MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1ff26ffe5d8d0a87d1a8bd33bf4a8deb427e6c83af241fcf8a798bd489f99254. 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: 10


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

SHA256 hash: 1ff26ffe5d8d0a87d1a8bd33bf4a8deb427e6c83af241fcf8a798bd489f99254
SHA3-384 hash: af4db817b0b203a02ab692da84b248dc67a4fd59c106b6e310d9cde10358c4f3d4d530dfb8ed361d810112b257789789
SHA1 hash: 9a087ace4ccd0949b3f3b990da5b8455d915963c
MD5 hash: 137a92487c3f13475512f0257dd7466e
humanhash: carolina-indigo-mexico-bravo
File name:attached.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:585'216 bytes
First seen:2020-08-31 05:26:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:gHz3AGh0VHdUNpP8X5d3lG1B289mBmR/7lQLhJlgszEqVC/KMNGx6eDiDC60hp73:sUCdY3lGb2S/0DzE+iGx
Threatray 10'351 similar samples on MalwareBazaar
TLSH 71C4232313AD9BDBEAF603F1191D345DD770561BE41CC2CEAAE473A692633918373A12
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
83
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53221/
Detection(s):
SecuriteInfo.com.W32.Trojan-7.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/454800
Signature
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 (e.g. based on Emerging Threat rules)
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 access)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279773 Sample: attached.exe Startdate: 31/08/2020 Architecture: WINDOWS Score: 100 53 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->53 55 Found malware configuration 2->55 57 Multi AV Scanner detection for submitted file 2->57 59 4 other signatures 2->59 8 attached.exe 1 2->8         started        12 lVXwq.exe 2->12         started        14 lVXwq.exe 1 2->14         started        process3 file4 43 C:\Users\user\AppData\...\attached.exe.log, ASCII 8->43 dropped 73 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->73 75 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->75 16 attached.exe 2 5 8->16         started        21 attached.exe 8->21         started        23 lVXwq.exe 2 12->23         started        77 Multi AV Scanner detection for dropped file 14->77 25 lVXwq.exe 2 14->25         started        27 lVXwq.exe 14->27         started        signatures5 process6 dnsIp7 45 smtp.ph1cool.com 16->45 47 us2.smtp.mailhostbox.com 208.91.199.223, 49728, 587 PUBLIC-DOMAIN-REGISTRYUS United States 16->47 37 C:\Users\user\AppData\Roaming\...\lVXwq.exe, PE32 16->37 dropped 39 C:\Users\user\...\lVXwq.exe:Zone.Identifier, ASCII 16->39 dropped 61 Modifies the hosts file 16->61 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->63 29 reg.exe 16->29         started        49 208.91.199.224, 49731, 587 PUBLIC-DOMAIN-REGISTRYUS United States 23->49 51 smtp.ph1cool.com 23->51 41 C:\Windows\System32\drivers\etc\hosts, ASCII 23->41 dropped 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->65 67 Tries to steal Mail credentials (via file access) 23->67 69 Tries to harvest and steal ftp login credentials 23->69 71 Tries to harvest and steal browser information (history, passwords, etc) 23->71 31 reg.exe 23->31         started        file8 signatures9 process10 process11 33 conhost.exe 29->33         started        35 conhost.exe 31->35         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1ff26ffe5d8d0a87d1a8bd33bf4a8deb427e6c83af241fcf8a798bd489f99254/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 02:49:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=d7zg77s5rufipunixuz36sun5nbh43edv4sb7t4kpgf5jcpzsjka._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
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AgentTesla
1df1597314ab01b00a84f5a025cb5112828d20fbc59dd3098fcb45fb88534661
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7ca8232e7c1412239e7ae183a33a8546097b37a1ca2fd03d068472f6ad7021c6
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b250144e3bf196501c5064576d34ff66398323d7862e957f359a263d7a0c3636
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bf16393640303afe03a092d605a39a69d05158bce15d690128ef2b2103dfa5c7
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d4eec3387fde66fc5b45135db86b9fcdebcb75e199fe9be1a834d89cac6b9d13
AgentTesla
e738d23963c1001eb3cc3287fd96bacb4a4f073c665c866bc3cadf39d71350e8
AgentTesla
+ 10'341 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200831-kx8yqshjaj/
Behaviour
Modifies registry key
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
Drops file in Drivers directory
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/1ff26ffe5d8d0a87d1a8bd33bf4a8deb427e6c83af241fcf8a798bd489f99254

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

AgentTesla

zip 6dba55bc064b3c4423cf8c017779712f95f530085f88c6e66454fdf4d4ad6121

AgentTesla

Executable exe 1ff26ffe5d8d0a87d1a8bd33bf4a8deb427e6c83af241fcf8a798bd489f99254

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 6dba55bc064b3c4423cf8c017779712f95f530085f88c6e66454fdf4d4ad6121
Cape
Cape
https://www.capesandbox.com/analysis/53221/

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