MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6
SHA3-384 hash: cc1f2f60ad3bd177b18a64c9eeb3bdfadf29ffa9a699d3968ad7dcab6c27cf6ee41033a010185e4df284091b45a69973
SHA1 hash: 6af36a0768884ad9fd39507911d824d1dc2963db
MD5 hash: bc48ec658d3ae45d8eaf52b6f1ab75fd
humanhash: stream-kentucky-eight-summer
File name:Rfq clarifications.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:26'112 bytes
First seen:2022-05-21 05:58:50 UTC
Last seen:2022-05-21 06:36:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:pCAnY/F8NmJdU8Iu4LPXptj0KFokxWhQPW:pNYdRdURuytYKeE
Threatray 17'194 similar samples on MalwareBazaar
TLSH T1FBC270077FA78D7AF6D50F73953153112B709729623B5BAC3D803299FEA66C34E01AA0
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 0f33694dcd65231f (3 x AgentTesla, 1 x AveMariaRAT, 1 x NanoCore)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
362
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
Rfq clarifications.exe
Verdict:
Malicious activity
Analysis date:
2022-05-21 06:00:17 UTC
Tags:
keylogger stealer agenttesla trojan rat
Link:
https://app.any.run/tasks/b2ba6072-baaa-4f71-9dcf-018d36001a22

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/273279/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/62887faf6eb3ff326318df45/reports/773f9635-25b1-4222-ac59-92e4cf242dd5/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bdfeaa22-306f-4ab8-a259-4aaa9c39c0a0
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/999033
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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
Snort IDS alert for network traffic
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 631525 Sample: Rfq clarifications.exe Startdate: 21/05/2022 Architecture: WINDOWS Score: 100 41 Snort IDS alert for network traffic 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 9 other signatures 2->47 7 Rfq clarifications.exe 15 4 2->7         started        12 newapp.exe 2 2->12         started        14 newapp.exe 1 2->14         started        process3 dnsIp4 39 62.197.136.3, 49712, 80 SPRINTLINKUS Netherlands 7->39 35 C:\Users\user\...\Rfq clarifications.exe.log, ASCII 7->35 dropped 61 Writes to foreign memory regions 7->61 63 Allocates memory in foreign processes 7->63 65 Injects a PE file into a foreign processes 7->65 16 MSBuild.exe 2 8 7->16         started        21 MSBuild.exe 7->21         started        23 cmd.exe 1 7->23         started        25 conhost.exe 12->25         started        27 conhost.exe 14->27         started        file5 signatures6 process7 dnsIp8 37 mail.modernsystemsco.com 129.121.2.210, 49752, 49765, 587 ASMALLORANGE1US United States 16->37 33 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 16->33 dropped 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->49 51 Tries to steal Mail credentials (via file / registry access) 16->51 53 Tries to harvest and steal ftp login credentials 16->53 59 2 other signatures 16->59 55 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->55 57 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 21->57 29 conhost.exe 23->29         started        31 timeout.exe 1 23->31         started        file9 signatures10 process11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6/
Threat name:
ByteCode-MSIL.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2022-05-19 02:11:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hrbesc7bh2tzd7w2kpuj6gnlylcde3gfqhu7p62aia2a4ofvu7da._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
12debb5b625d08f6bc4dd6160435cfde52a33c11dccd4b10fa07c225aba9565b
AgentTesla
191e0b6b997739d71b92939ca736a43be3e742aa1b8baf025b5f9114f1f3e7ae
AgentTesla
2aa8f6347e3d331950c557528790162d59d5607fadbb111e1cefad5a34ba6cd9
AgentTesla
4dec45a4095ce92e7bc46962358c73f3e52b57a13128947fcebeeed3d866ff5e
AgentTesla
6e38a3ddc750c13372311bd90bf5bdde571d005f1af0c62b1eb95b02467ee2d1
AgentTesla
91c7b4d4562824503e151f7cc5eddcc5df9a767f2857ca9579a6c9ad6e496ae0
AgentTesla
b64081fc4a7dc5e73ab017b1f0453c27d5e6040134dd269bc01de45cad3713b7
AgentTesla
b789ea800e24253ead1c150643aa729e7b7d5253bf6319aa4321680c615b8ec2
AgentTesla
+ 17'184 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220521-gpqn5sadc6/
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
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE MSIL/Kryptik.XSY Data Exfil via SMTP
Unpacked files
SH256 hash:
3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6
MD5 hash:
bc48ec658d3ae45d8eaf52b6f1ab75fd
SHA1 hash:
6af36a0768884ad9fd39507911d824d1dc2963db
Link:
https://www.unpac.me/results/e26c38a1-befc-4585-9327-e7e10b3edb2f/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3c42490be13e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

AgentTesla

Executable exe 3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/273279/

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