MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0bf5908391baa73d4958fa8bd479d8eaf02bb840ac088cc894201da001f5160f. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0bf5908391baa73d4958fa8bd479d8eaf02bb840ac088cc894201da001f5160f
SHA3-384 hash: 753e97fdc163a038b622f265b842551e3cd63f745344842650b6ee94dd2276c892be8ed49c100914a4ea08cf080217f1
SHA1 hash: a40d96639094e86387931e8e6d9b1a820400d1f4
MD5 hash: 0194735ffc14b6a02be2e567b2f9fd7d
humanhash: helium-zulu-seventeen-two
File name:Bill Forwarding Letter.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:488'960 bytes
First seen:2020-07-05 08:31:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:1bgntDcbY9OEyP1zWaIMGO7OQcD8NPn3VkOe:axcbYC1zWnc7OQ48NP3Be
Threatray 10'625 similar samples on MalwareBazaar
TLSH D8A4F0320746FED6D36D4E74D28023401E696867BB61DD4CBCC822DD52BABC4DE69A33
Reporter sergedroz
Tags:AgentTesla


Avatar
sergedroz
From: Acount Dept <liza@crystalarc.net>
To: Sales <sale1@crystalarc.net>
Subject: ***BIll Forwarding for outstanding remittance.***
Message-ID: <bea9e4907ea1b2848149433e7a7f4935@crystalarc.net>
X-Sender: liza@crystalarc.net
User-Agent: Roundcube Webmail/1.3.11
Content-Type: multipart/mixed;
boundary="=_b770bd8f385afcfa312c3cc0143a670b"
X-PPP-Message-ID: <20200705074414.57507.82765@srv1.demspor.com>
X-PPP-Vhost: demspor.com

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching a service
Creating a file
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Enabling autorun with Startup directory
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/382456
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 243377 Sample: Bill Forwarding Letter.exe Startdate: 05/07/2020 Architecture: WINDOWS Score: 100 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 8 other signatures 2->72 7 Bill Forwarding Letter.exe 7 2->7         started        11 Window Updater.exe 3 2->11         started        13 Window Updater.exe 2 2->13         started        process3 file4 34 C:\Users\user\AppData\...\TWVKjirbeEC.exe, PE32 7->34 dropped 36 C:\Users\...\TWVKjirbeEC.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\...\tmp94B4.tmp, XML 7->38 dropped 40 C:\Users\...\Bill Forwarding Letter.exe.log, ASCII 7->40 dropped 74 Injects a PE file into a foreign processes 7->74 15 Bill Forwarding Letter.exe 17 19 7->15         started        20 schtasks.exe 1 7->20         started        22 Bill Forwarding Letter.exe 7->22         started        24 Window Updater.exe 14 16 11->24         started        26 Window Updater.exe 13->26         started        signatures5 process6 dnsIp7 42 smtp.yandex.ru 77.88.21.158, 49733, 49734, 49740 YANDEXRU Russian Federation 15->42 44 checkip.us-east-1.prod.check-ip.aws.a2z.com 18.214.132.216, 49735, 49739, 80 AMAZON-AESUS United States 15->44 52 3 other IPs or domains 15->52 30 C:\Users\user\AppData\...\Window Updater.exe, PE32 15->30 dropped 32 C:\...\Window Updater.exe:Zone.Identifier, ASCII 15->32 dropped 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->54 56 Installs a global keyboard hook 15->56 28 conhost.exe 20->28         started        46 smtp.yandex.com 24->46 48 checkip.check-ip.aws.a2z.com 24->48 50 checkip.amazonaws.com 24->50 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->58 60 Tries to steal Mail credentials (via file access) 24->60 62 Tries to harvest and steal ftp login credentials 24->62 64 Tries to harvest and steal browser information (history, passwords, etc) 24->64 file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0bf5908391baa73d4958fa8bd479d8eaf02bb840ac088cc894201da001f5160f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-05 08:33:04 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bp2zba4rxktt2sky7kf5i6oy5lycxocavqeizseueao2aapvcyhq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
04a4889f216c935b00b1b5616cb4b022562fb07a9cd8f45ecbe4d1b76c9499b7
AgentTesla
29731b137254f930b4d6b341d9bb6b552f056f43f89ad6eae2fb1be4ad76433e
AgentTesla
474f21c4bd0ed4ec53008cb87cb30351fd67ec6577b88aa3bd954628ede6d16d
AgentTesla
49e021e757dd9a8cabe9782e8d18de22ea5347f3cc180f02186ba66a77dcc055
AgentTesla
51a8fdacb7b988afa143a6084d169c4f95588451414a7acfe94ba75525864785
AgentTesla
64baf83c9b911fb05c284a8bb464c930d48ce9e50b8450d707bf78df0b169942
AgentTesla
6f7533350e8cca391d98510de991ab77598516a7207439efad6893ea1f40b450
AgentTesla
7fc2806d0821e5367c81773db3f59020ca283312b9975ef3ee19c139af0a4d69
AgentTesla
88ec084c0f53adb87c7b5fb01c8e5756ebfd3c98526d16e45d5d1b989263e29c
AgentTesla
8c254637c5c98fe6755a44e5ea6feba18d0a17c4ad53e8d791277390060c29e5
AgentTesla
+ 10'615 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware persistence
Link:
https://tria.ge/reports/200705-ntvv2jkvhn/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Suspicious use of SetThreadContext
Adds Run entry to start application
Looks up external IP address via web service
Looks up external IP address via web service
Adds Run entry to start application
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Please note that we are no longer able to provide a coverage score for Virus Total.

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

Executable exe 0bf5908391baa73d4958fa8bd479d8eaf02bb840ac088cc894201da001f5160f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/20589/

Comments