MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 eac82994777b64301341675612fcacac8f08af9d468014c8de9f15aa3c784b42. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
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SHA256 hash: eac82994777b64301341675612fcacac8f08af9d468014c8de9f15aa3c784b42
SHA3-384 hash: 90c2a50a1da64604c087a782c64a02b9c01b2a9a0cd905577cc55c0d11b3571e8640dac4a6e3d4f3620e844bd893483c
SHA1 hash: a59370e6143369be9c017970158e4e7db617554a
MD5 hash: 4f4b085463f4a8885497de8cbcc2aceb
humanhash: sink-mississippi-pip-princess
File name:ORDER.xls
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:462'848 bytes
First seen:2020-10-05 06:42:21 UTC
Last seen:2020-10-05 07:40:39 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:f2+NJ9iY+2yy/RJVSjlWRKTZ01lQhO8M0KiT:f2+NJ9iYgqjABgeZiQ7pKiT
TLSH CAA422E3F9C3EE0BD94A073540DB81919B26FC21BFB1921B8285F35B5B707508E4A95E
Reporter GovCERT_CH
Tags:Smoke Loader SmokeLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
144
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Using the Windows Management Instrumentation requests
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Launching a process by exploiting the app vulnerability
Result
Threat name:
SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/481034
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Bypasses PowerShell execution policy
Creates an autostart registry key pointing to binary in C:\Windows
Creates processes via WMI
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Downloads files with wrong headers with respect to MIME Content-Type
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: Suspicious Program Location Process Starts
Suspicious powershell command line found
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 292957 Sample: ORDER.xls Startdate: 05/10/2020 Architecture: WINDOWS Score: 100 51 Multi AV Scanner detection for submitted file 2->51 53 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->53 55 Yara detected SmokeLoader 2->55 57 9 other signatures 2->57 8 powershell.exe 14 21 2->8         started        13 EXCEL.EXE 26 24 2->13         started        15 pcalua.exe 1 2->15         started        17 pcalua.exe 1 1 2->17         started        process3 dnsIp4 45 45.66.250.101, 49732, 80 HZ-US-ASBG Russian Federation 8->45 47 192.168.2.1 unknown unknown 8->47 43 C:\Users\Public\Documents\ewwejrfpq.exe, PE32 8->43 dropped 73 Powershell drops PE file 8->73 19 ewwejrfpq.exe 8 8->19         started        23 conhost.exe 8->23         started        file5 signatures6 process7 file8 37 C:\Users\user\oigns.exe, PE32 19->37 dropped 39 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 19->39 dropped 41 C:\Users\user\AppData\Local\Temp\...\f.dll, PE32 19->41 dropped 59 Machine Learning detection for dropped file 19->59 61 Drops PE files to the user root directory 19->61 63 Tries to detect virtualization through RDTSC time measurements 19->63 25 oigns.exe 3 19->25         started        28 cmd.exe 1 19->28         started        signatures9 process10 signatures11 65 Machine Learning detection for dropped file 25->65 67 Writes to foreign memory regions 25->67 69 Allocates memory in foreign processes 25->69 71 2 other signatures 25->71 30 AddInProcess32.exe 25->30         started        32 reg.exe 1 1 28->32         started        35 conhost.exe 28->35         started        process12 signatures13 49 Creates an autostart registry key pointing to binary in C:\Windows 32->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/eac82994777b64301341675612fcacac8f08af9d468014c8de9f15aa3c784b42/
Threat name:
Document-Office.Trojan.GenScript
Create hunting rule
Status:
Malicious
First seen:
2020-10-04 23:41:50 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5lectfdxpnsdae2bm5lbf7fmvshqrl45i2abjsg6t4k2updyjnba._file
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
persistence trojan backdoor family:smokeloader
Link:
https://tria.ge/reports/201005-btphl46mma/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Maps connected drives based on registry
Loads dropped DLL
Blacklisted process makes network request
Executes dropped EXE
Process spawned unexpected child process
SmokeLoader
Malware Config
C2 Extraction:
http://magichankey.com/1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Dropper
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/eac82994777b64301341675612fcacac8f08af9d468014c8de9f15aa3c784b42

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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

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

Malspam

Smoke Loader

Excel file xls eac82994777b64301341675612fcacac8f08af9d468014c8de9f15aa3c784b42

(this sample)

Smoke Loader

Executable exe c1830ba81a707357031fc8e5cd7cf3a6083c30f33669fe29590cc639140d6780

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 c1830ba81a707357031fc8e5cd7cf3a6083c30f33669fe29590cc639140d6780
  
Dropping
MD5 22f0838b7f38ff8eac2e40208acb640c

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