MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef1a36dd9eccaee911c3a67485284eb8c91ec3135e40ad4fdc0e13259120fb9c. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
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SHA256 hash: ef1a36dd9eccaee911c3a67485284eb8c91ec3135e40ad4fdc0e13259120fb9c
SHA3-384 hash: 8357ea7d9ae7df773736db94a9893f3445652526d5f1f75ed656237d066a67a5e69d70fe9b218494dd4db7ca5c464f8d
SHA1 hash: d431f6cef164522db1a2b4dece7f755d538f1777
MD5 hash: 373bb93b219b734c7fffb14e6b22e417
humanhash: asparagus-hawaii-xray-delta
File name:I210820-0002 D1隨機-海關發票-R1_pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:502'272 bytes
First seen:2021-09-14 08:38:04 UTC
Last seen:2021-09-14 10:12:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:a1Ek4DbF53e0IUFL0H8UN+f93V5+hAVSTObyi:lIH8Uo3VQhAZB
Threatray 9'805 similar samples on MalwareBazaar
TLSH T18BB4AE242DFB5029F1B3AFB55EE475868A6FB6733A17E85C148003864B23B41DD91B3B
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
228
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
I210820-0002 D1隨機-海關發票-R1_pdf.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-14 08:42:45 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c78514e9-3aa6-4549-ab17-997cebb1e537

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.5289.4921.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61750d8ea9d585e6d5370d58/reports/29742d27-6e2b-46c2-ba31-8314b58df1f3/overview
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/17f85d9d-3689-4d8c-9bc0-ab5fd0ba3951
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/850534
Signature
.NET source code contains potential unpacker
.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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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 AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 482968 Sample: I210820-0002 D1#U96a8#U6a5f... Startdate: 14/09/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 Yara detected AgentTesla 2->43 45 8 other signatures 2->45 6 I210820-0002 D1#U96a8#U6a5f-#U6d77#U95dc#U767c#U7968-R1_pdf.exe 3 2->6         started        9 guBRet.exe 3 2->9         started        12 guBRet.exe 2 2->12         started        process3 file4 23 I210820-0002 D1#U9...7968-R1_pdf.exe.log, ASCII 6->23 dropped 14 I210820-0002 D1#U96a8#U6a5f-#U6d77#U95dc#U767c#U7968-R1_pdf.exe 2 5 6->14         started        47 Multi AV Scanner detection for dropped file 9->47 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 9->49 51 Machine Learning detection for dropped file 9->51 53 2 other signatures 9->53 19 guBRet.exe 2 9->19         started        21 guBRet.exe 2 12->21         started        signatures5 process6 dnsIp7 29 mail.renlk.me 198.54.115.133, 26, 49778 NAMECHEAP-NETUS United States 14->29 25 C:\Users\user\AppData\Roaming\...\guBRet.exe, PE32 14->25 dropped 27 C:\Users\user\...\guBRet.exe:Zone.Identifier, ASCII 14->27 dropped 31 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->31 33 Moves itself to temp directory 14->33 35 Tries to steal Mail credentials (via file access) 14->35 37 3 other signatures 14->37 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef1a36dd9eccaee911c3a67485284eb8c91ec3135e40ad4fdc0e13259120fb9c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-14 02:06:31 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=54ndnxm6zsxoseoduz2ikkcoxder5qytlzak2t64byjsleja7ooa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
08b64b4bd7191df64c3b46ef1bb57044cabbafcf80588395742c4532dd63fe6d
AgentTesla
30eab9d2e4ce9e7ad88c6b0206c4d608579d4043ff7f308aa7ab790bf0e24b50
AgentTesla
6ce6f3e5ed0decba840832247a7ce597eb367c8448ea16f82141781feddaf4be
AgentTesla
6f8710e6b6e1995fa20b77cc67c0b06adc292fb8b0a37a827d5155795628e1f4
AgentTesla
7745cfb5dad2fb66719dee21d97d1eabe67eeacf17b4684af8fe67aa5ed0bb96
AgentTesla
ee8beab97d0173c58d30bb6bfc16425b455bed9037274cece47f806e571f1599
AgentTesla
f84cc4838c3d9bacdaa67c1b7e658b8b59dd8e9db2ad1be06f5218defd2c1070
AgentTesla
+ 9'795 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/210914-kjqzhaadbj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
f0ceb5b1aa02d108e14ba8994bb107355197ed1e26f3cfff880a15467465a2c8
MD5 hash:
b8ef87e6d5a3cb3514c4bf0327d5f55a
SHA1 hash:
ea7e7909672535dd80b871e3d42d899939c7890b
Link:
https://www.unpac.me/results/104f9e9b-7ffc-4eee-a9ce-c60e8831b859/
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/104f9e9b-7ffc-4eee-a9ce-c60e8831b859/
SH256 hash:
9247e8688f4ef08bea0a48aae32d035c121b8f78c0b50cdc0eeffa2fbacd681c
MD5 hash:
e2c6ab4f49ff24047ffe8d42e50a16f1
SHA1 hash:
1fd44521a230596015e6a040e6d448353429590c
Link:
https://www.unpac.me/results/104f9e9b-7ffc-4eee-a9ce-c60e8831b859/
SH256 hash:
ef1a36dd9eccaee911c3a67485284eb8c91ec3135e40ad4fdc0e13259120fb9c
MD5 hash:
373bb93b219b734c7fffb14e6b22e417
SHA1 hash:
d431f6cef164522db1a2b4dece7f755d538f1777
Link:
https://www.unpac.me/results/104f9e9b-7ffc-4eee-a9ce-c60e8831b859/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ef1a36dd9ecc/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/ef1a36dd9eccaee911c3a67485284eb8c91ec3135e40ad4fdc0e13259120fb9c

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:pe_imphash
Create hunting rule
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.

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