MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5a38b12ebce12dde580da36ee1b4a5c0387f9e81f7f738c278b60d5781dad6eb. 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: | 5a38b12ebce12dde580da36ee1b4a5c0387f9e81f7f738c278b60d5781dad6eb |
|---|---|
| SHA3-384 hash: | ff6251806311dc570694cdb801087e05ee26a29cd5ed07216ad82fe5c2eefecb23281c8f8ba4c2c925dcf9c720dcb8b3 |
| SHA1 hash: | 3c61930f2dfcbd798a063137629ef33f222855ca |
| MD5 hash: | 13a8ca17d4b77f65052f928f39ef46b8 |
| humanhash: | georgia-oscar-ohio-west |
| File name: | 13a8ca17d4b77f65052f928f39ef46b8.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 227'128 bytes |
| First seen: | 2021-04-28 13:11:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'749 x AgentTesla, 19'653 x Formbook, 12'246 x SnakeKeylogger) |
| ssdeep | 6144:tDmMtfUeAIQHuA36cdPqaQUVTI/CK5vyUin:t9eeAItC66SaRIqAv0 |
| Threatray | 1'067 similar samples on MalwareBazaar |
| TLSH | 502402429F98D905CAE13E767EB2F3648A75BC00B972CE9B58C8F30BC671B40D564366 |
| 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://5llion.com/6.jpg | https://threatfox.abuse.ch/ioc/19683/ |
| http://5llion.com/1.jpg | https://threatfox.abuse.ch/ioc/19684/ |
| http://5llion.com/2.jpg | https://threatfox.abuse.ch/ioc/19685/ |
| http://5llion.com/3.jpg | https://threatfox.abuse.ch/ioc/19686/ |
| http://5llion.com/4.jpg | https://threatfox.abuse.ch/ioc/19687/ |
| http://5llion.com/5.jpg | https://threatfox.abuse.ch/ioc/19688/ |
| http://5llion.com/7.jpg | https://threatfox.abuse.ch/ioc/19689/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
13a8ca17d4b77f65052f928f39ef46b8.exe
Verdict:
Malicious activity
Analysis date:
2021-04-28 13:17:56 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:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
DNS request
Deleting a recently created file
Reading critical registry keys
Replacing files
Creating a window
Delayed writing of the file
Sending an HTTP GET request
Sending a custom TCP request
Changing the Zone.Identifier stream
Creating a process with a hidden window
Running batch commands
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Launching a tool to kill processes
Enabling autorun by creating a file
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.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.spyw.evad
Score:
96 / 100
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Creates files in alternative data streams (ADS)
Creates HTML files with .exe extension (expired dropper behavior)
Downloads files with wrong headers with respect to MIME Content-Type
Found many strings related to Crypto-Wallets (likely being stolen)
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
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-04-28 13:12:18 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 1'057 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:azorult family:oski discovery infostealer spyware stealer trojan
Behaviour
Checks processor information in registry
Kills process with taskkill
NTFS ADS
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 data files stored by FTP clients
Reads local data of messenger clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Azorult
Oski
Malware Config
C2 Extraction:
http://bengalcement.com.bd/AxPu/index.php
Unpacked files
SH256 hash:
c0ce2cf58bbfebb58d003bb17a189e96a376b69a89242a19e34e625f32bb78ab
MD5 hash:
d1076d69ad47c02a6baeacd06b13eccd
SHA1 hash:
e08d7460fba61eba7cad811aa0aed4ce6d52efe7
SH256 hash:
3b4f6518a7abde1ef6bb1b98c8881c270b26eab379f6e1e2f51b12ab3c01d7bc
MD5 hash:
9c76405b45fd385dc5864ccea2b712bc
SHA1 hash:
d71aeae33b88e22094032a5b5565199f1f3f570c
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
2cda702404836a08e5b61e174f9cffb38e00e1dda551a3c2d3c6ba2beec07344
MD5 hash:
d4b7e84155553a106d0e52a8b0f351e8
SHA1 hash:
a1655827ea2f004972c99c254a9749b4cec26052
SH256 hash:
5a38b12ebce12dde580da36ee1b4a5c0387f9e81f7f738c278b60d5781dad6eb
MD5 hash:
13a8ca17d4b77f65052f928f39ef46b8
SHA1 hash:
3c61930f2dfcbd798a063137629ef33f222855ca
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: | 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.
Web download
Delivery method
Distributed via web download
Comments
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MBC behaviors list (github.com/accidentalrebel/mbcscan):
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0) [B0023] Execution::Install Additional Program