MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5912943a6663ba8fe6c8a8d203d53dca13cd1fa5cc51a37b7eed8a658c4d7b05. 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


NanoCore


Vendor detections: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5912943a6663ba8fe6c8a8d203d53dca13cd1fa5cc51a37b7eed8a658c4d7b05
SHA3-384 hash: 0ddf2affe82ed5859af3990f89e74eded1a6f06592a12217f64c4e340b8026397862188e1737d6f21833e29d6087c88e
SHA1 hash: bd252e549798f26df84e81939d89208153888276
MD5 hash: b1bd988d11c5d3b3d6ee8084f9a27b91
humanhash: stream-lake-carolina-seventeen
File name:invoice.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:496'640 bytes
First seen:2020-08-12 07:24:44 UTC
Last seen:2020-08-12 07:58:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:0IGb10DEmRg5MlSVzERwYg+p+8xaRErUqTJ:c10DEVsRp+82ETJ
Threatray 10'636 similar samples on MalwareBazaar
TLSH 55B4025BF684525DCD2D8AB8C163D06CC26328375C40EB57B8D473AF0B7E2C56A168AF
Reporter cocaman
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
3
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/44003/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.276.9776.23094.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file
Sending a UDP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Enabling autorun
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/421622
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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 steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 263289 Sample: invoice.exe Startdate: 12/08/2020 Architecture: WINDOWS Score: 92 40 Yara detected AgentTesla 2->40 42 .NET source code contains potential unpacker 2->42 44 Executable has a suspicious name (potential lure to open the executable) 2->44 46 3 other signatures 2->46 7 invoice.exe 7 2->7         started        process3 file4 34 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 7->34 dropped 36 C:\Users\user\AppData\...\invoice.exe.log, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 7->38 dropped 50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->50 52 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->52 54 Injects a PE file into a foreign processes 7->54 11 invoice.exe 2 7->11         started        14 cmd.exe 1 7->14         started        16 cmd.exe 3 7->16         started        19 cmd.exe 1 7->19         started        signatures5 process6 file7 56 Tries to steal Mail credentials (via file access) 11->56 58 Tries to harvest and steal browser information (history, passwords, etc) 11->58 21 reg.exe 1 1 14->21         started        24 conhost.exe 14->24         started        30 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 16->30 dropped 26 conhost.exe 16->26         started        32 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 19->32 dropped 28 conhost.exe 19->28         started        signatures8 process9 signatures10 48 Creates an undocumented autostart registry key 21->48
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5912943a6663ba8fe6c8a8d203d53dca13cd1fa5cc51a37b7eed8a658c4d7b05/
Threat name:
ByteCode-MSIL.Trojan.SmartAssembly
Create hunting rule
Status:
Malicious
First seen:
2020-08-03 22:59:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
35 of 48 (72.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lejjiotgmo5i7zwivdjahvj5zij42h5fzri2g6365wfgldcnpmcq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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dd5712ad571847f064a5dfcd49ee82e3d2b42959bef23a773512dc41af030f6e
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e0990a2ff0ebf0bf66d3ecc4f2778ec3e833e6158dbd22bc2d7b914cba6cff88
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ecaee87e2c04c3020500456fd645779646b60edd0d2481c54f67fa9e14c365f0
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f5f9766b693142ae58adab4bd6f0e1491994de6e9c5d605e655e0e2ef507a46f
NanoCore
+ 10'626 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200812-8b4l3wzecn/
Behaviour
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5912943a6663ba8fe6c8a8d203d53dca13cd1fa5cc51a37b7eed8a658c4d7b05

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: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

NanoCore

zip e47b75248bf182e69609a841aa57157f72ea0fd3eea4e104b9d3f2de1e2bea99

NanoCore

Executable exe 5912943a6663ba8fe6c8a8d203d53dca13cd1fa5cc51a37b7eed8a658c4d7b05

(this sample)

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/44003/
  
Dropped by
SHA256 e47b75248bf182e69609a841aa57157f72ea0fd3eea4e104b9d3f2de1e2bea99

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