MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df
SHA3-384 hash: b4c5f00d1918032542f2f2f2b50e9a274285da29d36f4f48e7ca12e75c76a0665fd94bb11dd0ca47fd03c194d0647188
SHA1 hash: cc2526e7093142d75be5cd12f28079ffe8bd6a48
MD5 hash: 0d302179d4a7f255fa8d84c7572cf088
humanhash: three-montana-zebra-blue
File name:Purchas_Order.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:497'784 bytes
First seen:2020-10-26 06:30:24 UTC
Last seen:2020-10-26 06:31:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:zV/4rjvGiO9C6tgwfMsS4ikBTbpFpw91nVu5OalTC+m0VYP6wv3jTnS6:EO9C6ZS3kB/oS6
TLSH B2B4AF717D52586EC96A0F3500698DC0F9B61AC73FA08E0D75BB630C0E21ADBAB5F257
Reporter JoulK
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
73
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/78234/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Running batch commands
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/511035
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Creates an autostart registry key pointing to binary in C:\Windows
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Add file from suspicious location to autostart registry
Tries to detect virtualization through RDTSC time measurements
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 304641 Sample: Purchas_Order.exe Startdate: 26/10/2020 Architecture: WINDOWS Score: 100 31 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 Yara detected AgentTesla 2->35 37 4 other signatures 2->37 7 Purchas_Order.exe 8 2->7         started        11 pcalua.exe 1 2->11         started        13 pcalua.exe 1 1 2->13         started        process3 file4 27 C:\Users\user\AppData\Roaming\...\Skvpe.exe, PE32 7->27 dropped 29 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 7->29 dropped 45 Tries to detect virtualization through RDTSC time measurements 7->45 15 cmd.exe 1 7->15         started        17 Skvpe.exe 2 7->17         started        19 Skvpe.exe 3 11->19         started        signatures5 process6 signatures7 22 reg.exe 1 1 15->22         started        25 conhost.exe 15->25         started        39 Multi AV Scanner detection for dropped file 19->39 41 Tries to detect virtualization through RDTSC time measurements 19->41 process8 signatures9 43 Creates an autostart registry key pointing to binary in C:\Windows 22->43
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-25 20:08:55 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=va2jpr7dgnjzara6epyzgyhlaku7tydbhl7fnpihipqvalq5ahpq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/201026-elnw32cpxx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
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/a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df

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: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.

Malspam

AgentTesla

rar 2339009437fd67035ce3675d46bafc5122e00b7a4770607e0aa20919f546530c

AgentTesla

Executable exe a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df

(this sample)

  
Dropped by
SHA256 2339009437fd67035ce3675d46bafc5122e00b7a4770607e0aa20919f546530c
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/78234/

Comments