MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa6c016af805ab3cff129cdc2e57ea74e70502e0c7519c7f6b4c29ab2f6981a3. 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 7 File information Comments 1

SHA256 hash: fa6c016af805ab3cff129cdc2e57ea74e70502e0c7519c7f6b4c29ab2f6981a3
SHA3-384 hash: 885f90593161a3360feb5a37b40cb619e68943da596236d287dd0e90a95c4233d369512e6668ae5c98696441e7a1c9cd
SHA1 hash: 5c17d448c342005b848ce18bbae99d7827176503
MD5 hash: b61fa321f22d56553ab37916d973cf4e
humanhash: nebraska-florida-lake-september
File name:b61fa321_by_Libranalysis
Download: download sample
Signature AgentTesla
File size:3'502'592 bytes
First seen:2021-05-04 02:01:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:HFBUiIcxW5XW2hJV3rvAXUL/HWtV+WXWVbsWDrWce+GeERDvNnpWA2x/6BY/neWx:u
Threatray 6 similar samples on MalwareBazaar
TLSH A7F5DA7139FF72A129FEB89C49156AA58B3B77D1C478CB0D1340630EDB120466DADB2E
Reporter Libranalysis
Tags:AgentTesla


Avatar
Libranalysis
Uploaded as part of the sample sharing project

Intelligence


File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b0db352ad95248e96a5baa14b26e8551.doc
Verdict:
Malicious activity
Analysis date:
2021-05-04 07:21:26 UTC
Tags:
exploit CVE-2017-11882 loader trojan rat agenttesla

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a process with a hidden window
Running batch commands
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
Creating a window
Using the Windows Management Instrumentation requests
Blocking the User Account Control
Adding exclusions to Windows Defender
Changing the hosts file
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.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to hide a thread from the debugger
Found malware configuration
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for sample
Modifies the hosts 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)
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 403357 Sample: b61fa321_by_Libranalysis Startdate: 04/05/2021 Architecture: WINDOWS Score: 100 29 asus-tv.tk 2->29 31 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->31 33 Found malware configuration 2->33 35 Multi AV Scanner detection for submitted file 2->35 37 4 other signatures 2->37 8 b61fa321_by_Libranalysis.exe 2 3 2->8         started        signatures3 process4 signatures5 39 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->39 41 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->41 43 Adds a directory exclusion to Windows Defender 8->43 45 3 other signatures 8->45 11 b61fa321_by_Libranalysis.exe 2 8->11         started        15 cmd.exe 1 8->15         started        17 powershell.exe 26 8->17         started        19 WerFault.exe 23 9 8->19         started        process6 file7 27 C:\Windows\System32\drivers\etc\hosts, ASCII 11->27 dropped 47 Modifies the hosts file 11->47 21 conhost.exe 15->21         started        23 timeout.exe 1 15->23         started        25 conhost.exe 17->25         started        signatures8 process9
Threat name:
ByteCode-MSIL.Trojan.Generic
Status:
Suspicious
First seen:
2021-05-04 02:02:18 UTC
AV detection:
18 of 47 (38.30%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla evasion keylogger spyware stealer trojan
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Windows security modification
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
02683e1ce549c9394e59efc9ea075d3bba605374a5a710474a00db5c2c7a6cc4
MD5 hash:
a7ca280e9c288df244a5b4259c5039b3
SHA1 hash:
1193756381a19d4b519d723a93798d44045c70e2
SH256 hash:
48ff9881cd1a12bf63224806ca7d66e715ce87655f6aa97c35a84604242726ad
MD5 hash:
cb7b5a747c60a1fc3adeff5e474ef00d
SHA1 hash:
03d068cd58e983395f1640d3b0b891ab23123229
SH256 hash:
fa6c016af805ab3cff129cdc2e57ea74e70502e0c7519c7f6b4c29ab2f6981a3
MD5 hash:
b61fa321f22d56553ab37916d973cf4e
SHA1 hash:
5c17d448c342005b848ce18bbae99d7827176503
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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Web download

AgentTesla

Executable exe fa6c016af805ab3cff129cdc2e57ea74e70502e0c7519c7f6b4c29ab2f6981a3

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-04 03:21:26 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009] Anti-Behavioral Analysis::Virtual Machine Detection