MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4. 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


Stealc


Vendor detections: 18


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

SHA256 hash: 91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
SHA3-384 hash: b44d39aa6c98f0c1605992e4515076f82b67c1c52634483774fb0e24f32a46721f8105e3d4106a773397ae6c9dbb0830
SHA1 hash: c7d2df2f68fefa1b3b9ddc61809966eaa6daef49
MD5 hash: 68076ff4fb08f203da72e47f536db2d3
humanhash: hamper-orange-high-lactose
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:210'984 bytes
First seen:2024-09-13 09:52:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 3072:0lyVDc5YYBO1w3EiWJ7UYsYz3PLk3l6z0u5xTewBj8L5R3yz2VlI/8agaOFrMKYp:WEw0iWhWifM6z0uHqwJS5xne8XZkEO
Threatray 32 similar samples on MalwareBazaar
TLSH T14A24121626CC4A21D8F487B94AA27519FDE8E6616841EBEEC0DF526E1C8730037F573A
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 Stealc


Avatar
Bitsight
url: http://147.45.44.104/prog/66e40b2200f51_svfdsk.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
379
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
Verdict:
Malicious activity
Analysis date:
2024-09-13 19:24:02 UTC
Tags:
stealer stealc loader
Link:
https://app.any.run/tasks/da254254-b224-4a03-9d9d-936a3a53fad2

