MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3. 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: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3
SHA3-384 hash: 32194e21d60968855795a159558c0ad460e64ac125788538d1cc23fb278da54bdb5b6a70d81a3a8cbb3a7d72fe66447e
SHA1 hash: 9e5a3bdac03748118da6719fcd391b93a2141253
MD5 hash: 2e0b75b3bd2756818723370f83ec33ba
humanhash: oscar-three-mockingbird-sink
File name:Doc.610270.xls
Download: download sample
Signature AgentTesla
Create hunting rule
File size:389'120 bytes
First seen:2020-08-17 18:04:57 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:dk3hOdsylKlgryzc4bNhZF+E+W2knR+AqmFkM9lz2KE8hBdLVoo5z9Nn/FDC5GVX:g5kMHq/8oo5ztOcVLEP9iYtHliEM9fGa
TLSH F88412A4B2D98A53CA4B2375CCD243D8F622FC62A78383477798F62987323C44E57756
Reporter abuse_ch
Tags:AgentTesla xls


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: "Smart Tech Director"<admin@smarttech.me >
Subject: Re: RFQ MOTORS
Attachment: Doc.610270.xls

AgentTesla payload URL:
http://13.231.151.34/w2/610270.jpg

AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.FormbookClamAVTrivaMurderParty.20200731.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Running batch commands
Launching a process
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a process from a recently created file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/434465
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Downloads files with wrong headers with respect to MIME Content-Type
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Machine Learning detection for sample
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 269613 Sample: Doc.610270.xls Startdate: 18/08/2020 Architecture: WINDOWS Score: 100 44 smtp.yandex.ru 2->44 46 smtp.yandex.com 2->46 50 Document exploit detected (drops PE files) 2->50 52 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->52 54 Yara detected AgentTesla 2->54 56 11 other signatures 2->56 9 EXCEL.EXE 35 42 2->9         started        14 pcalua.exe 1 1 2->14         started        16 pcalua.exe 1 2->16         started        signatures3 process4 dnsIp5 48 13.231.151.34, 49739, 80 AMAZON-02US United States 9->48 40 C:\Users\user\AppData\Local\...\610270[1].jpg, PE32 9->40 dropped 42 C:\Users\Public\svchost32.exe, PE32 9->42 dropped 70 Document exploit detected (creates forbidden files) 9->70 72 Document exploit detected (process start blacklist hit) 9->72 18 svchost32.exe 8 9->18         started        22 splwow64.exe 9->22         started        file6 signatures7 process8 file9 34 C:\Users\user\mhje.exe, PE32 18->34 dropped 36 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 18->36 dropped 38 C:\Users\user\AppData\...\InstallUtil.exe, PE32 18->38 dropped 58 Drops PE files to the user root directory 18->58 60 Tries to detect virtualization through RDTSC time measurements 18->60 24 mhje.exe 18->24         started        27 cmd.exe 1 18->27         started        signatures10 process11 signatures12 62 Writes to foreign memory regions 24->62 64 Allocates memory in foreign processes 24->64 66 Tries to detect virtualization through RDTSC time measurements 24->66 68 Injects a PE file into a foreign processes 24->68 29 reg.exe 1 1 27->29         started        32 conhost.exe 27->32         started        process13 signatures14 74 Creates an autostart registry key pointing to binary in C:\Windows 29->74
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3/
Threat name:
Script-Macro.Downloader.Obfuser
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 18:06:09 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tte23yorsevnxaogydlyahfoxumiyv6bmevrntqgx66sybw32hrq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200817-byey37jc42/
Behaviour
Suspicious Office macro
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

AgentTesla

Excel file xls 9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3

(this sample)

AgentTesla

Executable exe f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767

  
URLhaus
https://urlhaus.abuse.ch/url/435049/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767
  
Dropping
MD5 5a230e681c011c6379d43758202424a3

Comments