MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36. 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 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36
SHA3-384 hash: d629c88d39f2b646dce31bc9886e4d8f27c616e12de44f5bcd2c30502e3beec51186ca3c5e7da3a4e3b921e6440a8127
SHA1 hash: 660c0b804a0c522f1bc6ac53f12e28cece51d08c
MD5 hash: da1dce9bf9fc0777b731f7f919315c3d
humanhash: golf-grey-island-apart
File name:da1dce9bf9fc0777b731f7f919315c3d
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:516'792 bytes
First seen:2021-07-24 18:17:17 UTC
Last seen:2021-07-24 18:46:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:gig5cGyS7RXusazvEGSTC5eHLCyz2TN7+Lz:u5cm1XkzNS9CVREz
Threatray 2'024 similar samples on MalwareBazaar
TLSH T110B41200FF1AE413FE2E2BB6FCD30CE58A34A9053E57E74A667129089E753D418176E6
dhash icon 341431a5d1d94626 (1 x ArkeiStealer)
Reporter zbetcheckin
Tags:32 ArkeiStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
da1dce9bf9fc0777b731f7f919315c3d
Verdict:
Malicious activity
Analysis date:
2021-07-24 18:19:57 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/bcc9aba1-8f04-4786-9f61-cac539ed1518

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/173935/
Detection(s):
SecuriteInfo.com.UDS.Trojan.MSIL.Chapak.gen.10224.2176.UNOFFICIAL
Create hunting rule

Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0cd58e3f-4826-43e3-9966-eedf746a9d68
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/821290
Signature
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 453697 Sample: UST2iomomf Startdate: 24/07/2021 Architecture: WINDOWS Score: 92 41 Multi AV Scanner detection for domain / URL 2->41 43 Found malware configuration 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 2 other signatures 2->47 8 UST2iomomf.exe 3 2->8         started        process3 file4 27 C:\Users\user\AppData\...\UST2iomomf.exe.log, ASCII 8->27 dropped 49 Injects a PE file into a foreign processes 8->49 12 UST2iomomf.exe 92 8->12         started        17 UST2iomomf.exe 8->17         started        signatures5 process6 dnsIp7 37 116.202.183.50, 49747, 80 HETZNER-ASDE Germany 12->37 39 shpak125.tumblr.com 74.114.154.22, 443, 49745 AUTOMATTICUS Canada 12->39 29 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 12->29 dropped 31 C:\Users\user\AppData\...\mozglue[1].dll, PE32 12->31 dropped 33 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 12->33 dropped 35 9 other files (none is malicious) 12->35 dropped 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->51 53 Tries to harvest and steal browser information (history, passwords, etc) 12->53 55 Tries to steal Crypto Currency Wallets 12->55 19 cmd.exe 1 12->19         started        file8 signatures9 process10 process11 21 taskkill.exe 1 19->21         started        23 conhost.exe 19->23         started        25 timeout.exe 1 19->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36/
Threat name:
ByteCode-MSIL.Trojan.Chapak
Create hunting rule
Status:
Malicious
First seen:
2021-07-24 15:06:44 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
474a473bf46fdbfb5a9344937674c1455d764e74c2cd8892da7d59f68ffadd5c
ArkeiStealer
72a98fffbbe2b14ad3e5a7e80d452ffcbcf84d925c8b07c5d638cfb49181a287
ArkeiStealer
87be6f628553d89007fd8f7d0758d42906f2ee7d84ca18e961cb463921061a42
ArkeiStealer
8ed9f410b41e51f09304e5cdadc4d61f82562c9ee15be810e063f2f568812dd0
ArkeiStealer
adb98685d3d6a8fa5e90b6fd9d458601d874718d5815f8aab66728ba9d067440
ArkeiStealer
b8b2077a4b818a377153b24328151956d8b13a16bda54c82c9be894fa87eed91
ArkeiStealer
c272907c7c9d138993e44dd4e837cd6ac26ce14378acc962a3c4acda14726d42
ArkeiStealer
ce6008f9953e597c3c406a60f3efe1157c4c8eccd5d9d8070a621dfe2f12204b
ArkeiStealer
+ 2'014 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:903 discovery spyware stealer suricata
Link:
https://tria.ge/reports/210724-3n8v7h7hmx/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Kills process with taskkill
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses 2FA software files, possible credential harvesting
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
Vidar Stealer
Vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
Malware Config
C2 Extraction:
https://shpak125.tumblr.com/
Unpacked files
SH256 hash:
4102e56cc31d6d23a4ee8e7151d24b72316d61dc7834b702b9ad2ce83a4ae0f3
MD5 hash:
1511353c728c2512290b186907315efc
SHA1 hash:
dddd2393f710619aa90f6f59d0df3f26155d5eb6
Link:
https://www.unpac.me/results/12af220c-a65c-4c0a-9d93-aeaa95ee50d7/
SH256 hash:
fa213014f79e33c2dde7b1567b0741cbc43ba31c30f5acd266c3a5a132685c80
MD5 hash:
bad234538deada3cdae7b5fb8ee6c8a3
SHA1 hash:
7b6c38d31e4548006857ed29329193b2297008b1
Link:
https://www.unpac.me/results/12af220c-a65c-4c0a-9d93-aeaa95ee50d7/
SH256 hash:
ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36
MD5 hash:
da1dce9bf9fc0777b731f7f919315c3d
SHA1 hash:
660c0b804a0c522f1bc6ac53f12e28cece51d08c
Link:
https://www.unpac.me/results/12af220c-a65c-4c0a-9d93-aeaa95ee50d7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36

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:INDICATOR_SUSPICOIUS_EXE_WindDefender_AntiEmaulation
Create hunting rule
Author:ditekSHen
Description:Detects executables containing potential Windows Defender anti-emulation checks
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:pe_imphash
Create hunting rule
Rule name:RedOctoberPluginCollectInfo
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload

File information

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

Web download

ArkeiStealer

Executable exe ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1478752/
Cape
Cape
https://www.capesandbox.com/analysis/173935/

Comments


Avatar
zbet commented on 2021-07-24 18:17:17 UTC

url : hxxp://37.0.11.8/WW/file2.exe