MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841. 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


DarkTortilla


Vendor detections: 16


Intelligence 16 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
SHA3-384 hash: 4706f4dca2cb2f3ddbdd7c39f8efebb9709fc518a64a0a26941d39a08e1f0b0bcb47f2242f51e3dca8f83cc688bcd144
SHA1 hash: e425c28f12e3b9f14957c713f431d0af6c337e11
MD5 hash: 9d56bd80b1c4c8849d290755e90f99cd
humanhash: lactose-fillet-coffee-oklahoma
File name:Unicredit__Pagamento.pdf.bat
Download: download sample
Signature DarkTortilla
Create hunting rule
File size:838'656 bytes
First seen:2024-11-27 16:31:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'601 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:5PgzOQ2fmLZL41rjVZL3ANOZNMMizbXrnzYLQgRyGh0ceOv:5Pi2fmLZM53AQZ/inbzYLQgR/h0ce
Threatray 4'395 similar samples on MalwareBazaar
TLSH T1FC050204A7E65D9CF7FE6F76CC3552410E34B897A939F70D82C998FD0C6298188927A3
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 abuse_ch
Tags:bat DarkTortilla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
421
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Unicredit__Pagamento.pdf.bat.exe
Verdict:
Malicious activity
Analysis date:
2024-11-27 16:35:18 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/094d54ef-bc9e-43cd-b09a-936f50bd1b38

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.BackdoorX-gen.6311.31068.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67474985b31374f098353b3b
Tags:
gumen micro shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Running batch commands
Launching a process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated vbnet
Link:
https://www.filescan.io/uploads/674749867057c4c9cdc42ec3/reports/a39fcf51-f3aa-4a21-b465-92ba02b9bd10/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
Malware family:
OutSteel
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/28361f40-000b-4662-9b2f-43256c936af1
Result
Threat name:
Remcos, DarkTortilla
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1563984
Signature
.NET source code contains method to dynamically call methods (often used by packers)
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates autostart registry keys with suspicious names
Delayed program exit found
Detected Remcos RAT
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
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
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected AntiVM3
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1563984 Sample: Unicredit__Pagamento.pdf.bat.exe Startdate: 27/11/2024 Architecture: WINDOWS Score: 100 49 geoplugin.net 2->49 63 Suricata IDS alerts for network traffic 2->63 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 12 other signatures 2->69 9 8738.exe 3 2->9         started        12 Unicredit__Pagamento.pdf.bat.exe 4 2->12         started        signatures3 process4 file5 79 Multi AV Scanner detection for dropped file 9->79 81 Contains functionalty to change the wallpaper 9->81 83 Machine Learning detection for dropped file 9->83 87 6 other signatures 9->87 15 8738.exe 2 13 9->15         started        47 C:\...\Unicredit__Pagamento.pdf.bat.exe.log, ASCII 12->47 dropped 85 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->85 19 cmd.exe 3 12->19         started        22 cmd.exe 1 12->22         started        signatures6 process7 dnsIp8 53 41.216.183.218, 49882, 56792 AS40676US South Africa 15->53 55 geoplugin.net 178.237.33.50, 49892, 80 ATOM86-ASATOM86NL Netherlands 15->55 57 Detected Remcos RAT 15->57 43 C:\Users\user\AppData\Roaming\8738\8738.exe, PE32 19->43 dropped 45 C:\Users\user\...\8738.exe:Zone.Identifier, ASCII 19->45 dropped 59 Uses ping.exe to sleep 19->59 24 8738.exe 2 19->24         started        27 conhost.exe 19->27         started        29 PING.EXE 1 19->29         started        31 PING.EXE 1 19->31         started        61 Uses ping.exe to check the status of other devices and networks 22->61 33 reg.exe 1 1 22->33         started        35 PING.EXE 1 22->35         started        38 conhost.exe 22->38         started        file9 signatures10 process11 dnsIp12 71 Hides that the sample has been downloaded from the Internet (zone.identifier) 24->71 73 Injects a PE file into a foreign processes 24->73 40 8738.exe 24->40         started        75 Creates autostart registry keys with suspicious names 33->75 51 127.0.0.1 unknown unknown 35->51 signatures13 process14 signatures15 77 Detected Remcos RAT 40->77
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ohpo65tthqgqbyorkwrs2outaz2vorkanpvz2honiziixr7ntbaq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
4b3b8c9037168a82409fbe027ecf77ba5b1b9262960b07dde8e15acfb1e3a5df
DarkTortilla
5324e064b98586e1f727eac2ab089af2c466e9b702af73d7fff281e17f725ee8
DarkTortilla
7495bdb0be9555982d0aadde5a02917d5cf41af4ad74a73c617b3d632d0e6d6d
DarkTortilla
8e7d1931cfe215a12acad3beb975cd78099a295a721069b35c05b469e2f703f9
DarkTortilla
aa4ad373d2e9b58a03f4e5526bfec18522c49f75f0980d0fce33469d88506b3c
DarkTortilla
ae86ff848167aff1ce842e1c0e77bea0a84dfcb0ec4f115086c99225775c80c4
DarkTortilla
bd88a8e4487129f6545e17ca21c82b24f56944b4e25ca2f62a4a21a5dea137af
DarkTortilla
error
DarkTortilla
f74adb5022803397214f21afffa91f0e5579bdd80b0fd0de0ca62f9b920b994d
DarkTortilla
fc5a104616191074e73ca74e64056c26e129b75395e57257eebf629772200d21
DarkTortilla
+ 4'385 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery persistence rat
Link:
https://tria.ge/reports/241127-t1ykcaxnap/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Remcos
Remcos family
Malware Config
C2 Extraction:
41.216.183.218:56792
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/13dc3fcb-0361-491a-bd7d-cc2c78332b33
Unpacked files
SH256 hash:
71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
MD5 hash:
9d56bd80b1c4c8849d290755e90f99cd
SHA1 hash:
e425c28f12e3b9f14957c713f431d0af6c337e11
Link:
https://www.unpac.me/results/42ad8d0d-147f-4ffd-a925-173401bfe796/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/71deef76733c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.77
Link:
https://yomi.yoroi.company/submissions/71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841

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:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
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 (GUARD_CF)high

Comments