MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4643670f66baed3c27b174a0f19297923fb8303aeaa90f1f8bb012816451bf7. 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


Smoke Loader


Vendor detections: 5


Intelligence 5 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4643670f66baed3c27b174a0f19297923fb8303aeaa90f1f8bb012816451bf7
SHA3-384 hash: eac487f986e62159721e45c4e768d4ef2c25ba8c3ec86c043c48b3a9e3a1fc7d31c70e11e90df120e4e2d636471d9ef6
SHA1 hash: 9fb8965527836370b5f71a7f7d3bd9b14980411e
MD5 hash: 7083d8a4f4afa76f99cdb55753ea622f
humanhash: iowa-ohio-eleven-stream
File name:7083d8a4f4afa76f99cdb55753ea622f.exe
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:359'424 bytes
First seen:2020-11-11 08:00:35 UTC
Last seen:2020-11-11 09:47:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 957f451a9a7944a1fbdb8d7ab72b6645 (5 x Smoke Loader)
ssdeep 6144:CT6e/lMW5AALWisd+XVCKr3jK96giw0B53:WX/l/AAEd+Xpr300
TLSH 1174BF1131A1C0F1D6A606784869D3E42ABAF8795B304ECF7B94277A5F353D29A3D383
Reporter abuse_ch
Tags:exe Smoke Loader

Intelligence

File Origin
# of uploads :
2
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
PUA.Win.Downloader.Firseria-6804617-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
DNS request
Sending an HTTP POST request
Sending a custom TCP request
Creating a process from a recently created file
Launching a process
Creating a window
Searching for the window
Reading critical registry keys
Sending an HTTP GET request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Deleting of the original file
Enabling autorun by creating a file
Unauthorized injection to a browser process
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.
Result
Threat name:
CobaltStrike SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/529959
Signature
Benign windows process drops PE files
Binary contains a suspicious time stamp
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)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
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
Multi AV Scanner detection for dropped file
Renames NTDLL to bypass HIPS
System process connects to network (likely due to code injection or exploit)
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 access)
Writes to foreign memory regions
Yara detected CobaltStrike
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 314080 Sample: gH4o5FCHAE.exe Startdate: 11/11/2020 Architecture: WINDOWS Score: 100 58 Malicious sample detected (through community Yara rule) 2->58 60 Yara detected CobaltStrike 2->60 62 Yara detected CobaltStrike 2->62 64 4 other signatures 2->64 8 gH4o5FCHAE.exe 1 2->8         started        11 gftfebt 1 2->11         started        process3 file4 82 Detected unpacking (changes PE section rights) 8->82 84 Renames NTDLL to bypass HIPS 8->84 86 Maps a DLL or memory area into another process 8->86 88 Creates a thread in another existing process (thread injection) 8->88 14 explorer.exe 5 8->14 injected 32 C:\Users\user\AppData\Local\Temp\554B.tmp, PE32 11->32 dropped 90 Multi AV Scanner detection for dropped file 11->90 92 Machine Learning detection for dropped file 11->92 94 Checks if the current machine is a virtual machine (disk enumeration) 11->94 signatures5 process6 dnsIp7 46 smk10ddde.com 89.203.251.120, 49706, 49709, 80 CDT-ASTheCzechRepublicCZ Czech Republic 14->46 48 palaexpressmarket.shoprevoltium.tk 158.69.247.65, 443, 49707 OVHFR Canada 14->48 34 C:\Users\user\AppData\Roaming\gftfebt, PE32 14->34 dropped 36 C:\Users\user\AppData\Local\Temp\45D9.exe, PE32 14->36 dropped 38 C:\Users\user\...\gftfebt:Zone.Identifier, ASCII 14->38 dropped 50 Benign windows process drops PE files 14->50 52 Injects code into the Windows Explorer (explorer.exe) 14->52 54 Deletes itself after installation 14->54 56 2 other signatures 14->56 19 explorer.exe 12 14->19         started        23 45D9.exe 14->23         started        25 explorer.exe 14->25         started        27 13 other processes 14->27 file8 signatures9 process10 dnsIp11 40 smk10ddde.com 19->40 66 System process connects to network (likely due to code injection or exploit) 19->66 68 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->68 70 Tries to steal Mail credentials (via file access) 19->70 72 Tries to harvest and steal browser information (history, passwords, etc) 19->72 74 Detected unpacking (changes PE section rights) 23->74 76 Detected unpacking (creates a PE file in dynamic memory) 23->76 78 Detected unpacking (overwrites its own PE header) 23->78 80 Machine Learning detection for dropped file 23->80 29 45D9.exe 12 23->29         started        signatures12 process13 dnsIp14 42 173.234.155.145, 49711, 49712, 49713 LEASEWEB-USA-NYC-11US United States 29->42 44 192.168.2.1 unknown unknown 29->44
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4643670f66baed3c27b174a0f19297923fb8303aeaa90f1f8bb012816451bf7/
Threat name:
Win32.Trojan.Glupteba
Create hunting rule
Status:
Malicious
First seen:
2020-11-11 08:02:05 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
smokeloader
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Score:
  10/10
Tags:
family:smokeloader backdoor spyware trojan
Link:
https://tria.ge/reports/201111-qvexybp7an/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
Program crash
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
SmokeLoader
Malware Config
C2 Extraction:
http://smk10ddde.com/
Unpacked files
SH256 hash:
a4643670f66baed3c27b174a0f19297923fb8303aeaa90f1f8bb012816451bf7
MD5 hash:
7083d8a4f4afa76f99cdb55753ea622f
SHA1 hash:
9fb8965527836370b5f71a7f7d3bd9b14980411e
Link:
https://www.unpac.me/results/c82605bf-f0ce-4c94-935d-101254ac0a28/
SH256 hash:
640326eaa9b6d1eebecf4925208ea87f31574b530e81b25575a5ab28f23ba90d
MD5 hash:
701f9a4e569369f69ec1c8d2114f5c09
SHA1 hash:
1964037544e248c943177d19b105e3e5594ca53f
Link:
https://www.unpac.me/results/c82605bf-f0ce-4c94-935d-101254ac0a28/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:win_smokeloader_a2
Create hunting rule
Author:pnx

File information

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

Web download

Smoke Loader

Executable exe a4643670f66baed3c27b174a0f19297923fb8303aeaa90f1f8bb012816451bf7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/804371/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/802950/
  
URLhaus
https://urlhaus.abuse.ch/url/804380/
  
URLhaus
https://urlhaus.abuse.ch/url/804379/
  
URLhaus
https://urlhaus.abuse.ch/url/786755/

Comments