall-gateway.de:9792
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/88762228-1c20-4635-ac71-f8b385f748f0
Unpacked files
SH256 hash:
ae641f9914ffe273391608a6917a0963f70f3f97b8dbbd0ce9899773974abde5
MD5 hash:
d136ab1f81383919380c7f894f239c4a
SHA1 hash:
9104c8ea330912069cf7ff4bd2643a0d55ce8782
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
win_quasarrat_j2
Create hunting rule
win_quasar_rat_client
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_QuasarStealer
Create hunting rule
Link:
https://www.unpac.me/results/e7f9ac87-b6e0-4d22-9c4f-628c67dc00bb/
Parent samples :
2234c3a3350dbeba11b7564dc52d5aa1252777f9ffe8dcf4027dcb54fc4542aa
1787fd4fd81dca24ca10625e93d43168eea906184da17183ba53a306856c0f28
68fe78c0a8961da3a1121f95ebe63003c9a7c359edf68542d971d92632357422
3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943
b35f831b82f4648f91b37d8b8799cb26d30b069a52cf12e14ba9b4c06e8fb571
SH256 hash:
08c92ad27fac5bdadc63bc430efba786db8a5bc27647065e45e053da32cebc56
MD5 hash:
73bc0369f504cff21092bed1f158b770
SHA1 hash:
7990e0d0ac218ea827bdddb392979c037bc02943
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/e7f9ac87-b6e0-4d22-9c4f-628c67dc00bb/
SH256 hash:
fe26a8a1df970da362283c68cfb162d4f1acc95a82ef2e8046a567083e658465
MD5 hash:
cd4c77cd32b55506c5682eba826ef4fa
SHA1 hash:
2205c17610803a3dbc2523a753f17cf9de0bc5b2
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/e7f9ac87-b6e0-4d22-9c4f-628c67dc00bb/
Parent samples :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 hash:
3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943
MD5 hash:
7ced1e3728202bb14170fdbcde4f69b2
SHA1 hash:
bf67ce43accf497ffa74caa94a5c09209b974f07
Link:
https://www.unpac.me/results/e7f9ac87-b6e0-4d22-9c4f-628c67dc00bb/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3bee4d2ab33a/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/3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifacts observed in infostealers
Rule name:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:MALWARE_Win_QuasarStealer
Create hunting rule
Author:ditekshen
Description:Detects Quasar infostealer
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:quasarrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RC6_Constants
Create hunting rule
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:Windows_Generic_Threat_803feff4
Create hunting rule
Author:Elastic Security
Rule name:win_quasar_rat_client
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.

File information

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

Malspam

QuasarRAT

Executable exe 3bee4d2ab33ac3f0605136f09cba556140d62ce9a0c1bdb1639159b43ae58943

(this sample)

  
Delivery method
Distributed via e-mail attachment

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

Comments