MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6. 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: 8


Intelligence 8 IOCs 7 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6
SHA3-384 hash: 52accb253085770bee6dc4ec339b38e02ef85977737200899dcbf42b81b0b9348524d16475e63cdb34a704d58e00f5ee
SHA1 hash: 48e8a88ca75782489db9b5da0dff11f050a7a4e0
MD5 hash: 5753388fbfcde9e08d00ac9e2be5d881
humanhash: london-lactose-mobile-wyoming
File name:5753388fbfcde9e08d00ac9e2be5d881.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:251'192 bytes
First seen:2021-05-04 17:30:51 UTC
Last seen:2021-05-04 20:45:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:voiswQNk+vZJKZ0Hx7hA0qstfzoeAWRfS8ypYAxBWA3VcuVdxtWL1ySDMIeKppKe:gRV4QpZvtfUeAIQHuA36cdHj2O6K0Xw
Threatray 88 similar samples on MalwareBazaar
TLSH B43401806ED8A30ACD755D79AEA2C178B7706F116C10E6CB5C23F3494BB4BE16460E9B
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://198.98.60.43/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://198.98.60.43/6.jpg https://threatfox.abuse.ch/ioc/29022/
http://198.98.60.43/1.jpg https://threatfox.abuse.ch/ioc/29023/
http://198.98.60.43/2.jpg https://threatfox.abuse.ch/ioc/29024/
http://198.98.60.43/3.jpg https://threatfox.abuse.ch/ioc/29025/
http://198.98.60.43/4.jpg https://threatfox.abuse.ch/ioc/29026/
http://198.98.60.43/5.jpg https://threatfox.abuse.ch/ioc/29027/
http://198.98.60.43/7.jpg https://threatfox.abuse.ch/ioc/29028/

Intelligence

File Origin
# of uploads :
3
# of downloads :
98
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/149824/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.EEA.genEldorado.5451.6867.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Sending a UDP request
Creating a file
Deleting a recently created file
Replacing files
Creating a window
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:
Unknown
Detection:
malicious
Classification:
troj.spyw.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/710605
Signature
Creates an undocumented autostart registry key
Downloads files with wrong headers with respect to MIME Content-Type
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 404231 Sample: joncGi9hvx.exe Startdate: 04/05/2021 Architecture: WINDOWS Score: 88 41 Multi AV Scanner detection for dropped file 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Downloads files with wrong headers with respect to MIME Content-Type 2->45 47 2 other signatures 2->47 8 joncGi9hvx.exe 8 2->8         started        process3 file4 23 C:\Users\user\AppData\Roaming\...\notpad.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\...\joncGi9hvx.exe, PE32 8->25 dropped 27 C:\Users\...\joncGi9hvx.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\AppData\...\joncGi9hvx.exe.log, ASCII 8->29 dropped 49 Creates an undocumented autostart registry key 8->49 51 Writes to foreign memory regions 8->51 53 Injects a PE file into a foreign processes 8->53 12 joncGi9hvx.exe 193 8->12         started        signatures5 process6 dnsIp7 39 198.98.60.43, 49723, 80 PONYNETUS United States 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 55 Multi AV Scanner detection for dropped file 12->55 57 Tries to harvest and steal browser information (history, passwords, etc) 12->57 59 Tries to steal Crypto Currency Wallets 12->59 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/d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2021-05-04 16:15:11 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2ndgmxoaupbxevxtcp3otza4evfm64gfthiap4jzceumjm3xdtta._file
Verdict:
unknown
Similar samples:
1860347130f68ba0d084750816ca0fc532b8647d89e36ff53c0355e73a46d332
OskiStealer
37f87d9529b496054bc82c319a8908fc82f7704a7de3bc0353a6474995aa02e3
OskiStealer
40e8910e48e5bfde7fd30bbc51a1d371a378dc4a306ed2145990219554f80a4a
OskiStealer
5e90997364ac5c40a3c374faa4a11c74e9d040e42c10a2dcab169818e1d717b5
OskiStealer
60ef6cebb8be31d48b6d182a5df9597a74e0978c3bae05a43167775deba9199c
OskiStealer
916bd03b40de6bfa498311e3a70d3e98c50e8255fd413d446daab77951224856
OskiStealer
9f8e2f4d984a481f05c45de6fd4991d8f912166fe3ffa1d299a3719e2e7e82c1
OskiStealer
d5e1923de474408cc5f31650c36345027663f0411bef1e1ef4fa3a2d56bc5d42
OskiStealer
df3dccb8f35520888aad04bdbcba5c3c6e74ff7eac793cb65f2cf45d9be8203d
OskiStealer
f98f307a6a414fcbe42e1017d720f1ed8c9e0df21b703f74e94dbe1afa8b32ff
OskiStealer
+ 78 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
Link:
https://tria.ge/reports/210504-pdpg794hta/
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:
c8faedb4be47c83463ed01c022bd412c8d043aab4d1097f12753615ed010fd33
MD5 hash:
3fae0f266d56f36c7df1d88edb278650
SHA1 hash:
f2015cc01f66b6dbe045a5e87659daa633986fb3
Link:
https://www.unpac.me/results/d52e5a30-d1b2-41cd-88e5-3e2d2878ad45/
SH256 hash:
bb9aaf3edec4b37d9c9cba70e1d87f36773536ff44cde09f8cfd9e742a08fb2e
MD5 hash:
a59a7fe95d4de78ef996350361816281
SHA1 hash:
daca640528bff7d6b8d39c22a54d5cd2b1baabf4
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/d52e5a30-d1b2-41cd-88e5-3e2d2878ad45/
SH256 hash:
8599c6584374743bf1941e9caa5874f97cff80fb10c247786ec67f6506791e26
MD5 hash:
c082c5661d0b89d7b3401bb3a75027c9
SHA1 hash:
832494657de4cc2f83ad192a9bba10d9095f489c
Link:
https://www.unpac.me/results/d52e5a30-d1b2-41cd-88e5-3e2d2878ad45/
SH256 hash:
d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6
MD5 hash:
5753388fbfcde9e08d00ac9e2be5d881
SHA1 hash:
48e8a88ca75782489db9b5da0dff11f050a7a4e0
Link:
https://www.unpac.me/results/d52e5a30-d1b2-41cd-88e5-3e2d2878ad45/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6

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:pe_imphash
Create hunting rule

File information

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

Web download

OskiStealer

Executable exe d346665dc0a3c37256f313f6e9e41c254acf70c599d007f1391128c4b3771ce6

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1193689/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/149824/

Comments