MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce. 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: 13


Intelligence 13 IOCs 7 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce
SHA3-384 hash: dc2f591b48a5bf8e1a76a23f55fabc3316bdc7fde34b68884c718ba7dd90f511e0a6fbbb1b0c57b97fb8dc41731f0297
SHA1 hash: cf077d805094232be37824dcda065e2b46b3a5a8
MD5 hash: dbab23f56fe907a1331afffa304ebeb9
humanhash: nitrogen-harry-beer-hamper
File name:dbab23f56fe907a1331afffa304ebeb9.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:1'133'568 bytes
First seen:2021-12-10 03:25:35 UTC
Last seen:2021-12-10 04:32:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:TQvxsT1RZClOfaFu7KqXEX4lVWPEgXY6k8+VQoqmAFznAnwUbT2v3WRgWGG:TsxO1ywfaFjq0IPkY6/+VGmBvTw3cgWf
Threatray 4'102 similar samples on MalwareBazaar
TLSH T10335235537F92B60DABE8FFD90A4A0688776B55B6862D31D2DC430DF58E1F008A60E37
File icon (PE):PE icon
dhash icon b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki)
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://hp-tv.tk/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://hp-tv.tk/6.jpg https://threatfox.abuse.ch/ioc/270269/
http://hp-tv.tk/1.jpg https://threatfox.abuse.ch/ioc/270270/
http://hp-tv.tk/2.jpg https://threatfox.abuse.ch/ioc/270271/
http://hp-tv.tk/3.jpg https://threatfox.abuse.ch/ioc/270272/
http://hp-tv.tk/4.jpg https://threatfox.abuse.ch/ioc/270273/
http://hp-tv.tk/5.jpg https://threatfox.abuse.ch/ioc/270274/
http://hp-tv.tk/7.jpg https://threatfox.abuse.ch/ioc/270275/

Intelligence

File Origin
# of uploads :
2
# of downloads :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
dbab23f56fe907a1331afffa304ebeb9.exe
Verdict:
Malicious activity
Analysis date:
2021-12-10 03:27:44 UTC
Tags:
trojan stealer vidar loader
Link:
https://app.any.run/tasks/a668e0ce-e3a3-4c70-9b82-c18f533ba5b0

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/213035/
Detection(s):
SecuriteInfo.com.ArtemisDBAB23F56FE9.18254.3449.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a tool to kill processes
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61b2c8cdfa72c81b5b154070/reports/511eb435-1181-4d80-9fc5-30e86cee175b/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c690d35a-ffb2-477e-8484-e7567ad6c01f
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/905084
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Multi AV Scanner detection for domain / URL
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
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 537562 Sample: ICa7GUhlJ4.exe Startdate: 10/12/2021 Architecture: WINDOWS Score: 100 35 Multi AV Scanner detection for domain / URL 2->35 37 Found malware configuration 2->37 39 Yara detected Oski Stealer 2->39 41 8 other signatures 2->41 8 ICa7GUhlJ4.exe 3 2->8         started        process3 process4 10 ICa7GUhlJ4.exe 196 8->10         started        15 ICa7GUhlJ4.exe 8->15         started        dnsIp5 31 hp-tv.tk 172.67.131.21, 49721, 80 CLOUDFLARENETUS United States 10->31 33 192.168.2.1 unknown unknown 10->33 23 C:\ProgramData\vcruntime140.dll, PE32 10->23 dropped 25 C:\ProgramData\sqlite3.dll, PE32 10->25 dropped 27 C:\ProgramData\softokn3.dll, PE32 10->27 dropped 29 4 other files (none is malicious) 10->29 dropped 43 Tries to harvest and steal browser information (history, passwords, etc) 10->43 45 Tries to steal Crypto Currency Wallets 10->45 17 cmd.exe 1 10->17         started        file6 signatures7 process8 process9 19 taskkill.exe 1 17->19         started        21 conhost.exe 17->21         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-10 03:26:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=l2iac7bbd57w7makiuxhzsehxdnhphoagmkmabhpmcotpj64zdha._file
Verdict:
malicious
Similar samples:
192f884438809d6fb01ae0c89c4ccd1fdae62d429e78bdbcc4ff4d28a54049af
OskiStealer
66a1b49f893976a60ca25813345ea54a5582acf7a5a0821c03cc45bcfc89b5c5
OskiStealer
6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7
OskiStealer
b70f4075c4ce52960faacb101aac17a9cd734cbec86b6a9d63944e900420bde1
OskiStealer
c17243e46ff224631e589c55642c3666e5c560715841e8b8ebdd511cb70da8dd
OskiStealer
e447edf7c703f03c3644f4d8b896974b7bfa59e7bc4036af5a800c7135dd09b0
OskiStealer
+ 4'092 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer suricata
Link:
https://tria.ge/reports/211210-dy731agfaj/
Behaviour
Checks processor information in registry
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
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:
hp-tv.tk
Unpacked files
SH256 hash:
ae3b4f4a4fcd7aa5a98e6b1e4db50a7634eff49999f1295a20f8a02e35cc7454
MD5 hash:
40d94445fcad8f9dff4e694fcc1cc6d2
SHA1 hash:
f66e23627bad1dbb10bfa593e647411c6e398ba9
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/aa52f9c8-50aa-470c-9473-40036cd66bff/
Parent samples :
96d8f77904387c5513e92733b0714987fdb476d6330c08c5404806b60f22af6f
692f3c6667e00facad6f7f400d646d5fe7db1407ba798a472671ebc51e881085
5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce
662cd105cb4bb0060036ea229c5a391a932ba4a9fbb5cb6020ba027026085058
SH256 hash:
f44536ad9506ba5ac9b2bd43b89bfeee742a71e32fd2e5f1c7198a46cf350757
MD5 hash:
0bc1c33d643704260d7fbf9821189d99
SHA1 hash:
a376dbefc948ad3e31697f85c3f7de0b3126faff
Link:
https://www.unpac.me/results/aa52f9c8-50aa-470c-9473-40036cd66bff/
SH256 hash:
9cd82dba6c55d901ac7d7007b7a04a30146ad7c297400d44f9d96b90c5ca25d4
MD5 hash:
d9477c36da677507cd33c6eef325d694
SHA1 hash:
330dc88b5041ca9edf57542f5a30c37eef6f11b1
Link:
https://www.unpac.me/results/aa52f9c8-50aa-470c-9473-40036cd66bff/
SH256 hash:
5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce
MD5 hash:
dbab23f56fe907a1331afffa304ebeb9
SHA1 hash:
cf077d805094232be37824dcda065e2b46b3a5a8
Link:
https://www.unpac.me/results/aa52f9c8-50aa-470c-9473-40036cd66bff/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/5e90017c211f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce

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:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
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
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload
Rule name:win_oski_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.oski.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

OskiStealer

Executable exe 5e90017c211f7f6fb00a452e7cc887b8da779dc03314c004ef609d37a7dcc8ce

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1862603/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/213035/

Comments