MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f691dc0c83967d9714df9af23381b7856a577db3350c71914ea7942b68d2867e. 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: f691dc0c83967d9714df9af23381b7856a577db3350c71914ea7942b68d2867e
SHA3-384 hash: 1ccfdcd6174b321ba3f8898160370c2b1b254652cbe22db79f2cd3a3d6912d9d0733efd51f908387ba257a783cbf8fca
SHA1 hash: 173993f932a8058b5fb28266281aa29989f1d58d
MD5 hash: edeedf6be986d33314866760a5796b85
humanhash: fix-cat-colorado-berlin
File name:noah 123.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:496'640 bytes
First seen:2020-08-04 11:05:47 UTC
Last seen:2020-08-12 07:57:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:WHaVeyNz1coWimKztZjXQK+p+8xaRErUqTJ:WHyZ1coWpKz/TQBp+82ETJ
Threatray 10'621 similar samples on MalwareBazaar
TLSH 35B4015BFA85526ECD5D4E74C49390ACD2631C378801EB46BCE8736F0ABD3C1B91986B
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: selvamgroups.com
Sending IP: 95.211.253.212
From: sst@selvamgroups.com
Subject: RE:TOP URGENT_Shipping Instruction
Attachment: shiping doc.r00 (contains "noah 123.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin
# of uploads :
3
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38537/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.276.2891.32132.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file
Sending a UDP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Enabling autorun
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/409305
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256952 Sample: noah 123.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 84 40 Yara detected AgentTesla 2->40 42 .NET source code contains potential unpacker 2->42 44 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 2->44 46 3 other signatures 2->46 7 noah 123.exe 7 2->7         started        process3 file4 34 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 7->34 dropped 36 C:\Users\user\AppData\...\noah 123.exe.log, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 7->38 dropped 50 Injects a PE file into a foreign processes 7->50 11 noah 123.exe 2 7->11         started        14 cmd.exe 1 7->14         started        16 cmd.exe 3 7->16         started        19 cmd.exe 1 7->19         started        signatures5 process6 file7 52 Tries to steal Mail credentials (via file access) 11->52 54 Tries to harvest and steal browser information (history, passwords, etc) 11->54 21 reg.exe 1 1 14->21         started        24 conhost.exe 14->24         started        30 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 16->30 dropped 26 conhost.exe 16->26         started        32 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 19->32 dropped 28 conhost.exe 19->28         started        signatures8 process9 signatures10 48 Creates an undocumented autostart registry key 21->48
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f691dc0c83967d9714df9af23381b7856a577db3350c71914ea7942b68d2867e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 11:07:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=62i5ydedsz6zofg7tlzdhanxqvvfo7ntgughdekou6kcw2gsqz7a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 10'611 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/200804-ybfnac3p72/
Behaviour
Suspicious use of WriteProcessMemory
NTFS ADS
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Loads dropped DLL
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f691dc0c83967d9714df9af23381b7856a577db3350c71914ea7942b68d2867e

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

r00 d5e90689dfb16df52ef0da19b46f5e2dfd9f0728fb9f28054ab6b85f0ee625e0

AgentTesla

Executable exe f691dc0c83967d9714df9af23381b7856a577db3350c71914ea7942b68d2867e

(this sample)

  
Dropped by
MD5 b042269200122b563ee5efd4ff289336
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38537/
  
Dropped by
SHA256 d5e90689dfb16df52ef0da19b46f5e2dfd9f0728fb9f28054ab6b85f0ee625e0

Comments