MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a
SHA3-384 hash: 0a81062450cfed58246f145cbdfe9d4e67abd4ad8e40e724ac70b60eab830f8553eeb402ea88a273e40a02d36e332fc1
SHA1 hash: 131fb28846dcaf6e98a284dbb29c5e34c5e2a936
MD5 hash: 3862e09a5b864a2c9e12d26c58822df4
humanhash: seventeen-friend-august-mexico
File name:0009281667-02.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:316'400 bytes
First seen:2021-02-03 07:03:58 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:J6LYrUVjkXdCfWd5ppJI8L4s5kSFxNPnfokdH9jGIWmiKduNNZJRfFsQ:NBCfWdtJf3/dYkdH9qKd8DsQ
TLSH 1764BEF875047DE6766F026BDE96ADDD13B6266399CB98CC80A47BC305A3375FE02804
Reporter lowmal3
Tags:AgentTesla doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0009281667-02.doc
Verdict:
Malicious activity
Analysis date:
2021-02-03 07:07:18 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/d89cd6a4-f396-496a-a48a-c4424a5723d4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

Porcupine.Trojan.99553.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file in the %AppData% directory
Running batch commands
Creating a process with a hidden window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process by context flags manipulation
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/597457
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide a thread from the debugger
Drops PE files with a suspicious file extension
Found malware configuration
Hides threads from debuggers
Injects a PE file into a foreign processes
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
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: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 347766 Sample: 0009281667-02.doc Startdate: 03/02/2021 Architecture: WINDOWS Score: 100 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Multi AV Scanner detection for domain / URL 2->53 55 Found malware configuration 2->55 57 10 other signatures 2->57 8 EQNEDT32.EXE 11 2->8         started        13 WINWORD.EXE 291 21 2->13         started        process3 dnsIp4 39 tunedinblog.com 150.95.81.183, 49165, 80 GMO-Z-COM-THGMO-ZcomNetDesignHoldingsCoLtdSG Singapore 8->39 29 C:\Users\user\AppData\Roaming\kdot58644.scr, PE32 8->29 dropped 31 C:\Users\user\AppData\Local\...\kdotx[1].scr, PE32 8->31 dropped 65 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->65 15 kdot58644.scr 12 1 8->15         started        file5 signatures6 process7 dnsIp8 41 193.239.147.103, 49166, 80 DEDIPATH-LLCUS Brunei Darussalam 15->41 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->43 45 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 15->45 47 Hides threads from debuggers 15->47 49 2 other signatures 15->49 19 kdot58644.scr 4 15->19         started        23 cmd.exe 15->23         started        25 kdot58644.scr 15->25         started        signatures9 process10 dnsIp11 33 mail.sardaplywood.com 67.225.218.11, 49167, 49168, 49170 LIQUIDWEBUS United States 19->33 35 elb097307-934924932.us-east-1.elb.amazonaws.com 54.235.142.93, 443, 49172 AMAZON-AESUS United States 19->35 37 2 other IPs or domains 19->37 59 Tries to steal Mail credentials (via file access) 19->59 61 Tries to harvest and steal ftp login credentials 19->61 63 Tries to harvest and steal browser information (history, passwords, etc) 19->63 27 timeout.exe 23->27         started        signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-03 02:56:45 UTC
AV detection:
21 of 45 (46.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vsndgqk6w3wih2wy6ehc65e3lvofh573tz2y22dodmaydg2ezbva._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210203-fdntdj4awe/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Looks up external IP address via web service
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
Blocklisted process makes network request
Executes dropped EXE
AgentTesla
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/ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a

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_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.

File information

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

Malspam

AgentTesla

Word file doc ac9a33415eb6ec83ead8f10e2f749b5d5c53f7fb9e758d686e1b01819b44c86a

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments