MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77. 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


LummaStealer


Vendor detections: 18


Intelligence 18 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77
SHA3-384 hash: ffd7a01fb988294487e9bdf5a5d4eeccabe01f6d1713a2cf55308c5ef7a6ad76d4d7b25aba194c9de43c51f806a55ba5
SHA1 hash: fab711b446c2cc55f97c7a5afaa9f9833e01a0ea
MD5 hash: 6d9b8ff6442e3c42a7ad0e1238960057
humanhash: blue-fish-minnesota-ink
File name:6d9b8ff6442e3c42a7ad0e1238960057.exe
Download: download sample
Signature LummaStealer
Create hunting rule
File size:418'304 bytes
First seen:2024-09-25 13:59:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a11cbe8ba3528a436618e8dc32e663a6 (4 x Stealc, 1 x Amadey, 1 x LummaStealer)
ssdeep 6144:lwpk63+zRADFXmigaB0r9v1FkJNdj4E5nkJv23J7quw2T6:+pkQ+zRAhXmiLQ9vmaElkJv2YuwJ
Threatray 3'541 similar samples on MalwareBazaar
TLSH T10A949E439295BF70F5278B729E3EC6FA362EF5624E15276722167E2F24B01B1C123B11
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon 082828c8c0804800 (1 x LummaStealer)
Reporter abuse_ch
Tags:exe LummaStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
422
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6d9b8ff6442e3c42a7ad0e1238960057.exe
Verdict:
Malicious activity
Analysis date:
2024-09-25 14:02:30 UTC
Tags:
loader smokeloader
Link:
https://app.any.run/tasks/f464aa7b-d8fb-4226-95f8-107b77e7e455