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:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e40b8076bc4542b0498eae
Tags:
Encryption Static
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Forced shutdown of a system process
Connection attempt to an infection source
Unauthorized injection to a system process
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/66e40b81b4dba832f0f6263d/reports/c4dee69d-09ec-4794-9ae7-dd1cad88a7a2/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
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:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/106e85a4-6421-46ba-910c-47c83f80367b
Result
Threat name:
LummaC, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1510727
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 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: 1510727 Sample: file.exe Startdate: 13/09/2024 Architecture: WINDOWS Score: 100 119 t.me 2->119 121 stitchmiscpaew.shop 2->121 123 10 other IPs or domains 2->123 165 Suricata IDS alerts for network traffic 2->165 167 Found malware configuration 2->167 169 Antivirus detection for URL or domain 2->169 171 14 other signatures 2->171 15 file.exe 2 2->15         started        signatures3 process4 file5 117 C:\Users\user\AppData\Local\...\file.exe.log, CSV 15->117 dropped 141 Contains functionality to inject code into remote processes 15->141 143 Writes to foreign memory regions 15->143 145 Allocates memory in foreign processes 15->145 147 Injects a PE file into a foreign processes 15->147 19 RegAsm.exe 39 15->19         started        24 conhost.exe 15->24         started        signatures6 process7 dnsIp8 125 46.8.231.109, 49707, 49753, 80 FIORD-ASIP-transitoperatorinRussiaUkraineandBaltics Russian Federation 19->125 127 147.45.44.104, 49708, 49748, 80 FREE-NET-ASFREEnetEU Russian Federation 19->127 93 C:\Users\user\AppData\...\softokn3[1].dll, PE32 19->93 dropped 95 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 19->95 dropped 97 C:\Users\user\AppData\...\mozglue[1].dll, PE32 19->97 dropped 99 13 other files (9 malicious) 19->99 dropped 173 Tries to steal Mail credentials (via file / registry access) 19->173 175 Found many strings related to Crypto-Wallets (likely being stolen) 19->175 177 Found evasive API chain (may stop execution after checking locale) 19->177 179 3 other signatures 19->179 26 cmd.exe 1 19->26         started        28 cmd.exe 1 19->28         started        file9 signatures10 process11 process12 30 userEBAEBFIIEC.exe 2 26->30         started        33 conhost.exe 26->33         started        35 userBAAAKJDAAF.exe 2 28->35         started        37 conhost.exe 28->37         started        signatures13 197 Multi AV Scanner detection for dropped file 30->197 199 Writes to foreign memory regions 30->199 201 Allocates memory in foreign processes 30->201 39 RegAsm.exe 1 140 30->39         started        44 conhost.exe 30->44         started        203 Injects a PE file into a foreign processes 35->203 205 LummaC encrypted strings found 35->205 46 RegAsm.exe 35->46         started        48 conhost.exe 35->48         started        process14 dnsIp15 131 t.me 149.154.167.99, 443, 49724 TELEGRAMRU United Kingdom 39->131 133 5.75.214.132, 443, 49725, 49726 HETZNER-ASDE Germany 39->133 101 C:\Users\user\...\66e40b2e8a52e_lfsdj[1].exe, PE32 39->101 dropped 103 C:\Users\user\...\66e40b244964c_vdcsg[1].exe, PE32 39->103 dropped 105 C:\Users\user\...\66e40b2200f51_svfdsk[1].exe, PE32 39->105 dropped 107 3 other malicious files 39->107 dropped 181 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 39->181 183 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 39->183 185 Tries to steal Crypto Currency Wallets 39->185 187 Tries to harvest and steal Bitcoin Wallet information 39->187 50 DAKFCGIJKJ.exe 39->50         started        53 JKKKJJJKJK.exe 39->53         started        55 EBAAFCAFCB.exe 39->55         started        57 cmd.exe 39->57         started        135 stitchmiscpaew.shop 172.67.136.135, 443, 49719, 49757 CLOUDFLARENETUS United States 46->135 137 basedsymsotp.shop 172.67.221.198, 443, 49710, 49751 CLOUDFLARENETUS United States 46->137 139 3 other IPs or domains 46->139 file16 signatures17 process18 signatures19 149 Multi AV Scanner detection for dropped file 50->149 151 Writes to foreign memory regions 50->151 153 Allocates memory in foreign processes 50->153 59 RegAsm.exe 50->59         started        63 conhost.exe 50->63         started        155 Injects a PE file into a foreign processes 53->155 65 conhost.exe 53->65         started        67 RegAsm.exe 53->67         started        69 RegAsm.exe 55->69         started        72 conhost.exe 55->72         started        74 conhost.exe 57->74         started        76 timeout.exe 57->76         started        process20 dnsIp21 109 C:\Users\user\AppData\...