MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7
SHA3-384 hash: 372d58a006f9c700002b9042f24d37f50d91531457995f20bc8cbf04df89fa088a78a8d197ca4fe04cd7fc57bf6a0591
SHA1 hash: 33a43958802cccb938be6d196b2cd7db9ea11137
MD5 hash: 72c7b01771ea8cf546b0115ad0c7c9b1
humanhash: cola-london-emma-pluto
File name:airwaybill # 6913321715.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'026'560 bytes
First seen:2021-09-03 04:56:06 UTC
Last seen:2021-09-03 12:53:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:PigPiF84DtPASSVdYiO5GpS4u6C5oWpf0y3k0Vb/AElj8iDxLBYR1p2Z3+Xf6Me6:DFOVKEMPlcR2IFSmnmx
Threatray 9'390 similar samples on MalwareBazaar
TLSH T14825EF3DAD6626339FAAB67CD4E6194EE79410EB13714DE9C1E2B38C2007513B6DA31C
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
232
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
airwaybill # 6913321715.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-03 04:59:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8bbccaa1-551b-4432-ac5c-de085f9b7dea

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/185008/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/df981984-c06a-44df-86b6-cf337cfeae61
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/844512
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 476943 Sample: airwaybill # 6913321715.exe Startdate: 03/09/2021 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 Yara detected AgentTesla 2->41 43 7 other signatures 2->43 6 airwaybill # 6913321715.exe 3 2->6         started        9 nwlrFL.exe 3 2->9         started        12 nwlrFL.exe 2 2->12         started        process3 file4 21 C:\Users\...\airwaybill # 6913321715.exe.log, ASCII 6->21 dropped 14 airwaybill # 6913321715.exe 2 5 6->14         started        45 Multi AV Scanner detection for dropped file 9->45 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 9->47 49 Machine Learning detection for dropped file 9->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 9->51 19 nwlrFL.exe 2 9->19         started        signatures5 process6 dnsIp7 27 us2.smtp.mailhostbox.com 208.91.199.224, 49716, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->27 23 C:\Users\user\AppData\Roaming\...\nwlrFL.exe, PE32 14->23 dropped 25 C:\Users\user\...\nwlrFL.exe:Zone.Identifier, ASCII 14->25 dropped 29 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->29 31 Tries to steal Mail credentials (via file access) 14->31 33 Tries to harvest and steal ftp login credentials 14->33 35 2 other signatures 14->35 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-02 21:28:21 UTC
AV detection:
10 of 28 (35.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=55swohcgrejqk2fd6d5awsmhpb3qpibxkax34ggedggohtzwlwtq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
3b328b4944780b2e55f490e655a556978f0f6bacc57cdd01d06ea65258d58208
AgentTesla
58c0584a80bf12518e17cc0d734866ea52b11a33a8b3bf8ed945c846348cb046
AgentTesla
782e7733c4659faba3d7766cf5e7dcd20e6d6173180ec9d07edb15ed9ec8f6b9
AgentTesla
8078c7e3b89bfcf0eca7583b3a0509bddc7c83b6aeee05a81262946f5c011ca8
AgentTesla
fa88c9d7dcfac75ae440673f335e4da8faba4c9fe4d500ae5de053425e69910e
AgentTesla
+ 9'380 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210903-fksghacaf9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
f34e51a9e9c2d4b775aa42d25ee73c62173abdcfb09815d2358e26b35b0b25dc
MD5 hash:
4d8b18a54d1b066d83b2b0fa8a320268
SHA1 hash:
f86bb791b49dd1b2c85354df3639b461801df5b9
Link:
https://www.unpac.me/results/6088d5ec-91e7-4b3b-b8fd-03163476d47e/
SH256 hash:
2bf7b067427a8f6ca4a99df51614edb83b57fda25a95573993a382f0c1b87210
MD5 hash:
c83b8d6119508ef1f1a283722dc5ce39
SHA1 hash:
c427de832f2514b322fdefc1007c82fb9bd00d52
Link:
https://www.unpac.me/results/6088d5ec-91e7-4b3b-b8fd-03163476d47e/
SH256 hash:
4eb1cca26d7eb2e9726e2cd491078440c48c51cbbd46eaa3fcee7020bf36f0c4
MD5 hash:
abfca73c0ddbf5abbf177570a2201765
SHA1 hash:
8d2f991a21084dc0e8f7b050d2ebd29475c7a735
Link:
https://www.unpac.me/results/6088d5ec-91e7-4b3b-b8fd-03163476d47e/
SH256 hash:
ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7
MD5 hash:
72c7b01771ea8cf546b0115ad0c7c9b1
SHA1 hash:
33a43958802cccb938be6d196b2cd7db9ea11137
Link:
https://www.unpac.me/results/6088d5ec-91e7-4b3b-b8fd-03163476d47e/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ef65671c4689/report/overview.html
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/ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

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

Malspam

AgentTesla

Executable exe ef65671c4689130568a3f0fa0b4987787707a037502fbe18c4198ce3cf365da7

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/185008/

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