MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
SHA3-384 hash: c444c608780872f9a71f1c1d02ed18e241791d2df479ee2dfa0251158d32de05b59c6629a7261faf52807a1ea5040072
SHA1 hash: 8f13321bb29651c263227c7f796e85cb2527830e
MD5 hash: fe0244480b7be035c478b4778d082ed3
humanhash: freddie-timing-nineteen-quiet
File name:rNuevoPedidoPO-00843.pdf.com
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'750'400 bytes
First seen:2024-08-29 19:34:48 UTC
Last seen:2024-09-04 10:58:45 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 49152:au2JhK0dN9R2QAhDm2NMDy0h7EFM6mNaZWZQ303GS3Wb9Slw+NVa3nhjzCAIjq4m:V2e0tAhayzFM6T5gGJbElw+P4nh6N
TLSH T1300633ABD9A9C071E45E46B4D9CF62A0337134EB4911E3CEB9BCAFC7F270166D204496
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 FXOLabs
Tags:com exe QuasarRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
389
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
rNuevoPedidoPO-00843.pdf.com
Verdict:
Malicious activity
Analysis date:
2024-08-29 19:46:49 UTC
Tags:
rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/6e3b1caa-e2fb-432f-bb82-ce6fa715c741

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.32226.4749.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d0cd88fe69a9e56049e858
Tags:
Execution Generic Network Static Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Searching for the window
Creating a window
Restart of the analyzed sample
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66d0cd7797cdd8ae02a75eca/reports/bc5a8668-acfb-4fe4-9125-c08c47e8740e/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
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/f7880644-205a-465a-9574-df2ba59aa222
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1501404
Signature
.NET source code contains potential unpacker
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 Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1501404 Sample: rNuevoPedidoPO-00843.pdf.com.exe Startdate: 29/08/2024 Architecture: WINDOWS Score: 100 54 twart.myfirewall.org 2->54 56 ipwho.is 2->56 64 Suricata IDS alerts for network traffic 2->64 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 9 other signatures 2->70 11 rNuevoPedidoPO-00843.pdf.com.exe 3 2->11         started        15 workbook.exe 2 2->15         started        signatures3 process4 file5 48 C:\...\rNuevoPedidoPO-00843.pdf.com.exe.log, ASCII 11->48 dropped 78 Uses schtasks.exe or at.exe to add and modify task schedules 11->78 80 Injects a PE file into a foreign processes 11->80 17 rNuevoPedidoPO-00843.pdf.com.exe 4 11->17         started        21 workbook.exe 2 15->21         started        23 workbook.exe 15->23         started        25 workbook.exe 15->25         started        signatures6 process7 file8 46 C:\Users\user\AppData\...\workbook.exe, PE32 17->46 dropped 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->62 27 workbook.exe 3 17->27         started        30 schtasks.exe 1 17->30         started        signatures9 process10 signatures11 72 Multi AV Scanner detection for dropped file 27->72 74 Machine Learning detection for dropped file 27->74 76 Injects a PE file into a foreign processes 27->76 32 workbook.exe 15 2 27->32         started        36 workbook.exe 27->36         started        38 workbook.exe 27->38         started        40 conhost.exe 30->40         started        process12 dnsIp13 50 twart.myfirewall.org 213.159.74.80, 49724, 9792 CTINET-ASCTINETAutonomousSystemRU Russian Federation 32->50 52 ipwho.is 195.201.57.90, 443, 49726 HETZNER-ASDE Germany 32->52 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->58 60 Installs a global keyboard hook 32->60 42 schtasks.exe 1 32->42         started        signatures14 process15 process16 44 conhost.exe 42->44         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2024-08-29 19:35:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uoeogt7szndloggeinqyurmxi2f7yirwdfoanpgl7jy5x5ouor4q._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/240829-yan1fazarj/
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
Loads dropped DLL
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/9b4c99d8-02d9-4c63-ab7a-6fe3fd7aebc7
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/c5bff58a-43c5-4010-9f46-07922c410834/
Parent samples :
5a3a32262eb6d6ca3126a6055e32cd1c0a680637b3f238d0fbb0e36bc9b8081d
3255bba29d1d4de38cb9d72636251ed19516ee5c090512f4332f38b837cf13f0
d80b06effbd34b981b32276034abe3c118ac51a53ace4a253bb52c90cb18f13d
a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
c40f2fe5758bf18b22131930c426b2551b191d4ec50ea072a232895d006eace1
c5cb97fbe4243df1a99a9c82f44ad555f283fad9f4b15b791faebe5048c8fc99
6230049aca6cf64db37be7c35946481041629c4f40311f5a39ba45303bd992e7
f9fe40ca4d842619322a11c4013a2210132d4c7afa0c4ae88be17f13ee6d1b16
fd3b039df3e9a565b6964276f98c61d4555f3f3dabf1a9d76604f9ff4d4b3fb7
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
SH256 hash:
c22b6e2cfed3d7e9e0bc312aedb34dd32d9b8049319032ddc7557c9756cf07f7
MD5 hash:
afafe33158d5f82d678539141bbd0455
SHA1 hash:
5746d7bc26825f9bbf73487ee0dd5324d9a19288
Link:
https://www.unpac.me/results/c5bff58a-43c5-4010-9f46-07922c410834/
SH256 hash:
da807858447243d8744c9483cc9848f5f0cbdb9bdd2bd60c6308d32ee61bd72f
MD5 hash:
5787f237acf3cfc50d10a5a0a1236b5f
SHA1 hash:
5506c0d4d0005c7b0425d32e64332f7ecdaf5976
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/c5bff58a-43c5-4010-9f46-07922c410834/
SH256 hash:
a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479
MD5 hash:
fe0244480b7be035c478b4778d082ed3
SHA1 hash:
8f13321bb29651c263227c7f796e85cb2527830e
Link:
https://www.unpac.me/results/c5bff58a-43c5-4010-9f46-07922c410834/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a388e34ff2cb/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/a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479

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:AlternativesExample1
Create hunting rule
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.

Malspam

QuasarRAT

Executable exe a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479

(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

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