MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1
SHA3-384 hash: 11a2f2530b1e60518cb6bb1a7ef59b62f6e0c070e287c1c02221ab0bf2ecabc350190f5fdb8692d92439841ddbd75156
SHA1 hash: 6ff8cda70dd56e84db2eebf3c4dcd15f68134dbb
MD5 hash: 267a51ef40c1b64b61c30a761c00f81b
humanhash: lake-potato-connecticut-speaker
File name:SKM__C20192910887888001990.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:227'328 bytes
First seen:2022-06-09 12:37:17 UTC
Last seen:2022-06-09 12:47:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'750 x AgentTesla, 19'656 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 768:cWibf8H8auAzWMagHaMjfADB17W+DmI2UiHV8Hl2TVxF:vibf8H84WfgHaMzADVDt7i1sIJz
Threatray 19'858 similar samples on MalwareBazaar
TLSH T16C24CBE19A4D07A4E9DA4E70CAF19C350CA7FD7FA9B8A1D85CBA73120B721C21477907
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 3061cbc9cce8a8ca (1 x AgentTesla)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
287
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SKM__C20192910887888001990.pdf.exe
Verdict:
No threats detected
Analysis date:
2022-06-09 12:39:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d1eedb25-4cbe-448f-bbee-6f597fe147c5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/278300/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Forced system process termination
DNS request
Running batch commands
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62a1e9ad9bbf30d03f461aa5/reports/206443ef-5039-430d-8867-957892edefcc/overview
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/8cfea833-61d2-4317-bac4-6a7bb0a9ed50
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1009985
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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 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 / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 642488 Sample: SKM__C20192910887888001990.... Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 59 api.telegram.org 2->59 73 Malicious sample detected (through community Yara rule) 2->73 75 Yara detected AgentTesla 2->75 77 .NET source code contains potential unpacker 2->77 79 8 other signatures 2->79 8 SKM__C20192910887888001990.pdf.exe 16 7 2->8         started        12 Crhpazn.exe 14 3 2->12         started        15 Crhpazn.exe 2->15         started        signatures3 process4 dnsIp5 61 cdn.discordapp.com 162.159.129.233, 443, 49772, 49872 CLOUDFLARENETUS United States 8->61 51 C:\Users\user\AppData\Roaming\...\Crhpazn.exe, PE32 8->51 dropped 53 C:\Users\user\...\Crhpazn.exe:Zone.Identifier, ASCII 8->53 dropped 55 C:\...\SKM__C20192910887888001990.pdf.exe.log, ASCII 8->55 dropped 17 InstallUtil.exe 14 6 8->17         started        21 cmd.exe 1 8->21         started        23 powershell.exe 15 8->23         started        63 162.159.130.233, 443, 49867 CLOUDFLARENETUS United States 12->63 81 Machine Learning detection for dropped file 12->81 25 cmd.exe 12->25         started        27 powershell.exe 12->27         started        29 cmd.exe 15->29         started        31 powershell.exe 15->31         started        file6 signatures7 process8 dnsIp9 57 api.telegram.org 149.154.167.220, 443, 49869, 49871 TELEGRAMRU United Kingdom 17->57 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->65 67 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->67 69 Tries to steal Mail credentials (via file / registry access) 17->69 71 3 other signatures 17->71 33 conhost.exe 21->33         started        35 timeout.exe 1 21->35         started        37 conhost.exe 23->37         started        39 conhost.exe 25->39         started        41 timeout.exe 25->41         started        43 conhost.exe 27->43         started        45 conhost.exe 29->45         started        47 timeout.exe 29->47         started        49 conhost.exe 31->49         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 12:38:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lbthft65g46sdxggiy7d3m35enpthqwowv6b7gvjy273rbh3o6yq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
masslogger
Create hunting rule
Similar samples:
0b1c3985cfe6fd26489cc745f60cf63e6bea52b410c099e3434befa2c6568b19
AgentTesla
36981ea2e9ccb73809a6fe8956552f0e84a39e7684fc1982b6f52a2ce0ffd11d
AgentTesla
4a8e5d6a409a60db11f4fc5599d5ff0fb0b4fafcadddbb1281d74ee85ddd1068
AgentTesla
9b9b1017693154faab964c74d2e937806a9586b0a1ee32f2301c13249021df06
AgentTesla
e60dc072e6a4b30ed417b345bca94f6a70bbe1f31c6743425897f1a694d67856
AgentTesla
f73f85572a1f8a3c1f4b779e787c3cb1aeee64f76d55bcc0245a02ab27feeba3
AgentTesla
+ 19'848 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220609-pt2k7sgbbp/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5481869940:AAE-xVZLVv66P23Lv7Y5LDB9j4A7AeRGyvE/sendDocument
Unpacked files
SH256 hash:
586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1
MD5 hash:
267a51ef40c1b64b61c30a761c00f81b
SHA1 hash:
6ff8cda70dd56e84db2eebf3c4dcd15f68134dbb
Link:
https://www.unpac.me/results/0f219c3a-3b23-4dac-a05a-300eafce642d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

AgentTesla

Executable exe 586672cfdd373d21dcc6463e3db37d235f33c2ceb57c1f9aa9c6bfb884fb77b1

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278300/

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