MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a33ccb09660326d4158898be2f17d43b3c94fc901ecd97d30d932421bb92023. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments 1

SHA256 hash: 4a33ccb09660326d4158898be2f17d43b3c94fc901ecd97d30d932421bb92023
SHA3-384 hash: 9e5e405b259471645393df51e4aca94ecced220d744013092f2d1072ec1e8338510c1d0cf06ea733ee8d8084f70a8364
SHA1 hash: abc49390a7aac6f4cd5e7e7f8659453219271e60
MD5 hash: 311ee07d43437842a1f6536d029c822d
humanhash: paris-early-quebec-east
File name:shipping documents.exe
Download: download sample
Signature AgentTesla
File size:276'420 bytes
First seen:2021-05-24 08:28:13 UTC
Last seen:2021-05-25 08:00:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:8sBmtlbJt7j6kxwqNiiJYn5re88Ljr0Cu9OD9T2152rX86sPxGBovAvuK0:FelbJBwqiiJY5reLggKArXM0BovPK0
Threatray 5'258 similar samples on MalwareBazaar
TLSH A544229B56C0C4B7E56A1B720EB3D277E335E7193419436F7B288FAE6D05187F04828A
Reporter GovCERT_CH
Tags:AgentTesla

Intelligence


File Origin
# of uploads :
6
# of downloads :
126
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
shipping documents.exe
Verdict:
Malicious activity
Analysis date:
2021-05-24 08:30:42 UTC
Tags:
installer

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

Behaviour
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Launching a process
Creating a window
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Changing the hosts file
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.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Creates multiple autostart registry keys
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the hosts file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: MSBuild connects to smtp port
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 access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 422568 Sample: shipping documents.exe Startdate: 24/05/2021 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Yara detected AgentTesla 2->47 49 7 other signatures 2->49 6 pcfymneqlf.exe 18 2->6         started        10 shipping documents.exe 1 23 2->10         started        12 pcfymneqlf.exe 18 2->12         started        14 2 other processes 2->14 process3 file4 33 C:\Users\user\AppData\Local\...\System.dll, PE32 6->33 dropped 63 Writes to foreign memory regions 6->63 65 Maps a DLL or memory area into another process 6->65 16 MSBuild.exe 2 4 6->16         started        35 C:\Users\user\AppData\...\pcfymneqlf.exe, PE32 10->35 dropped 37 C:\Users\user\AppData\Local\...\System.dll, PE32 10->37 dropped 67 Creates multiple autostart registry keys 10->67 21 MSBuild.exe 2 10->21         started        39 C:\Users\user\AppData\Local\...\System.dll, PE32 12->39 dropped 69 Multi AV Scanner detection for dropped file 12->69 71 Machine Learning detection for dropped file 12->71 23 MSBuild.exe 2 12->23         started        25 conhost.exe 14->25         started        27 conhost.exe 14->27         started        signatures5 process6 dnsIp7 41 wasstech.com 204.93.196.181, 49773, 587 SERVERCENTRALUS United States 16->41 29 C:\Users\user\AppData\Roaming\...29XLun.exe, PE32 16->29 dropped 31 C:\Windows\System32\drivers\etc\hosts, ASCII 16->31 dropped 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->51 53 Tries to steal Mail credentials (via file access) 16->53 55 Creates multiple autostart registry keys 16->55 61 4 other signatures 16->61 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->57 59 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 21->59 file8 signatures9
Threat name:
Win32.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-05-24 07:44:06 UTC
AV detection:
8 of 47 (17.02%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Malspam

AgentTesla

Executable exe 4a33ccb09660326d4158898be2f17d43b3c94fc901ecd97d30d932421bb92023

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-24 09:18:36 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
3) [C0045] File System Micro-objective::Copy File
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
15) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
16) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
17) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
18) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
19) [C0017] Process Micro-objective::Create Process
20) [C0038] Process Micro-objective::Create Thread
21) [C0018] Process Micro-objective::Terminate Process