MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f. 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: 9


Intelligence 10 IOCs YARA 5 File information Comments
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SHA256 hash: 0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f
SHA3-384 hash: 847fda789c8ad2f5574bf4b487489a0b00e4dca61cfde147fc3519a74eb73c0f09d72e2ce460cbb9f90b6ffcfa5516de
SHA1 hash: 55a52f6971084224e3030b76cd44d13b0203b749
MD5 hash: 0d69e4f684735cf4f187659ee0882fd8
humanhash: oxygen-oregon-wyoming-fruit
File name:0d69e4f6_by_Libranalysis
Download: download sample
Signature Formbook
Create hunting rule
File size:38'912 bytes
First seen:2021-05-03 12:00:50 UTC
Last seen:2021-05-03 13:05:12 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 768:tck3hOdsylKlgryzc4bNhZFGzE+cL2knAJ0OiCgCvVKQ29CYubyfe:ik3hOdsylKlgryzc4bNhZFGzE+cL2kne
TLSH B70381E6B282D816DA4907764EEBD2D36776BC115F5A838B328CF71E1FB1AC18903117
Reporter Libranalysis
Tags:FormBook


Avatar
Libranalysis
Uploaded as part of the sample sharing project

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: 9
Application name is Microsoft Excel
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 15 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
415373 bytesWorkbook
5469 bytes_VBA_PROJECT_CUR/PROJECT
6101 bytes_VBA_PROJECT_CUR/PROJECTwm
76925 bytes_VBA_PROJECT_CUR/VBA/AK2_oiMjTt8L
8991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
91243 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
104239 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
111683 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
12222 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
13267 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
14284 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
15578 bytes_VBA_PROJECT_CUR/VBA/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
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)

Intelligence

File Origin
# of uploads :
2
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
sp1.xls
Verdict:
Malicious activity
Analysis date:
2021-05-03 11:50:05 UTC
Tags:
macros macros-on-open maldoc-17 generated-doc exe-to-msi trojan formbook stealer
Link:
https://app.any.run/tasks/ce6245a3-38ca-4e8b-8ab8-b95ca97d8b7d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/148436/
Detection(s):
TwinWave.EvilDoc.WSHCROVARCHRMATHLONGGONE.20200524.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
DNS request
Sending a custom TCP request
Creating a process from a recently created file
Creating a file in the %temp% directory
Creating a file
Launching cmd.exe command interpreter
Deleting a recently created file
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Forced shutdown of a system process
Running batch commands by exploiting the app vulnerability
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f/results/dashboard
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/707840
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
DLL side loading technique detected
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (process start blacklist hit)
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 402839 Sample: 0d69e4f6_by_Libranalysis Startdate: 03/05/2021 Architecture: WINDOWS Score: 100 32 www.111bjs.com 2->32 34 111bjs.com 2->34 36 cdn.discordapp.com 2->36 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 10 other signatures 2->50 9 MSID8B1.tmp 19 2->9         started        13 EXCEL.EXE 10 8 2->13         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\Temp\...\5rov.dll, PE32 9->30 dropped 60 Detected unpacking (changes PE section rights) 9->60 62 Maps a DLL or memory area into another process 9->62 64 DLL side loading technique detected 9->64 66 Tries to detect virtualization through RDTSC time measurements 9->66 15 MSID8B1.tmp 9->15         started        68 Obfuscated command line found 13->68 18 cmd.exe 13->18         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Maps a DLL or memory area into another process 15->72 74 Sample uses process hollowing technique 15->74 76 Queues an APC in another process (thread injection) 15->76 20 wininit.exe 15->20         started        23 explorer.exe 15->23 injected 26 msiexec.exe 18->26         started        process9 dnsIp10 52 Modifies the context of a thread in another process (thread injection) 20->52 54 Maps a DLL or memory area into another process 20->54 56 Tries to detect virtualization through RDTSC time measurements 20->56 28 cmd.exe 20->28         started        38 adimadimingilizce.com 192.0.78.25, 49166, 80 AUTOMATTICUS United States 23->38 40 www.destek-taleplerimiz.com 99.83.154.118, 49167, 80 AMAZON-02US United States 23->40 42 2 other IPs or domains 23->42 58 System process connects to network (likely due to code injection or exploit) 23->58 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f/
Threat name:
Document-Word.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2021-05-03 11:14:44 UTC
AV detection:
18 of 47 (38.30%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bscw4v62anfisq5uazjjpudvgzijbwplsjnlw65hjxj57gwo7qpq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook macro rat spyware stealer trojan xlm
Link:
https://tria.ge/reports/210503-cdq6q9w97a/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Enumerates connected drives
Loads dropped DLL
Use of msiexec (install) with remote resource
Blocklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.111bjs.com/ccr/
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/0c856e57da034a8943b4065297d075365090d9eb925abb7ba74dd3df9acefc1f

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
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/148436/

Comments