MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3
SHA3-384 hash: d96ea523ef244bfbaf9f9621b393e3f52111b08c43c6b44c297b166a860f02e706f208475373cfc143e2b64ee77ca9a4
SHA1 hash: f6a0133419d29493e3bc430b1a3fe25006ee64f4
MD5 hash: 8aa107ebc022638c36e6d7ae00c0fc0b
humanhash: echo-pip-river-monkey
File name:nw@bin.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:2'149'376 bytes
First seen:2021-02-12 11:27:25 UTC
Last seen:2021-02-12 13:03:58 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 6144:+jA1tq0BVzs7BVc5k+E3gQfNS6o7iIcbrcjsz3wPUvd3p1fBZv1GBzCJxew+Wydq:O
Threatray 2'601 similar samples on MalwareBazaar
TLSH F6A50D407CEB649C88B85D0F3D4E201D96AD73306A1B5D6EB5BA83877A9B310CBF5D18
Reporter JAMESWT_WT
Tags:AgentTesla

Intelligence

File Origin
# of uploads :
3
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
nw@bin.exe
Verdict:
Malicious activity
Analysis date:
2021-02-12 09:52:04 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c7566b4a-aaf6-4da9-b0df-7e4608fca375

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/116920/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.9765.20014.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
Creating a window
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
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
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/606718
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Contains functionality to hide a thread from the debugger
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Hides threads from debuggers
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped 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)
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 352391 Sample: nw@bin.exe Startdate: 12/02/2021 Architecture: WINDOWS Score: 100 66 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 Multi AV Scanner detection for submitted file 2->70 72 7 other signatures 2->72 7 nw@bin.exe 3 5 2->7         started        11 nw@bin.exe 2->11         started        13 nw@bin.exe 3 2->13         started        15 4 other processes 2->15 process3 file4 56 C:\Users\user\AppData\Roaming\...\nw@bin.exe, PE32 7->56 dropped 58 C:\Users\user\...\nw@bin.exe:Zone.Identifier, ASCII 7->58 dropped 82 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->82 84 Creates an undocumented autostart registry key 7->84 86 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->86 92 4 other signatures 7->92 17 cmd.exe 1 7->17         started        19 nw@bin.exe 2 7->19         started        88 Hides threads from debuggers 11->88 90 Injects a PE file into a foreign processes 11->90 21 nw@bin.exe 11->21         started        25 WerFault.exe 11->25         started        28 cmd.exe 11->28         started        30 WerFault.exe 13->30         started        32 cmd.exe 1 13->32         started        34 nw@bin.exe 2 13->34         started        36 4 other processes 15->36 signatures5 process6 dnsIp7 38 conhost.exe 17->38         started        40 timeout.exe 1 17->40         started        64 muktaaspa.com 162.215.253.110, 49715, 49716, 587 PUBLIC-DOMAIN-REGISTRYUS United States 21->64 74 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->74 76 Tries to steal Mail credentials (via file access) 21->76 78 Tries to harvest and steal ftp login credentials 21->78 80 2 other signatures 21->80 60 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 25->60 dropped 42 conhost.exe 28->42         started        44 timeout.exe 28->44         started        62 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 30->62 dropped 46 conhost.exe 32->46         started        48 timeout.exe 1 32->48         started        50 conhost.exe 36->50         started        52 timeout.exe 36->52         started        54 2 other processes 36->54 file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-12 09:34:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=57bt4snb6k5yulfpecrwbhcec4gdooojbqpc6tzdnfq6cmtzuozq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
19ac9ca7fc7e710f25432fdbdef8b5dd5d1ebe1ad6fa5607e89c09815d40e062
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636e96438bf8b2c34f6d80f0030c5b3b93029d13bdbb892a75e3d26942c80b46
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7047ffe9f593c5caf62a74b731651ec92da3b5b29df4d042b935d10b29f49e85
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a5291cb72effd442ca566ea6d4035f508e97184f506a2eb20d035347532708bc
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abe6a77fefdede7de287d151689f87a3f59eb496d94351f4085b3bc1a6b755c2
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db08bc70f92e080c87f0aea5fa596f27a559dd1639c6dde81e302a4166f3b3fb
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f2107af67057a683b0f47e63cc4f348747945cba5255da566d8bf65a1a26b47d
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f45d2efc6e407a17cbe129622fddf8a26e108d39f5fd05a164525d95ad8a3218
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f90cf6686fcfe69bb074cf65a5b7e19c8e97b1351377faa7a2477577d4171de8
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fc40429e1461e2cc002fdb2b131ca7eadd4f3a688a24130197667c3493213986
AgentTesla
+ 2'591 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210212-x5dvzrlbfs/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Modifies WinLogon for persistence
Unpacked files
SH256 hash:
68d700a9d5513ede6612f787e53411511562473354de16404f1df26639a5e140
MD5 hash:
91e3975b7b086fec1111083ddb8fcca2
SHA1 hash:
3a606d3a45ad2b84861c2a1480c06146b5ef9fb0
Link:
https://www.unpac.me/results/fc610d2f-4cf4-4c7d-94b1-3461af25fa16/
SH256 hash:
30f11797fac48d8d742f7d370337d9101f4e035d305db6c4639a066f3d8717e8
MD5 hash:
79a409b5bea86e103bb96605c25d7621
SHA1 hash:
b7ce5192ee44d2d237f1a8858113ec3a794af8b7
Link:
https://www.unpac.me/results/fc610d2f-4cf4-4c7d-94b1-3461af25fa16/
SH256 hash:
efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3
MD5 hash:
8aa107ebc022638c36e6d7ae00c0fc0b
SHA1 hash:
f6a0133419d29493e3bc430b1a3fe25006ee64f4
Link:
https://www.unpac.me/results/fc610d2f-4cf4-4c7d-94b1-3461af25fa16/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3

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
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:win_agent_tesla_v1
Create hunting rule
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 efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1002283/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1002297/
Cape
Cape
https://www.capesandbox.com/analysis/116920/

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