MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81f0ea7ee9873de0118f7a630ea06da4072c8bd582ed4dc753a0124e1adb1584. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81f0ea7ee9873de0118f7a630ea06da4072c8bd582ed4dc753a0124e1adb1584
SHA3-384 hash: 2e5f1514ed47973f16c1b4374d3ed3cb1fbff1b1362ea6c39c03559e990addd24f75ab828c318471514c4fe182245f45
SHA1 hash: 2206daf1a6e4ff8706df648888caa3bdbe5a8d6e
MD5 hash: b145481b3a46c0e94f36eb367b4fb547
humanhash: green-timing-mockingbird-zulu
File name:b145481b3a46c0e94f36eb367b4fb547.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:514'152 bytes
First seen:2021-07-28 18:05:32 UTC
Last seen:2021-07-28 18:57:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:YEF5nudgzNv4IG3MQLQ+RSKua8PB3JsdAZvfGA2ngUSA:YE+dgSIV0Q+vbSsdAZHOxSA
Threatray 2'126 similar samples on MalwareBazaar
TLSH T1CCB412A2EF797243F8DC2D749CC359E6DE748DB60C43870A569139258E7E7C8EC012A5
dhash icon dab48e18ac7c9c01 (1 x ArkeiStealer)
Reporter abuse_ch
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b145481b3a46c0e94f36eb367b4fb547.exe
Verdict:
Malicious activity
Analysis date:
2021-07-28 18:12:32 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1f195863-875e-4689-bd3d-5f962291adb7

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/174773/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.37305195.31467.3584.UNOFFICIAL
Create hunting rule

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.
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e5faf113-aa7c-42b3-886e-faad1331eb40
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/823388
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 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
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 455801 Sample: dPMAyzldA1.exe Startdate: 28/07/2021 Architecture: WINDOWS Score: 92 43 Found malware configuration 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Yara detected Vidar 2->47 49 2 other signatures 2->49 8 dPMAyzldA1.exe 3 2->8         started        process3 file4 29 C:\Users\user\AppData\...\dPMAyzldA1.exe.log, ASCII 8->29 dropped 51 Injects a PE file into a foreign processes 8->51 12 dPMAyzldA1.exe 92 8->12         started        17 dPMAyzldA1.exe 8->17         started        19 dPMAyzldA1.exe 8->19         started        signatures5 process6 dnsIp7 39 116.202.183.50, 49722, 80 HETZNER-ASDE Germany 12->39 41 shpak125.tumblr.com 74.114.154.18, 443, 49721 AUTOMATTICUS Canada 12->41 31 C:\Users\user\AppData\...\softokn3[1].dll, PE32 12->31 dropped 33 C:\Users\user\AppData\...\freebl3[1].dll, PE32 12->33 dropped 35 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 12->35 dropped 37 9 other files (none is malicious) 12->37 dropped 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->53 55 Tries to harvest and steal browser information (history, passwords, etc) 12->55 57 Tries to steal Crypto Currency Wallets 12->57 21 cmd.exe 1 12->21         started        file8 signatures9 process10 process11 23 taskkill.exe 1 21->23         started        25 conhost.exe 21->25         started        27 timeout.exe 1 21->27         started       
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Chapak
Create hunting rule
Status:
Malicious
First seen:
2021-07-27 08:18:52 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
2636faa0941a7fd9a889aeb2e4b94fe95f538a588642750ac87d635fd68b5537
ArkeiStealer
3cee28ef52c59c99b841c6927f5085e483523cb8b606ff9ce5d60b3c13574545
ArkeiStealer
4de4e37b774228061ba08618429b6b5a7d4d1d07cf912035d31a3c5c6150b95e
ArkeiStealer
87be6f628553d89007fd8f7d0758d42906f2ee7d84ca18e961cb463921061a42
ArkeiStealer
91949edb9145bda3b1336a5513c44707a86300ca5a378411c9bf8800b8127db9
ArkeiStealer
c272907c7c9d138993e44dd4e837cd6ac26ce14378acc962a3c4acda14726d42
ArkeiStealer
ca77fa6ea006bb61812c11571551a058721ae6e829bf38afd8ba1c17d1d65e36
ArkeiStealer
ce6008f9953e597c3c406a60f3efe1157c4c8eccd5d9d8070a621dfe2f12204b
ArkeiStealer
+ 2'116 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:921 discovery spyware stealer suricata
Link:
https://tria.ge/reports/210728-8eb693hafn/
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:
e07c9a97ea87029acbe24d7e62b5cf4093baf048090b538cb0093677802e032d
MD5 hash:
17dda5f2a162c4b77145f3199fc598a8
SHA1 hash:
b31dd94cf4538c320dee22213ad6595789d6056e
Link:
https://www.unpac.me/results/a38ec8b5-7a86-4bf7-b37b-14a240ec57eb/
SH256 hash:
1ebca3bb092ebef3bd52a7a0ef6e62f286f6c75a2bd226cb33b83dfae1511927
MD5 hash:
d35ace1be17d8a514fe076e40384ded7
SHA1 hash:
64102a7ffc474c1799cf5f07dc0d22191ca43100
Link:
https://www.unpac.me/results/a38ec8b5-7a86-4bf7-b37b-14a240ec57eb/
SH256 hash:
81f0ea7ee9873de0118f7a630ea06da4072c8bd582ed4dc753a0124e1adb1584
MD5 hash:
b145481b3a46c0e94f36eb367b4fb547
SHA1 hash:
2206daf1a6e4ff8706df648888caa3bdbe5a8d6e
Link:
https://www.unpac.me/results/a38ec8b5-7a86-4bf7-b37b-14a240ec57eb/
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/81f0ea7ee9873de0118f7a630ea06da4072c8bd582ed4dc753a0124e1adb1584

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 81f0ea7ee9873de0118f7a630ea06da4072c8bd582ed4dc753a0124e1adb1584

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1478748/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/174773/

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