MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89
SHA3-384 hash: 8a688336fb2a9b83600fbe540ed36d1fd6b96d882b64f3127dc90ffee561ff2a02e474c4b221e6b8d8689ee2a6d5aa19
SHA1 hash: 4d839bab255b44e3aa69540bc592f3e2ecd605f8
MD5 hash: 90717fa27d34bce473affdeb3946837b
humanhash: river-monkey-glucose-lake
File name:TT.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:36'600 bytes
First seen:2021-02-22 19:13:57 UTC
Last seen:2021-02-22 20:30:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 384:gG9lOKJVe0fmjfAadOxO7CbERvQG9363kG2P8fkzlAQSDqdDqBDq7ahu:flpJ80mjInbIXB6UG2QeAQQhu
TLSH 74F2098644A67D24E5A305762CF1F9743B2C93719450D10EB012A1ADCB87BEF20DEDEE
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: ns1.municipioteo.pw
Sending IP: 104.168.146.163
From: Mookarin Thaweephot <ap@municipioteo.pw>
Subject: RE: Remittance
Attachment: TT.7z (contains "TT.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
151
Origin country :
n/a
Vendor Threat Intelligence
Detection:
DLAgent06
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118395/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DGB.genEldorado.26009.18169.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Launching a service
Deleting a recently created file
Launching a process
Creating a file in the Windows subdirectories
Creating a window
Creating a file
Setting a single autorun event
Blocking the User Account Control
Adding exclusions to Windows Defender
Enabling autorun by creating a file
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/614497
Signature
Adds a directory exclusion to Windows Defender
Binary contains a suspicious time stamp
Creates an autostart registry key pointing to binary in C:\Windows
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Multi AV Scanner detection for dropped file
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 356257 Sample: TT.exe Startdate: 22/02/2021 Architecture: WINDOWS Score: 84 82 Binary contains a suspicious time stamp 2->82 84 Sigma detected: System File Execution Location Anomaly 2->84 86 Adds a directory exclusion to Windows Defender 2->86 88 Sigma detected: Suspicious Svchost Process 2->88 8 TT.exe 23 12 2->8         started        13 explorer.exe 2->13         started        15 explorer.exe 2->15         started        17 7 other processes 2->17 process3 dnsIp4 70 coroloboxorozor.com 172.67.172.17, 49721, 49738, 80 CLOUDFLARENETUS United States 8->70 72 192.168.2.1 unknown unknown 8->72 58 C:\Windows\Microsoft.NET\...\svchost.exe, PE32 8->58 dropped 60 C:\Windows\...\svchost.exe:Zone.Identifier, ASCII 8->60 dropped 62 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 8->62 dropped 64 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 8->64 dropped 90 Creates an autostart registry key pointing to binary in C:\Windows 8->90 92 Adds a directory exclusion to Windows Defender 8->92 94 Drops PE files with benign system names 8->94 19 powershell.exe 23 8->19         started        21 powershell.exe 23 8->21         started        23 AdvancedRun.exe 1 8->23         started        32 2 other processes 8->32 96 Drops executables to the windows directory (C:\Windows) and starts them 13->96 25 svchost.exe 13->25         started        30 svchost.exe 15->30         started        74 127.0.0.1 unknown unknown 17->74 file5 signatures6 process7 dnsIp8 34 conhost.exe 19->34         started        36 conhost.exe 21->36         started        38 AdvancedRun.exe 23->38         started        76 coroloboxorozor.com 25->76 66 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 25->66 dropped 98 System process connects to network (likely due to code injection or exploit) 25->98 100 Adds a directory exclusion to Windows Defender 25->100 40 AdvancedRun.exe 25->40         started        42 powershell.exe 25->42         started        44 powershell.exe 25->44         started        78 104.21.71.230, 49734, 80 CLOUDFLARENETUS United States 30->78 80 coroloboxorozor.com 30->80 68 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 30->68 dropped 102 Multi AV Scanner detection for dropped file 30->102 46 AdvancedRun.exe 30->46         started        48 conhost.exe 32->48         started        50 AdvancedRun.exe 32->50         started        file9 signatures10 process11 process12 52 AdvancedRun.exe 40->52         started        54 conhost.exe 42->54         started        56 AdvancedRun.exe 46->56         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89/
Threat name:
ByteCode-MSIL.Downloader.BaseLoader
Create hunting rule
Status:
Malicious
First seen:
2021-02-22 19:14:10 UTC
AV detection:
14 of 29 (48.28%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vcu4win6smchwir33egxihm6vpo6bujhf5zy6tdeoihfzlhk72eq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion persistence trojan
Link:
https://tria.ge/reports/210222-t8vqwtgblx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Drops file in Windows directory
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Windows security modification
Executes dropped EXE
Nirsoft
Modifies Windows Defender Real-time Protection settings
Turns off Windows Defender SpyNet reporting
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89
MD5 hash:
90717fa27d34bce473affdeb3946837b
SHA1 hash:
4d839bab255b44e3aa69540bc592f3e2ecd605f8
Link:
https://www.unpac.me/results/739a6e5a-c2e0-4183-9ca9-64f803b1ec51/
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/a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89

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_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

AgentTesla

7z d39609d1e799545fc5b2410672d16f7777d341fe3e348e9a542e181e4d84f4ea

AgentTesla

Executable exe a8a9cb21be93047b223bd90d741d9eabdde0d1272f738f4c64720e5caceafe89

(this sample)

  
Dropped by
MD5 027b568e2b8a872ffe001a3e3709ef05
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/118395/
  
Dropped by
SHA256 d39609d1e799545fc5b2410672d16f7777d341fe3e348e9a542e181e4d84f4ea

Comments