MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41. 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 2 File information Comments
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SHA256 hash: 8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41
SHA3-384 hash: a68a30326efba8217ebc9c368a534a0d23ed2b56c50b3961122f5aed92c3464e580b5ee780ea89ce208c774f5f145c32
SHA1 hash: d8eea49b5544b3e93ace72c0fa49562b57a66663
MD5 hash: 1ea9f790bfe944f10ca6e164c42dcd8b
humanhash: robert-magnesium-fifteen-green
File name:MT0015879.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:59'904 bytes
First seen:2022-06-02 05:07:53 UTC
Last seen:2022-06-02 12:28:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'793 x AgentTesla, 19'692 x Formbook, 12'274 x SnakeKeylogger)
ssdeep 384:CrdpWnObQo7TA/hbVSRAg+ePNIHRI5DsVPMwrYuJM43nDpJdR8v0OnxONaZDW3ou:CaObn+KEHP/TgSZc5/ELg
Threatray 17'710 similar samples on MalwareBazaar
TLSH T13E43A6A1D28C7CE9D41741F9AC79EA40205AF74A443D4E19B9B7B41AA4B76C334B3E0F
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d8f2e4ccd4d4d4d4 (9 x AgentTesla, 2 x Formbook, 1 x a310Logger)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
320
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
MT0015879.exe
Verdict:
Malicious activity
Analysis date:
2022-06-02 05:10:30 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/488931ec-d4f5-4eeb-a3be-0de5dafbb51c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/276225/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.31332.9821.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Forced system process termination
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
DNS request
Sending a custom TCP request
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Sending an HTTP GET request to an infection source
Unauthorized injection to a system process
Changing the hosts file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6298633c98a5e4f2925c6001/reports/ea296105-acdd-4318-baab-52e276c63a33/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/34f6c137-d4fa-4f31-9e47-902253893d71
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1005497
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus detection for URL or domain
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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)
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 637993 Sample: MT0015879.exe Startdate: 02/06/2022 Architecture: WINDOWS Score: 100 73 Snort IDS alert for network traffic 2->73 75 Found malware configuration 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 7 other signatures 2->79 7 MT0015879.exe 16 7 2->7         started        12 Qmcalzi.exe 2->12         started        14 Qmcalzi.exe 14 4 2->14         started        process3 dnsIp4 69 52.59.30.24, 49713, 49757, 49760 AMAZON-02US United States 7->69 71 192.168.2.1 unknown unknown 7->71 57 C:\Users\user\AppData\Roaming\...\Qmcalzi.exe, PE32 7->57 dropped 59 C:\Users\user\...\Qmcalzi.exe:Zone.Identifier, ASCII 7->59 dropped 61 C:\Users\user\AppData\...\MT0015879.exe.log, ASCII 7->61 dropped 95 Writes to foreign memory regions 7->95 97 Allocates memory in foreign processes 7->97 99 Injects a PE file into a foreign processes 7->99 16 InstallUtil.exe 6 7->16         started        21 cmd.exe 1 7->21         started        23 powershell.exe 18 7->23         started        25 InstallUtil.exe 12->25         started        27 cmd.exe 12->27         started        29 powershell.exe 12->29         started        101 Multi AV Scanner detection for dropped file 14->101 31 cmd.exe 14->31         started        33 powershell.exe 14->33         started        35 InstallUtil.exe 14->35         started        file5 signatures6 process7 dnsIp8 63 smtp.yandex.ru 77.88.21.158, 49758, 49759, 49811 YANDEXRU Russian Federation 16->63 65 smtp.yandex.com 16->65 55 C:\Windows\System32\drivers\etc\hosts, ASCII 16->55 dropped 81 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->81 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->83 85 Tries to steal Mail credentials (via file / registry access) 16->85 93 2 other signatures 16->93 37 conhost.exe 21->37         started        39 timeout.exe 1 21->39         started        41 conhost.exe 23->41         started        67 smtp.yandex.com 25->67 87 Tries to harvest and steal ftp login credentials 25->87 89 Tries to harvest and steal browser information (history, passwords, etc) 25->89 91 Installs a global keyboard hook 25->91 43 conhost.exe 27->43         started        45 timeout.exe 27->45         started        47 conhost.exe 29->47         started        49 conhost.exe 31->49         started        51 timeout.exe 31->51         started        53 conhost.exe 33->53         started        file9 signatures10 process11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-06-02 01:53:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
20 of 26 (76.92%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ra357qbqgkky3bp3c4fm424eyi7mvkknp3ljo3bkub4dv64zxvaq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
5adb4cea36b31385d66787ec1a8b686704e9c85793fb8aec0be8ddd7f12fcd0b
AgentTesla
980b3cbd822808ce9bcf9acf21c0cb4f1ca1106c47e0533e18669ade27f9ccac
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9ecf32d40c78a12f43bad7283ac48a98fcdbe1f8dec70fda7df32396f0b69cbf
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a26ac8ba4ad589f6a327db63edf541cc8ed144d8eca94d3bce140050eca76a81
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c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7
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e32d29de02579a753bbbae6d60fc0c58b09c929a4670b145b3929f627ae67bb2
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f3d81ca279d14ea5e791ac9e1633396d8525c295f0fea702bcfcc11b592c42a5
AgentTesla
+ 17'700 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220602-fsjvbsggck/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Drops file in Drivers directory
AgentTesla
Unpacked files
SH256 hash:
8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41
MD5 hash:
1ea9f790bfe944f10ca6e164c42dcd8b
SHA1 hash:
d8eea49b5544b3e93ace72c0fa49562b57a66663
Link:
https://www.unpac.me/results/a1febd1d-3844-4f64-b2c4-5f9023f228a6/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8837dfc03032/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

AgentTesla

Executable exe 8837dfc03032958d85fb170ace6b84c23ecaa94d7ed6976c2aa0783afb99bd41

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/276225/

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