MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71f75231ec231d35684b7b43f0b599fb8eae9978ae979c9ebb9f484ce405e7f1. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71f75231ec231d35684b7b43f0b599fb8eae9978ae979c9ebb9f484ce405e7f1
SHA3-384 hash: abf7f57eba03fe2a227869d45526fb50b267f9875f999dc2baa981403fa39e3d80958a789e7fba3aefa9d992758d0100
SHA1 hash: 57177a76809a2a26c39ce47ba083c98766b9755a
MD5 hash: ce1d6eef83329cefd21ddf7a0457aa81
humanhash: alanine-eighteen-wyoming-sweet
File name:Purchase order.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'144'800 bytes
First seen:2020-07-30 07:29:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 24576:6NA3R5drXdtmnaTrql9otbBOH3tFdPl+zxbh2soAY5aRcKX+47Y:z5bmaT09otcXtFZkzxd2xA2aa47Y
Threatray 9'330 similar samples on MalwareBazaar
TLSH C5351202F3C684B1D63219356A25FB20A87CBD611F25DB1FB7C44DAE9A705C1B235BA3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
76
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/35358/
Detection(s):
Win.Dropper.NetWire-9102409-0
Create hunting rule

SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Enabling the 'hidden' option for files in the %temp% directory
Creating a process from a recently created file
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Launching the process to change network settings
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/403285
Signature
Allocates memory in foreign processes
Drops PE files with a suspicious file extension
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: Capture Wi-Fi password
Sleep loop found (likely to delay execution)
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 harvest and steal WLAN passwords
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM autoit script
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 253870 Sample: Purchase order.exe Startdate: 30/07/2020 Architecture: WINDOWS Score: 100 70 Found malware configuration 2->70 72 Sigma detected: Capture Wi-Fi password 2->72 74 Yara detected AgentTesla 2->74 76 5 other signatures 2->76 13 Purchase order.exe 29 2->13         started        16 oqsxhlhpdx.pif 2->16         started        19 oqsxhlhpdx.pif 1 1 2->19         started        21 oqsxhlhpdx.pif 2->21         started        process3 file4 54 C:\Users\user\AppData\...\oqsxhlhpdx.pif, PE32 13->54 dropped 23 oqsxhlhpdx.pif 4 3 13->23         started        68 Sleep loop found (likely to delay execution) 16->68 26 RegSvcs.exe 16->26         started        56 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 19->56 dropped 29 RegSvcs.exe 2 19->29         started        31 RegSvcs.exe 21->31         started        signatures5 process6 dnsIp7 58 192.168.2.1 unknown unknown 23->58 33 wscript.exe 1 23->33         started        60 smtp.yandex.ru 26->60 62 smtp.yandex.com 26->62 78 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->78 80 Tries to steal Mail credentials (via file access) 26->80 82 Tries to harvest and steal ftp login credentials 26->82 86 2 other signatures 26->86 35 netsh.exe 26->35         started        84 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 29->84 signatures8 process9 process10 37 oqsxhlhpdx.pif 33->37         started        39 conhost.exe 35->39         started        process11 41 wscript.exe 1 37->41         started        process12 43 oqsxhlhpdx.pif 41->43         started        signatures13 88 Writes to foreign memory regions 43->88 90 Allocates memory in foreign processes 43->90 92 Sleep loop found (likely to delay execution) 43->92 94 Injects a PE file into a foreign processes 43->94 46 RegSvcs.exe 43->46         started        process14 dnsIp15 64 smtp.yandex.ru 77.88.21.158, 49706, 49707, 587 YANDEXRU Russian Federation 46->64 66 smtp.yandex.com 46->66 96 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 46->96 98 Tries to steal Mail credentials (via file access) 46->98 100 Tries to harvest and steal WLAN passwords 46->100 102 Installs a global keyboard hook 46->102 50 netsh.exe 46->50         started        signatures16 process17 process18 52 conhost.exe 50->52         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71f75231ec231d35684b7b43f0b599fb8eae9978ae979c9ebb9f484ce405e7f1/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-07-26 03:19:00 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=oh3vempmemotk2clpnb7bnmz7ohk5glyv2lzzhv3t5eezzaf47yq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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8d5d64d7fe461ea3d2c4ef989b5919dd74f0d7a5803fcaeb23bda4d815f22d83
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b06c86dae636716a828d1dcc1e56ff8d6152fedba019b8da0ba0faa45aaebbd6
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b8ee3458736fa73672b43a4c55e136bafc48b215dcb89dac28b5865ab59fc99c
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cbc2cd6401ee2dffa529cfac703476c24833eda31b951c8ab178b878f0247b38
AgentTesla
f6a3616478400ad9ef7ddde32888050dd08b0fbdcf6ad8372aa3bd414e5b4416
AgentTesla
+ 9'320 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
persistence keylogger trojan stealer spyware family:agenttesla
Link:
https://tria.ge/reports/200730-5l8fq5bkda/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Modifies service
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
netwire
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/71f75231ec231d35684b7b43f0b599fb8eae9978ae979c9ebb9f484ce405e7f1

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

Executable exe 71f75231ec231d35684b7b43f0b599fb8eae9978ae979c9ebb9f484ce405e7f1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/35358/

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