MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3. 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: 18


Intelligence 18 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3
SHA3-384 hash: 42659b0a7eaa18783c8726296213542750d9876d24746c0f0964542c954d35d5f3d1196b2178a53f9acd2db237765509
SHA1 hash: cacc13004de34367780b8ee66934f24abc4c6ef6
MD5 hash: 2653c9763a6330c84d78a63f61955ebf
humanhash: zulu-princess-music-five
File name:Enquiry.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:790'528 bytes
First seen:2023-11-07 15:27:16 UTC
Last seen:2023-11-08 07:49:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:HVpBiXfE+9+cRT0F0X5noU4PUQPD147KI2gnQX9:Q59T0FClinmQ
TLSH T1B5F4D021627D5FABC97B53F44650444443F2AF69257EE32A4DC670CFAAE9B400B82F63
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
5
# of downloads :
331
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
Enquiry.exe
Verdict:
Malicious activity
Analysis date:
2023-11-07 15:49:52 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/d1fbe6bc-66bb-4ea8-8f99-f39643279a4e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.26329.20795.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Reading critical registry keys
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/654a57826f0bce33263685a5/reports/2350c59e-b221-4fd2-8ee3-e8ea1c65b2c9/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c07d8cce-2ad5-4887-abd8-81106ba6dfcd
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338323
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1338323 Sample: Enquiry.exe Startdate: 07/11/2023 Architecture: WINDOWS Score: 100 29 mail.dayanbiotech.ir 2->29 31 dayanbiotech.ir 2->31 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for dropped file 2->47 49 10 other signatures 2->49 7 Enquiry.exe 3 2->7         started        10 Micosoft Excel 2020.exe 2 2->10         started        12 Micosoft Excel 2020.exe 3 2->12         started        signatures3 process4 signatures5 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->51 53 Injects a PE file into a foreign processes 7->53 14 Enquiry.exe 1 5 7->14         started        19 Enquiry.exe 7->19         started        21 Micosoft Excel 2020.exe 2 10->21         started        23 Micosoft Excel 2020.exe 2 12->23         started        process6 dnsIp7 33 dayanbiotech.ir 5.9.154.209, 49711, 49716, 49721 HETZNER-ASDE Germany 14->33 25 C:\Users\user\...\Micosoft Excel 2020.exe, PE32 14->25 dropped 27 Micosoft Excel 2020.exe:Zone.Identifier, ASCII 14->27 dropped 35 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->35 37 Tries to steal Mail credentials (via file / registry access) 14->37 39 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->39 41 Tries to harvest and steal browser information (history, passwords, etc) 21->41 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-07 07:47:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
21 of 37 (56.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yo4bhdfpgslrocgx4ibhyx6fnl74r7g4wollgf67rwpwohlxesrq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/231107-swbdksbb2x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/a7ed09c7-c5bf-4217-af1f-65a6cba723b5/
SH256 hash:
7caffaa2b5d6b33fc2772a16009eacb6ded4952dc4fe59311faf9051ada408bb
MD5 hash:
03aabfb062ccfcff59181e4b19066a60
SHA1 hash:
6b713b6566f16d5e3728363f245098c3730cc78e
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/a7ed09c7-c5bf-4217-af1f-65a6cba723b5/
Parent samples :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 hash:
bfef9eac82e53e8d63bcb3b3022880eaf8f22cbbc6c69f3782b59c438f649f12
MD5 hash:
ddf81912128dd196140e9be656c3a212
SHA1 hash:
51221baf7115f7f2de03cd00b8b25cfde9241a35
Link:
https://www.unpac.me/results/a7ed09c7-c5bf-4217-af1f-65a6cba723b5/
SH256 hash:
fa0b7aca7bf8a89fb6982bcffc60f368aa00bd6316e24aa663bf269656667fd6
MD5 hash:
66f6dc6a503015fc62a324eb1fcb91a4
SHA1 hash:
43832ed8df1dad76a9cf95958da6a6be20860d26
Link:
https://www.unpac.me/results/a7ed09c7-c5bf-4217-af1f-65a6cba723b5/
SH256 hash:
c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3
MD5 hash:
2653c9763a6330c84d78a63f61955ebf
SHA1 hash:
cacc13004de34367780b8ee66934f24abc4c6ef6
Link:
https://www.unpac.me/results/a7ed09c7-c5bf-4217-af1f-65a6cba723b5/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c3b8138caf34/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
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 c3b8138caf34971708d7e2027c5fc56affc8fcdcb396b317df8d9f671d7724a3

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments