MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947
SHA3-384 hash: 71fdc573d619ca06f230ca632bb52cecf8347bfb6cc0e27850c198d83d0ccea712d9d23cc42e003373cca040d35a6bec
SHA1 hash: 5b7d021ebb6e64abbdc51a5c0469f6287f1924f1
MD5 hash: 8858954bbf2c3f1525ca1f6d07788ba3
humanhash: salami-maryland-mobile-lithium
File name:Overdue Account.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:688'648 bytes
First seen:2024-04-29 09:26:42 UTC
Last seen:2024-05-08 07:36:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:kRkB778QH82WS8U9AadmiotMCi3uQiXD0gNVT8d0W4Ubk0ILqRKs8i3W6BvxBkR:KkBR82vZ9An9pZQg0qZW00MqRKiG69+
Threatray 704 similar samples on MalwareBazaar
TLSH T115E4235DD6EC4E12F7DD8AB48D4A58434BB0B052DEC0DF8BAEC911CEE683B954160C6B
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 337129b20c100182 (8 x AgentTesla, 1 x SnakeKeylogger)
Reporter adrian__luca
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
331
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947.exe
Verdict:
Malicious activity
Analysis date:
2024-04-29 09:38:59 UTC
Tags:
smtp exfiltration stealer agenttesla
Link:
https://app.any.run/tasks/cbad6793-60fe-46d6-877b-3f2f92975e54

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
DNS request
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/662f67fad2fc149e41273bf0/reports/10cf2042-ad51-4633-af77-2dbec4699ddb/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947
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/7e08739a-dbc3-40b6-a3c9-10eeb68b46b1
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433221
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
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)
Injects a PE file into a foreign processes
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 ftp login credentials
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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1433221 Sample: Overdue Account.exe Startdate: 29/04/2024 Architecture: WINDOWS Score: 100 56 mail.plsco.org 2->56 68 Found malware configuration 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Antivirus / Scanner detection for submitted sample 2->72 74 14 other signatures 2->74 8 Overdue Account.exe 7 2->8         started        12 ujCdfdU.exe 2->12         started        14 chrome.exe 1 2->14         started        17 3 other processes 2->17 signatures3 process4 dnsIp5 52 C:\Users\user\AppData\Roaming\ujCdfdU.exe, PE32 8->52 dropped 54 C:\Users\user\AppData\Local\...\tmpA96E.tmp, XML 8->54 dropped 90 Writes to foreign memory regions 8->90 92 Allocates memory in foreign processes 8->92 94 Adds a directory exclusion to Windows Defender 8->94 96 Injects a PE file into a foreign processes 8->96 19 RegSvcs.exe 1 4 8->19         started        24 powershell.exe 23 8->24         started        26 powershell.exe 23 8->26         started        28 schtasks.exe 1 8->28         started        98 Antivirus detection for dropped file 12->98 100 Multi AV Scanner detection for dropped file 12->100 102 Machine Learning detection for dropped file 12->102 30 RegSvcs.exe 12->30         started        32 schtasks.exe 12->32         started        64 192.168.2.4, 138, 443, 49723 unknown unknown 14->64 66 239.255.255.250 unknown Reserved 14->66 34 chrome.exe 14->34         started        36 chrome.exe 17->36         started        38 2 other processes 17->38 file6 signatures7 process8 dnsIp9 58 mail.plsco.org 188.212.22.230, 49746, 49754, 587 NETMIHANIR Iran (ISLAMIC Republic Of) 19->58 50 C:\Users\user\AppData\Roaming\...\boqXv.exe, PE32 19->50 dropped 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->76 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->78 80 Loading BitLocker PowerShell Module 24->80 40 conhost.exe 24->40         started        42 WmiPrvSE.exe 24->42         started        44 conhost.exe 26->44         started        46 conhost.exe 28->46         started        82 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->82 84 Tries to steal Mail credentials (via file / registry access) 30->84 86 Tries to harvest and steal ftp login credentials 30->86 88 Tries to harvest and steal browser information (history, passwords, etc) 30->88 48 conhost.exe 32->48         started        60 www.google.com 142.250.190.4, 443, 49745, 49748 GOOGLEUS United States 34->60 62 google.com 34->62 file10 signatures11 process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 01:45:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
22 of 24 (91.67%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k7h3i4bnnebklbepjsktmoa7i3q3dnehb5o7osn2ju7rkzqorfdq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
1ec8dfd127970aeaa735e42a7484f1329f44953db3c9e52121c778f197157c72
AgentTesla
433327373b99264a0a5f11194a3722e1a53c832e837f0eab264f89306f9e42cb
AgentTesla
5d2b78785f719fda04cda095b4dfb75d00440fc39ab6e52d176a74786541bdaf
AgentTesla
781fb0c2f84cddbf3a09d4b8d51468fa89d98614457bc9d66e209330a385bf0d
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e0581b57a7e87e38a5a0ebf8861f816a415bdcb037111f32ba4bdbdc78ca9be3
AgentTesla
+ 694 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240429-ler7fafb74/
Behaviour
Creates scheduled task(s)
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
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
32765b7759a69bf539e476481b5d08c8c2a27d15a31252eeda829f3ffba65301
MD5 hash:
a14068aa8562313ef1ece3646a26068c
SHA1 hash:
2eb9a35241492513b316343b9af0dba20fcec882
Link:
https://www.unpac.me/results/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
SH256 hash:
e3be2d777953e011fb63ba9d0dec9f66a2a8ad545c8dfcf01795db9545249877
MD5 hash:
4882114c0105d0abc65098536ea0eb95
SHA1 hash:
a8c398ef0f9e56196de6383bbf1cad5bc03891db
Link:
https://www.unpac.me/results/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
SH256 hash:
9b4d439888ef68a8120ee2d81991bd674dc50b9b33f61ef1cf02167f47660dce
MD5 hash:
50b8889b511b31bf870f7c9566cb14b8
SHA1 hash:
a4c39ff98083c61a06ad2e22cc963c0cbb490b3f
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/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
SH256 hash:
4909093c1045073940daf73778f88ce3e5d4dcbc0d69e3498ad4672c2e699013
MD5 hash:
28b43a10958caef0465f7b93be0a0d77
SHA1 hash:
9c85c1cb7f6face0a6c8d0a2d2314a99092d6554
Link:
https://www.unpac.me/results/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
SH256 hash:
aed4a976a528f9472b707daae3bc4e722978bce7f0ac54b72cf1cfcd5981a5d8
MD5 hash:
9e4aea62ee76efb9013e6440afd8ffe6
SHA1 hash:
8d597f109698e7c74da0f20815fc4da575ce29c4
Link:
https://www.unpac.me/results/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
SH256 hash:
57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947
MD5 hash:
8858954bbf2c3f1525ca1f6d07788ba3
SHA1 hash:
5b7d021ebb6e64abbdc51a5c0469f6287f1924f1
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/e87a7717-5a92-49d2-a1d7-6f3e491ad486/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/57cfb4702d69/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/57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947

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: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: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: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.

Malspam

AgentTesla

Executable exe 57cfb4702d6902a5848f4c9536381f46e1b1b4870f5df749ba4d3f15660e8947

(this sample)

  
Delivery method
Distributed via e-mail attachment

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

Comments