MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200
SHA3-384 hash: e38e36152f777c376bb23208b285042c8306fd120eedc4ccbe152c949d2b43a73c291368f5b31ac38343387e289cd3fc
SHA1 hash: 45485bbf1affe2690da85de769cd08992eaccee8
MD5 hash: 4a5d8bd9d3e7390859c71304be5ebd8e
humanhash: white-cold-football-alpha
File name:ORDER_ENQ0001.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:315'292 bytes
First seen:2021-02-04 06:45:35 UTC
Last seen:2021-02-04 09:24:54 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:lM6LYrUVjkXdCfWd5ppJI8L4s5kSFxNPnfokdH9jGIWmiKduNNZJRfFs1A:sBCfWdtJf3/dYkdH9qKd8Dse
TLSH 1B64BEF875043DE6766F426BDE96ADDD13B6266399CB94CC80A87BC305A3375FE02804
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: serve9.stigram.it
Sending IP: 194.87.42.16
From: Mohamed Abdel <info@mamax.ml>
Subject: RFQ.URGENT ORDER 9065001
Attachment: ORDER_ENQ0001.doc

Intelligence

File Origin
# of uploads :
2
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ORDER_ENQ0001.doc
Verdict:
Malicious activity
Analysis date:
2021-02-04 06:50:01 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/8750b1b1-4185-4d01-a1ee-9cbda00c2982

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):
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
Creating a file in the %AppData% subdirectories
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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/81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200/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/598750
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 that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Multi AV Scanner detection for domain / URL
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: 348405 Sample: ORDER_ENQ0001.doc Startdate: 04/02/2021 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Multi AV Scanner detection for domain / URL 2->56 58 Found malware configuration 2->58 60 8 other signatures 2->60 8 EQNEDT32.EXE 11 2->8         started        13 KfWhI.exe 12 1 2->13         started        15 KfWhI.exe 2->15         started        17 2 other processes 2->17 process3 dnsIp4 46 tunedinblog.com 150.95.81.183, 49167, 80 GMO-Z-COM-THGMO-ZcomNetDesignHoldingsCoLtdSG Singapore 8->46 38 C:\Users\user\AppData\...\bigmanx8419.scr, PE32 8->38 dropped 40 C:\Users\user\AppData\...\bigmanx[1].scr, PE32 8->40 dropped 70 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->70 19 bigmanx8419.scr 12 1 8->19         started        72 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 13->72 74 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 13->74 76 Hides threads from debuggers 13->76 78 Injects a PE file into a foreign processes 13->78 23 cmd.exe 13->23         started        25 KfWhI.exe 13->25         started        file5 signatures6 process7 dnsIp8 44 193.239.147.103, 49168, 49169, 49171 DEDIPATH-LLCUS Brunei Darussalam 19->44 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->64 66 Hides threads from debuggers 19->66 68 2 other signatures 19->68 27 bigmanx8419.scr 1 4 19->27         started        32 cmd.exe 19->32         started        34 timeout.exe 23->34         started        signatures9 process10 dnsIp11 48 smtp.enttramas.com 27->48 50 us2.smtp.mailhostbox.com 208.91.198.143, 49174, 587 PUBLIC-DOMAIN-REGISTRYUS United States 27->50 52 208.91.199.224, 49170, 49172, 49173 PUBLIC-DOMAIN-REGISTRYUS United States 27->52 42 C:\Users\user\AppData\Roaming\...\KfWhI.exe, PE32 27->42 dropped 80 Tries to steal Mail credentials (via file access) 27->80 82 Tries to harvest and steal ftp login credentials 27->82 84 Tries to harvest and steal browser information (history, passwords, etc) 27->84 86 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->86 36 timeout.exe 32->36         started        file12 signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-04 06:46:12 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhpcucbyidfdxdt735ms6elkbkcmkbbdgxjpmpamjotwc34yoiaa._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210204-2ggfnl9r5x/
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
Program crash
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
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/81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
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.
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

AgentTesla

Word file doc 81de2a083840ca3b8e7fdf592f116a0a84c5042335d2f63c0c4ba7616f987200

(this sample)

  
Delivery method
Distributed via e-mail attachment

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