MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c210434fcb39927f4a0d0a844a1a883f8274bc3b9e6d3e6e883f8072f316ca6a. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c210434fcb39927f4a0d0a844a1a883f8274bc3b9e6d3e6e883f8072f316ca6a
SHA3-384 hash: 8deda8031b37c76c2a7fec0add19180dfacb369a9a9e179f85704ff4d830b83b0d13ad7f3c3acc4e780dcc5a19087e5b
SHA1 hash: 893b19a862fca02a5ec9ab0cd270a4970849ecb1
MD5 hash: 74a962db45d6ab6c859ff627987bf1f6
humanhash: september-cup-spring-ack
File name:IMG052361778.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:707'896 bytes
First seen:2021-05-06 07:36:09 UTC
Last seen:2021-05-06 09:09:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Bu1fxhwL8mLAHefRIZtbVqrTwqEZneeAItC669VMk:AZyJAH/ZtxqEZe9I0nVJ
Threatray 1'116 similar samples on MalwareBazaar
TLSH 30E46C0057E85B97C2AE03B9E198E63173F5DE05A25AAB8B680BF9F53F7339145009D3
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://193.142.59.33/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://193.142.59.33/6.jpg https://threatfox.abuse.ch/ioc/30149/
http://193.142.59.33/1.jpg https://threatfox.abuse.ch/ioc/30150/
http://193.142.59.33/2.jpg https://threatfox.abuse.ch/ioc/30152/
http://193.142.59.33/3.jpg https://threatfox.abuse.ch/ioc/30153/
http://193.142.59.33/4.jpg https://threatfox.abuse.ch/ioc/30154/
http://193.142.59.33/5.jpg https://threatfox.abuse.ch/ioc/30155/
http://193.142.59.33/7.jpg https://threatfox.abuse.ch/ioc/30156/

Intelligence

File Origin
# of uploads :
3
# of downloads :
140
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/151423/
Detection(s):
SecuriteInfo.com.Artemis74A962DB45D6.30342.6259.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
DNS request
Sending an HTTP GET request
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:
Unknown
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/713409
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Creates an undocumented autostart registry key
Downloads files with wrong headers with respect to MIME Content-Type
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Sigma detected: WScript or CScript Dropper
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
Wscript starts Powershell (via cmd or directly)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 405629 Sample: IMG052361778.exe Startdate: 06/05/2021 Architecture: WINDOWS Score: 100 50 Multi AV Scanner detection for dropped file 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 .NET source code contains potential unpacker 2->54 56 6 other signatures 2->56 8 IMG052361778.exe 18 11 2->8         started        process3 dnsIp4 46 192.168.2.1 unknown unknown 8->46 30 C:\Users\user\AppData\Roaming\...\notpad.exe, PE32 8->30 dropped 32 C:\Users\user\AppData\...\IMG052361778.exe, PE32 8->32 dropped 34 C:\Users\user\...\notpad.exe:Zone.Identifier, ASCII 8->34 dropped 36 3 other malicious files 8->36 dropped 58 Creates an undocumented autostart registry key 8->58 13 IMG052361778.exe 193 8->13         started        18 wscript.exe 1 8->18         started        file5 signatures6 process7 dnsIp8 48 193.142.59.33, 49761, 80 HOSTSLICK-GERMANYNL Netherlands 13->48 38 C:\ProgramData\vcruntime140.dll, PE32 13->38 dropped 40 C:\ProgramData\sqlite3.dll, PE32 13->40 dropped 42 C:\ProgramData\softokn3.dll, PE32 13->42 dropped 44 4 other files (none is malicious) 13->44 dropped 60 Multi AV Scanner detection for dropped file 13->60 62 Machine Learning detection for dropped file 13->62 64 Tries to harvest and steal browser information (history, passwords, etc) 13->64 66 Tries to steal Crypto Currency Wallets 13->66 20 cmd.exe 13->20         started        68 Wscript starts Powershell (via cmd or directly) 18->68 70 Adds a directory exclusion to Windows Defender 18->70 22 powershell.exe 25 18->22         started        file9 signatures10 process11 process12 24 conhost.exe 20->24         started        26 taskkill.exe 20->26         started        28 conhost.exe 22->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c210434fcb39927f4a0d0a844a1a883f8274bc3b9e6d3e6e883f8072f316ca6a/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-05-06 07:36:23 UTC
AV detection:
8 of 47 (17.02%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yiiegt6lhgjh6sqnbkceuguih6bhjpb3tzwt43uih6ahf4ywzjva._file
Verdict:
malicious
Similar samples:
1860347130f68ba0d084750816ca0fc532b8647d89e36ff53c0355e73a46d332
OskiStealer
25372a9d5205bae496a358c0d33c9f4f9a6e4f3daa00e693cc1df5721c8227fb
OskiStealer
37f96df377557cad9bdb2caa4064bbf4dd862e935a64e1d802d445358695e15c
OskiStealer
3aeccf51ec935646a4987a1683d5dd8a251d171d326041282759753e371dff4f
OskiStealer
604e8bce3d31f5e04fe9622cedeb0696a69b9cb7f262a9bb33009ede20df100a
OskiStealer
76a5f8550442958458b6bdb42625ceda1380548e9bcd8200e584f3c486de96ed
OskiStealer
916bd03b40de6bfa498311e3a70d3e98c50e8255fd413d446daab77951224856
OskiStealer
b2454961c84e927b086719e0bae8016bee823e17402fb0feca8bda4e63ff009c
OskiStealer
cb24694242c1c1618678711184ab8abe6a1335d348f3549d2b568d99f793bf28
OskiStealer
db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062
OskiStealer
+ 1'106 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/210506-pwj42w2c2n/
Behaviour
Checks processor information in registry
Kills process with taskkill
Modifies registry class
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:
4c2a499a5bf1fbb0b81456af1351fcab1e1eb548532be93b57574c7f31349da4
MD5 hash:
eb29406eb41de6d3cdbba8d87376f1ea
SHA1 hash:
986b62a4ce4a277b2422f112ac69bf18af9095a4
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/2965bef6-9415-4db4-aa70-a81a8a571914/
SH256 hash:
86130095bacbf19946d29f6f398d30039369b63b09720d733cd47bc229d224f3
MD5 hash:
20cfb0f60f748ef98b0ec7b25b9d7852
SHA1 hash:
a9492a7803922f6f690da76dca20391b801b2c7f
Link:
https://www.unpac.me/results/2965bef6-9415-4db4-aa70-a81a8a571914/
SH256 hash:
0100c99e6d6b5156385bcd8b021cd8456bbdf592b55b5f0402c9f86fd8a70adc
MD5 hash:
296e47dbd8c666c767b10a3ff5e8c33c
SHA1 hash:
2aedf40060f7b1d35df56ffc242e2d34bc14d7fc
Link:
https://www.unpac.me/results/2965bef6-9415-4db4-aa70-a81a8a571914/
SH256 hash:
c210434fcb39927f4a0d0a844a1a883f8274bc3b9e6d3e6e883f8072f316ca6a
MD5 hash:
74a962db45d6ab6c859ff627987bf1f6
SHA1 hash:
893b19a862fca02a5ec9ab0cd270a4970849ecb1
Link:
https://www.unpac.me/results/2965bef6-9415-4db4-aa70-a81a8a571914/
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/c210434fcb39927f4a0d0a844a1a883f8274bc3b9e6d3e6e883f8072f316ca6a

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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/151423/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-06 08:00:08 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0023] Execution::Install Additional Program