\softokn3[1].dll, PE32 59->109 dropped 111 C:\Users\user\AppData\...\mozglue[1].dll, PE32 59->111 dropped 113 C:\Users\user\AppData\...\freebl3[1].dll, PE32 59->113 dropped 115 7 other files (5 malicious) 59->115 dropped 189 Tries to steal Mail credentials (via file / registry access) 59->189 191 Tries to harvest and steal ftp login credentials 59->191 193 Tries to harvest and steal browser information (history, passwords, etc) 59->193 195 2 other signatures 59->195 78 cmd.exe 59->78         started        80 cmd.exe 59->80         started        129 23.197.127.21 AKAMAI-ASN1EU United States 69->129 file22 signatures23 process24 process25 82 userFBGIDHCAAK.exe 78->82         started        85 conhost.exe 78->85         started        87 userGIEBAECAKK.exe 80->87         started        89 conhost.exe 80->89         started        signatures26 157 Multi AV Scanner detection for dropped file 82->157 159 Writes to foreign memory regions 82->159 161 Allocates memory in foreign processes 82->161 163 Injects a PE file into a foreign processes 87->163 91 conhost.exe 87->91         started        process27
Score:
78%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4/
Threat name:
Win32.Spyware.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-09-13 09:53:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 24 (87.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shydwcxj3sxjglrqio34wgopkjkbkbhjuriqkaozzmxr3xlncd2a._file
Verdict:
malicious
Similar samples:
4ed6d72fef68c583439e803871226e76588ce6436d10362011b21763e0ccf176
Stealc
5f20ea0b27db955d122e3cc2a7ad411550bb4b73692fb474ba01aeed0f182979
Stealc
70c7a307852a0d3fbf20f964e1c191ddea93c75907c45e203edc1badb6978a47
Stealc
cb8a4cb7d45a5f0828e0134d67947186498b8db141890ce488f6aa0240592665
Stealc
d401c3671807726e777b0a0814c4e4f55cf41684746813cad3a7ebbd1d3d7d71
Stealc
+ 22 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:lumma family:stealc family:vidar botnet:default credential_access discovery spyware stealer
Link:
https://tria.ge/reports/240913-lwmchsxdkf/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Unsecured Credentials: Credentials In Files
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
Detect Vidar Stealer
Lumma Stealer, LummaC
Stealc
Vidar
Malware Config
C2 Extraction:
http://46.8.231.109
https://t.me/edm0d
https://steamcommunity.com/profiles/76561199768374681
https://complainnykso.shop/api
https://basedsymsotp.shop/api
https://charistmatwio.shop/api
https://grassemenwji.shop/api
https://stitchmiscpaew.shop/api
https://commisionipwn.shop/api
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/683d5038-3348-4c37-8f31-48e8597f2ccb
Unpacked files
SH256 hash:
e0092d9787dcdc6444342b6be1c84fcbcfbff52110577599db455a61f3f981da
MD5 hash:
db0fabbc7f075bc72451ee8335303820
SHA1 hash:
f50039646ac66e3e3e044ab2f8aac65941a2716d
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/31e9fdf4-dc28-4271-a09c-39625ba3b46e/
Parent samples :
e80e120da34729c9fb7e7d4a684a7260f1346696ee8b3b514b6e512ebfa1bea4
00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b
daf4e8849a3b6011bff41cc2c7decee8c769a4ebf2be3d7316930f40448ddb25
ec9a1bede697caba74ff4666e0317cb3231fe37fbcb9f8821620c52d7d8a4dad
06510b52e07e89b5781f4ee3c7b4d94ff84c03931b3d7d93224294860feaccf4
c98f17dd444209ad0a6d71221b67cd632bc6409686f750bb5118a7e42eca91e0
d401c3671807726e777b0a0814c4e4f55cf41684746813cad3a7ebbd1d3d7d71
91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
2e4deff4bfe5c4ce46b2d0a1f875dbc0933ec2e0f0e4a210990352601c29638e
5afff322d4b56afbe4429c6fd83aa2d699c51dbf4f5495b08ac104f07da8c49d
743948a05fa7b9a001b346699bc9fd4d645b755bc7ef73802b2a139288910f24
32d0ae27d9ae49a224785cd08bae82b0ec4e944145cb2f106873f70fc2908fe7
3f9daff50fd608eb15026903bf89ad2aafae0b344f0fd82e9ea82d4071a781d7
2bac0508680cb0cdf61b10a529c4a97dfc0562fe85b740abfef0ee2ff97a9fc2
d9bb5fc7267c854e20e63ef68546da25e71270c36bcee73e328437c891892945
6d70e80c80af977af8b15cb47304b4cbd78759faa406906ed3a9e0a6dac74773
bf4bd835390e2607c737360a2527ea292bd0451507f93b623d3f9bbf4036c2fe
e48219567f84882f41bb1e957bbd1358e453274ca0d2025505c66779f642bc30
d63d18c67f83e54c77072aa953c5e5c0496a7a4c2ac6ca8bd07e211ee80b3d6c
43e7575547a95e5c4d7b7ad2915c830f252ab206a0baf9691206200a644e7b94
SH256 hash:
91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
MD5 hash:
68076ff4fb08f203da72e47f536db2d3
SHA1 hash:
c7d2df2f68fefa1b3b9ddc61809966eaa6daef49
Link:
https://www.unpac.me/results/31e9fdf4-dc28-4271-a09c-39625ba3b46e/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/91f03b0ae9dc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4

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

Stealc

Executable exe 91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3170353/

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