MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd. 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: 17


Intelligence 17 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd
SHA3-384 hash: 88801278373c4d6080c9b51f12da0c8eb40dc5a16f546fa88b3325c744a8b94913ca9dfbd3c553b0c83ccd5a830ed56a
SHA1 hash: 1014e96c0cbbe5b596b060096f7796f1d5e1d4c9
MD5 hash: bfc2eb591ad87cffce1dd3f5085e43e3
humanhash: cup-robert-early-blue
File name:1714574301dc258255f3f7ccb96253ff386133347dc0a57421197b32d9050e344d571692e1726.dat-decoded
Download: download sample
Signature AgentTesla
Create hunting rule
File size:244'224 bytes
First seen:2024-05-01 14:38:24 UTC
Last seen:2024-05-10 10:35:57 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 3072:UqKpQb1htB1Tpeaqm86z4k8geoG0MsvPb30+n5Lht+r7E:+Qb1htB1lef6YNbsnb3jLtM
Threatray 4'149 similar samples on MalwareBazaar
TLSH T1033411037E88EB11E1A97E3782EF6C2413B2B4C71633C60B9F49AF5518516926C7E72D
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:AgentTesla base64-decoded exe


Avatar
abuse_ch
Malware dropped as base64 encoded payload

Intelligence

File Origin
# of uploads :
2
# of downloads :
363
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd.exe
Verdict:
Malicious activity
Analysis date:
2024-05-01 14:50:03 UTC
Tags:
evasion ftp stealer agenttesla exfiltration
Link:
https://app.any.run/tasks/d11d9fac-93f7-4fa2-b753-ef0ac9dae2bf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Msilperseus-9956591-0
Create hunting rule

Win.Packed.Generic-10003641-0
Create hunting rule

Win.Packed.Generic-10011753-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Creating a window
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
90%
Tags:
anti-vm evasive fingerprint hacktool hook keylogger lolbin remote stealer
Link:
https://www.filescan.io/uploads/6632540a9cdc03b57ab8e3f1/reports/878ea1ca-6be7-4380-8beb-bb2964a380f7/overview
Verdict:
Malicious
Labled as:
Trojan.MSIL.Basic.8
Link:
https://www.hybrid-analysis.com/sample/aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/47602d82-a991-4a65-81b9-9fd609540955
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1434705
Signature
Antivirus / Scanner detection for submitted sample
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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 steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-05-01 14:39:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vjc4yi2ydto3p7ggg63djqqd6r25ezqdf6uvojnd67uegmgb5p6q._file
Verdict:
malicious
Similar samples:
5a420cf9353018576f8b446fd12723e585b96e2086b4aabf06cd113f376a6369
AgentTesla
5bd3f5d12690c59a0b40566fdc674310f02d4e19d6a6c6dba23b71854872d1fd
AgentTesla
aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd
AgentTesla
f77d1615e308cfaf24e0e7982778ea3837aab0599a4d5f142cd6557f930bbf5b
AgentTesla
f965267c9355d56472408f903ba9ddfea146c796a561426eac3ec35c46857a7d
AgentTesla
+ 4'139 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240501-r1ar6shc7s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Looks up external IP address via web service
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd
MD5 hash:
bfc2eb591ad87cffce1dd3f5085e43e3
SHA1 hash:
1014e96c0cbbe5b596b060096f7796f1d5e1d4c9
Detections:
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
MALWARE_Win_AgentTeslaV2
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_SUSPICIOUS_EXE_SandboxHookingDLL
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/14607bee-2747-497b-822b-fd6f282c2e22/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa45cc23581c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd

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:AgentTeslaV2
Create hunting rule
Author:ditekshen
Description:AgenetTesla Type 2 Keylogger payload
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:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
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:MALWARE_Win_AgentTeslaV2
Create hunting rule
Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:NETexecutableMicrosoft
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
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.

dc258255f3f7ccb96253ff386133347dc0a57421197b32d9050e344d571692e1

AgentTesla

Executable exe aa45cc23581cddb7fcc637b634c203f475d266032fa95725a3f7e84330c1ebfd

(this sample)

  
Dropped by
SHA256 dc258255f3f7ccb96253ff386133347dc0a57421197b32d9050e344d571692e1
  
Dropped by
MD5 06351b596c811db29c9025f6d9b25a76
  
URLhaus
https://urlhaus.abuse.ch/url/2833506/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2836763/
  
URLhaus
https://urlhaus.abuse.ch/url/2836984/

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