MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b33d85386890e691d20cd76ee9f39b083f54143b597701e3a1687bcf832fb0ca. 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


ArkeiStealer


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b33d85386890e691d20cd76ee9f39b083f54143b597701e3a1687bcf832fb0ca
SHA3-384 hash: f706c7dc6de42e82a81e9f9f402422ff33b39ea386629568f7f27a986f211072012d08759b0f0633af8e1360db5db0b2
SHA1 hash: 2bdc67502dc92d021ce64e92c7efcbdc6a00ad76
MD5 hash: d7a52acd99d213cdeb1f91ed193868d0
humanhash: romeo-video-mexico-papa
File name:d7a52acd99d213cdeb1f91ed193868d0.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:440'320 bytes
First seen:2020-11-19 09:28:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:WRdBHMlU8LFvDoNHzf6YwA776D3n5JW8ayEAO2jE7zRDdMLhs:Wt8LFvU1z/776D3TW8aQHIxGLy
Threatray 432 similar samples on MalwareBazaar
TLSH A994023151A5FE57EB7B1EF1E45227440FA97427EA30DA2DBECC01DA21A1B089F14E72
Reporter abuse_ch
Tags:ArkeiStealer exe


Avatar
abuse_ch
ArkeiStealer C2:
http://taenaiaa.ac.ug/

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
DNS request
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
Connection attempt to an infection source
Stealing user critical data
Launching a tool to kill processes
Result
Verdict:
SUSPICIOUS
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:
84 / 100
Link:
https://www.joesandbox.com/analysis/542641
Signature
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
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 AntiVM_3
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 320421 Sample: NNWJLx3vu1.exe Startdate: 19/11/2020 Architecture: WINDOWS Score: 84 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected AntiVM_3 2->36 38 Yara detected Vidar stealer 2->38 40 3 other signatures 2->40 8 NNWJLx3vu1.exe 3 2->8         started        process3 file4 22 C:\Users\user\AppData\...22NWJLx3vu1.exe.log, ASCII 8->22 dropped 11 NNWJLx3vu1.exe 188 8->11         started        process5 dnsIp6 32 taenaiaa.ac.ug 217.8.117.77, 49729, 80 CREXFEXPEX-RUSSIARU Russian Federation 11->32 24 C:\ProgramData\vcruntime140.dll, PE32 11->24 dropped 26 C:\ProgramData\sqlite3.dll, PE32 11->26 dropped 28 C:\ProgramData\softokn3.dll, PE32 11->28 dropped 30 4 other files (none is malicious) 11->30 dropped 42 Tries to harvest and steal browser information (history, passwords, etc) 11->42 44 Tries to steal Crypto Currency Wallets 11->44 16 cmd.exe 1 11->16         started        file7 signatures8 process9 process10 18 taskkill.exe 1 16->18         started        20 conhost.exe 16->20         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b33d85386890e691d20cd76ee9f39b083f54143b597701e3a1687bcf832fb0ca/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 00:27:39 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wm6ykodisdtjduqm25xot443ba7vifb3lf3qdy5bnb547azpwdfa._file
Verdict:
malicious
Similar samples:
033dd7d02172855d2e61e1dcfae24bdeb9136310503e06bf7079ef78db9422ae
ArkeiStealer
0c38c10261c2ae14822b19d1ebc54ad4ab417961b5f324716bb85a2038e3bb15
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1553300557f17e7cb62c914616267bc733854b98a0edc5215d901cc4f8e4d0f0
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483c603c9fb09c2e908d782f7e6f3f04e6e26b7eaaf8ac637733a4e4a32c80e7
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61198dcb525d78061585053ddc30e99ca70842899622e333eb64d3b68ee7a167
ArkeiStealer
b30f264fda73db6970c313776095289e5fc0ee77f6be19010e2f9e125205e845
ArkeiStealer
bad1feef0055835db4f894b4885b48d596788458bc9095d4c0af9ec36a97077d
ArkeiStealer
bcb474ac919440674135c673d8c6a0fc8015a63a15b2849c3346f74a716b5249
ArkeiStealer
c09ced50c5dacaf28676dfaa0abff8f4b53fb4516c93fa5acd000e481841dd7b
ArkeiStealer
ed9d96725b88ce0a3caee6d98c11369fb84a1d7eca3847db66abe63c49955f73
ArkeiStealer
+ 422 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer persistence spyware
Link:
https://tria.ge/reports/201119-33bmyzzggn/
Behaviour
Checks processor information in registry
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
JavaScript code in executable
Reads user/profile data of web browsers
Deletes itself
Loads dropped DLL
Oski
Unpacked files
SH256 hash:
b33d85386890e691d20cd76ee9f39b083f54143b597701e3a1687bcf832fb0ca
MD5 hash:
d7a52acd99d213cdeb1f91ed193868d0
SHA1 hash:
2bdc67502dc92d021ce64e92c7efcbdc6a00ad76
Link:
https://www.unpac.me/results/aae7451f-1921-496a-9019-01acab7fdf80/
SH256 hash:
66e051660c95e09990f26a89ecb994fb0b93520a79f4e9616238828155b8edaf
MD5 hash:
ca66e466f04da8027c9ba7107026fa39
SHA1 hash:
2aa10c0f32dae6956852c9a73fa1dbd6fe426bf7
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/aae7451f-1921-496a-9019-01acab7fdf80/
SH256 hash:
cb951f1d2b5460456aad0d89cef1216d9be5e51784d11a92447d43e96177bd5e
MD5 hash:
8cd5d2014866f4ef60802ff1826998a6
SHA1 hash:
8ff75946905d0b117080cc5a07e6e0bbea4e9bbd
Link:
https://www.unpac.me/results/aae7451f-1921-496a-9019-01acab7fdf80/
SH256 hash:
1a5477c2bc79ed4f7459463ff554d4f587ef8ea2317822ad6596433def2d3692
MD5 hash:
38f4b6f55400e9823c66d99ad4468051
SHA1 hash:
fc91f544f47c3e3aa0e811f18d745ae3e3f0ad1e
Link:
https://www.unpac.me/results/aae7451f-1921-496a-9019-01acab7fdf80/
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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.

Web download

ArkeiStealer

Executable exe b33d85386890e691d20cd76ee9f39b083f54143b597701e3a1687bcf832fb0ca

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/831917/
  
Delivery method
Distributed via web download

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