MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 afdbf26cb55fb5d7acb13eee328ced4ffd4fd1d42a72dc95fb1053b264ec45ee. 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: | afdbf26cb55fb5d7acb13eee328ced4ffd4fd1d42a72dc95fb1053b264ec45ee |
|---|---|
| SHA3-384 hash: | 76126d6502f62819dd2d1977a4b217ed88ccb469a49594a6c80e1d234efe3ad964e1f6b933aacf1b74101ce468f4517a |
| SHA1 hash: | 21b5e3b09c99c6da44219e53dbbe02e3c155c53a |
| MD5 hash: | 4087a6277a5288c9dfddee6b28895c0f |
| humanhash: | illinois-speaker-oranges-cold |
| File name: | Ybhfk.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 702'264 bytes |
| First seen: | 2021-05-07 11:00:06 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:E1fxhwL8mLAHefRIZtbVqrTwqEZTTVGeeeAItC66rnmrz+HO:MZyJAH/ZtxqEZTTV+9I0Rmrzs |
| Threatray | 4 similar samples on MalwareBazaar |
| TLSH | E3E46D0017E85B97C2AE03B9E199E63173F5DE05A25AAB8B690BF9F53F7339144009D3 |
| Reporter |  starsSk87264403 |
| Tags: | OskiStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
A131A3DBAD382942028AA0BA8C4D5DDC6FF85E05.zip
Verdict:
Malicious activity
Analysis date:
2021-05-06 11:40:02 UTC
Tags:
exploit CVE-2017-11882 loader trojan stealer vidar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
DNS request
Sending an HTTP GET request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
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.
Result
Threat name:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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:
ByteCode-MSIL.Downloader.Seraph
Status:
Malicious
First seen:
2021-05-06 14:46:42 UTC
AV detection:
19 of 47 (40.43%)
Threat level:
3/5
Detection(s):
Malicious file
Verdict:
suspicious
Similar samples:
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: EnumeratesProcesses
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
Malware Config
C2 Extraction:
209.141.40.19
Unpacked files
SH256 hash:
e98441a72484484268127b5be6d581dd375d0cce14e5fc7ebf9acdf5240facf7
MD5 hash:
1b3eb2724fd33e62168bae9cacbcbe50
SHA1 hash:
8e1cc016170e451ef27b50d03d87653cdcf0734a
SH256 hash:
91bee542a753bd96fb38f97d63053a45e7e7e7ae345faa27e89ac18c99201afa
MD5 hash:
d288ec06440225dae7dac503e3dc0f3e
SHA1 hash:
ebe2546d27caaee79397f8f8aef98807c2380d9c
SH256 hash:
c27e09112c0c543b5f0876347765a374d0a7c89fe6f8d490013d07d8b68753c1
MD5 hash:
bb43c9f517c5d01bf0a3205f08cdd493
SHA1 hash:
51ab35727f745c63a6b0d802712768983316503d
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
afdbf26cb55fb5d7acb13eee328ced4ffd4fd1d42a72dc95fb1053b264ec45ee
MD5 hash:
4087a6277a5288c9dfddee6b28895c0f
SHA1 hash:
21b5e3b09c99c6da44219e53dbbe02e3c155c53a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
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: | dsc |
|---|---|
| Author: | Aaron DeVera |
| Description: | Discord domains |
| Rule name: | INDICATOR_KB_CERT_04f131322cc31d92c849fca351d2f141 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables signed with stolen, revoked or invalid certificates |
| Rule name: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
| Rule name: | pe_imphash |
|---|
| Rule name: | Ping_Del_method_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | cmd ping IP nul del |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0023] Execution::Install Additional Program