MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5
SHA3-384 hash: e9ee5f87da3ea9a4c71d509df9f196034d3eb4ff58e120a4cdc53ac596ca76500343376ca94c9cad87780ae5ccbddbed
SHA1 hash: 64f4ebba20fbc8744c635392316aa3ee3e6b0836
MD5 hash: 054d7f522fdd0c43ce782bf05810a023
humanhash: ohio-nineteen-robert-mars
File name:DTDC EXPRESS LTD..doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:376'621 bytes
First seen:2020-12-21 07:47:13 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:imOxvEBcXIO4ZXYSpzzgY+Gh3Em/9Pjc5QHPqUytu6on6VTPIDlQEnOx1k8TQY:immvKcXIJZomk7wNc5QvqUyF/TQDJOxn
TLSH 3884AFB876047DE6266F536BDA96ACDD13B61A62DECBA4CC4074B7C305A3335EF02805
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: mail.richermoren.tk
Sending IP: 5.8.93.139
From: kizit@richermoren.tk
Subject: Request For Urgent Quote- DTDC EXPRESS LTD.
Attachment: DTDC EXPRESS LTD..doc

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DTDC EXPRESS LTD..doc
Verdict:
Malicious activity
Analysis date:
2020-12-21 07:48:19 UTC
Tags:
exploit CVE-2017-11882 loader keylogger stealer agenttesla
Link:
https://app.any.run/tasks/9aa9d8e0-7d05-4858-8f54-4d0680ce92b0

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

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._EQUATION.200422.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
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5/results/dashboard
Result
Gathering data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/567223
Signature
.NET source code contains very large strings
Binary contains a suspicious time stamp
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 332698 Sample: DTDC EXPRESS LTD..doc Startdate: 21/12/2020 Architecture: WINDOWS Score: 100 34 Yara detected AgentTesla 2->34 36 Yara detected AntiVM_3 2->36 38 Sigma detected: EQNEDT32.EXE connecting to internet 2->38 40 7 other signatures 2->40 8 EQNEDT32.EXE 11 2->8         started        13 WINWORD.EXE 336 20 2->13         started        15 EQNEDT32.EXE 2->15         started        process3 dnsIp4 28 miratechs.tk 46.173.221.33, 49167, 80 GPI-ASRU Russian Federation 8->28 24 C:\Users\user\AppData\Roaming\ugopx7123.exe, PE32 8->24 dropped 26 C:\Users\user\AppData\...\ugopoundz[1].exe, PE32 8->26 dropped 42 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->42 17 ugopx7123.exe 1 18 8->17         started        file5 signatures6 process7 signatures8 30 Machine Learning detection for dropped file 17->30 32 Injects a PE file into a foreign processes 17->32 20 ugopx7123.exe 2 17->20         started        process9 process10 22 dw20.exe 2 20->22         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-12-21 07:48:07 UTC
AV detection:
23 of 47 (48.94%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vshrkykb736lmx4udphu5ro52xdywi4io6ftvgzothhl25kp36sq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/201221-9cbn1dgjt2/
Behaviour
Suspicious use of WriteProcessMemory
Checks processor information in registry
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
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5

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 ac8f156141fefcb65f941bcf4ec5ddd5c78b2388778b3a9b2e99cebd754fdfa5

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments