MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1ef855f52b63ceffa3fd30b6bc04bc3a2ffb64a6926d4bca436c0be6456cfd84. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1ef855f52b63ceffa3fd30b6bc04bc3a2ffb64a6926d4bca436c0be6456cfd84
SHA3-384 hash: 6d777a24e5a3b3943c9ff1260a497992c390f0310860e52633b27548f0a46e7a0354a31f98f417aaef89446b28de5421
SHA1 hash: 83b80632cc1f837ea3a717c42ef6e9e06502efa9
MD5 hash: 777934aee47e88678324f24b80cebcbd
humanhash: enemy-undress-item-montana
File name:817730.jpg
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'242'624 bytes
First seen:2020-08-19 11:06:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'746 x AgentTesla, 19'628 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:y2ruLxjlaqGq/FenOxUT3BCvRhDnSsZz2ZlfvD1CzSM5smgYp:eFjJJ/FO5T3BCvRhtSv4mM5sR
Threatray 10'628 similar samples on MalwareBazaar
TLSH 5E45B469678140D4DB3E0A34307559936332BDCE3B2AC63E698E36E8DE3318B361D5D9
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: slot0.garjanella.com
Sending IP: 104.168.203.39
From: "Jessy Alice" <info@garjanella.com>
Reply-To: info@garjanella.com
Subject: Purchase Order No:- GM/060108745679
Attachment: 817730.xls

AgentTesla payload URL:
http://13.231.151.34/w3/817730.jpg

Intelligence

File Origin
# of uploads :
1
# of downloads :
71
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/48425/
Detection(s):
SecuriteInfo.com.Variant.Barys.966.18545.12562.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a file
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/437598
Signature
.NET source code contains very large array initializations
Creates an autostart registry key pointing to binary in C:\Windows
Sigma detected: Add file from suspicious location to autostart registry
Tries to detect virtualization through RDTSC time measurements
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 271304 Sample: 817730.jpg Startdate: 20/08/2020 Architecture: WINDOWS Score: 68 31 Yara detected AgentTesla 2->31 33 Sigma detected: Add file from suspicious location to autostart registry 2->33 35 .NET source code contains very large array initializations 2->35 7 817730.exe 9 2->7         started        11 pcalua.exe 1 1 2->11         started        process3 file4 25 C:\Users\user\AppData\Roaming\hldoj.exe, PE32 7->25 dropped 27 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 7->27 dropped 29 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->29 dropped 39 Tries to detect virtualization through RDTSC time measurements 7->39 13 cmd.exe 1 7->13         started        15 hldoj.exe 3 7->15         started        signatures5 process6 signatures7 18 reg.exe 1 1 13->18         started        21 conhost.exe 13->21         started        41 Tries to detect virtualization through RDTSC time measurements 15->41 23 InstallUtil.exe 2 15->23         started        process8 signatures9 37 Creates an autostart registry key pointing to binary in C:\Windows 18->37
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1ef855f52b63ceffa3fd30b6bc04bc3a2ffb64a6926d4bca436c0be6456cfd84/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-18 12:15:42 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=d34fl5jlmphp7i75gc3lybf4hix7wzfgsjwuxssdnqf6mrlm7wca._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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1aec248bb2bd00454075223d34318765b2f98bafcb17604c72d9934379864f7b
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6c77b454db79850455c97fece27e8b924c7b41ffcd43a7cc0941b26d2fb6454b
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7f258d40028c77692ea89ce40261674a93143edf9d8c03ec8e8270344f945f1e
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8d022dab121f77e8bc72f928612aa7d06f08f9e0726f509f28a4874f7b4cfe50
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8d4a01b04439bd4ea04fca05aa078367da91aefea6dbe7b317c3fa16ca9d3354
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b1c87bb82c46e28ccb5188475def1c24b3239f0508372163cd75d2abc6eaf049
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d5231355835fc25fb6f9923639331084ff0ae602929793c263e01eda38d2fa1b
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f47cae95fdb8b43629d894b6d2b595b06e93e84f4f0bb2b0837703b6d2bde158
AgentTesla
+ 10'618 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200819-9nv9xb9xwx/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Barys
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/1ef855f52b63ceffa3fd30b6bc04bc3a2ffb64a6926d4bca436c0be6456cfd84

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_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

AgentTesla

Excel file xls 1d9d88a2124f50ceaf44fa33d530c10096caa7faee3c22edc5ec59d6b761fdca

AgentTesla

Executable exe 1ef855f52b63ceffa3fd30b6bc04bc3a2ffb64a6926d4bca436c0be6456cfd84

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/435673/
  
Dropped by
MD5 9b03d25bd4dd7828d5391046baa7ad6e
  
Dropped by
SHA256 1d9d88a2124f50ceaf44fa33d530c10096caa7faee3c22edc5ec59d6b761fdca
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/48425/

Comments