MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4fe2efffd5d2755a2f33aecf92d5291b3e433e9cd2d01b4d507a62ce8225374a. 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
| SHA256 hash: | 4fe2efffd5d2755a2f33aecf92d5291b3e433e9cd2d01b4d507a62ce8225374a |
|---|---|
| SHA3-384 hash: | d17f999bfd2446f045ef84f1f3c6208971624d1cfa639453336b09389b401a85f181a9adf3fd4ee854489aaaeffff884 |
| SHA1 hash: | 048e948b7c326d037bf0ad6140ad177389b8c80e |
| MD5 hash: | bb091281b7dd6c8b21c7bbd65db97491 |
| humanhash: | muppet-arizona-minnesota-helium |
| File name: | MullvadVPN-2023.4.exe |
| Download: | download sample |
| Signature | AgentTesla |
| File size: | 209'408 bytes |
| First seen: | 2023-09-30 18:12:02 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 3072:3YJX84LUWNTkH+LGP34oCKerVUzeeDXbwa21Dv9ua/aHyvcnd2its:3YJs4LUUSbwv |
| Threatray | 1'577 similar samples on MalwareBazaar |
| TLSH | T12824A40D67A44625E4FE77315460FB2B6370A4524B13EE0B4BF158A5DBE33408EDAEA3 |
| 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) |
| File icon (PE): |  |
| dhash icon | e0e0e26c68e9f0f0 (2 x AgentTesla) |
| Reporter |  stealerkiller |
| Tags: | AgentTesla exe RAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
337
Origin country :
GBVendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
MullvadVPN-2023.4.exe
Verdict:
Malicious activity
Analysis date:
2023-09-30 19:10:49 UTC
Tags:
agenttesla stealer evasion loader formbook xloader spyware
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV2
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Creating a window
Creating a file in the %temp% directory
Reading critical registry keys
Creating a process from a recently created file
Query of malicious DNS domain
Sending a TCP request to an infection source
Moving of the original file
Stealing user critical data
Unauthorized injection to a recently created process
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control crypto fingerprint fingerprint infostealer keylogger lolbin masquerade packed packed phishing replace shell32 stealer stealer
Verdict:
Malicious
Labled as:
MSIL.PasswordStealerA.Generic
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:
Formbook
Verdict:
Malicious
Result
Threat name:
Agent Tesla, AgentTesla, FormBook
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to capture screen (.Net source)
Detected Agent Tesla keylogger
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May check the online IP address of the machine
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Moves itself to temp directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
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 Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses known network protocols on non-standard ports
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2023-09-30 17:03:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
29 of 36 (80.56%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
agenttesla
formbook
Similar samples:
+ 1'567 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:pr17 collection rat spyware stealer trojan
Behaviour
Gathers network information
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Formbook payload
Formbook
Unpacked files
SH256 hash:
4fe2efffd5d2755a2f33aecf92d5291b3e433e9cd2d01b4d507a62ce8225374a
MD5 hash:
bb091281b7dd6c8b21c7bbd65db97491
SHA1 hash:
048e948b7c326d037bf0ad6140ad177389b8c80e
Detections:
win_agent_tesla_g1
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
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: | AgentTesla |
|---|---|
| Author: | kevoreilly |
| Description: | AgentTesla Payload |
| Rule name: | AgentTeslaV2 |
|---|---|
| Author: | ditekshen |
| Description: | AgenetTesla Type 2 Keylogger payload |
| Rule name: | AgentTesla_mod_tough_mem |
|---|---|
| Author: | James_inthe_box |
| Reference: | https://app.any.run/tasks/3b5d409c-978b-4a95-a5f1-399f0216873d/ |
| Rule name: | agent_tesla |
|---|---|
| Author: | Stormshield |
| Description: | Detecting HTML strings used by Agent Tesla malware |
| Rule name: | Disable_Defender |
|---|---|
| Author: | iam-py-test |
| Description: | Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen |
| Rule name: | INDICATOR_SUSPICIOUS_Binary_References_Browsers |
|---|---|
| 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 |
|---|---|
| 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 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many email and collaboration clients. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many file transfer clients. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_GENInfoStealer |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables containing common artifcats observed in infostealers |
| Rule name: | MALWARE_Win_AgentTeslaV2 |
|---|---|
| Author: | ditekSHen |
| Description: | AgenetTesla Type 2 Keylogger payload |
| Rule name: | MALWARE_Win_AgentTeslaV3 |
|---|---|
| Author: | ditekSHen |
| Description: | AgentTeslaV3 infostealer payload |
| Rule name: | Multifamily_RAT_Detection |
|---|---|
| Author: | Lucas Acha (http://www.lukeacha.com) |
| Description: | Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETDLLMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
AgentTesla
Delivery method
Distributed via web download
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