MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1. 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: 13


Intelligence 13 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1
SHA3-384 hash: 755c17b64fe2d6558e179ed5289267a73e2c3642fcb193557a9580bbf3d881c9ec81709f7e15f67190fcbf2998eed552
SHA1 hash: 36675f2f9d990543e6eddb6fffb787399590c0b1
MD5 hash: ca184daff05c9f7cab82b11e73ce6b9c
humanhash: angel-lamp-aspen-edward
File name:ca184daff05c9f7cab82b11e73ce6b9c.exe
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:338'944 bytes
First seen:2021-12-22 11:20:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 8aff45b68d3f12f20fc26cca6f6a8508 (1 x CoinMiner, 1 x Smoke Loader)
ssdeep 6144:bHOjA0shhZaKXHKjIWmTWOuKILb+XMscgPpW:wA0s/VXwIWrFKILK7c
Threatray 3'162 similar samples on MalwareBazaar
TLSH T18F748E10B7A0C435F1B716F846B69279B93E7EE1A76490CF22C42AEE56356E0EC31707
File icon (PE):PE icon
dhash icon 25ac137031939b91 (10 x Smoke Loader, 7 x Amadey, 5 x Tofsee)
Reporter abuse_ch
Tags:Dofoil exe Smoke Loader

Intelligence

File Origin
# of uploads :
1
# of downloads :
318
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://92.255.85.131/img/rundll32.exe
Verdict:
Malicious activity
Analysis date:
2021-12-22 00:41:56 UTC
Tags:
loader
Link:
https://app.any.run/tasks/ba28a671-bc27-4ff9-a400-2aebc425756f

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/215773/
Detection(s):
Win.Packed.Ulise-9917254-0
Create hunting rule

