MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed. 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: 8


Intelligence 8 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed
SHA3-384 hash: 10c9cc477d68893df9241c29cee093e45a15eb925da5057d1033d842ac2d688b3569cc49625f565a4f47eabaf67fc7d5
SHA1 hash: 4ad6b9cbadb3c2a24fbddc60071ee09bf767fe19
MD5 hash: ad8f7af7e87924a654737af0568e43cb
humanhash: alanine-sink-beryllium-low
File name:invoice1 8b00649.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:294'400 bytes
First seen:2021-04-28 14:55:02 UTC
Last seen:2021-04-28 15:14:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:qij1Ln0UWMcXoKHFO28LlxAVQ/aK7QhRj:jVndWMWHb8LQVQCNhRj
Threatray 40 similar samples on MalwareBazaar
TLSH 7554F100BF68F461C60A05F6AE77D6DC05306F24FE398767781A364E7371BB4A62A360
Reporter cocaman
Tags:AgentTesla exe INVOICE

Intelligence

File Origin
# of uploads :
2
# of downloads :
63
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice1 8b00649.exe
Verdict:
No threats detected
Analysis date:
2021-04-28 14:58:57 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/aca03df4-0b2d-4eb2-ade9-f0c96126653d

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/145024/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Trojan.cc.27073.14548.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a window
Creating a process with a hidden window
Result
Verdict:
MALICIOUS
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:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/700813
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Executable has a suspicious name (potential lure to open the executable)
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
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 detect sandboxes and other dynamic analysis tools (process name or module or function)
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 399326 Sample: invoice1 8b00649.exe Startdate: 28/04/2021 Architecture: WINDOWS Score: 100 55 Found malware configuration 2->55 57 Multi AV Scanner detection for dropped file 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 7 other signatures 2->61 8 invoice1 8b00649.exe 3 8 2->8         started        11 MSword.exe 2->11         started        14 MSword.exe 2->14         started        process3 file4 39 C:\Users\user\...\invoice1 8b00649.exe, PE32 8->39 dropped 41 C:\...\invoice1 8b00649.exe:Zone.Identifier, ASCII 8->41 dropped 43 C:\Users\user\...\invoice1 8b00649.exe.log, ASCII 8->43 dropped 45 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 8->45 dropped 16 invoice1 8b00649.exe 2 5 8->16         started        20 wscript.exe 1 8->20         started        22 AdvancedRun.exe 1 8->22         started        25 AdvancedRun.exe 1 8->25         started        63 Multi AV Scanner detection for dropped file 11->63 signatures5 process6 dnsIp7 35 C:\Users\user\AppData\Roaming\...\MSword.exe, PE32 16->35 dropped 37 C:\Users\user\...\MSword.exe:Zone.Identifier, ASCII 16->37 dropped 49 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->49 51 Wscript starts Powershell (via cmd or directly) 20->51 53 Adds a directory exclusion to Windows Defender 20->53 27 powershell.exe 20 20->27         started        47 192.168.2.1 unknown unknown 22->47 29 AdvancedRun.exe 22->29         started        31 AdvancedRun.exe 25->31         started        file8 signatures9 process10 process11 33 conhost.exe 27->33         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-04-28 02:34:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
39
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tejfn6z7r2ud3gbjj3mrri4b3mx7ukmgtz2c5k54dphw2umukpwq._file
Verdict:
unknown
Similar samples:
411a64366a6b5b9e57bd06dcdccd377ea02d9ed7e8be0f290f0674e3d7ff3215
AgentTesla
588692919a751e9852cf32e0b1da42c347f2ff99a2afd2378c6a7573d7a532fc
AgentTesla
873361a4ca66642d8749033b0cb0454a88919c4dbb1555447de234097f8738a3
AgentTesla
9db40f7f060e08b2891dc881c6f6d1ea165b56747b4302fd96e53d8bd194d8d5
AgentTesla
a425f34863ba2e720f7a2af8525132ba97d19a3439947ecd028d8620897e7f2b
AgentTesla
a5c9be9bcb214e69a39285a634f95e43fdf1ad10536bcc9bce84be7edb48cb31
AgentTesla
b33514e7b334b8aee694323114c7d2694f3cdb49c7614291ca8f064c23ff8542
AgentTesla
ccc0390af8ad285929138e6c2ac4a5b4a9634e1d174cef926cfc0fc62287f10a
AgentTesla
ed9d96725b88ce0a3caee6d98c11369fb84a1d7eca3847db66abe63c49955f73
AgentTesla
fd03c87d6385f3d86400245902c821b496f603105887a05f67eb6948f4c5c085
AgentTesla
+ 30 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/210428-xy1yrvane2/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
AgentTesla Payload
Nirsoft
AgentTesla
Unpacked files
SH256 hash:
03e1d932c380d05cdf79244f8d0f83e97f7114a3922a94c5cf04ba1f836c2b30
MD5 hash:
f2e55a701157a0dbdc32ddb38785dac2
SHA1 hash:
de315247f59933f7073957de34a14fc1084f377a
Link:
https://www.unpac.me/results/2feeced5-3534-4506-867c-3e6d91c7da65/
SH256 hash:
190b9fc9173f359fc4a56b40a75cd38e0c1284baa20e2e2c6b1471a2627aeacb
MD5 hash:
378a8394cf19224c58027614cc825824
SHA1 hash:
2bbac9a7d519b801a206c50279c6d029b5c71c55
Link:
https://www.unpac.me/results/2feeced5-3534-4506-867c-3e6d91c7da65/
SH256 hash:
48c71c0b335b891b192ecd56a1222ed1ccd868495590e13d9fa05dcd14940a23
MD5 hash:
bf4af7e5faafbda4b1a066218aee4807
SHA1 hash:
15647901829bd91187c2f666de40bd2548630e52
Link:
https://www.unpac.me/results/2feeced5-3534-4506-867c-3e6d91c7da65/
SH256 hash:
5158d242bdd08785b29d7d24be3163f0ee94351a0f58daa87f0241f505da5415
MD5 hash:
3d9595114df4bbb7b49060387c105d4f
SHA1 hash:
02ed298a1efa7b8a3cfa717ea2f40e7a9dcf9b95
Link:
https://www.unpac.me/results/2feeced5-3534-4506-867c-3e6d91c7da65/
SH256 hash:
991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed
MD5 hash:
ad8f7af7e87924a654737af0568e43cb
SHA1 hash:
4ad6b9cbadb3c2a24fbddc60071ee09bf767fe19
Link:
https://www.unpac.me/results/2feeced5-3534-4506-867c-3e6d91c7da65/
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/991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
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

r00 66278b8fcd836ebffdda546f17e3698e661a5e3e1550ea502b6a95e357036e48

AgentTesla

Executable exe 991256fb3f8ea83d98294ed918a381db2ffa29869e742eabbc1bcf6d519453ed

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 66278b8fcd836ebffdda546f17e3698e661a5e3e1550ea502b6a95e357036e48
Cape
Cape
https://www.capesandbox.com/analysis/145024/

Comments