MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a5c9be9bcb214e69a39285a634f95e43fdf1ad10536bcc9bce84be7edb48cb31. 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: 9
| SHA256 hash: | a5c9be9bcb214e69a39285a634f95e43fdf1ad10536bcc9bce84be7edb48cb31 |
|---|---|
| SHA3-384 hash: | 76b21e94e2ad6dd119564899c10a4c81b7554b6a68967bb7e444153171ba72b2b8830ebeae4ad1642f8e43c3fdbe6c06 |
| SHA1 hash: | 2d063d7f428f549017b8e0d00f55401bf8fbaa1f |
| MD5 hash: | 590fc5d8cc6f8dc41aa4e40b63aa663f |
| humanhash: | mars-seven-thirteen-twenty |
| File name: | IMG0537521501.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 224'056 bytes |
| First seen: | 2021-04-28 03:40:39 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 6144:uf9iRTCGQtfUeAIQHuA36cdk/bvh9bIQyFlA:koTCGQeeAItC66GvhWQy/A |
| Threatray | 1'059 similar samples on MalwareBazaar |
| TLSH | C024F1039ACC9506EAF239726CB2F3240B34BD11BD61CAAFADD5F32BD6317058815766 |
| 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://31.210.20.238/6.jpg | https://threatfox.abuse.ch/ioc/19580/ |
| http://31.210.20.238/1.jpg | https://threatfox.abuse.ch/ioc/19581/ |
| http://31.210.20.238/2.jpg | https://threatfox.abuse.ch/ioc/19582/ |
| http://31.210.20.238/3.jpg | https://threatfox.abuse.ch/ioc/19583/ |
| http://31.210.20.238/4.jpg | https://threatfox.abuse.ch/ioc/19584/ |
| http://31.210.20.238/5.jpg | https://threatfox.abuse.ch/ioc/19585/ |
| http://31.210.20.238/7.jpg | https://threatfox.abuse.ch/ioc/19586/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IMG0537521501.exe
Verdict:
No threats detected
Analysis date:
2021-04-28 03:43:15 UTC
Tags:
n/a
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
Connection attempt
Deleting a recently created file
Replacing files
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a tool to kill processes
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:
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:
Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Creates an undocumented autostart registry key
Downloads files with wrong headers with respect to MIME Content-Type
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
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
Writes to foreign memory regions
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2021-04-28 02:38:53 UTC
AV detection:
6 of 47 (12.77%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'049 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: 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
Unpacked files
SH256 hash:
834f819f3cca9b9aae6e51f46f4e8b1b9970afc5739542b5d33498275c9613db
MD5 hash:
3df71bc08c264f8be0e9f1bf78210c01
SHA1 hash:
f72661fc7115e17f421ee65e867fbb1515ed4e8d
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
c0ce2cf58bbfebb58d003bb17a189e96a376b69a89242a19e34e625f32bb78ab
MD5 hash:
d1076d69ad47c02a6baeacd06b13eccd
SHA1 hash:
e08d7460fba61eba7cad811aa0aed4ce6d52efe7
SH256 hash:
6682a0c6f175e66906077749d89243f6187bca3d34852d6f97ebcace8ad67a71
MD5 hash:
1d7dd10e070ab6edf0a638c5eef1bc3c
SHA1 hash:
1a0de3ba580ce5d4694fe0d4c04d07c5239fcd23
SH256 hash:
a5c9be9bcb214e69a39285a634f95e43fdf1ad10536bcc9bce84be7edb48cb31
MD5 hash:
590fc5d8cc6f8dc41aa4e40b63aa663f
SHA1 hash:
2d063d7f428f549017b8e0d00f55401bf8fbaa1f
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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_EXE_Packed_SmartAssembly |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with SmartAssembly |
| 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.
Comments
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MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0023] Execution::Install Additional Program