MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642. 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


Formbook


Vendor detections: 6


Intelligence 6 IOCs YARA 1 File information Comments
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SHA256 hash: 93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642
SHA3-384 hash: 1ce6b6fd4ae89fba40a1f37ae5df5ea36a35724ccedbb72e81188a3f420e187b3308a9cd4311f3e91b10cb93bf76184c
SHA1 hash: cddfa3986d6bbe84d4b849b3d681bae5377de81d
MD5 hash: daea44be59abc7fb93789c9ec9535bdf
humanhash: california-cola-montana-montana
File name:157780.XLS
Download: download sample
Signature Formbook
Create hunting rule
File size:389'120 bytes
First seen:2020-08-13 09:16:36 UTC
Last seen:2020-08-13 10:26:15 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Kk3hOdsylKlgryzc4bNhZF+E+W2knF+AqmFkM9lz2KE8hBdLVoo5z9Nn/FDC5GVs:V5kMHq/8oo5ztOcVLEP9iYtHliEM9fGa
TLSH 408412A4B2D98A53CA8B2375CCD243D8F622FC62A783C3473798F62947323C44A57756
Reporter abuse_ch
Tags:FormBook xls


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: dedivps-57824.dedicloud.co.uk
Sending IP: 149.255.56.120
From: Sheyda Razizadeh (Ms.) <n.akramian@atlas-group.co>
Subject: INQ 157780
Attachment: 157780.XLS

Formbook payload URL:
http://13.234.238.111/gh/157780.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
78
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Troj.DocDl-AABN.9137.16987.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Running batch commands
Launching a process
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a process from a recently created file
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/425619
Signature
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 265374 Sample: 157780.XLS Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Document exploit detected (drops PE files) 2->51 53 11 other signatures 2->53 8 EXCEL.EXE 35 42 2->8         started        13 pcalua.exe 2->13         started        15 pcalua.exe 1 1 2->15         started        process3 dnsIp4 45 13.234.238.111, 49736, 80 AMAZON-02US United States 8->45 41 C:\Users\user\AppData\Local\...\157780[1].exe, PE32 8->41 dropped 43 C:\Users\Public\svchost32.exe, PE32 8->43 dropped 63 Document exploit detected (creates forbidden files) 8->63 65 Document exploit detected (process start blacklist hit) 8->65 17 svchost32.exe 8 8->17         started        21 splwow64.exe 8->21         started        23 smgjy.exe 13->23         started        file5 signatures6 process7 file8 35 C:\Users\user\AppData\Local\smgjy.exe, PE32 17->35 dropped 37 C:\Users\user\AppData\...\InstallUtil.exe, PE32 17->37 dropped 39 C:\Users\user\AppData\Local\Temp\...\l.dll, PE32 17->39 dropped 55 Tries to detect virtualization through RDTSC time measurements 17->55 25 smgjy.exe 17->25         started        28 cmd.exe 1 17->28         started        signatures9 process10 signatures11 57 Writes to foreign memory regions 25->57 59 Allocates memory in foreign processes 25->59 61 Injects a PE file into a foreign processes 25->61 30 reg.exe 1 1 28->30         started        33 conhost.exe 28->33         started        process12 signatures13 67 Creates an autostart registry key pointing to binary in C:\Windows 30->67
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642/
Threat name:
Script-Macro.Downloader.Obfuser
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 09:18:06 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=snzhyxh344t6ipygit4ir7o3apcpk4upqldusuuyc2i7bhpeizba._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200813-wpn7qedvqx/
Behaviour
Suspicious Office macro
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/93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642

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

Formbook

Excel file xls 93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642

(this sample)

Formbook

Executable exe 923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06

  
URLhaus
https://urlhaus.abuse.ch/url/431709/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06
  
Dropping
MD5 71bec3e70cf7b3779d29f4f488e79b77

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