MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
SHA3-384 hash: ec9be29bb7137d0fcf663d317f36d763a24c3140fdd44402835aba19e9d9c7326099b45f66df90fb53a27840746238c3
SHA1 hash: d005c0dc81b6934cc48438ad3b32042ad67deb07
MD5 hash: 889a3afb40737c487874393ad4915eeb
humanhash: friend-blue-tennessee-may
File name:ZKB - Zahlungsbestätigung an 20240828.pdf.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'821'568 bytes
First seen:2024-08-28 02:16:52 UTC
Last seen:2024-08-28 13:35:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 98304:cDMgfL0MjhdmEYApF4h1LfuaIy5Sp+l75v:uhdwApFAmaIywp+l7
TLSH T1E506330525D6AFA2C8DF07B98652058447330D48AD81F3EF2C9E7CE17DE6BC86586E93
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
File icon (PE):PE icon
dhash icon 4db292f2d88cb40b (15 x RemcosRAT, 13 x AgentTesla, 7 x NanoCore)
Reporter threatcat_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
15
# of downloads :
421
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
ZKB - Zahlungsbestätigung an 20240828.pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-08-28 02:19:44 UTC
Tags:
rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/5087cb36-06fa-4f30-a730-c3bfe70e701f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.1484.16261.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ce88a0fe69a9e560499e91
Tags:
Execution Generic Network Stealth Nekark
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process from a recently created file
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/df378332-8e47-480b-8576-ea49f85e6cdc
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1500237
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Uses an obfuscated file name to hide its real file extension (double extension)
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: 1500237 Sample: ZKB - Zahlungsbest#U00e4tig... Startdate: 28/08/2024 Architecture: WINDOWS Score: 100 44 twart.myfirewall.org 2->44 46 ipwho.is 2->46 54 Multi AV Scanner detection for domain / URL 2->54 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 60 12 other signatures 2->60 11 ZKB - Zahlungsbest#U00e4tigung an 20240828.pdf.exe 3 2->11         started        15 workbook.exe 2 2->15         started        signatures3 process4 file5 42 ZKB - Zahlungsbest...0240828.pdf.exe.log, ASCII 11->42 dropped 68 Injects a PE file into a foreign processes 11->68 17 ZKB - Zahlungsbest#U00e4tigung an 20240828.pdf.exe 4 11->17         started        21 workbook.exe 2 15->21         started        23 workbook.exe 15->23         started        signatures6 process7 file8 40 C:\Users\user\AppData\...\workbook.exe, PE32 17->40 dropped 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->52 25 workbook.exe 3 17->25         started        28 schtasks.exe 1 17->28         started        signatures9 process10 signatures11 62 Multi AV Scanner detection for dropped file 25->62 64 Machine Learning detection for dropped file 25->64 66 Injects a PE file into a foreign processes 25->66 30 workbook.exe 15 2 25->30         started        34 conhost.exe 28->34         started        process12 dnsIp13 48 twart.myfirewall.org 213.159.74.80, 49735, 9792 CTINET-ASCTINETAutonomousSystemRU Russian Federation 30->48 50 ipwho.is 195.201.57.90, 443, 49737 HETZNER-ASDE Germany 30->50 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->70 72 Installs a global keyboard hook 30->72 36 schtasks.exe 1 30->36         started        signatures14 process15 process16 38 conhost.exe 36->38         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gjk3xiu5dvg6hdfz24tdmji62gkrn3s4becrf5btf44lqn6pcpya._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/240828-cqpq1s1dpf/
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 payload
Malware Config
C2 Extraction:
twart.myfirewall.org:9792
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8e30157f-9f8f-4f86-b459-7a9941ccce7c
Unpacked files
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/21365758-7d28-478d-aeba-b146806a3bde/
Parent samples :
5a3a32262eb6d6ca3126a6055e32cd1c0a680637b3f238d0fbb0e36bc9b8081d
3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
d80b06effbd34b981b32276034abe3c118ac51a53ace4a253bb52c90cb18f13d
a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
c40f2fe5758bf18b22131930c426b2551b191d4ec50ea072a232895d006eace1
c5cb97fbe4243df1a99a9c82f44ad555f283fad9f4b15b791faebe5048c8fc99
6230049aca6cf64db37be7c35946481041629c4f40311f5a39ba45303bd992e7
f9fe40ca4d842619322a11c4013a2210132d4c7afa0c4ae88be17f13ee6d1b16
fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
SH256 hash:
b69973fbdec6235d0a540861951ebe7525a557fbc67e89685313b586199cdf51
MD5 hash:
2345408b6dc9d075abdce218842eb319
SHA1 hash:
a988a2eacbda78b9a36ebb5db3f9f269767c3d24
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/21365758-7d28-478d-aeba-b146806a3bde/
SH256 hash:
66c34fb52ab239fdcbd5d61f0b540e45399b986a5379398e0d72014778635226
MD5 hash:
6faa7caee083f4dba03910c95ad29237
SHA1 hash:
8c21b7b035471ed301ef6138c657e865f596f3d3
Link:
https://www.unpac.me/results/21365758-7d28-478d-aeba-b146806a3bde/
SH256 hash:
eb61f1b24c826a71deb709d66654221bb180f6d043bb02eaeaa03020afe8d503
MD5 hash:
ca727d572085bfc7f0b3d844f9716533
SHA1 hash:
44a129f35dadbfaf4af496ff87f7721f37083d2f
Link:
https://www.unpac.me/results/21365758-7d28-478d-aeba-b146806a3bde/
SH256 hash:
3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
MD5 hash:
889a3afb40737c487874393ad4915eeb
SHA1 hash:
d005c0dc81b6934cc48438ad3b32042ad67deb07
Link:
https://www.unpac.me/results/21365758-7d28-478d-aeba-b146806a3bde/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3255bba29d1d/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/3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0

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: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: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.

Malspam

QuasarRAT

img d4b403a71a8609e194a0ceb988b21511e82da194bd809fbe50d174ee5e6dc6f4

QuasarRAT

Executable exe 3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 d4b403a71a8609e194a0ceb988b21511e82da194bd809fbe50d174ee5e6dc6f4
  
Dropped by
MD5 417aef4e7e9b9ea10b6de9fbaaed02ca

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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