MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d. 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: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d
SHA3-384 hash: 3c18f8823c1f7c9bf50f15d9e3dc6942ad0f1c6a7fcfa005af06917ad6a07c6ea25d5cce29618ed4c42047d78f433b3e
SHA1 hash: 392469205cc5b2ce311a27414f471c67f856c2b4
MD5 hash: 302f6ce912598abf4195de92a5e02004
humanhash: oscar-solar-network-stream
File name:Correo postal 349892230.xls.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:76'800 bytes
First seen:2024-06-06 16:17:01 UTC
Last seen:2024-06-13 13:11:12 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 1536:ewyvklZg6SqkKjsV7fAEOD1wZPsMa9OTWa3:ewg0Z5SqhQVcSZPsvOTWc
Threatray 1'511 similar samples on MalwareBazaar
TLSH T11C733A9CD38D6ED6C6E91A3FE8E2176A87F0D460975BC34B2D8422E90CE7B730542653
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 James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
551
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d.exe
Verdict:
Malicious activity
Analysis date:
2024-06-06 17:19:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7dab6751-92d0-4f95-b4f9-26b62ce1e867

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RansomX-gen.26789.14705.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a process with a hidden window
Creating a file
Using the Windows Management Instrumentation requests
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
89%
Tags:
masquerade obfuscated packed packed smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/6661e1026b8dba248b3dabb4/reports/17e46b3e-ea8d-4353-a34a-1f4e36caa0bf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/3089f51f-75bc-4acb-bfd2-9a335f742672
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1453234
Signature
.NET source code contains potential unpacker
AI detected suspicious 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 dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Suspicious Double Extension File Execution
Snort IDS alert for network traffic
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 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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1453234 Sample: Correo postal 349892230.xls.exe Startdate: 06/06/2024 Architecture: WINDOWS Score: 100 32 mail.100demoras.pt 2->32 34 ip-api.com 2->34 36 2 other IPs or domains 2->36 48 Snort IDS alert for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 14 other signatures 2->54 7 Correo postal 349892230.xls.exe 15 5 2->7         started        12 Okcighceybr.exe 14 3 2->12         started        14 Okcighceybr.exe 2 2->14         started        signatures3 process4 dnsIp5 38 afanew.cl 138.255.101.194, 443, 49701, 49711 GRUPOZGHSPACL Chile 7->38 22 C:\Users\user\AppData\...\Okcighceybr.exe, PE32 7->22 dropped 24 C:\Users\...\Okcighceybr.exe:Zone.Identifier, ASCII 7->24 dropped 26 C:\...\Correo postal 349892230.xls.exe.log, ASCII 7->26 dropped 56 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->56 16 Correo postal 349892230.xls.exe 2 7->16         started        58 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->58 60 Machine Learning detection for dropped file 12->60 20 Okcighceybr.exe 12->20         started        file6 signatures7 process8 dnsIp9 28 ip-api.com 208.95.112.1, 49702, 49713, 80 TUT-ASUS United States 16->28 30 100demoras.pt 188.40.116.241, 49703, 49710, 49714 HETZNER-ASDE Germany 16->30 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->40 42 Tries to steal Mail credentials (via file / registry access) 20->42 44 Tries to harvest and steal ftp login credentials 20->44 46 Tries to harvest and steal browser information (history, passwords, etc) 20->46 signatures10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-06-06 15:52:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=scyrfpozczj3uoh3ynz62kghx6kgp5t7mtje6gwkbxjkjau7eroq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
2b0164c3ecb22bf4c514feef0f9471ab8a206663a3f3f38fc90a806090989f13
AgentTesla
519a81a6a4377d435fd2932ab99343c034b563d5c63c38eac42c920d98fc3e86
AgentTesla
7ecf055419ccb76a13fa53d8f5c5888ea369271ceaad4263f952da6d265c4c41
AgentTesla
8b8d68a47897fc7f8612ad932aec65de7e5523d2ed7619dadb686f1c1adeab80
AgentTesla
a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6
AgentTesla
b17bb3acfdbdc750bc117c6e973019d71f6f182b64ed4e680746ac6604158c18
AgentTesla
+ 1'501 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/240606-trcxaahe35/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Reads WinSCP keys stored on the system
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:
90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d
MD5 hash:
302f6ce912598abf4195de92a5e02004
SHA1 hash:
392469205cc5b2ce311a27414f471c67f856c2b4
Detections:
PureCrypter_Stage1
Create hunting rule
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/9b23d8b5-cb83-4eac-9f8a-166dd2fc1c97/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/90b112bdd916/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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 90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d

(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 (GUARD_CF)high

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