MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991
SHA3-384 hash: 8036e2c34fc6bbdeb9c0253ea6a83830c575e0edd6c73348a3387a6e35e2d3b1bdb777f31237479298b447f8152166b6
SHA1 hash: 551d194ea0725703b3220492998fef33a8ea0f93
MD5 hash: 4c7a8994282b9cd3cfb136447c82d340
humanhash: oranges-fix-sierra-september
File name:PI order No202307110.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:90'325 bytes
First seen:2023-08-17 08:47:44 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 768:5wAbZSibMX9gRWj1eFchyWBp71OaBUOL9N:5wAlRLyhyWBpZUOb
TLSH T19193AC6DD34F41A9CF621377AA1A0E4541F8BB3EF38552A2309C537533EE82D91252BD
Reporter cocaman
Tags:CVE-2017-11882 doc FormBook


Avatar
cocaman
Malicious email (T1566.001)
From: "Sales <sales@aberla.com>" (likely spoofed)
Received: "from aberla.com (unknown [109.237.98.167]) "
Date: "16 Aug 2023 13:17:22 -0700"
Subject: "RE: PI order No202307110 Docx"
Attachment: "PI order No202307110.doc"

Intelligence

File Origin
# of uploads :
1
# of downloads :
281
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PIXorderXNo202307110.docx
Verdict:
Malicious activity
Analysis date:
2023-08-16 14:18:02 UTC
Tags:
exploit cve-2017-11882 stealer
Link:
https://app.any.run/tasks/4f1b996c-a585-4523-9d53-8e4b8f73771a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file in the %AppData% directory
Сreating synchronization primitives
Searching for the 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:
Fake RTF File
Link:
https://app.docguard.net/d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991/results/dashboard
Behaviour
BlacklistAPI detected
Gathering data
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=5a469c36-a749-41fb-9ff1-38819576e64b
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1292652
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Performs DNS queries to domains with low reputation
Potential downloader shellcode found
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1292652 Sample: PI_order_No202307110.doc Startdate: 17/08/2023 Architecture: WINDOWS Score: 100 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for URL or domain 2->62 64 Antivirus / Scanner detection for submitted sample 2->64 66 11 other signatures 2->66 10 EQNEDT32.EXE 11 2->10         started        15 WINWORD.EXE 336 13 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 52 2.59.254.18, 49162, 80 CMCSUS Germany 10->52 40 C:\Users\user\AppData\...\lawyfj5783.exe, PE32 10->40 dropped 42 C:\Users\user\AppData\Local\...\lawzx[1].exe, PE32 10->42 dropped 78 Office equation editor establishes network connection 10->78 80 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->80 19 lawyfj5783.exe 1 7 10->19         started        file5 signatures6 process7 signatures8 68 Multi AV Scanner detection for dropped file 19->68 70 Machine Learning detection for dropped file 19->70 72 Injects a PE file into a foreign processes 19->72 22 lawyfj5783.exe 19->22         started        process9 signatures10 74 Maps a DLL or memory area into another process 22->74 76 Queues an APC in another process (thread injection) 22->76 25 lwBIYaEhXGuOFZZqhWNLRaYOdYIaB.exe 22->25 injected process11 process12 27 msiexec.exe 1 20 25->27         started        dnsIp13 54 www.sqlite.org 45.33.6.223, 49165, 80 LINODE-APLinodeLLCUS United States 27->54 44 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 27->44 dropped 82 Tries to steal Mail credentials (via file / registry access) 27->82 84 Tries to harvest and steal browser information (history, passwords, etc) 27->84 86 Modifies the context of a thread in another process (thread injection) 27->86 88 2 other signatures 27->88 32 explorer.exe 1 3 27->32 injected 36 firefox.exe 27->36         started        38 lwBIYaEhXGuOFZZqhWNLRaYOdYIaB.exe 27->38 injected file14 signatures15 process16 dnsIp17 46 www.potent-tech.com 119.28.69.86, 49187, 49188, 49189 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 32->46 48 301.woaituqing.com 67.21.74.99, 49179, 49180, 49181 ST-BGPUS United States 32->48 50 15 other IPs or domains 32->50 56 System process connects to network (likely due to code injection or exploit) 32->56 58 Performs DNS queries to domains with low reputation 32->58 signatures18
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-08-16 09:45:57 UTC
File Type:
Document
Extracted files:
4
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2xedrowuuz5ddvwu37o5woko4r227es2zhpzqwmv5ls55bbjxgiq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/230817-kqfgcaab6w/
Behaviour
Launches Equation Editor
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Process spawned unexpected child process
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d5c838bad4a6/report/overview.html
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/d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

File information

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

Malspam

Formbook

Word file doc d5c838bad4a67a31d6d4dfdddb394ee475af925ac9df985995eae5de8429b991

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
URLhaus
https://urlhaus.abuse.ch/url/2695832/

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