MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c. 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


Vidar


Vendor detections: 18


Intelligence 18 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
SHA3-384 hash: 9769455825f7fee6875e61067bf59b9890e26657f2c96603efe773554f62b40fe8edde46d0f37a9ce90bfd7fccc82c5a
SHA1 hash: 186940c774dd3e08195d6bab46c2b0170300a36d
MD5 hash: c8a2d55c143d25ea7163ff04da854cd8
humanhash: floor-fanta-solar-south
File name:file
Download: download sample
Signature Vidar
Create hunting rule
File size:289'320 bytes
First seen:2024-09-13 12:38:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:j1JhitNRsow2ECN3mxuJhe1gRjJ0WKBfTLia1bl9qRrEO:otTkFM3Ne1yyWKFLiSblwRrEO
Threatray 38 similar samples on MalwareBazaar
TLSH T1725413BA13CE125DECEF0E388C31C17F7428B69260530D9B276789A95687706BE71B35
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter Bitsight
Tags:exe vidar


Avatar
Bitsight
url: http://147.45.44.104/prog/66e40b26aa4b0_vfdg15.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
413
Origin country :
US US
Vendor Threat Intelligence
Malware family:
amadey
Create hunting rule
ID:
1
File name:
acentric[1].exe
Verdict:
Malicious activity
Analysis date:
2024-09-14 02:25:00 UTC
Tags:
xor-url generic amadey botnet stealer berbew evasion privateloader opendir loader vidar telegram
Link:
https://app.any.run/tasks/06b86811-cb95-46bb-8ca4-8c2ebfa59120

