MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f. 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: 6


Intelligence 6 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f
SHA3-384 hash: 9b1ea7bd8ca5aeb2137549c6d45a439b65cbd80f71a74e7552c1875fa3c3f892d92cfb5ad366799d7faa9794a9cf8e7c
SHA1 hash: d6c174ad8429bf9c52aa3e804f472976cfbb6afe
MD5 hash: a49efd9ffb5e0ca31315173cc7e90e83
humanhash: cold-finch-summer-angel
File name:Packing material requirement-Morya (PO No S14123).rar
Download: download sample
Signature AgentTesla
Create hunting rule
File size:609'629 bytes
First seen:2023-10-04 11:47:31 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 12288:/QyTtAChZs2ysj5W2//2s1r7LVNQLiUz9qyBMNeRb8V7:/TtZpT//x17xUzgyBMB7
TLSH T11AD4236371F2D4D006CA245682C8BB161CCFF57A334BD93D977B622570DABCC5AAA027
TrID 58.3% (.RAR) RAR compressed archive (v-4.x) (7000/1)
41.6% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:AgentTesla rar


Avatar
cocaman
Malicious email (T1566.001)
From: "Dr.-Ing. Alexander Zelck<mrsea@charter.net>" (likely spoofed)
Received: "from charter.net (unknown [45.137.22.123]) "
Date: "4 Oct 2023 12:39:23 +0200"
Subject: "Re: Packing material requirement-Morya (PO No S14123)"
Attachment: "Packing material requirement-Morya (PO No S14123).rar"

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Packing material requirement-Morya (PO No S14123).exe
File size:653'312 bytes
SHA256 hash: 988ed9d6f58307ca4d5d42471240d5fbc37f31b5bc0e1007869ffc22f12571b2
MD5 hash: 4b07c8ee37ced0b916bfb2a6dec89a86
MIME type:application/x-dosexec
Signature AgentTesla
Vendor Threat Intelligence
Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f/results/dashboard
Gathering data
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-10-04 04:22:06 UTC
File Type:
Binary (Archive)
Extracted files:
21
AV detection:
19 of 36 (52.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mn7phhhud3wf3sicxunz3ijnhg67vxmiyg3drc437pijqfmzzzxq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/231004-q6ywhscb41/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Reads user/profile data of web browsers
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/637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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

rar 637ef39cf41eec5dc902bd1b9da12d39bdfadd88c1b6388b9bfbd0981599ce6f

(this sample)

AgentTesla

Executable exe 988ed9d6f58307ca4d5d42471240d5fbc37f31b5bc0e1007869ffc22f12571b2

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 988ed9d6f58307ca4d5d42471240d5fbc37f31b5bc0e1007869ffc22f12571b2
  
Dropping
AgentTesla

Comments