MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c83f7fe8f9c56d895c19918cb9b6837315a362bca8dc532d60f2634868c5134. 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


OskiStealer


Vendor detections: 8


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

SHA256 hash: 8c83f7fe8f9c56d895c19918cb9b6837315a362bca8dc532d60f2634868c5134
SHA3-384 hash: 980970fa06ef89eed286fb997ad7e0d3a78998eadd4777555261b5e96260bf4a30d3114bedf201f32c7581c68a03335a
SHA1 hash: c095e8ef4122146f06c00d1e0b9688d3ca5fe053
MD5 hash: d99e4428c25c2ad0ddb0c5df5c45197f
humanhash: nine-ten-single-one
File name:Quation096NA.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:197'384 bytes
First seen:2021-10-21 06:25:46 UTC
Last seen:2021-10-21 07:20:28 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 3072:lfykTnc5d+6Sci9uD2etS0h0CTXYmvFMQ4b1LfL/6wz4oJnnsq2xc150:RWmXADS0hYmuQ4pfIoJnnsjxC0
TLSH T12C144A0BB7916E01C61885FA80DF6F1426F2D6C72173F6462985DAB10F027CDB98DEDA
File icon (PE):PE icon
dhash icon e884030dcedeb4e8 (52 x AgentTesla, 20 x Loki, 6 x Formbook)
Reporter cocaman
Tags:exe OskiStealer


Avatar
cocaman
Malicious email (T1566.001)
From: ""SCOHOOL " <scohool@let.com>" (likely spoofed)
Received: "from let.com (unknown [37.0.10.193]) "
Date: "20 Oct 2021 20:18:16 -0700"
Subject: "Kindly confirm,"
Attachment: "Quation096NA.exe"

Intelligence

File Origin
# of uploads :
3
# of downloads :
172
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/198990/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader43.48417.17158.27720.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a service
Creating a window
Connection attempt to an infection source
Launching a process
Creating a file in the %temp% directory
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
obfuscated overlay packed vobfus
Link:
https://www.filescan.io/uploads/617107fba9d585e6d5313332/reports/90336c5e-66a4-4cc0-bb40-21425a54a8c7/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c80b78b8-db0c-46ea-b5c7-149beb931229
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/874353
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c83f7fe8f9c56d895c19918cb9b6837315a362bca8dc532d60f2634868c5134/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-10-21 06:26:06 UTC
AV detection:
10 of 41 (24.39%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rsb7p7uptrlnrfobtemmxg3ig4yvunrlzkg4kmwwb4tdjbumke2a._file
Verdict:
suspicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/211021-g67zrahhg6/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
8c83f7fe8f9c56d895c19918cb9b6837315a362bca8dc532d60f2634868c5134
MD5 hash:
d99e4428c25c2ad0ddb0c5df5c45197f
SHA1 hash:
c095e8ef4122146f06c00d1e0b9688d3ca5fe053
Link:
https://www.unpac.me/results/eeef5e31-a011-4ef6-b47e-d2c34e4b08b1/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
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.

Malspam

OskiStealer

Executable exe 8c83f7fe8f9c56d895c19918cb9b6837315a362bca8dc532d60f2634868c5134

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropping
OskiStealer
Cape
Cape
https://www.capesandbox.com/analysis/198990/

Comments