Win.Malware.Generic-9917255-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Searching for synchronization primitives
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Enabling autorun by creating a file
Sending an HTTP POST request to an infection source
Sending an HTTP GET request to an infection source
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/2932/overview
Behaviour
MalwareBazaar
SystemUptime
MeasuringTime
EvasionQueryPerformanceCounter
CheckCmdLine
EvasionGetTickCount
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware
Link:
https://www.filescan.io/uploads/61c30a254ab5c44cbf4ca715/reports/e010ab88-dcfe-4970-b665-05841a969bdd/overview
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/90610c18-61d4-4f7c-a3b2-7ad4d4f51156
Result
Threat name:
Oski Stealer Phoenix Miner SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/911490
Signature
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if the current machine is a virtual machine (disk enumeration)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops PE files with benign system names
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Sample uses process hollowing technique
Sigma detected: System File Execution Location Anomaly
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Oski Stealer
Yara detected Phoenix Miner
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 543968 Sample: VQi6PxulQW.exe Startdate: 22/12/2021 Architecture: WINDOWS Score: 100 112 raw.githubusercontent.com 2->112 114 github.com 2->114 122 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->122 124 Antivirus detection for URL or domain 2->124 126 Antivirus detection for dropped file 2->126 128 9 other signatures 2->128 12 VQi6PxulQW.exe 2->12         started        14 bchvrga 2->14         started        17 lsm.exe 2->17         started        19 lsm.exe 2->19         started        signatures3 process4 signatures5 21 VQi6PxulQW.exe 12->21         started        158 Machine Learning detection for dropped file 14->158 24 bchvrga 14->24         started        160 Multi AV Scanner detection for dropped file 17->160 162 Injects a PE file into a foreign processes 17->162 26 lsm.exe 17->26         started        164 Sample uses process hollowing technique 19->164 process6 signatures7 148 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 21->148 150 Maps a DLL or memory area into another process 21->150 152 Checks if the current machine is a virtual machine (disk enumeration) 21->152 28 explorer.exe 3 8 21->28 injected 154 Creates a thread in another existing process (thread injection) 24->154 process8 dnsIp9 118 92.255.85.131, 49762, 80 SOVTEL-ASRU Russian Federation 28->118 120 192.168.2.1 unknown unknown 28->120 98 C:\Users\user\AppData\Roaming\bchvrga, PE32 28->98 dropped 100 C:\Users\user\AppData\Local\Temp\F03.exe, PE32 28->100 dropped 102 C:\Users\user\AppData\Local\Temp\1ABC.exe, PE32+ 28->102 dropped 104 C:\Users\user\...\bchvrga:Zone.Identifier, ASCII 28->104 dropped 166 System process connects to network (likely due to code injection or exploit) 28->166 168 Benign windows process drops PE files 28->168 170 Injects code into the Windows Explorer (explorer.exe) 28->170 172 3 other signatures 28->172 33 1ABC.exe 1 22 28->33         started        38 F03.exe 28->38         started        40 RegHost.exe 16 28->40         started        42 3 other processes 28->42 file10 signatures11 process12 dnsIp13 106 github.com 140.82.121.4, 443, 49765, 49766 GITHUBUS United States 33->106 108 raw.githubusercontent.com 185.199.110.133, 443, 49767, 49770 FASTLYUS Netherlands 33->108 88 C:\Users\user\AppData\Roaming\...\RegHost.exe, PE32+ 33->88 dropped 90 C:\Users\user\AppData\Roaming\...\7z.exe, PE32+ 33->90 dropped 92 C:\Users\user\AppData\Roaming\...\7z.dll, PE32+ 33->92 dropped 94 2 other files (none is malicious) 33->94 dropped 130 Multi AV Scanner detection for dropped file 33->130 132 Detected unpacking (changes PE section rights) 33->132 134 Detected unpacking (overwrites its own PE header) 33->134 144 5 other signatures 33->144 44 bfsvc.exe 33->44         started        47 cmd.exe 33->47         started        49 cmd.exe 33->49         started        61 2 other processes 33->61 136 May check the online IP address of the machine 38->136 138 Machine Learning detection for dropped file 38->138 140 Contains functionality to inject code into remote processes 38->140 146 2 other signatures 38->146 51 F03.exe 15 38->51         started        110 140.82.121.3, 443, 49785, 49786 GITHUBUS United States 40->110 142 Hides threads from debuggers 40->142 55 cmd.exe 40->55         started        57 cmd.exe 40->57         started        59 conhost.exe 40->59         started        file14 signatures15 process16 dnsIp17 156 Hides threads from debuggers 44->156 63 conhost.exe 44->63         started        65 7z.exe 47->65         started        68 conhost.exe 47->68         started        70 conhost.exe 49->70         started        72 7z.exe 49->72         started        116 iplogger.org 148.251.234.83, 443, 49780, 49781 HETZNER-ASDE Germany 51->116 96 C:\ProgramData\...\lsm.exe, PE32 51->96 dropped 74 schtasks.exe 1 51->74         started        76 7z.exe 55->76         started        78 conhost.exe 55->78         started        80 2 other processes 57->80 file18 signatures19 process20 file21 84 C:\Users\user\AppData\...\RegData_Temp.exe, PE32+ 65->84 dropped 82 conhost.exe 74->82         started        86 C:\Users\user\AppData\...\RegHost_Temp.exe, PE32+ 76->86 dropped process22
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Malicious
First seen:
2021-12-22 03:11:48 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q75yczc2jzj5w4t6zm7y2gvxv25kvro6yr76wv66ljfaz4an4tqq._file
Verdict:
malicious
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+ 3'152 additional samples on MalwareBazaar
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:smokeloader backdoor persistence trojan
Link:
https://tria.ge/reports/211222-nf1w3sfcg2/
Behaviour
Checks SCSI registry key(s)
Creates scheduled task(s)
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Deletes itself
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
SmokeLoader
Malware Config
C2 Extraction:
http://92.255.85.131/
Unpacked files
SH256 hash:
2710783f0590235e3dcc5a2dfbee7d2d1c5ce1717a29bfabc128bab5a91d45d5
MD5 hash:
3d7a4d26a473a3d4c005f995da9cfa52
SHA1 hash:
ad830c9b2a947fed37b8eaf12247e1e58de85d3d
Link:
https://www.unpac.me/results/74986e5d-e143-450c-bb96-78b2115f61e8/
SH256 hash:
87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1
MD5 hash:
ca184daff05c9f7cab82b11e73ce6b9c
SHA1 hash:
36675f2f9d990543e6eddb6fffb787399590c0b1
Link:
https://www.unpac.me/results/74986e5d-e143-450c-bb96-78b2115f61e8/
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/87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1

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 87fb81645a4e53db727ecb3f8d1ab7aebaaac5dec47feb57de5a4a0cf00de4e1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1888488/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/215773/

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