MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d3bb831e904ca390bd809788eea4f5c417e3bdb06ec6f0113a2083153ca4d7a9. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
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SHA256 hash: d3bb831e904ca390bd809788eea4f5c417e3bdb06ec6f0113a2083153ca4d7a9
SHA3-384 hash: 69b3c71c3c07f7ff8e69b1b00f929e6c9e8704794d821c1c17f26d5da3db00dcb7c730d8d620dd38e0a85d57c9a9ec83
SHA1 hash: 168ad1d3024113edd088e8e6887d4d818d9be724
MD5 hash: c29b10eb9bb66d236536232dac080a15
humanhash: bravo-happy-pizza-jig
File name:Urgent RFQ #2105031.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:535'040 bytes
First seen:2021-09-01 13:46:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:b1vroW7QmIMvh1+0zhRGPvjCUjuDg0CZq0gcQL0E+1:b1lMm3RQ/wg0CZq0g7
Threatray 9'269 similar samples on MalwareBazaar
TLSH T137B4E04D725476DFC52BCD76C9641C60EA61B4BB430BE20794A326AD9E0D2ABCF061F3
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Urgent RFQ #2105031.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-01 16:29:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a53f4ec6-003c-4cb2-9eab-62d562cbd993

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/184469/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.19460.13345.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0f0dfd2d-eb0e-4380-b49f-dac8aab3150f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/843353
Signature
.NET source code contains very large array initializations
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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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: Suspicious Double Extension
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 access)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 475784 Sample: Urgent RFQ #2105031.pdf.exe Startdate: 01/09/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 Yara detected AgentTesla 2->43 45 9 other signatures 2->45 6 Urgent RFQ #2105031.pdf.exe 3 2->6         started        10 OBjSdZX.exe 3 2->10         started        12 OBjSdZX.exe 2->12         started        process3 file4 23 C:\Users\...\Urgent RFQ #2105031.pdf.exe.log, ASCII 6->23 dropped 47 Injects a PE file into a foreign processes 6->47 14 Urgent RFQ #2105031.pdf.exe 2 5 6->14         started        49 Multi AV Scanner detection for dropped file 10->49 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->51 53 Machine Learning detection for dropped file 10->53 55 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 10->55 19 OBjSdZX.exe 2 10->19         started        21 OBjSdZX.exe 10->21         started        signatures5 process6 dnsIp7 29 us2.smtp.mailhostbox.com 208.91.199.225, 49717, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->29 25 C:\Users\user\AppData\Roaming\...\OBjSdZX.exe, PE32 14->25 dropped 27 C:\Users\user\...\OBjSdZX.exe:Zone.Identifier, ASCII 14->27 dropped 31 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->31 33 Tries to steal Mail credentials (via file access) 14->33 35 Tries to harvest and steal ftp login credentials 14->35 37 2 other signatures 14->37 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d3bb831e904ca390bd809788eea4f5c417e3bdb06ec6f0113a2083153ca4d7a9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-01 01:25:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2o5yghuqjsrzbpmas6eo5jhvyql6hpnqn3dpaej2ecbrkpfe26uq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
25e011e57e7ef6ca2c972b6f32bfce6fc649e96d392c9dd430d7679085391b6f
AgentTesla
2e10233f14882e29da2131e7239cb850c3541e014ff77ce51a1a355f6a57e431
AgentTesla
5cf8e944ea54195e221343dec2bb3728c5faecc2b55be781b597503a7ae2fd39
AgentTesla
657c69de502eb40844ebd953f665be2d7e1679b886a049ec6cdd246c3baf2360
AgentTesla
6f871f3642191d04e4fe20f022f738d89b3ad90b531cef6adde91d10f257431d
AgentTesla
7fb4a26d9f2c3a08c69d7f5838b7f88d8c6f31ab2aa69b130b150449baaea7ad
AgentTesla
bccd1fc4ce5a57bec557420fab248f7eb3c090d0374c454375f2c864376c970d
AgentTesla
bd89f6e2794f0c383ca15b99c53a28d6b527be58ec713efcafff4f0db21959f9
AgentTesla
+ 9'259 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/210901-esq3qtfgme/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
a1422e8cba24f2f4b09aa5f1dd97ff604169eb2ae6f9d486a92aa27e73a80328
MD5 hash:
47436ad86664cd20c4bc03c64d83bc04
SHA1 hash:
c271262d438830bc50cbaef2c9a4f507ee36ec05
Link:
https://www.unpac.me/results/18e880a5-d2de-4ff4-9fce-43a1e92c492e/
SH256 hash:
fde77ba95771eb9e1e9694c513a022a6b738fe0fc99bb20aaedc66a250db89db
MD5 hash:
00a358d59a96aaa1c4874f0c678bb566
SHA1 hash:
ad263cdb73d97ed83761abf9dcc621fe6b60eae2
Link:
https://www.unpac.me/results/18e880a5-d2de-4ff4-9fce-43a1e92c492e/
SH256 hash:
fd47000563b112d8a03204232cdf9678dfa62e01ff7aef96b6ad864d90db5fc2
MD5 hash:
a4845d00f828575c52f524a88c60cf6a
SHA1 hash:
5ee8c2772f168be208dbaa48030405848ddc1e46
Link:
https://www.unpac.me/results/18e880a5-d2de-4ff4-9fce-43a1e92c492e/
SH256 hash:
d3bb831e904ca390bd809788eea4f5c417e3bdb06ec6f0113a2083153ca4d7a9
MD5 hash:
c29b10eb9bb66d236536232dac080a15
SHA1 hash:
168ad1d3024113edd088e8e6887d4d818d9be724
Link:
https://www.unpac.me/results/18e880a5-d2de-4ff4-9fce-43a1e92c492e/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/d3bb831e904c/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/d3bb831e904ca390bd809788eea4f5c417e3bdb06ec6f0113a2083153ca4d7a9

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
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Create hunting rule
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/184469/

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