MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 657a164783b53dc028ca6024f4df09f9e4a9b289e0a3216d2c686ec091a224c0. 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: 657a164783b53dc028ca6024f4df09f9e4a9b289e0a3216d2c686ec091a224c0
SHA3-384 hash: 0fd9477e06f33a3d68c3ab8eee5da4f9735960813b9ec96398c5e4a0707f924d0aec3644a0c834e36c15748ef2f56416
SHA1 hash: 0a33973976829606b0fc9ed3b17a3f86fad8dd45
MD5 hash: 6ba9825198998e838f2d4d34fda98281
humanhash: maryland-louisiana-lima-eleven
File name:kx1.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:724'992 bytes
First seen:2021-02-10 14:16:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:Ixdfvi4OfJ5jo/K2LUxv7VNdr1GI1xc8aKWuJnVU5GtHi4FJ32sKE4C:I2J57xpLpLc8XnVKY332sMC
Threatray 19 similar samples on MalwareBazaar
TLSH C3F4DF2CF7A8BE89D6590E73C413824483F586277333F7AB59E47CF02811A5AD95F192
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
kx1.exe
Verdict:
Malicious activity
Analysis date:
2021-02-10 14:20:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1a898132-3e34-4501-9b98-6a8e8d27d7eb

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/116574/
Detection(s):
Win.Dropper.Bifrost-9830123-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a custom TCP request
Creating a window
Running batch commands
Launching a process
Sending a UDP request
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
Verdict:
MALICIOUS
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.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/604628
Signature
.NET source code contains very large array initializations
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 351350 Sample: kx1.exe Startdate: 10/02/2021 Architecture: WINDOWS Score: 92 28 Multi AV Scanner detection for dropped file 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected AgentTesla 2->32 34 4 other signatures 2->34 7 kx1.exe 15 6 2->7         started        process3 file4 22 C:\Users\user\AppData\Roaming\...\kx.exe, PE32 7->22 dropped 24 C:\Users\user\...\kx.exe:Zone.Identifier, ASCII 7->24 dropped 26 C:\Users\user\AppData\Local\...\kx1.exe.log, ASCII 7->26 dropped 36 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->36 11 kx.exe 14 3 7->11         started        14 cmd.exe 1 7->14         started        signatures5 process6 signatures7 38 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->38 40 Injects a PE file into a foreign processes 11->40 16 kx.exe 2 11->16         started        18 conhost.exe 14->18         started        20 reg.exe 1 1 14->20         started        process8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/657a164783b53dc028ca6024f4df09f9e4a9b289e0a3216d2c686ec091a224c0/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-10 01:50:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mv5bmr4dwu64akgkmaspjxyj7hsktmuj4crsc3jmnbxmbencetaa._file
Verdict:
unknown
Similar samples:
0a32bf464b79ecb571397121f359c05b1cbbc7e1af2e3bcc10d65a2ff9808bc1
AgentTesla
261881b9a0b2810582a67284f52bb08f2da1567353648ca01032b581345d5854
AgentTesla
5bbde3f5d6db7f3be36f4f0f08c86fd412a1c6085c5be438be7f1e9e181e3683
AgentTesla
5cd44014177c68a2e4bf08bdf8ec2e779c13a340cc830ad2c3a7a71676780b0d
AgentTesla
705d1bef79134efe898b490d096aecb9c0acbdc889fae25e8f2d88db9429001c
AgentTesla
7107f4965f48165708f028a5541e4b945fb9fac1546c8a069752c2ad43065079
AgentTesla
7801d40fed7d2a6ec57aae8e1e5bf403e8fa0945c0bf2d5bb70722627eb8bfae
AgentTesla
acbe0d54176227f28b98caaf141c82cc51e43a7b5797c1d3c76b01123e3f8f48
AgentTesla
df9b8b0093bdcff2dc73e2da55ea3c94cc90febcf05c4bb4edde266b3f376a55
AgentTesla
edfb07ec10ae322bbba31f0239c009ccd95f7a1f1f07e6bf7fb1499dda801b76
AgentTesla
+ 9 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence ransomware
Link:
https://tria.ge/reports/210210-qs1x1lb4lx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
657a164783b53dc028ca6024f4df09f9e4a9b289e0a3216d2c686ec091a224c0
MD5 hash:
6ba9825198998e838f2d4d34fda98281
SHA1 hash:
0a33973976829606b0fc9ed3b17a3f86fad8dd45
Link:
https://www.unpac.me/results/1642e002-9466-44af-8d88-2be7b2b1fb16/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/657a164783b53dc028ca6024f4df09f9e4a9b289e0a3216d2c686ec091a224c0

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/116574/

Comments