MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4f1bded2f0d6d077f672506e9a3ab5f4021a0a1a579e0b00d2773cd44199b813. 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: 10
| SHA256 hash: | 4f1bded2f0d6d077f672506e9a3ab5f4021a0a1a579e0b00d2773cd44199b813 |
|---|---|
| SHA3-384 hash: | fbd9e413f8fd7bb1c5e75320d2f9c710c43175ac8fa2c7593c3def39a9da7538a4d36769deb44d78e24bdfc51f8bb3db |
| SHA1 hash: | 1cb23326e19eba0ad22dd3cdf9fa1b0cacdb2efb |
| MD5 hash: | 59f7460dc225bb728d71b4675703eed4 |
| humanhash: | tango-hawaii-skylark-emma |
| File name: | FEED DEBTORS AGEWISE JUNE-21.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 219'412 bytes |
| First seen: | 2021-07-07 10:41:12 UTC |
| Last seen: | 2021-07-07 11:39:37 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (278 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger) |
| ssdeep | 6144:xMm4CCAMUMukmHfZaG9pKnigdOUcWsYs6EY8VBEw5:xMwRLMhmaG9sOUcjzlY8fP |
| Threatray | 1'599 similar samples on MalwareBazaar |
| TLSH | CF2402C51AA4C893F0F655331B3E1B666FA7A107155C9B0F07106B9F7F26A82CA0F761 |
| Reporter |  abuse_ch |
| Tags: | exe OskiStealer |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| http://buck-mhe.cf/6.jpg | https://threatfox.abuse.ch/ioc/158272/ |
| http://buck-mhe.cf/1.jpg | https://threatfox.abuse.ch/ioc/158273/ |
| http://buck-mhe.cf/2.jpg | https://threatfox.abuse.ch/ioc/158274/ |
| http://buck-mhe.cf/3.jpg | https://threatfox.abuse.ch/ioc/158275/ |
| http://buck-mhe.cf/4.jpg | https://threatfox.abuse.ch/ioc/158276/ |
| http://buck-mhe.cf/5.jpg | https://threatfox.abuse.ch/ioc/158277/ |
| http://buck-mhe.cf/7.jpg | https://threatfox.abuse.ch/ioc/158278/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
167
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FEED DEBTORS AGEWISE JUNE-21.exe
Verdict:
Malicious activity
Analysis date:
2021-07-07 10:42:38 UTC
Tags:
trojan stealer vidar loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
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.
Malware family:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Maps a DLL or memory area into another process
Posts data to a JPG file (protocol mismatch)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.SpyNoon
Status:
Malicious
First seen:
2021-07-07 10:42:13 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'589 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski discovery infostealer spyware stealer
Behaviour
Checks processor information in registry
Kills process with taskkill
Suspicious behavior: MapViewOfSection
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
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
buck-mhe.cf
Unpacked files
SH256 hash:
863d58e6caefc21983064b88074b1f1606201bbd15a01541f6224a6becf6b15a
MD5 hash:
400b6bea8dd38cfbc5551111c86fd60a
SHA1 hash:
ecfef95ff8c0a0183cce6a802161d6240fa56697
SH256 hash:
5829e996c8eb0b7cd629b2c4f8408f5fd62e1afbed91e5900bf7a55df47ef225
MD5 hash:
2032f067e4c6231f534eab07a8609bd4
SHA1 hash:
397682ca00c6f310eb9e445e65372dfbb495d2dc
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
4f1bded2f0d6d077f672506e9a3ab5f4021a0a1a579e0b00d2773cd44199b813
MD5 hash:
59f7460dc225bb728d71b4675703eed4
SHA1 hash:
1cb23326e19eba0ad22dd3cdf9fa1b0cacdb2efb
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
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 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Vidar / ArkeiStealer |
| Rule name: | Vidar |
|---|---|
| Author: | kevoreilly |
| Description: | Vidar Payload |
| Rule name: | win_oski_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
| Rule name: | win_oski_g0 |
|---|---|
| Author: | Slavo Greminger, SWITCH-CERT |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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