MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8857292907964728bf2613f9a49f29571ac621e1903f74bff08841efa93ab01. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8857292907964728bf2613f9a49f29571ac621e1903f74bff08841efa93ab01
SHA3-384 hash: a18c133f17e095a44f941f84637f1ceff7198eaf6821c25c79c8763835b751069e6cb374add3045c3446f9507f1278e1
SHA1 hash: 6643278ffad1a01aeda9128ec13658626bbdd3f0
MD5 hash: a4d8438130cc70821ecd8a71c1393521
humanhash: carpet-moon-april-pennsylvania
File name:transferencia003.PDF.bat
Download: download sample
Signature AgentTesla
Create hunting rule
File size:443'392 bytes
First seen:2020-08-08 08:23:04 UTC
Last seen:2020-08-08 08:54:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:qisjMagVDeZf0N6WYc2z7Hm0jPMezgrpiA:qiUgVDeZsg02OqMPQA
Threatray 63 similar samples on MalwareBazaar
TLSH 2F9402AC0BDC9FB2CADC06B8659D3404273967A1E6D7F7145A9634FA3CE639042C13B6
Reporter abuse_ch
Tags:AgentTesla bat ESP geo


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.viteltek.com
Sending IP: 45.79.51.124
From: altainterban@serviciobancomer.com
Subject: Registro de Cuenta Interbancaria en Dólares --
Attachment: transferencia003.img (contains "transferencia003.PDF.bat")

Intelligence

File Origin
# of uploads :
2
# of downloads :
107
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/42122/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader34.18893.24655.4094.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/415797
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
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: Suspicious Double Extension
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 access)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 260148 Sample: transferencia003.PDF.bat Startdate: 08/08/2020 Architecture: WINDOWS Score: 100 24 Found malware configuration 2->24 26 Yara detected AgentTesla 2->26 28 Yara detected AntiVM_3 2->28 30 5 other signatures 2->30 6 transferencia003.PDF.exe 3 2->6         started        process3 file4 18 C:\Users\...\transferencia003.PDF.exe.log, ASCII 6->18 dropped 32 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->32 34 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->34 36 Injects a PE file into a foreign processes 6->36 38 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 6->38 10 transferencia003.PDF.exe 4 6->10         started        14 transferencia003.PDF.exe 6->14         started        16 transferencia003.PDF.exe 6->16         started        signatures5 process6 dnsIp7 20 mail.emifarma.com 162.241.60.204, 49752, 587 UNIFIEDLAYER-AS-1US United States 10->20 22 192.168.2.1 unknown unknown 10->22 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->40 42 Tries to steal Mail credentials (via file access) 10->42 44 Tries to harvest and steal ftp login credentials 10->44 46 Tries to harvest and steal browser information (history, passwords, etc) 10->46 signatures8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b8857292907964728bf2613f9a49f29571ac621e1903f74bff08841efa93ab01/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-08 08:25:05 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xccxfeuqpfshfc7sme7zuspssvy2yyq6deb7os77bccb56utvmaq._file
Verdict:
unknown
Similar samples:
180ce11458278937df159f820915e1c2d50fa5ef54542253aa3e076ac91fc5c3
AgentTesla
354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817
AgentTesla
3ba509359db69542f368af1d41dd8fa1c116e3e31ded1879872bb34a41f9cbbb
AgentTesla
64c51fc10708dbd2fb676b2a95bd1330d4fe8099384713d0bea70c0c17928fec
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87257a8478febca687e205af4d5fe832c8de27f257c8201879e7556b61da9f92
AgentTesla
8f3ad5ccb61c668f7fbbc009cf0ea27396dd4fe80c0adb7b6daa86b136308252
AgentTesla
c5a9b35e88c8854b9ded651caf716d6ecf5e30454859c4a664d2120145bccc67
AgentTesla
d6fad316d9603cc8cf82b520043853ef4597124b2ffb86abf8b52b80e9f18a53
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e673332bede0d99119dddfdf730d250a4a4eb4b84810fdf8bd8f27e6955c6412
AgentTesla
f5ca4644c1340cd373374d09ecd052c57c8c8abef50c4ae280876497d3f40a64
AgentTesla
+ 53 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200808-9dd1a44pxe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8857292907964728bf2613f9a49f29571ac621e1903f74bff08841efa93ab01

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

img 389747492d5a05a170f59232b923d4b3e38052a9f9d9e4c01b9e0c433550039b

AgentTesla

Executable exe b8857292907964728bf2613f9a49f29571ac621e1903f74bff08841efa93ab01

(this sample)

  
Dropped by
MD5 c2a1ddf1c5c94f6ba8f50d858b77a308
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42122/
  
Dropped by
SHA256 389747492d5a05a170f59232b923d4b3e38052a9f9d9e4c01b9e0c433550039b

Comments