MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f
SHA3-384 hash: 4bd1e16688f9d728b6e9e2449f4022143babb81c105ce8f62ce89355ce2da763de8f900204a688a84d5178d4d85acb89
SHA1 hash: 1da11ef72a1e9b360799c6039ba9dfe91e0b8368
MD5 hash: a488dedd2c71ff9455dff50479dfc62b
humanhash: hawaii-ceiling-ten-finch
File name:Ref344200.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'162'752 bytes
First seen:2021-02-09 08:47:25 UTC
Last seen:2021-02-09 10:54:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:pu13xKi80ts7yXwdX63prZsMRYb4Lw+KxyjyxnEONC5KRCI:yxK3As7ygArZsMRYbOhj7OIAR
Threatray 2'505 similar samples on MalwareBazaar
TLSH 0935DF81F290BF65F5295F704B10A26013E069CB8AD2C70EFCA77FCB7562681455ABCE
Reporter fabjer
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
103
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Ref344200.exe
Verdict:
Suspicious activity
Analysis date:
2021-02-09 02:50:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/71802b23-cc51-47e8-b724-2299fba6f1f8

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/116129/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.535.6846.21356.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/602686
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
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)
Sigma detected: MSBuild connects to smtp port
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 350360 Sample: Ref344200.exe Startdate: 09/02/2021 Architecture: WINDOWS Score: 100 34 Found malware configuration 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected AgentTesla 2->38 40 6 other signatures 2->40 7 Ref344200.exe 3 2->7         started        process3 file4 20 C:\Users\user\AppData\...\Ref344200.exe.log, ASCII 7->20 dropped 42 Writes to foreign memory regions 7->42 44 Allocates memory in foreign processes 7->44 46 Injects a PE file into a foreign processes 7->46 11 MSBuild.exe 3 7->11         started        14 MSBuild.exe 7->14         started        signatures5 process6 signatures7 48 Injects a PE file into a foreign processes 11->48 16 MSBuild.exe 8 11->16         started        50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->50 52 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->52 54 Found evasive API chain (trying to detect sleep duration tampering with parallel thread) 14->54 process8 dnsIp9 22 smtp.1and1.com 74.208.5.2, 49748, 49753, 49754 ONEANDONE-ASBrauerstrasse48DE United States 16->22 24 192.168.2.1 unknown unknown 16->24 26 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->26 28 Tries to steal Mail credentials (via file access) 16->28 30 Tries to harvest and steal ftp login credentials 16->30 32 2 other signatures 16->32 signatures10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2021-02-08 09:21:13 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jwo6ltksp75hjfpvw7sf7gnipheekp2y2cr7pnbmi5wp3b5bwyxq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
02673393853e5084906a0aaf7f396fd8627f56f75433c4c59368d45ded24e12f
AgentTesla
0cb6e0ca1aa4910def9dd267879d3747e5efb35d553a3624f28a8fa79354c2a7
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50534ba28f7816d167a68906737cb6fc77a40d48395dd3662fac75d8b9fd0228
AgentTesla
536a3acc388f5534b8a25f849b34ba16a01a28ff75fc28672669c55d63f357e0
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551f62709e81c5aae58beb29ab56cc7fc139516ffa19b9366969d0fac1fad88b
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5fcffc9f46e639452bab10ecbd5561232c83bfa938d45b24e1e753c2324acacf
AgentTesla
b781df66caf45fdac58f73a6afef70d175ba9a2cbac69f1b55386d90d5e847a4
AgentTesla
c37b36375c43623e1e11c9df83bc8b0a5fe77ca20851330d59fa491695a14437
AgentTesla
dfd350ff1a1ee6f495e22f985909ce95f75dcfab4d27318ca208f31a560888f1
AgentTesla
e290a382d4dd65d349efa235b0c6b7a9f488eaa69b319d4b3a148823a00c9d07
AgentTesla
+ 2'495 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/210209-61cdr533ds/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
2b2bcf851c2b87033fd24c890c2a1de3642564f7cec7282982d96b8280baa849
MD5 hash:
befb0470c71d676cc891cba16088975d
SHA1 hash:
5b7143f97d1d656fd1cacf70949048c1951b639a
Link:
https://www.unpac.me/results/2fbe31cc-901f-472d-a03b-1e318b3f69f3/
SH256 hash:
4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f
MD5 hash:
a488dedd2c71ff9455dff50479dfc62b
SHA1 hash:
1da11ef72a1e9b360799c6039ba9dfe91e0b8368
Link:
https://www.unpac.me/results/2fbe31cc-901f-472d-a03b-1e318b3f69f3/
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/4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f

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.

Malspam

AgentTesla

Executable exe 4d9de5cd527ffa7495f5b7e45f99a879c8453f58d0a3f7b42c476cfd87a1b62f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/116129/

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