MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89. 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


Threat unknown


Vendor detections: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
SHA3-384 hash: 8bf288d8ade5580717ec408442a00085ee37bfe75fa9220b1a0f23a7335a4467eb29cb333f2081b578cdc6d4ffcae3f1
SHA1 hash: bcf6d09a1356cf8f0264f1335fbd6a0d2ee19048
MD5 hash: a0a3c31da02cbaaeadb89809f1d9d37f
humanhash: vermont-stream-illinois-may
File name:Comprobante de pago adjunto_pdf.exe
Download: download sample
File size:328'704 bytes
First seen:2025-03-04 14:15:28 UTC
Last seen:2025-03-04 15:22:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 6144:VJD/+aa4vu/+qoaZKgugysxtY9p9SvCDQmpo:ffvu2q0guifjvCDQIo
Threatray 2'951 similar samples on MalwareBazaar
TLSH T1AF64C507F98B89A2F2457772C58F440043E4D581779FDB8A7D8EA3AA49437BAED0134B
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 James_inthe_box
Tags:exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
482
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
Verdict:
Suspicious activity
Analysis date:
2025-03-04 08:15:16 UTC
Tags:
upx
Link:
https://app.any.run/tasks/e0968702-74e2-4df5-a69f-5f4ed1b75595

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.BackdoorX-gen.26291.5603.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c6b693c668b65489bee38b
Tags:
virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt to an infection source
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Creating a window
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade net_reactor obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/67c70b373c5f644bd9425032/reports/78a777f0-8d64-43ce-8a66-e5fa55a6a174/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ee4a6556-2ed9-4c1f-8bd5-8976a617cbd0
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1629259
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Drops VBS files to the startup folder
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Generic Dropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1629259 Sample: Comprobante de pago adjunto... Startdate: 04/03/2025 Architecture: WINDOWS Score: 100 27 toyscenter.cl 2->27 29 showip.net 2->29 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 9 other signatures 2->49 8 Comprobante de pago adjunto_pdf.exe 15 5 2->8         started        13 wscript.exe 1 2->13         started        signatures3 process4 dnsIp5 31 toyscenter.cl 190.171.170.94, 443, 49699, 49719 CTCCORPSATELEFONICAEMPRESASCL Chile 8->31 23 C:\Users\user\AppData\...\DefaultAlias.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\...\DefaultAlias.vbs, ASCII 8->25 dropped 51 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->51 15 InstallUtil.exe 15 8->15         started        53 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->53 19 DefaultAlias.exe 14 2 13->19         started        file6 signatures7 process8 dnsIp9 33 showip.net 162.55.60.2, 49971, 80 ACPCA United States 15->33 35 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->35 37 Tries to steal Mail credentials (via file / registry access) 15->37 39 Tries to harvest and steal browser information (history, passwords, etc) 15->39 41 Multi AV Scanner detection for dropped file 19->41 21 InstallUtil.exe 19->21         started        signatures10 process11
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-03-03 19:32:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 37 (45.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ogu7g5xj7qhkumk5neofmqqwz36ldaahv2fs5iyymbhbjzyu36eq._file
Verdict:
malicious
Label(s):
darkcloudstealer
Create hunting rule
Similar samples:
70ac7d4fc73d8eec8b9f9137a4d6aff5c9d41138aa05caaeedccdab088fceba6
71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
885dd00d5656c9c177ff310d935192fbe1c958b3102e2694f1586c86dc46ec83
bdf37be408054aa07a05fb66d36fd7fde1447fd3d005d12023c98db6dc3f6d96
e6c0136177ada65d722bacab76eaa4e65b7f6dff237198cc05f3f2a29055ed1e
error
fd42007d0a54366b5fe9c62f0041fccf419a230a394bb3d411ebd0eff1cd1c8f
+ 2'941 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery
Link:
https://tria.ge/reports/250304-rk7rzasqz5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1a870619-8dad-4f60-8ead-55ad9fe9e90d
Unpacked files
SH256 hash:
71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89
MD5 hash:
a0a3c31da02cbaaeadb89809f1d9d37f
SHA1 hash:
bcf6d09a1356cf8f0264f1335fbd6a0d2ee19048
Link:
https://www.unpac.me/results/3cf15a11-b3ca-4977-afdb-f48d3c86a452/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/71a9f376e9fc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89

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: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

Executable exe 71a9f376e9fc0eaa315d691c564216cefcb18007ae8b2ea318604e14e714df89

(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 (GUARD_CF)high

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