MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81d753e81a9ccd4d27eb749d382b0eebfdfd30d7533f8d6162bb043af1d2c4ca. 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

SHA256 hash: 81d753e81a9ccd4d27eb749d382b0eebfdfd30d7533f8d6162bb043af1d2c4ca
SHA3-384 hash: ab729d962fa0beddd7e9fe5458ecdc2bb99b2db6a13838d93b96e450ab55b300b6e5b61a88e16b8ab4e51a165bdd5233
SHA1 hash: 3894359316b0811368613f1d16cf135b395420c1
MD5 hash: 26aa3f2cda4898a9248a7bff7aa3ae5c
humanhash: venus-stairway-island-skylark
File name:26aa3f2cda4898a9248a7bff7aa3ae5c.exe
Download: download sample
Signature Smoke Loader
File size:311'808 bytes
First seen:2021-12-23 08:49:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 95d45e77143988fbcae4ec8ca9a8169e (4 x ArkeiStealer, 4 x RedLineStealer, 2 x RaccoonStealer)
ssdeep 1536:kllB1L066PxqVTJOfhWPN5RYfScGRqyvozcqz8yQF4lglnD/:kL0dk1e256DWqyvoznobB
Threatray 3'246 similar samples on MalwareBazaar
TLSH T17E64BF507BA1C033C9A2937546B587AD9E3FBDC27AB151CF3685275E6E702C28D36342
File icon (PE):PE icon
dhash icon 480c1c4c4f594b14 (172 x Smoke Loader, 134 x RedLineStealer, 98 x Amadey)
Reporter abuse_ch
Tags:Dofoil exe Smoke Loader

Intelligence


File Origin
# of uploads :
1
# of downloads :
321
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
26aa3f2cda4898a9248a7bff7aa3ae5c.exe
Verdict:
Suspicious activity
Analysis date:
2021-12-23 08:57:12 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Searching for synchronization primitives
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Reading critical registry keys
Launching a process
Running batch commands
Unauthorized injection to a system process
Enabling autorun by creating a file
Sending an HTTP POST request to an infection source
Result
Malware family:
n/a
Score:
  9/10
Tags:
n/a
Behaviour
MalwareBazaar
MeasuringTime
SystemUptime
CPUID_Instruction
EvasionQueryPerformanceCounter
EvasionGetTickCount
CheckCmdLine
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-vm greyware
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.
Malware family:
Generic Malware
Verdict:
Malicious
Result
Threat name:
SmokeLoader
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Benign windows process drops PE files
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 (overwrites its own PE header)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
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
Multi AV Scanner detection for submitted file
PE file has nameless sections
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)
Writes to foreign memory regions
Yara detected SmokeLoader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 544406 Sample: 2tCrJSW077.exe Startdate: 23/12/2021 Architecture: WINDOWS Score: 100 94 Multi AV Scanner detection for submitted file 2->94 96 Yara detected SmokeLoader 2->96 98 Machine Learning detection for sample 2->98 100 2 other signatures 2->100 10 2tCrJSW077.exe 2->10         started        12 isjwwvg 2->12         started        15 isjwwvg 2->15         started        process3 signatures4 17 2tCrJSW077.exe 10->17         started        110 Machine Learning detection for dropped file 12->110 20 isjwwvg 12->20         started        22 isjwwvg 15->22         started        process5 signatures6 86 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 17->86 88 Maps a DLL or memory area into another process 17->88 90 Checks if the current machine is a virtual machine (disk enumeration) 17->90 24 explorer.exe 3 5 17->24 injected 92 Creates a thread in another existing process (thread injection) 20->92 process7 dnsIp8 78 92.255.85.131, 49745, 49746, 80 SOVTEL-ASRU Russian Federation 24->78 70 C:\Users\user\AppData\Roaming\isjwwvg, PE32 24->70 dropped 72 C:\Users\user\AppData\Local\Temp\9611.exe, PE32+ 24->72 dropped 74 C:\Users\user\...\isjwwvg:Zone.Identifier, ASCII 24->74 dropped 102 System process connects to network (likely due to code injection or exploit) 24->102 104 Benign windows process drops PE files 24->104 106 Injects code into the Windows Explorer (explorer.exe) 24->106 108 3 other signatures 24->108 29 9611.exe 1 14 24->29         started        34 RegHost.exe 13 24->34         started        36 RegHost.exe 13 24->36         started        38 3 other processes 24->38 file9 signatures10 process11 dnsIp12 80 github.com 140.82.121.3, 443, 49747, 49748 GITHUBUS United States 29->80 76 C:\Users\user\AppData\Roaming\...\RegHost.exe, PE32+ 29->76 dropped 112 Detected unpacking (overwrites its own PE header) 29->112 114 Machine Learning detection for dropped file 29->114 116 Hides threads from debuggers 29->116 40 cmd.exe 1 29->40         started        42 cmd.exe 1 29->42         started        52 2 other processes 29->52 82 140.82.121.4, 443, 49763, 49764 GITHUBUS United States 34->82 84 192.168.2.1 unknown unknown 34->84 44 cmd.exe 34->44         started        46 cmd.exe 34->46         started        54 2 other processes 34->54 48 cmd.exe 36->48         started        50 cmd.exe 36->50         started        56 2 other processes 36->56 file13 signatures14 process15 process16 58 conhost.exe 40->58         started        60 conhost.exe 42->60         started        62 conhost.exe 44->62         started        64 conhost.exe 46->64         started        66 conhost.exe 48->66         started        68 conhost.exe 50->68         started       
Threat name:
Win32.Trojan.Raccrypt
Status:
Malicious
First seen:
2021-12-23 08:50:13 UTC
File Type:
PE (Exe)
Extracted files:
14
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Result
Malware family:
smokeloader
Score:
  10/10
Tags:
family:smokeloader backdoor persistence trojan
Behaviour
Checks SCSI registry key(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
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Loads dropped DLL
Executes dropped EXE
SmokeLoader
Suspicious use of NtCreateProcessExOtherParentProcess
Malware Config
C2 Extraction:
http://92.255.85.131/
Unpacked files
SH256 hash:
2710783f0590235e3dcc5a2dfbee7d2d1c5ce1717a29bfabc128bab5a91d45d5
MD5 hash:
3d7a4d26a473a3d4c005f995da9cfa52
SHA1 hash:
ad830c9b2a947fed37b8eaf12247e1e58de85d3d
SH256 hash:
81d753e81a9ccd4d27eb749d382b0eebfdfd30d7533f8d6162bb043af1d2c4ca
MD5 hash:
26aa3f2cda4898a9248a7bff7aa3ae5c
SHA1 hash:
3894359316b0811368613f1d16cf135b395420c1
Malware family:
SmokeLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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 81d753e81a9ccd4d27eb749d382b0eebfdfd30d7533f8d6162bb043af1d2c4ca

(this sample)

  
Delivery method
Distributed via web download

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