MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7
SHA3-384 hash: ab757d485c9942225b2766eef5372292c7558f04955ee644d501954c44874dd4c9e0f87ac5cc5ebd9a720129006faeaf
SHA1 hash: 6fcf2a332abc1a39f2b5388591e08011e04f0940
MD5 hash: 9fbb9e75159615441bfd5a9e134260b8
humanhash: gee-bulldog-queen-neptune
File name:Order confirmation 5679021.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:224'256 bytes
First seen:2022-03-28 06:22:33 UTC
Last seen:2022-03-28 13:14:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:LhwBaAkzL7r9r/EDppppppppppppppppppppppppppppp0G:dP7r9r/+pppppppppppppppppppppppH
Threatray 16'307 similar samples on MalwareBazaar
TLSH T1D9242CC5E98455A0DD19AB716A36CD3542237EFDA874A42C28DE3E273FFB2D31026463
File icon (PE):PE icon
dhash icon d4c4c4d8ccd4f0cc (241 x AgentTesla, 65 x Loki, 41 x Formbook)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
6
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/258414/
Detection(s):
SecuriteInfo.com.W32.Faker.J.genEldorado.25730.19521.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6241544e1f204239483fddc0/reports/d65941c5-ccee-473a-bb61-78526df866aa/overview
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/fc26a2aa-813a-41bc-bea9-9361271c2cec
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965529
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: MSBuild connects to smtp port
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 598010 Sample: Order confirmation 5679021.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 57 webmail.escueladeseguridadmaritima.com 2->57 59 escueladeseguridadmaritima.com 2->59 73 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->73 75 Multi AV Scanner detection for domain / URL 2->75 77 Found malware configuration 2->77 79 10 other signatures 2->79 8 Order confirmation 5679021.exe 16 7 2->8         started        13 Cjdwgkun.exe 14 3 2->13         started        15 Cjdwgkun.exe 2->15         started        signatures3 process4 dnsIp5 61 amtechprinting.com 64.188.2.244, 443, 49765, 49783 ASN-QUADRANET-GLOBALUS United States 8->61 63 192.168.2.1 unknown unknown 8->63 49 C:\Users\user\AppData\...\Cjdwgkun.exe, PE32 8->49 dropped 51 C:\...\Order confirmation 5679021.exe.log, ASCII 8->51 dropped 81 Writes to foreign memory regions 8->81 83 Injects a PE file into a foreign processes 8->83 17 MSBuild.exe 2 8->17         started        21 cmd.exe 1 8->21         started        23 cmd.exe 1 8->23         started        85 Multi AV Scanner detection for dropped file 13->85 25 cmd.exe 1 13->25         started        27 cmd.exe 13->27         started        29 cmd.exe 15->29         started        file6 signatures7 process8 dnsIp9 53 escueladeseguridadmaritima.com 160.153.132.203, 49779, 49785, 587 GODADDY-AMSDE United States 17->53 55 webmail.escueladeseguridadmaritima.com 17->55 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->65 67 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->67 69 Tries to steal Mail credentials (via file / registry access) 17->69 71 3 other signatures 17->71 31 conhost.exe 21->31         started        33 timeout.exe 1 21->33         started        35 conhost.exe 23->35         started        37 timeout.exe 1 23->37         started        39 conhost.exe 25->39         started        41 timeout.exe 1 25->41         started        47 2 other processes 27->47 43 conhost.exe 29->43         started        45 timeout.exe 29->45         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 06:23:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yoni3l5xbnfn7mq4uvl4epz3qh6jmxbajo3q2uk7reb7gic3ok3q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
masslogger
Create hunting rule
Similar samples:
20da9061d97a613081f164a4ace352121755f24a0e0c717d2791e03579daff53
AgentTesla
52070720ff5c4b6095e4a7aa082f7647fbc576f3e4ff538b941131fad8842a1f
AgentTesla
76bfbb524e921f7639ecbb2c7d40e072d5b45aa4b8521a45d82d85f96743afeb
AgentTesla
98aeacaea9d4c101bcc2ae23384f20e93620b3df41e4eca1676aa2bba92c4cbf
AgentTesla
a0c3371953d59c8e30df713a05e21c633ab4496bcde543b727eda24cc8456116
AgentTesla
faf88b54daf7749226c2bf5fc4d0f122d728f689093c926f26c1d4b2c275f137
AgentTesla
+ 16'297 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220328-g5gfeagfb8/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7
MD5 hash:
9fbb9e75159615441bfd5a9e134260b8
SHA1 hash:
6fcf2a332abc1a39f2b5388591e08011e04f0940
Detections:
win_cannon_auto
Create hunting rule
Link:
https://www.unpac.me/results/0da334a5-08e9-4891-9ae2-c2e3be8424dd/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c39a8dafb70b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7

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:dridex_halo_generated
Create hunting rule
Author:Halogen Generated Rule, Corsin Camichel
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_cannon_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Executable exe c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/258414/

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