MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21. 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: 12


Intelligence 12 IOCs 7 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21
SHA3-384 hash: d57bd1e1d1fd5e8345d39ed0d1febd58df112674a7e58158bd24ed2bd39c45ef441d0a407ed40f6c1ffa4ea3603e07f7
SHA1 hash: 06031a3261528c023af96b026e3f24589a46038c
MD5 hash: b146860b83e4b59ffb07dbbdff9b8e6d
humanhash: wyoming-xray-mexico-maryland
File name:Inv60995fromMicroVet Diagnostics212576.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:709'632 bytes
First seen:2021-08-17 03:36:12 UTC
Last seen:2021-08-17 04:48:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:jVzd4RiawLwA2ligMb9pxEC5HsabLBd4bfTp6MQNSKUnqAUGobngxaRYP:jpqRiawLGiV9pxHGavbUfIxY
Threatray 2'609 similar samples on MalwareBazaar
TLSH T1E9E46CBC3150B9AFD137CD36C4580E15F66068A7A3CBC613E0932559D93D7AAAE402BF
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://zbd.divendesign.in/6.jpg

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://zbd.divendesign.in/6.jpg https://threatfox.abuse.ch/ioc/190813/
http://zbd.divendesign.in/1.jpg https://threatfox.abuse.ch/ioc/190814/
http://zbd.divendesign.in/2.jpg https://threatfox.abuse.ch/ioc/190815/
http://zbd.divendesign.in/3.jpg https://threatfox.abuse.ch/ioc/190816/
http://zbd.divendesign.in/4.jpg https://threatfox.abuse.ch/ioc/190817/
http://zbd.divendesign.in/5.jpg https://threatfox.abuse.ch/ioc/190818/
http://zbd.divendesign.in/7.jpg https://threatfox.abuse.ch/ioc/190819/

Intelligence

File Origin
# of uploads :
2
# of downloads :
163
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Inv60995fromMicroVet Diagnostics212576.exe
Verdict:
Malicious activity
Analysis date:
2021-08-17 03:38:42 UTC
Tags:
trojan stealer vidar loader
Link:
https://app.any.run/tasks/8e95871d-d41c-4713-aa5a-d7b28ec271ed

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/179834/
Detection(s):
SecuriteInfo.com.Variant.Bulz.598676.21188.31291.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
DNS request
Connecting to a non-recommended domain
Connection attempt
Reading critical registry keys
Replacing files
Delayed writing of the file
Running batch commands
Using the Windows Management Instrumentation requests
Searching for the window
Stealing user critical data
Launching a tool to kill processes
Enabling autorun by creating a file
Unauthorized injection to a system process
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:
Unknown
Link:
https://analyze.intezer.com/analyses/43cb722f-2eed-4bbb-ab2d-bfe58135b90d
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/834075
Signature
Antivirus detection for URL or domain
DLL side loading technique detected
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
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 steal Crypto Currency Wallets
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 466505 Sample: Inv60995fromMicroVet Diagno... Startdate: 17/08/2021 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Antivirus detection for URL or domain 2->45 47 Multi AV Scanner detection for dropped file 2->47 49 11 other signatures 2->49 8 Inv60995fromMicroVet Diagnostics212576.exe 6 2->8         started        process3 file4 27 C:\Users\user\AppData\...\nCSSNRmkLpV.exe, PE32 8->27 dropped 29 C:\Users\user\AppData\Local\...\tmp2FFF.tmp, XML 8->29 dropped 31 Inv60995fromMicroV...stics212576.exe.log, ASCII 8->31 dropped 51 Writes to foreign memory regions 8->51 53 Injects a PE file into a foreign processes 8->53 12 vbc.exe 193 8->12         started        17 schtasks.exe 1 8->17         started        signatures5 process6 dnsIp7 41 zbd.divendesign.in 142.4.7.91, 49726, 80 UNIFIEDLAYER-AS-1US United States 12->41 33 C:\ProgramData\sqlite3.dll, PE32 12->33 dropped 35 C:\ProgramData\vcruntime140.dll, PE32 12->35 dropped 37 C:\ProgramData\softokn3.dll, PE32 12->37 dropped 39 4 other files (none is malicious) 12->39 dropped 55 Tries to harvest and steal browser information (history, passwords, etc) 12->55 57 DLL side loading technique detected 12->57 59 Tries to steal Crypto Currency Wallets 12->59 19 cmd.exe 1 12->19         started        21 conhost.exe 17->21         started        file8 signatures9 process10 process11 23 taskkill.exe 1 19->23         started        25 conhost.exe 19->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-16 22:56:20 UTC
AV detection:
20 of 47 (42.55%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3ua4us237puo6agsh7imcit5ldt5mfu2rhr7dlu3xnh3vzdl7yqq._file
Verdict:
malicious
Similar samples:
42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf
OskiStealer
43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
OskiStealer
436651743894169dc9cd4c7ef01734420a5ce2d6dcaf57825197e0c756feeee9
OskiStealer
44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718
OskiStealer
69f41c2c444cd2147188d547c5edd6a4a8e2f238df52e1709dc7bb1066232ecc
OskiStealer
a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
OskiStealer
e5cfbeb6e53527b724d1a710c44dd7f86a0befadb35db2c81ee1ec9aafd12b40
OskiStealer
+ 2'599 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski infostealer spyware suricata
Link:
https://tria.ge/reports/210817-5rzefphbhs/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Loads dropped DLL
Uses the VBS compiler for execution
Downloads MZ/PE file
Oski
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
Malware Config
C2 Extraction:
zbd.divendesign.in
Unpacked files
SH256 hash:
37222f03be3dd383e751bbfe75c720d31c1884db8b7bca671102df1b1604ab27
MD5 hash:
683ed9c4711a3634b700b88541e2ab6a
SHA1 hash:
bf6e66059a7a6528cb345d4c835606752fd0fed5
Link:
https://www.unpac.me/results/4c7c4e7d-ac23-4216-a6ab-df9a96a3f0b6/
SH256 hash:
7abd04bea3daedcc0141a50982270f644af847dc52551e2ff253a86d7b57ed98
MD5 hash:
f559fd0fb91d219160cf9fcb1219cb81
SHA1 hash:
51c914991d4e1df7f90e837cf05bf254bf8c0898
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/4c7c4e7d-ac23-4216-a6ab-df9a96a3f0b6/
SH256 hash:
cc5c9161d1e61d8bdc3f9d73b9e73bd3d259a8b8bb3f087d22351e12ff0da239
MD5 hash:
1e5cb44c359e05df4a75e0a86089f4dc
SHA1 hash:
1bf30394460f7dd26831384719196c2becd52d02
Link:
https://www.unpac.me/results/4c7c4e7d-ac23-4216-a6ab-df9a96a3f0b6/
SH256 hash:
dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21
MD5 hash:
b146860b83e4b59ffb07dbbdff9b8e6d
SHA1 hash:
06031a3261528c023af96b026e3f24589a46038c
Link:
https://www.unpac.me/results/4c7c4e7d-ac23-4216-a6ab-df9a96a3f0b6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/dd01ca4b5bfb/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/dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21

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
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.

Cape
Cape
https://www.capesandbox.com/analysis/179834/

Comments