MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4
SHA3-384 hash: e4362fbf898e9ccc949d7d9be58fb61d6a65ae447e1dea64d2c243b82f1fff456f786f1849ad984be1d7c78dbaea2dec
SHA1 hash: 6b5aafbd3c9513a45050f06aefed55bde063dc7b
MD5 hash: b202019431b797bab7a883e50963dd02
humanhash: september-mango-twenty-nineteen
File name:b202019431b797bab7a883e50963dd02.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:1'543'168 bytes
First seen:2022-04-09 07:16:57 UTC
Last seen:2022-04-09 07:41:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:7+aRei1sFTkxQSW49wORslzactMB3oPUhX1vS8aYekEZTeBeh:Bl1sxZ49NOlzac69ejZceh
Threatray 5'685 similar samples on MalwareBazaar
TLSH T13965BE0A633D0E21D2ED1B7A0A2F820F41699199DF406EF56A5BADEC38D3F4D4D2C6D1
Reporter abuse_ch
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
288
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b202019431b797bab7a883e50963dd02.exe
Verdict:
Suspicious activity
Analysis date:
2022-04-09 07:18:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/98bbeb72-9546-4e90-b295-f7a57675507c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/262274/
Detection(s):
SecuriteInfo.com.INDICATOR_SUSPICIOUS_EXE_Embedded_Gzip_B64Encoded_File.31047.31624.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Reading critical registry keys
Creating a window
Delayed writing of the file
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Forced system process termination
Searching for synchronization primitives
Launching the process to interact with network services
Moving of the original file
Stealing user critical data
Unauthorized injection to a recently created process
Launching a tool to kill processes
Unauthorized injection to a system process
Forced shutdown of a browser
Adding exclusions to Windows Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/625132efd149c40acb101b5a/reports/9c4c5b98-0ec3-4eaf-8d79-0b52841d680b/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dda60370-7b36-43e7-8a55-38ca677d3858
Result
Threat name:
Remcos Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/973696
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Adds a new user with administrator rights
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to hide user accounts
Creates an autostart registry key pointing to binary in C:\Windows
Creates autostart registry keys with suspicious names
Disables UAC (registry)
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Found evasive API chain (may stop execution after checking mutex)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Moves itself to temp directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Active Directory User Backdoors
Sigma detected: Bypass UAC via CMSTP
Sigma detected: File Created with System Process Name
Sigma detected: Hurricane Panda Activity
Sigma detected: Suspicious Process Parents
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 606180 Sample: 22EYWVRjLb.exe Startdate: 09/04/2022 Architecture: WINDOWS Score: 100 78 185.157.162.75, 1212, 49699, 49700 OBE-EUROPEObenetworkEuropeSE Sweden 2->78 80 192.168.2.1 unknown unknown 2->80 88 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->88 90 Found malware configuration 2->90 92 Malicious sample detected (through community Yara rule) 2->92 94 19 other signatures 2->94 10 22EYWVRjLb.exe 1 2->10         started        14 svchost.exe 2->14         started        16 svchost.exe 1 1 2->16         started        19 4 other processes 2->19 signatures3 process4 dnsIp5 72 C:\Users\user\AppData\...\22EYWVRjLb.exe.log, ASCII 10->72 dropped 104 Moves itself to temp directory 10->104 106 Writes to foreign memory regions 10->106 108 Allocates memory in foreign processes 10->108 110 Injects a PE file into a foreign processes 10->110 21 winver.exe 155 10->21         started        112 Changes security center settings (notifications, updates, antivirus, firewall) 14->112 76 127.0.0.1 unknown unknown 16->76 file6 signatures7 process8 dnsIp9 82 95.217.244.41, 49692, 80 HETZNER-ASDE Germany 21->82 84 t.me 149.154.167.99, 443, 49691 TELEGRAMRU United Kingdom 21->84 86 crypto-hunt.net 188.114.96.7, 49695, 80 CLOUDFLARENETUS European Union 21->86 64 C:\Users\user\AppData\...\sysadmin[1].exe, PE32 21->64 dropped 66 C:\ProgramData\FFZMCR8IIL06B8DOVAYC.exe, PE32 21->66 dropped 68 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 21->68 dropped 70 11 other files (none is malicious) 21->70 dropped 96 Found evasive API chain (may stop execution after checking mutex) 21->96 98 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->98 100 Tries to steal Mail credentials (via file / registry access) 21->100 102 3 other signatures 21->102 26 FFZMCR8IIL06B8DOVAYC.exe 7 7 21->26         started        30 cmd.exe 1 21->30         started        file10 signatures11 process12 file13 74 C:\Windows\Microsoft.NET\...\svchost.exe, PE32 26->74 dropped 114 Antivirus detection for dropped file 26->114 116 Multi AV Scanner detection for dropped file 26->116 118 Creates autostart registry keys with suspicious names 26->118 120 8 other signatures 26->120 32 net.exe 26->32         started        34 net.exe 26->34         started        36 net.exe 26->36         started        44 5 other processes 26->44 38 conhost.exe 30->38         started        40 taskkill.exe 30->40         started        42 timeout.exe 30->42         started        signatures14 process15 process16 46 conhost.exe 32->46         started        48 net1.exe 32->48         started        50 conhost.exe 34->50         started        52 net1.exe 34->52         started        54 conhost.exe 36->54         started        56 net1.exe 36->56         started        58 conhost.exe 44->58         started        60 conhost.exe 44->60         started        62 3 other processes 44->62
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-09 05:08:38 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=equjhzl4vj3ruyuiu7jedzimwuokn5isbvsgpmaptnc7uagyzosa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2a5084f190559b5e7be436f6b91952453727da22d83fd50a1f5dad8800082eaf
ArkeiStealer
625f25dedd3f7e114dc89cff907dfec350df5cbb4efa09942f2b5ed9950c1216
ArkeiStealer
7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333
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8327e650ee6c38d5cefeb290782d0227e2fd282a1d0c292d76505d07309676a8
ArkeiStealer
99e39ef9a5267ed9790fbef614fa3a0054025c1cb866295e9e320bc95b128280
ArkeiStealer
a14fcc6851b168544feec2b3889ccff2bf11306f4d420731b471b249a16af089
ArkeiStealer
c530ab34e439bbcaf995290504072a5f77ec085e2ef485e4ef324b7a957f5738
ArkeiStealer
cc93c7587dba9e4af2265a77a349230cb8ab0a0d8c524f4cfad4886fad7a34ab
ArkeiStealer
+ 5'675 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar stealer
Link:
https://tria.ge/reports/220409-h4cw9sehc7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Vidar Stealer
Vidar
Unpacked files
SH256 hash:
242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4
MD5 hash:
b202019431b797bab7a883e50963dd02
SHA1 hash:
6b5aafbd3c9513a45050f06aefed55bde063dc7b
Link:
https://www.unpac.me/results/a2233e47-e6e9-4ced-a890-999cfcfdd924/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4

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:BlackGuard_Rule
Create hunting rule
Author:Jiho Kim
Description:Yara rule for BlackGuarad Stealer v1.0 - v3.0
Reference:https://www.virustotal.com/gui/file/67843d45ba538eca29c63c3259d697f7e2ba84a3da941295b9207cdb01c85b71/detection
Rule name:INDICATOR_SUSPICIOUS_EXE_Embedded_Gzip_B64Encoded_File
Create hunting rule
Author:ditekSHen
Description:Detects executables containing bas64 encoded gzip files
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifcats referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_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: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 242893e57caa771a6288a7d241e50cb51ca6f5120d6467b00f9b45fa00d8cba4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2137245/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/262274/

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