MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1. 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: 15


Maldoc score: 22


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1
SHA3-384 hash: a2da6c088b4b3f7e35b73eca3c2cb7c80755863d6b05af7ebdd32d026175daab7f792ff403693a116d83db6f40d09b03
SHA1 hash: b455c227a620f47a611d4af4ba078e22877e3bde
MD5 hash: e34e16b0bf7b12a2741f9e7218c7beae
humanhash: fanta-texas-massachusetts-blue
File name:Rigong PO-00025026541.xls
Download: download sample
Signature Formbook
Create hunting rule
File size:378'880 bytes
First seen:2022-11-10 12:25:33 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Nk3hOdsylKlgryzc4bNhZF+E+W2knAQLzdmL89X6xi0yPrw3qMXoPLvNNZHZspNG:ULzUL82yU3XXoPLvNXypNreKa7
TLSH T1E8845BA767C05A72C0846B3785A9B681F77E8F138D464EA330F3774E9D30348A82EB55
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:FormBook xls

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: 22
OLE dump

MalwareBazaar was able to identify 17 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4204026 bytesWorkbook
5472 bytes_VBA_PROJECT_CUR/PROJECT
686 bytes_VBA_PROJECT_CUR/PROJECTwm
7990 bytes_VBA_PROJECT_CUR/VBA/Module1
8991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9156005 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
102852 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
111861 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
12213 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
131003 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
14390 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
15169 bytes_VBA_PROJECT_CUR/VBA/__SRP_4
16156 bytes_VBA_PROJECT_CUR/VBA/__SRP_5
17564 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
AutoExecAutoOpenRuns when the Word document is opened
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
IOC37.139.128.94IPv4 address
IOCsvchost.exeExecutable file name
IOCIMG00025026541.exeExecutable file name
SuspiciousOpenMay open a file
SuspiciouswriteMay write to a file (if combined with Open)
SuspiciousAdodb.StreamMay create a text file
SuspicioussavetofileMay create a text file
SuspiciousShellMay run an executable file or a system command
SuspiciousWScript.ShellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousMicrosoft.XMLHTTPMay download files from the Internet
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 :
219
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
fbecb6848a0101f42544f3527a2627da.eml
Verdict:
Malicious activity
Analysis date:
2022-11-10 05:23:02 UTC
Tags:
loader formbook trojan stealer
Link:
https://app.any.run/tasks/10444238-ac9c-4935-8189-d1d4750a8f1d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/331901/
Detection(s):
MiscreantPunch.EvilMacro.AODBWSRBMS.UNOFFICIAL
Create hunting rule

Doc.Dropper.Agent-6412232-1
Create hunting rule

TwinWave.EvilDoc.PublicDottedQuadDLrRunLikeHell.20210223.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Office.Macro-11.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.Wshell.G.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.run.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Sending a custom TCP request
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process with a hidden window
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1/results/dashboard
Payload URLs
URL
File name
http://37.139.128.94/fx/IMG00025026541.exe
ThisWorkbook
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
language-nl macros macros-on-open packed svchost.exe
Link:
https://www.filescan.io/uploads/636cedde7662ecf108398fa3/reports/8e5d2c81-bd0f-4b31-ab68-3636c43ea455/overview
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
99%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=0354408f-dfda-487d-a72e-08564f0a689e
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
IPv4 Dotted Quad URL
A URL was detected referencing a direct IP address, as opposed to a domain name.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1110523
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Detected FormBook malware
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
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 with benign system names
Encrypted powershell cmdline option found
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office process drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 743215 Sample: Rigong PO-00025026541.xls Startdate: 10/11/2022 Architecture: WINDOWS Score: 100 73 Multi AV Scanner detection for domain / URL 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 Antivirus detection for URL or domain 2->77 79 15 other signatures 2->79 8 Dmnlnpdca.exe 1 2->8         started        11 EXCEL.EXE 53 24 2->11         started        15 Dmnlnpdca.exe 1 2->15         started        process3 dnsIp4 81 Multi AV Scanner detection for dropped file 8->81 83 Machine Learning detection for dropped file 8->83 85 Encrypted powershell cmdline option found 8->85 87 Tries to detect virtualization through RDTSC time measurements 8->87 17 Dmnlnpdca.exe 8->17         started        20 powershell.exe 7 8->20         started        57 37.139.128.94, 49179, 80 LVLT-10753US Germany 11->57 51 C:\Users\user\AppData\Local\...\svchost.exe, PE32 11->51 dropped 53 C:\Users\user\...\IMG00025026541[1].exe, PE32 11->53 dropped 55 C:\Users\user\...\Rigong PO-00025026541.xls, Composite 11->55 dropped 89 Document exploit detected (creates forbidden files) 11->89 22 svchost.exe 1 3 11->22         started        91 Injects a PE file into a foreign processes 15->91 25 Dmnlnpdca.exe 15->25         started        27 powershell.exe 7 15->27         started        file5 signatures6 process7 file8 59 Modifies the context of a thread in another process (thread injection) 17->59 61 Maps a DLL or memory area into another process 17->61 63 Sample uses process hollowing technique 17->63 65 Queues an APC in another process (thread injection) 17->65 29 explorer.exe 17->29 injected 31 cmd.exe 17->31         started        47 C:\Users\user\AppData\...\Dmnlnpdca.exe, PE32 22->47 dropped 67 Multi AV Scanner detection for dropped file 22->67 69 Machine Learning detection for dropped file 22->69 71 Encrypted powershell cmdline option found 22->71 33 powershell.exe 6 22->33         started        35 svchost.exe 22->35         started        37 svchost.exe 22->37         started        39 8 other processes 22->39 signatures9 process10 process11 41 wininit.exe 29->41         started        45 autoconv.exe 29->45         started        file12 49 C:\Users\user\AppData\...\5L5logri.ini, data 41->49 dropped 93 Detected FormBook malware 41->93 95 Creates an undocumented autostart registry key 41->95 97 Tries to detect virtualization through RDTSC time measurements 41->97 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1/
Threat name:
Document-Word.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2022-11-09 23:40:23 UTC
File Type:
Document
Extracted files:
22
AV detection:
14 of 26 (53.85%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5dvbg6m74q7w4qpgk5aplrcbdvjuvrebyb6rm4mx6xw3suqavxiq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:nurs macro macro_on_action persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221110-pl66qabgan/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5acf3323-2f6e-46fc-a57d-8d8c05a88779
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e8ea13799fe4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB

File information

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

Malspam

Formbook

Excel file xls e8ea13799fe43f6e41e65740f5c4411d534ac481c07d167197f5edb95200add1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/331901/

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