MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508. 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


Loki


Vendor detections: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508
SHA3-384 hash: e9f44ec9f891fddca3d17afe7c12481facd8846ceb11e29e8630a7ea6d25f4e39f9b24cade49a96c046c35e751f5e475
SHA1 hash: 059a474a96f24843101e946634480016262993ba
MD5 hash: 6d8dafca8bfcaaae1489aec6eda6a878
humanhash: mango-october-delta-lamp
File name:6d8dafca8bfcaaae1489aec6eda6a878.rtf
Download: download sample
Signature Loki
Create hunting rule
File size:12'913 bytes
First seen:2020-12-03 07:16:54 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:oCEZE8DyOzntR3om+3QCZojXgIbzU0Ko806U:oCwtzLomCxC1bzzYvU
TLSH 0D428E940A44342AE69565A9CF92FDBE061FF5B21AEA45D0338CE7327F571C28B2290C
Reporter abuse_ch
Tags:Loki rtf

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 dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Launching a file downloaded from the Internet
Forced shutdown of a system process
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/554323
Signature
Antivirus detection for dropped file
Drops PE files to the user root directory
Hijacks the control flow in another process
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)
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 equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
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
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 signatures2 2 Behavior Graph ID: 326278 Sample: osJ3VOYzR5.rtf Startdate: 03/12/2020 Architecture: WINDOWS Score: 100 63 Multi AV Scanner detection for domain / URL 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Antivirus detection for dropped file 2->67 69 13 other signatures 2->69 11 EQNEDT32.EXE 12 2->11         started        16 WINWORD.EXE 291 21 2->16         started        process3 dnsIp4 49 asdfghjklzxcvbnmmnbvcxzlkjhgfdsapoiuytre.ydns.eu 103.133.108.6, 49167, 80 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 11->49 45 C:\Users\user\AppData\Local\...\chang[1].exe, PE32 11->45 dropped 47 C:\Users\Public\vbc.exe, PE32 11->47 dropped 89 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->89 18 vbc.exe 45 11->18         started        file5 signatures6 process7 file8 37 C:\Users\user\AppData\...\CyborgAncon.dll, PE32 18->37 dropped 39 C:\Users\user\AppData\Roaming\...\wbemDC.dll, PE32 18->39 dropped 41 C:\Users\user\AppData\Roaming\...\vcbuild.dll, PE32 18->41 dropped 43 4 other files (none is malicious) 18->43 dropped 71 Antivirus detection for dropped file 18->71 73 Machine Learning detection for dropped file 18->73 22 rundll32.exe 18->22         started        signatures9 process10 signatures11 75 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 22->75 77 Hijacks the control flow in another process 22->77 79 Maps a DLL or memory area into another process 22->79 25 cmd.exe 22->25         started        process12 signatures13 81 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 25->81 83 Modifies the context of a thread in another process (thread injection) 25->83 85 Maps a DLL or memory area into another process 25->85 87 3 other signatures 25->87 28 explorer.exe 25->28 injected process14 dnsIp15 51 blacklumberjack.mobi 34.102.136.180, 49169, 80 GOOGLEUS United States 28->51 53 www.856379727.xyz 103.88.34.80, 80 CHINATELECOM-ZHEJIANG-NINGBO-IDCNINGBOZHEJIANGProvince China 28->53 55 www.blacklumberjack.mobi 28->55 91 System process connects to network (likely due to code injection or exploit) 28->91 32 chkdsk.exe 28->32         started        signatures16 process17 signatures18 57 Modifies the context of a thread in another process (thread injection) 32->57 59 Maps a DLL or memory area into another process 32->59 61 Tries to detect virtualization through RDTSC time measurements 32->61 35 cmd.exe 32->35         started        process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-12-02 02:20:08 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qd3tg53fcx6tywoixyoaro53tisxwav3wlesfdakray7qrsweuea._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201203-vz3ssjx2jn/
Behaviour
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Uses the VBS compiler for execution
Blacklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.fuentenebro.wine/ugk/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Exploit
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508

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.

Web download

Loki

Rich Text Format (RTF) rtf 80f733776515fd3c59c8be1c08bbbb9a257b02bbb2c9228c0a8831f846562508

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/755183/
  
Delivery method
Distributed via web download

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