MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cedaa22118c9bca2d63edb74a43cc292100d253dab2cd23240cc4e8cc567b92. 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: 10


Maldoc score: 7


Intelligence 10 IOCs YARA 5 File information Comments

SHA256 hash: 4cedaa22118c9bca2d63edb74a43cc292100d253dab2cd23240cc4e8cc567b92
SHA3-384 hash: c1c69f1144a6ac8a56cc8b99431cdf36c3d20d2271909af683c00762f4346e3bf63e5e49ea9f556d00feaefa7562d5a0
SHA1 hash: 7d5afd9e691cedb7ebe31bb87a32e8dfda7ccb72
MD5 hash: e8e0a2921ac880e78ee3397932a6da73
humanhash: uncle-wisconsin-chicken-lemon
File name:NewOrder.xlsm
Download: download sample
Signature Formbook
File size:150'793 bytes
First seen:2021-02-23 07:05:54 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:wB1RxWSQIXUJksB977w3mv8fdwLmG9s80okHwjzjoki9cIyhGfaZWDCltlD8yCS0:w3RDkCS7k3XOmT/QzXIWGfaZW+lb8t3h
TLSH 3CE39E079116A797D02893F83F0B4E986B15AB0CE5C2BCDB14621CDB3BE53221D9E75E
Reporter abuse_ch
Tags:FormBook xlsm


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: sapphire.zoom.ph
Sending IP: 23.111.143.210
From: info@la-furnishing.ph
Subject: Our New Order
Attachment: NewOrder.xlsm

Formbook payload URL:
http://courtney.in/NewOrder.exe

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 7
OLE dump

MalwareBazaar was able to identify 13 sections in this file using oledump:

Section IDSection sizeSection name
A1414 bytesPROJECT
A262 bytesPROJECTwm
A31150 bytesVBA/Sheet1
A431995 bytesVBA/ThisWorkbook
A52581 bytesVBA/_VBA_PROJECT
A61441 bytesVBA/__SRP_0
A7160 bytesVBA/__SRP_1
A8276 bytesVBA/__SRP_2
A966 bytesVBA/__SRP_3
A10456 bytesVBA/__SRP_4
A11193 bytesVBA/__SRP_5
A12523 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousShellMay run an executable file or a system command
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Creating a process from a recently created file
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Suspicious
File Type:
Excel File with Macro
Document image
Document image
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Found malware configuration
Injects a PE file into a foreign processes
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
Modifies the context of a thread in another process (thread injection)
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Microsoft Office Product Spawning Windows Shell
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)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM_3
Yara detected FormBook
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 356473 Sample: NewOrder.xlsm Startdate: 23/02/2021 Architecture: WINDOWS Score: 100 52 www.serildaspeaks.com 2->52 54 serildaspeaks.com 2->54 62 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 13 other signatures 2->68 13 EXCEL.EXE 57 14 2->13         started        signatures3 process4 file5 44 C:\Users\user\Desktop\~$NewOrder.xlsm, data 13->44 dropped 94 Document exploit detected (process start blacklist hit) 13->94 17 cmd.exe 13->17         started        signatures6 process7 signatures8 58 Encrypted powershell cmdline option found 17->58 20 powershell.exe 12 7 17->20         started        process9 dnsIp10 56 courtney.in 45.8.126.26, 49165, 80 GBNHOST-ASRU Russian Federation 20->56 42 C:\Users\user\AppData\Roaming\mELHN.exe, PE32 20->42 dropped 76 Powershell drops PE file 20->76 25 mELHN.exe 1 5 20->25         started        file11 signatures12 process13 signatures14 78 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 25->78 80 Machine Learning detection for dropped file 25->80 82 Tries to detect virtualization through RDTSC time measurements 25->82 84 Injects a PE file into a foreign processes 25->84 28 mELHN.exe 25->28         started        31 mELHN.exe 25->31         started        process15 signatures16 86 Modifies the context of a thread in another process (thread injection) 28->86 88 Maps a DLL or memory area into another process 28->88 90 Sample uses process hollowing technique 28->90 92 Queues an APC in another process (thread injection) 28->92 33 explorer.exe 28->33 injected process17 dnsIp18 46 www.ntljcb.com 154.201.205.155, 49170, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 33->46 48 gogomarketing.xyz 198.54.115.38, 49167, 80 NAMECHEAP-NETUS United States 33->48 50 16 other IPs or domains 33->50 60 System process connects to network (likely due to code injection or exploit) 33->60 37 colorcpl.exe 33->37         started        signatures19 process20 signatures21 70 Modifies the context of a thread in another process (thread injection) 37->70 72 Maps a DLL or memory area into another process 37->72 74 Tries to detect virtualization through RDTSC time measurements 37->74 40 cmd.exe 37->40         started        process22
Threat name:
Script-Macro.Trojan.Valyria
Status:
Malicious
First seen:
2021-02-23 07:06:13 UTC
AV detection:
19 of 47 (40.43%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:formbook family:xloader evasion loader macro rat spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Formbook
Process spawned unexpected child process
Xloader
Malware Config
C2 Extraction:
http://www.ntljcb.com/tub0/
Dropper Extraction:
http://courtney.in/NewOrder.exe
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:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information


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

Malspam

Formbook

Excel file xlsm 4cedaa22118c9bca2d63edb74a43cc292100d253dab2cd23240cc4e8cc567b92

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments