MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918. 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


Intelligence 9 IOCs 7 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918
SHA3-384 hash: 1dd84954acbdca60ea22ec4e2aceaf8cd34dc8e1fc68b73b71f6722e89c0a2d4d0b7a7d694502c4833332916255005bb
SHA1 hash: b9c256cb78dd83ff0ae5fe6755ff2e28096ff11d
MD5 hash: a746c90dae245470777071a6c41dea07
humanhash: video-glucose-delaware-texas
File name:FLP5012306171.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:388'920 bytes
First seen:2021-04-26 11:56:18 UTC
Last seen:2021-04-26 12:58:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:Tv8g28i1pUofS8ypYAxBWA3VcuVdxskmG9grayljeFKpPKV3PXuOq/R8E4c8tTLp:LTHBaQHuA36cd2kmGbP0KdXWRre2G
Threatray 3 similar samples on MalwareBazaar
TLSH C784B278FDFF6A85C210DE3A666C705A56E19C48CE8B837BE0D472A47E70CC81A4651F
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://5azc.xyz/6.jpg

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://5azc.xyz/6.jpg https://threatfox.abuse.ch/ioc/10115/
http://5azc.xyz/1.jpg https://threatfox.abuse.ch/ioc/10116/
http://5azc.xyz/2.jpg https://threatfox.abuse.ch/ioc/10117/
http://5azc.xyz/3.jpg https://threatfox.abuse.ch/ioc/10118/
http://5azc.xyz/4.jpg https://threatfox.abuse.ch/ioc/10119/
http://5azc.xyz/5.jpg https://threatfox.abuse.ch/ioc/10120/
http://5azc.xyz/7.jpg https://threatfox.abuse.ch/ioc/10121/

Intelligence

File Origin
# of uploads :
2
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FLP5012306171.exe
Verdict:
Suspicious activity
Analysis date:
2021-04-26 11:59:49 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/61d5ca1c-eb56-4b3b-a095-b8d4d53707f0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/144327/
Detection(s):
Win.Packed.Bulz-9854729-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Launching the default Windows debugger (dwwin.exe)
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:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/697856
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 many strings related to Crypto-Wallets (likely being stolen)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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
Yara detected Costura Assembly Loader
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 397849 Sample: FLP5012306171.exe Startdate: 26/04/2021 Architecture: WINDOWS Score: 100 41 Multi AV Scanner detection for dropped file 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected Vidar stealer 2->45 47 6 other signatures 2->47 8 FLP5012306171.exe 8 2->8         started        process3 file4 23 C:\Users\user\AppData\Roaming\...\notpad.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\...\FLP5012306171.exe, PE32 8->25 dropped 27 C:\...\FLP5012306171.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\...\FLP5012306171.exe.log, ASCII 8->29 dropped 49 Creates an undocumented autostart registry key 8->49 12 FLP5012306171.exe 193 8->12         started        signatures5 process6 dnsIp7 39 5azc.xyz 45.144.225.201, 49761, 80 DEDIPATH-LLCUS Netherlands 12->39 31 C:\ProgramData\vcruntime140.dll, PE32 12->31 dropped 33 C:\ProgramData\sqlite3.dll, PE32 12->33 dropped 35 C:\ProgramData\softokn3.dll, PE32 12->35 dropped 37 4 other files (none is malicious) 12->37 dropped 51 Multi AV Scanner detection for dropped file 12->51 53 Performs DNS queries to domains with low reputation 12->53 55 Tries to harvest and steal browser information (history, passwords, etc) 12->55 57 Tries to steal Crypto Currency Wallets 12->57 17 cmd.exe 1 12->17         started        file8 signatures9 process10 process11 19 taskkill.exe 1 17->19         started        21 conhost.exe 17->21         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918/
Threat name:
ByteCode-MSIL.Trojan.Bulz
Create hunting rule
Status:
Malicious
First seen:
2021-04-26 11:35:04 UTC
AV detection:
12 of 47 (25.53%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=on3jgiaupf7ew722drdxnwdf4g5ahs5gtwmbd4i2isobrakxzema._file
Verdict:
unknown
Similar samples:
6733d0ce3ad0c63755f82e7c05a815f2420cccd7f7775dd9227732f59e7fafff
OskiStealer
767ff6709f5ea14af565b50baca9c574d1ec22eb0ddfd8468b64adf7a4ea6ca4
OskiStealer
8ad095b5f3cbe5651719b70347c94f489a4a14d72a4535c68f9829fe8d0ec738
OskiStealer
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
Link:
https://tria.ge/reports/210426-sszp6w6vne/
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:
ebb4c7a8527658d4f02f6242d0a4a518e5881ac4b89ee7036cc8464214a66811
MD5 hash:
9766c14be8e0d0a3e027c63fa097b55b
SHA1 hash:
c96561c8f8aa14db919676b8e84bccb581436db7
Link:
https://www.unpac.me/results/e9b47cce-ded5-43de-a610-08f819646115/
SH256 hash:
7d6c5401ab4807940d793842d446eace3f567753aee75dc47723b5add417df61
MD5 hash:
ac489332c7d564b0cfe32e06f95b0788
SHA1 hash:
9a74fd3cb0ce4a54c2e023e626ef23189f41d7e9
Link:
https://www.unpac.me/results/e9b47cce-ded5-43de-a610-08f819646115/
SH256 hash:
11b21a35d0dcdf39cd34458455f6f6668dc6d57379b1385a2c402e840e131d5f
MD5 hash:
82fa4787f4bf874ca08f365aaf796f81
SHA1 hash:
76f8d7004dadc7a65198a775ddf53b2c6ee4800d
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/e9b47cce-ded5-43de-a610-08f819646115/
Parent samples :
7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918
25372a9d5205bae496a358c0d33c9f4f9a6e4f3daa00e693cc1df5721c8227fb
064ac9ba6695cc56f687e0a0a6bc06c30f4c8f5276e52630e7aa27b02ce8feab
SH256 hash:
7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918
MD5 hash:
a746c90dae245470777071a6c41dea07
SHA1 hash:
b9c256cb78dd83ff0ae5fe6755ff2e28096ff11d
Link:
https://www.unpac.me/results/e9b47cce-ded5-43de-a610-08f819646115/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918

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
Create hunting rule
Author:Aaron DeVera
Description:Discord domains
Rule name:INDICATOR_KB_CERT_04f131322cc31d92c849fca351d2f141
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload
Rule name:win_oski_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_oski_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/144327/

Comments