MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4. 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: 11
| SHA256 hash: | 2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4 |
|---|---|
| SHA3-384 hash: | 4a29b69a1d4c3063a20c0cd0a1af2019beb6566062412101f1735a7c2bbac212db3f292c6a5e7ab657a441f09e7d9727 |
| SHA1 hash: | f6490ccb746fabb8eaa25dd09e415af9d59410d0 |
| MD5 hash: | 9ede6811a55c8082d02b552392595f06 |
| humanhash: | berlin-fifteen-whiskey-one |
| File name: | MN00987YU72.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 784'896 bytes |
| First seen: | 2021-09-02 08:17:14 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:Ic00ApujcYUetQ0SeVtZClvK42sFwRQxyFMJI:IVujcbJ7ktZC+QEF |
| Threatray | 3'045 similar samples on MalwareBazaar |
| TLSH | T1FCF43D3E18FE2327D176C7E6CBE48823B6D488AF3232E96557D653254356B4634C322E |
| dhash icon | 68f4f4d0f0f0d8c4 (4 x OskiStealer, 3 x AgentTesla, 2 x AsyncRAT) |
| Reporter |  GovCERT_CH |
| Tags: | exe OskiStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
166
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MN00987YU72.exe
Verdict:
Malicious activity
Analysis date:
2021-09-02 08:22:13 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
Creating a window
Sending a UDP request
Launching a process
Creating a file
DNS request
Connection attempt
Deleting a recently created file
Reading critical registry keys
Replacing files
Delayed writing of the file
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for the window
Stealing user critical data
Launching a tool to kill processes
Unauthorized injection to a system process
Malware family:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
DLL side loading technique detected
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Posts data to a JPG file (protocol mismatch)
Sigma detected: Suspicious Process Start Without DLL
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 AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Generic
Status:
Suspicious
First seen:
2021-09-02 08:14:24 UTC
AV detection:
7 of 41 (17.07%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 3'035 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski infostealer spyware
Behaviour
Checks processor information in registry
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Loads dropped DLL
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
http://bctpump.us
Unpacked files
SH256 hash:
9a569be1313734a7a5657149f890204e1246833e80ac0e45c15b9ebc972cfa99
MD5 hash:
db1ca79a10eb8debc020653b67a41ed4
SHA1 hash:
c9aff868749946879d85e0c75c11a085d3c244c2
SH256 hash:
8e03f35b69cfaa3dd1969957d7947c91e56df9670ea6a5db5975c3376d359ee0
MD5 hash:
87017c5617759bca27207d528697bdc3
SHA1 hash:
919a1a153ab4b6d1b42a934e1b9741daa15db268
Detections:
win_oski_g0
win_oski_auto
Parent samples :
7d12860910f95752bab43166470d3ac6dd1b8be3599bae2fca48aa1d01d1034a
5ffe71b977866248e55612e20cea0bf3ad51a50896443d791081f58b49cdc5df
2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4
091fb99d751df7e9e867422f401ff7181adc35c6f90ad2c8aafd54e3ec724771
21ac6486349c780cc40e9ab611d1e918a2919ba01d360572534c1da745b338a6
5ffe71b977866248e55612e20cea0bf3ad51a50896443d791081f58b49cdc5df
2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4
091fb99d751df7e9e867422f401ff7181adc35c6f90ad2c8aafd54e3ec724771
21ac6486349c780cc40e9ab611d1e918a2919ba01d360572534c1da745b338a6
SH256 hash:
a1870146ad20c74e3b311e15c908a12936996830afbab978a871d968af8ea372
MD5 hash:
4a63465180ade26d1089b5abcaaef4d2
SHA1 hash:
4b0f009403ae3d1c674f45ca2aef93004da51598
SH256 hash:
2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4
MD5 hash:
9ede6811a55c8082d02b552392595f06
SHA1 hash:
f6490ccb746fabb8eaa25dd09e415af9d59410d0
Verdict:
Malicious
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: | MALWARE_Win_Vidar |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Vidar / ArkeiStealer |
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Vidar |
|---|---|
| Author: | kevoreilly |
| Description: | Vidar Payload |
| Rule name: | win_oski_auto |
|---|---|
| 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.
Malspam
Dropped by
OskiStealer
Delivery method
Distributed via e-mail attachment
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