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f4176756c487103d526af1
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Connection attempt to an infection source
DNS request
Query of malicious DNS domain
Unauthorized injection to a system process
Enabling autorun by creating a file
Sending an HTTP POST request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
epmicrosoft_visual_cc fingerprint microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/66f4176c28a6e83e1416a1f2/reports/052ba2aa-2035-4e21-9990-7c3c90e92208/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77
Result
Verdict:
SUSPICIOUS
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/456a8bbe-498d-4949-bc3b-562969d34383
Result
Threat name:
SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1518333
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if the current machine is a virtual machine (disk enumeration)
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_StartupCommand, often done to detect sandboxes)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
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 Mail credentials (via file / registry access)
Uses ipconfig to lookup or modify the Windows network settings
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1518333 Sample: KTh1gQlT9a.exe Startdate: 25/09/2024 Architecture: WINDOWS Score: 100 55 nwgrus.ru 2->55 57 calvinandhalls.com 2->57 59 Suricata IDS alerts for network traffic 2->59 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 7 other signatures 2->65 8 KTh1gQlT9a.exe 2->8         started        11 esjbbri 2->11         started        13 uejbbri 2->13         started        15 msiexec.exe 2->15         started        signatures3 process4 signatures5 81 Detected unpacking (changes PE section rights) 8->81 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->83 85 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 8->85 101 3 other signatures 8->101 17 explorer.exe 94 9 8->17 injected 22 cmd.exe 1 8->22         started        87 Antivirus detection for dropped file 11->87 89 Multi AV Scanner detection for dropped file 11->89 91 Machine Learning detection for dropped file 11->91 93 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->93 95 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 13->95 97 Maps a DLL or memory area into another process 13->97 99 Checks if the current machine is a virtual machine (disk enumeration) 13->99 process6 dnsIp7 49 190.98.23.157, 49756, 49758, 49760 TelecommunicationcompanySuriname-TeleSurSR Suriname 17->49 51 calvinandhalls.com 23.145.40.162, 443, 49741, 49742 SURFAIRWIRELESS-IN-01US Reserved 17->51 53 2 other IPs or domains 17->53 41 C:\Users\user\AppData\Roaming\uejbbri, PE32 17->41 dropped 43 C:\Users\user\AppData\Roaming\esjbbri, PE32 17->43 dropped 45 C:\Users\user\AppData\Local\Temp647.exe, PE32 17->45 dropped 47 2 other malicious files 17->47 dropped 67 System process connects to network (likely due to code injection or exploit) 17->67 69 Benign windows process drops PE files 17->69 71 Injects code into the Windows Explorer (explorer.exe) 17->71 79 3 other signatures 17->79 24 E647.exe 17->24         started        27 explorer.exe 20 17->27         started        29 B575.exe 2 17->29         started        37 5 other processes 17->37 73 Uses netsh to modify the Windows network and firewall settings 22->73 75 Uses ipconfig to lookup or modify the Windows network settings 22->75 77 Modifies the windows firewall 22->77 31 WMIC.exe 22->31         started        33 systeminfo.exe 22->33         started        35 conhost.exe 22->35         started        39 17 other processes 22->39 file8 signatures9 process10 signatures11 103 Antivirus detection for dropped file 24->103 105 Detected unpacking (changes PE section rights) 24->105 107 Machine Learning detection for dropped file 24->107 125 5 other signatures 24->125 109 System process connects to network (likely due to code injection or exploit) 27->109 111 Found evasive API chain (may stop execution after checking mutex) 27->111 113 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 27->113 115 Tries to steal Mail credentials (via file / registry access) 27->115 117 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 29->117 119 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 29->119 121 Queries sensitive service information (via WMI, Win32_StartupCommand, often done to detect sandboxes) 29->121 123 Tries to harvest and steal browser information (history, passwords, etc) 37->123
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77
Detection:
smokeloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-09-25 11:17:56 UTC
File Type:
PE (Exe)
Extracted files:
67
AV detection:
14 of 38 (36.84%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uza26bdcewkyntyqxcdhmu7bmp3twydgcbsfkycwioyivobjvr3q._file
Verdict:
malicious
Label(s):
smokeloader
Create hunting rule
Similar samples:
0e7e5c6eec2718102c051da7d403442664bb8cd9c6f3f2e231c4dae69be2fb79
LummaStealer
1ff5c42f96786dc7226f9e4fc6f25f484f4d6b5a8641d8d477477cd950c51004
LummaStealer
2555138d315fe335a9cc77ad2c3f8b0bbd0e066f38db784774b26ba2537a0900
LummaStealer
6bb852f4b68e8a72cf0096ced722d59bd3a243e41ab052e9955602f38d0a35e8
LummaStealer
a107d2f396e73863c8c7ca3dada2039bd3c8b4ba3c3d09884f15dd776c86281d
LummaStealer
c7a2d4deab33d14c5c0df61413662f9c025a289c61378a0cd660d0daf521a0ce
LummaStealer
d031dba06e6f21c4a0deaee93b9fa0ed8849f0d401ff26ca239e9da547030d77
LummaStealer
d722bd3c56605be7c31cd87c183cbbf3a396835f11b5af72686c64116bc2aa36
LummaStealer
e6e106a5206be28f2b76c0190d3c1ba85d4f4bf759babd66c64d9a17a4219ddb
LummaStealer
+ 3'531 additional samples on MalwareBazaar
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:smokeloader botnet:pub2 backdoor discovery trojan
Link:
https://tria.ge/reports/240925-razzdaygjm/
Behaviour
Checks SCSI registry key(s)
Program crash
System Location Discovery: System Language Discovery
SmokeLoader
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/502c8f80-416e-4c46-b382-aaaa7742b525
Unpacked files
SH256 hash:
a9918c23a31211ab32fdd163e49fc5313007d652e0896f6b923711378b459509
MD5 hash:
422b7b725003f71a15519c67313e3eef
SHA1 hash:
808f558da78522edaf9cee4a83365049adee2f08
Detections:
SmokeLoaderStage2
Create hunting rule
win_smokeloader_a2
Create hunting rule
Link:
https://www.unpac.me/results/8766274c-8f61-42c2-8529-735d7b8a4900/
Parent samples :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 hash:
a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77
MD5 hash:
6d9b8ff6442e3c42a7ad0e1238960057
SHA1 hash:
fab711b446c2cc55f97c7a5afaa9f9833e01a0ea
Link:
https://www.unpac.me/results/8766274c-8f61-42c2-8529-735d7b8a4900/
Malware family:
SmokeLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a641af046225/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/a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Web download

LummaStealer

Executable exe a641af0462259586cf10b8867653e163f73b6066106455605643b08ab829ac77

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3174502/
  
Delivery method
Distributed via web download

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 (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WINHTTP.dll::WinHttpCloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetDiskFreeSpaceExW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputA
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasExesLengthW
KERNEL32.dll::GetConsoleAliasExesA
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkA
KERNEL32.dll::CreateFileMappingA
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileA
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::GetFileAttributesA

Comments