MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123. 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


AgentTesla


Vendor detections: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123
SHA3-384 hash: 4da9ae91b1a800a0fe5f46f56e67a6dfcddd974da9e3b4949eeaa26b2dd2691f5c359701c2d74879258a568101fb7f8e
SHA1 hash: 02ebe0bafca91fa475b2bd47c368c4ca330898b1
MD5 hash: 6289c26cc1b8d5b2257c4d78f2496585
humanhash: wolfram-mountain-mississippi-quebec
File name:polyester -Nylon xls.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:812'032 bytes
First seen:2024-01-31 10:59:46 UTC
Last seen:2024-01-31 12:50:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:bL+aefZumiXlRtigIw2BNLCXqRQtHdqrt218q72dY8lUP7r9r/+pppppppppppp9:bSa6u/ZKCcmdqw6S2dRU1q
Threatray 14 similar samples on MalwareBazaar
TLSH T15105BD84D9545AA0ED2C9BB12636CD3193333EAEA834D56C2CDE3DA73BFB7921111853
TrID 30.2% (.EXE) Win64 Executable (generic) (10523/12/4)
18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
14.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.9% (.EXE) Win32 Executable (generic) (4505/5/1)
5.9% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon d4c4c4d8ccd4f0cc (241 x AgentTesla, 65 x Loki, 41 x Formbook)
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
278
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123.exe
Verdict:
Malicious activity
Analysis date:
2024-01-31 11:44:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d10f7211-7732-47af-a8ec-51c329a18d41

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/473753/
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.27071.16237.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65ba283bbc91f83c8073cec6/reports/6d58ad6c-7fac-4ef2-ac61-52aaff0a4165/overview
Verdict:
Malicious
Labled as:
Ransom.CryptoJoker.Generic
Link:
https://www.hybrid-analysis.com/sample/56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123
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:
Unknown
Link:
https://analyze.intezer.com/analyses/3f6c858f-f688-494d-a780-0b7c39743cba
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1383975
Signature
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Adds extensions / path to Windows Defender exclusion list (Registry)
Antivirus detection for URL or domain
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Creates multiple autostart registry keys
Disables UAC (registry)
Drops PE files with benign system names
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Schedule system process
Sigma detected: Suspect Svchost Activity
Sigma detected: System File Execution Location Anomaly
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1383975 Sample: polyester_-Nylon_xls.exe Startdate: 31/01/2024 Architecture: WINDOWS Score: 100 78 texlandbd.com 2->78 80 sayhellotomalware.shop 2->80 82 ip-api.com 2->82 92 Snort IDS alert for network traffic 2->92 94 Found malware configuration 2->94 96 Malicious sample detected (through community Yara rule) 2->96 98 18 other signatures 2->98 10 polyester_-Nylon_xls.exe 16 7 2->10         started        15 svchost.exe 16 3 2->15         started        17 svchost.exe 2->17         started        19 10 other processes 2->19 signatures3 process4 dnsIp5 88 sayhellotomalware.shop 104.21.50.164, 443, 49712, 49716 CLOUDFLARENETUS United States 10->88 68 C:\Users\user\AppData\Roaming\svchost.exe, PE32 10->68 dropped 126 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 10->126 128 Creates multiple autostart registry keys 10->128 130 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->130 132 Drops PE files with benign system names 10->132 21 cmd.exe 1 10->21         started        23 cmd.exe 1 10->23         started        134 Multi AV Scanner detection for dropped file 15->134 136 Machine Learning detection for dropped file 15->136 138 Writes to foreign memory regions 15->138 146 2 other signatures 15->146 26 CasPol.exe 15->26         started        28 powershell.exe 15->28         started        140 System process connects to network (likely due to code injection or exploit) 17->140 142 Adds a directory exclusion to Windows Defender 17->142 144 Injects a PE file into a foreign processes 17->144 30 CasPol.exe 17->30         started        32 powershell.exe 17->32         started        90 127.0.0.1 unknown unknown 19->90 70 C:\Windows\Temp\w3z2slg0.inf, Windows 19->70 dropped 72 C:\Windows\Temp\javwjzrb.inf, Windows 19->72 dropped 74 C:\Windows\Temp\cewqmr22.inf, Windows 19->74 dropped 76 C:\Windows\Temp\5mrsjtid.inf, Windows 19->76 dropped 34 CasPol.exe 19->34         started        36 consent.exe 19->36         started        38 8 other processes 19->38 file6 signatures7 process8 signatures9 40 svchost.exe 4 21->40         started        43 conhost.exe 21->43         started        45 timeout.exe 1 21->45         started        100 Uses schtasks.exe or at.exe to add and modify task schedules 23->100 47 conhost.exe 23->47         started        49 schtasks.exe 1 23->49         started        102 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->102 51 conhost.exe 28->51         started        104 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->104 106 Tries to steal Mail credentials (via file / registry access) 30->106 108 Tries to harvest and steal browser information (history, passwords, etc) 30->108 53 conhost.exe 32->53         started        110 Writes to foreign memory regions 36->110 55 conhost.exe 38->55         started        process10 signatures11 112 Writes to foreign memory regions 40->112 114 Adds a directory exclusion to Windows Defender 40->114 116 Injects a PE file into a foreign processes 40->116 57 CasPol.exe 40->57         started        62 powershell.exe 40->62         started        process12 dnsIp13 84 texlandbd.com 64.188.2.194, 49720, 49727, 49734 ASN-QUADRANET-GLOBALUS United States 57->84 86 ip-api.com 208.95.112.1, 49719, 49724, 49733 TUT-ASUS United States 57->86 66 C:\Users\user\AppData\...\Host Process.exe, PE32 57->66 dropped 118 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 57->118 120 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 57->120 122 Tries to steal Mail credentials (via file / registry access) 57->122 124 3 other signatures 57->124 64 conhost.exe 62->64         started        file14 signatures15 process16
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123/
Threat name:
ByteCode-MSIL.Ransomware.CryptoJoker
Create hunting rule
Status:
Malicious
First seen:
2024-01-30 19:22:40 UTC
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k2qxnng4nhrjxhyxbojylqolbmp26fcp2yvkco662ev2xkss4erq._file
Verdict:
malicious
Similar samples:
44d966ac7046e1860d9f18368b2c190299a7de106f212814543b3d373552ff73
AgentTesla
6939519f69f8ad0529ae05709bdac147a926cfe0dc462784eeb08bdf13d4592f
AgentTesla
6c3bb0b782e21e0a8dd0307b01a0cc3825f8d6f30819ae832b599509ea6ce992
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86674590d311280ebafc9d0ea35a17c5f7a7d6edc335baaaee38309c57c73a77
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90e562c3f7ee06b029a27c3e48a9a17e22ba7f075121eff25b36741978b68825
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a2ffc54dc009fe2a1ff5ec49f48081811ea7a9b41314bfbdc9a4874896300ab4
AgentTesla
+ 4 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240131-m31n6aafc6/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Looks up external IP address via web service
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Windows security modification
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
AgentTesla
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123
MD5 hash:
6289c26cc1b8d5b2257c4d78f2496585
SHA1 hash:
02ebe0bafca91fa475b2bd47c368c4ca330898b1
Link:
https://www.unpac.me/results/dc20f763-7b00-46a3-9134-0d7cb5558d48/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123

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

AgentTesla

Executable exe 56a176b4dc69e29b9f170b9385c1cb0b1faf144fd62aa13bded12babaa52e123

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/473753/

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