MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cc955cd4b419801f0cd833470805f5e4cea9cb0ed765661d359d9df5cf7aea1d. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
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SHA256 hash: cc955cd4b419801f0cd833470805f5e4cea9cb0ed765661d359d9df5cf7aea1d
SHA3-384 hash: 9d36dc0731ba7e49fe30e42612db6202e3c0ce2a2632c445a18eba453db1bb8029a66f06153cd26629316066dc7e2151
SHA1 hash: 1aa3cade5f2a5a1785479220df33714e8695b5dc
MD5 hash: b4ada1cd71c2213a576f84999e200169
humanhash: twenty-romeo-johnny-mango
File name:Request for Quote_SEKOLAH TUNAS BAKTI SG.doc__.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:3'483'999 bytes
First seen:2021-01-08 17:48:51 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 49152:e9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VV9VQ:p
TLSH 6FF5124812A881DBD5462E2B65ADF4081A37FB277CDA907CF18EF3B5A38D610ED79134
Reporter abuse_ch
Tags:FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
327
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Request for Quote_SEKOLAH TUNAS BAKTI SG.doc__.rtf
Verdict:
Malicious activity
Analysis date:
2021-01-08 17:51:01 UTC
Tags:
ole-embedded trojan exploit CVE-2017-11882 loader formbook stealer
Link:
https://app.any.run/tasks/1009eef4-bd03-41d7-acac-882abd3f09d9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._E_R_N_E_L_3_2_OADLIBRARYW_S_ETPROCADDRESS_.200622.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/cc955cd4b419801f0cd833470805f5e4cea9cb0ed765661d359d9df5cf7aea1d/results/dashboard
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/576991
Signature
Adds a directory exclusion to Windows Defender
Benign windows process drops PE files
Connects to a pastebin service (likely for C&C)
Connects to a URL shortener service
Contains functionality to hide a thread from the debugger
Detected FormBook malware
Drops PE files to the user root directory
Hides threads from debuggers
Injects a PE file into a foreign processes
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 domain / URL
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 337548 Sample: Request for Quote_SEKOLAH T... Startdate: 08/01/2021 Architecture: WINDOWS Score: 100 67 www.apuportfolio.com 2->67 69 www.621washington2s.info 2->69 71 2 other IPs or domains 2->71 91 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->91 93 Multi AV Scanner detection for domain / URL 2->93 95 Malicious sample detected (through community Yara rule) 2->95 97 13 other signatures 2->97 11 EQNEDT32.EXE 18 2->11         started        16 WINWORD.EXE 291 28 2->16         started        signatures3 process4 dnsIp5 75 79.110.52.21, 49169, 80 V4ESCROW-ASRO Romania 11->75 77 tknk.io 5.79.72.163, 443, 49166 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 11->77 79 bit.ly 67.199.248.10, 49165, 80 GOOGLE-PRIVATE-CLOUDUS United States 11->79 63 C:\Users\user\AppData\Local\...\file[1].txt, PE32 11->63 dropped 65 C:\Users\Public\69577.exe, PE32 11->65 dropped 123 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->123 18 69577.exe 16 2 11->18         started        file6 signatures7 process8 dnsIp9 73 pastebin.com 104.23.98.190, 443, 49170, 49172 CLOUDFLARENETUS United States 18->73 99 Adds a directory exclusion to Windows Defender 18->99 101 Tries to detect virtualization through RDTSC time measurements 18->101 103 Hides threads from debuggers 18->103 105 2 other signatures 18->105 22 69577.exe 18->22         started        25 cmd.exe 18->25         started        27 cmd.exe 18->27         started        29 2 other processes 18->29 signatures10 process11 signatures12 107 Modifies the context of a thread in another process (thread injection) 22->107 109 Maps a DLL or memory area into another process 22->109 111 Sample uses process hollowing technique 22->111 113 Queues an APC in another process (thread injection) 22->113 31 explorer.exe 4 22->31 injected 36 timeout.exe 25->36         started        38 timeout.exe 27->38         started        40 timeout.exe 29->40         started        process13 dnsIp14 81 www.goochandhousego.pro 93.95.226.183, 49171, 80 THE-1984-ASIS Iceland 31->81 83 www.fj-shopping.online 31->83 85 www.eaglesterling.net 31->85 53 C:\Users\user\AppData\Local\...\chkdskupz.exe, PE32 31->53 dropped 55 C:\Program Files (x86)\...\chkdskupz.exe, PE32 31->55 dropped 87 System process connects to network (likely due to code injection or exploit) 31->87 89 Benign windows process drops PE files 31->89 42 control.exe 1 14 31->42         started        46 chkdskupz.exe 31->46         started        file15 signatures16 process17 file18 59 C:\Users\user\AppData\...\O25logrv.ini, data 42->59 dropped 61 C:\Users\user\AppData\...\O25logri.ini, data 42->61 dropped 115 Detected FormBook malware 42->115 117 Tries to steal Mail credentials (via file access) 42->117 119 Tries to harvest and steal browser information (history, passwords, etc) 42->119 121 4 other signatures 42->121 48 firefox.exe 1 42->48         started        51 cmd.exe 42->51         started        signatures19 process20 file21 57 C:\Users\user\AppData\...\O25logrf.ini, data 48->57 dropped
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cc955cd4b419801f0cd833470805f5e4cea9cb0ed765661d359d9df5cf7aea1d/
Threat name:
Document-Office.Exploit.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-01-08 17:49:12 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zskvzvfudgab6dgygndqqbpv4thktsyo25swmhjvtwo7lt325ioq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion trojan
Link:
https://tria.ge/reports/210108-q31q3sfet2/
Behaviour
Delays execution with timeout.exe
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Windows security modification
Blocklisted process makes network request
Executes dropped EXE
Modifies Windows Defender Real-time Protection settings
Windows security bypass
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/cc955cd4b419801f0cd833470805f5e4cea9cb0ed765661d359d9df5cf7aea1d

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:INDICATOR_RTF_EXPLOIT_CVE_2017_8759_2
Create hunting rule
Author:ditekSHen
Description:detects CVE-2017-8759 weaponized RTF documents.
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: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.

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