MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3. 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 21 File information Comments
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SHA256 hash: fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3
SHA3-384 hash: 998f575c4aba4f4686b83e9f95b4a6cca721a69b6c95ee6df927c687e0798992f9cecd80ee9e7affe0f2bc1fa238a3cb
SHA1 hash: 8cf680dd42e9e4e1649698573e3f17ab9919df8e
MD5 hash: 5a9fb46b5034fd8af30f74735eeef49c
humanhash: river-indigo-coffee-nine
File name:SecuriteInfo.com.W32.MSIL_Kryptik.KZR.gen.Eldorado.14377.22773
Download: download sample
Signature AgentTesla
Create hunting rule
File size:952'840 bytes
First seen:2024-05-23 08:26:17 UTC
Last seen:2024-05-27 10:17:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:tuZsuRLyfDp2XqM6KTzDTtRXKVXx/uLxojvG8rMUxkR:gZsg+fDp2XxZTrWcG+hUs
Threatray 4'182 similar samples on MalwareBazaar
TLSH T10A15903D18FD26229160D6A4CFE0C663F150F4FA39A3992299D24755074BE9BBDC323E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter SecuriteInfoCom
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
396
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3.exe
Verdict:
Malicious activity
Analysis date:
2024-05-23 08:27:09 UTC
Tags:
smtp exfiltration stealer
Link:
https://app.any.run/tasks/baf5e28a-6b34-46c2-b072-2bf651e6a211

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.KZR.gen.Eldorado.14377.22773.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=664efebcaa38ca2df05df8dawin7simulatehigh_evasion
Tags:
Banker Encryption Execution Network Static Kryptik Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/664efdda458fabe8a956a5a3/reports/0e13ed03-1f84-4eb4-82b5-f2f30582309f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3
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/aa8701ce-26e2-4842-bc27-da2caa1e8ec7
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1446343
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1446343 Sample: SecuriteInfo.com.W32.MSIL_K... Startdate: 23/05/2024 Architecture: WINDOWS Score: 100 42 mail.valeofarma.it 2->42 44 mx4.vhostingcloud.com 2->44 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Sigma detected: Scheduled temp file as task from temp location 2->52 54 10 other signatures 2->54 8 SecuriteInfo.com.W32.MSIL_Kryptik.KZR.gen.Eldorado.14377.22773.exe 7 2->8         started        12 WBiJAzSTzgbR.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\WBiJAzSTzgbR.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmpAE6A.tmp, XML 8->40 dropped 56 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->56 58 Uses schtasks.exe or at.exe to add and modify task schedules 8->58 60 Adds a directory exclusion to Windows Defender 8->60 62 Injects a PE file into a foreign processes 8->62 14 SecuriteInfo.com.W32.MSIL_Kryptik.KZR.gen.Eldorado.14377.22773.exe 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        64 Multi AV Scanner detection for dropped file 12->64 66 Machine Learning detection for dropped file 12->66 24 WBiJAzSTzgbR.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 46 mx4.vhostingcloud.com 65.109.115.215, 49709, 49712, 49721 ALABANZA-BALTUS United States 14->46 68 Installs a global keyboard hook 14->68 70 Loading BitLocker PowerShell Module 18->70 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->72 74 Tries to steal Mail credentials (via file / registry access) 24->74 76 Tries to harvest and steal browser information (history, passwords, etc) 24->76 36 conhost.exe 26->36         started        signatures9 process10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-05-23 08:27:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7qpphhpmxctmpon2mhckjpuqjdm6plbjmgpgobgxksprkjfdw2rq._file
Verdict:
malicious
Similar samples:
25f756279b06d023c20cb1875e39f87852a0d861ef35f7478378ae7ae661765a
AgentTesla
86f2279dcd0fefd01392dda46e202ae5e1528322b34ddf7029ef3efd58b5b45e
AgentTesla
edc95b55201af0019567991377c9ed0e281a948edb2f316cbc80195d5bfa669b
AgentTesla
f6551f6c9a036c132e4faaa300361b024c79f2e0562ace17a042dc0793f1ee31
AgentTesla
fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3
AgentTesla
+ 4'172 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240523-kceynaag46/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Reads WinSCP keys stored on the system
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
AgentTesla
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/781d3bbf-f1bb-471b-9de6-7da0dadc6018
Unpacked files
SH256 hash:
0b7dcc18b0ef39734a24ca5923b02df82c670d08365fe376f2ed4ff9fcbc6303
MD5 hash:
0441cc0dacc6d821252e66a156b1d9bd
SHA1 hash:
df46cc702950a53a5de7b804d2076ef03f8ac6b4
Link:
https://www.unpac.me/results/ee1b3f3d-db04-4d27-ac63-da74bfe8a138/
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/ee1b3f3d-db04-4d27-ac63-da74bfe8a138/
SH256 hash:
05d488d6e4c2ac7a1b3854f8fa1e89fd0f6c5e77019ac83e5d30f50240a396bc
MD5 hash:
51e7f9cd2f87ece72008d845c3a8da01
SHA1 hash:
8ac6e477b0ffa11f4e98d1c737b3b44fd73797e6
Link:
https://www.unpac.me/results/ee1b3f3d-db04-4d27-ac63-da74bfe8a138/
SH256 hash:
6aedafbe60198bc2fe35522941f39307f41228275c177e6544b03b161abe2d7c
MD5 hash:
ae022ca1440803b24f64ed67258c4e30
SHA1 hash:
415d35edd2bfe46f828c4a66dafbbbe4652b3521
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/ee1b3f3d-db04-4d27-ac63-da74bfe8a138/
SH256 hash:
fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3
MD5 hash:
5a9fb46b5034fd8af30f74735eeef49c
SHA1 hash:
8cf680dd42e9e4e1649698573e3f17ab9919df8e
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/ee1b3f3d-db04-4d27-ac63-da74bfe8a138/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fc1ef39decb8/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/fc1ef39decb8a6c7b9ba61c4a4be9048d9e7ac29619e6704d7549f1524a3b6a3

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:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_9f4a80b2
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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