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Pwsx-10035189-0
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e4326802c7d3d9942f759c
Tags:
Banker Encryption Generic Network Static Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Creating a file in the %temp% directory
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Running batch commands
Creating a process with a hidden window
Forced shutdown of a system process
Connection attempt to an infection source
Sending a TCP request to an infection source
Query of malicious DNS domain
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/66e432675d5cad8d8f23872a/reports/3285a7d9-e950-438d-bbe0-8b0408b919fd/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6ce0869c-6361-4052-893f-7888c54047e3
Result
Threat name:
LummaC, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1510793
Signature
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Found evasive API chain (may stop execution after checking locale)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
LummaC encrypted strings found
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
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)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected LummaC Stealer
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1510793 Sample: file.exe Startdate: 13/09/2024 Architecture: WINDOWS Score: 100 108 t.me 2->108 110 stitchmiscpaew.shop 2->110 112 10 other IPs or domains 2->112 134 Multi AV Scanner detection for domain / URL 2->134 136 Suricata IDS alerts for network traffic 2->136 138 Found malware configuration 2->138 140 15 other signatures 2->140 12 file.exe 2 2->12         started        signatures3 process4 file5 92 C:\Users\user\AppData\Local\...\file.exe.log, CSV 12->92 dropped 162 Contains functionality to inject code into remote processes 12->162 164 Writes to foreign memory regions 12->164 166 Allocates memory in foreign processes 12->166 168 Injects a PE file into a foreign processes 12->168 16 RegAsm.exe 1 181 12->16         started        21 conhost.exe 12->21         started        signatures6 process7 dnsIp8 94 t.me 149.154.167.99, 443, 49720, 49763 TELEGRAMRU United Kingdom 16->94 96 5.75.214.132, 443, 49721, 49722 HETZNER-ASDE Germany 16->96 98 147.45.44.104, 49746, 49761, 80 FREE-NET-ASFREEnetEU Russian Federation 16->98 76 C:\Users\user\...\66e40b2e8a52e_lfsdj[1].exe, PE32 16->76 dropped 78 C:\Users\user\...\66e40b244964c_vdcsg[1].exe, PE32 16->78 dropped 80 C:\Users\user\...\66e40b2200f51_svfdsk[1].exe, PE32 16->80 dropped 82 9 other files (7 malicious) 16->82 dropped 116 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->116 118 Found many strings related to Crypto-Wallets (likely being stolen) 16->118 120 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 16->120 122 4 other signatures 16->122 23 HJJKFBGCFH.exe 2 16->23         started        26 KJKKJKEHDB.exe 16->26         started        28 BGDGHJEHJJ.exe 2 16->28         started        30 cmd.exe 16->30         started        file9 signatures10 process11 signatures12 142 Multi AV Scanner detection for dropped file 23->142 144 Writes to foreign memory regions 23->144 146 Allocates memory in foreign processes 23->146 32 RegAsm.exe 33 23->32         started        37 conhost.exe 23->37         started        148 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 26->148 150 Injects a PE file into a foreign processes 26->150 39 conhost.exe 26->39         started        41 RegAsm.exe 26->41         started        43 RegAsm.exe 26->43         started        152 LummaC encrypted strings found 28->152 45 RegAsm.exe 28->45         started        47 conhost.exe 28->47         started        49 RegAsm.exe 28->49         started        51 2 other processes 30->51 process13 dnsIp14 100 46.8.231.109, 49751, 49759, 49760 FIORD-ASIP-transitoperatorinRussiaUkraineandBaltics Russian Federation 32->100 84 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 32->84 dropped 86 C:\Users\user\AppData\...\softokn3[1].dll, PE32 32->86 dropped 88 C:\Users\user\...\66e40b2e8a52e_lfsdj[1].exe, PE32 32->88 dropped 90 7 other files (5 malicious) 32->90 dropped 124 Tries to steal Mail credentials (via file / registry access) 32->124 126 Tries to harvest and steal ftp login credentials 32->126 128 Tries to harvest and steal browser information (history, passwords, etc) 32->128 130 2 other signatures 32->130 53 cmd.exe 32->53         started        55 cmd.exe 32->55         started        102 stitchmiscpaew.shop 104.21.26.150, 443, 49754, 49769 CLOUDFLARENETUS United States 45->102 104 basedsymsotp.shop 104.21.78.130, 443, 49749, 49764 CLOUDFLARENETUS United States 45->104 106 3 other IPs or domains 45->106 file15 signatures16 process17 process18 57 userGIEHIDHJDB.exe 53->57         started        60 conhost.exe 53->60         started        62 userEHCFBFBAEB.exe 55->62         started        64 conhost.exe 55->64         started        signatures19 154 Multi AV Scanner detection for dropped file 57->154 156 Writes to foreign memory regions 57->156 158 Allocates memory in foreign processes 57->158 66 RegAsm.exe 57->66         started        69 conhost.exe 57->69         started        160 Injects a PE file into a foreign processes 62->160 71 RegAsm.exe 62->71         started        74 conhost.exe 62->74         started        process20 dnsIp21 132 Tries to harvest and steal browser information (history, passwords, etc) 66->132 114 23.192.247.89, 443, 49773 AKAMAI-ASUS United States 71->114 signatures22
Score:
73%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2024-09-13 12:39:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vq4ztzbjazemn5r25yhcbycl4ue3pqfkot5wb5pg3pgqqpr3pzga._file
Verdict:
malicious
Similar samples:
4ed6d72fef68c583439e803871226e76588ce6436d10362011b21763e0ccf176
Vidar
5f20ea0b27db955d122e3cc2a7ad411550bb4b73692fb474ba01aeed0f182979
Vidar
70c7a307852a0d3fbf20f964e1c191ddea93c75907c45e203edc1badb6978a47
Vidar
cb8a4cb7d45a5f0828e0134d67947186498b8db141890ce488f6aa0240592665
Vidar
d401c3671807726e777b0a0814c4e4f55cf41684746813cad3a7ebbd1d3d7d71
Vidar
+ 28 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar credential_access discovery spyware stealer
Link:
https://tria.ge/reports/240913-pvlw5s1gqd/
Behaviour
Checks processor information in registry
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Browser Information Discovery
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks installed software on the system
Reads user/profile data of web browsers
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
Detect Vidar Stealer
Vidar
Malware Config
C2 Extraction:
https://t.me/edm0d
https://steamcommunity.com/profiles/76561199768374681
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3058ef9d-6072-4a3d-b9ea-b6148a54987f
Unpacked files
SH256 hash:
0baa56d28df921dccfec3190273c4d1d912ab509f777965c0203fdd0d601f005
MD5 hash:
b6f065db394f78b80bb749e2d3f3dccf
SHA1 hash:
10d62d5f3894587d1f4d3c7f60b012f622d803b9
Detections:
VidarStealer
Create hunting rule
Link:
https://www.unpac.me/results/e3f0b17b-cfcf-4969-95e9-84c773bedfcb/
Parent samples :
ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
393fdc548e466ad14530d328eae10582ee3397539b118bd37040f2489d14d004
a1d7a27d0db33680df06c7b7ac1a58ba17c18843af52782f57ec7f94bb023a75
434f2dc20a710077ba861c9a118223c51f04662d6edcb492812c6468e4cede48
9aa969169a955de9644611b854ee7314349c4c7e9dc9be545b392cd5db002942
SH256 hash:
0ab41930f0a18d7629031bf5cd9a8c7090c13983c1d7567b9018185f0fa18f0d
MD5 hash:
2890a00ef6943ed98e2b7c6e3e49ae1c
SHA1 hash:
9072a751e68fe39222aebc87ffb898a423310ce9
Link:
https://www.unpac.me/results/e3f0b17b-cfcf-4969-95e9-84c773bedfcb/
SH256 hash:
ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
MD5 hash:
c8a2d55c143d25ea7163ff04da854cd8
SHA1 hash:
186940c774dd3e08195d6bab46c2b0170300a36d
Link:
https://www.unpac.me/results/e3f0b17b-cfcf-4969-95e9-84c773bedfcb/
Malware family:
Vidar.A
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ac3999e42906/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
vidar
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c

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:Detect_APT29_WINELOADER_Backdoor
Create hunting rule
Author:daniyyell
Description:Detects APT29's WINELOADER backdoor variant used in phishing campaigns, this rule also detect bad pdf,shtml,htm and vbs or maybe more depends
Reference:https://cloud.google.com/blog/topics/threat-intelligence/apt29-wineloader-german-political-parties
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Web download

Vidar

Executable exe ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3170531/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments