MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b13f7e12456114da7b500d2e50c74be39d0c148655f99d8eab1e09b02c1f1665. 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


BitRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b13f7e12456114da7b500d2e50c74be39d0c148655f99d8eab1e09b02c1f1665
SHA3-384 hash: 9f3b8a294679ca563e354f93fa03683d6f0e99c64276d9f2bb3aed4f7e7b1801ccf6bce6c710931a73e2fddd08aab544
SHA1 hash: e043b3485849626d4e00a456dbb08e3ed7caccd2
MD5 hash: 350fb22970b8764a82c4a9ad4e7b8d5a
humanhash: arizona-earth-romeo-four
File name:Inquiry 13 APRIL 2022.doc
Download: download sample
Signature BitRAT
Create hunting rule
File size:11'445 bytes
First seen:2022-04-14 05:34:27 UTC
Last seen:2022-04-14 06:53:48 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 192:CSBsjqudlrzlohhaAqCgcDed4J+Vy3fpgOw4m614Yh5jRUSrIrdsiY3XR6nS:CSByVdRluhvqCXedsMuff/Ly4I4HRj
TLSH T146329EF02ABC5C96CD1759E6E0B6FC6004E675C98BCB16C1365CDAD0076A30ECE73A59
Reporter abuse_ch
Tags:BitRAT CVE-2017-11882 doc

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Inquiry 13 APRIL 2022.doc
Verdict:
Malicious activity
Analysis date:
2022-04-14 05:35:57 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/b4b54603-90bc-495c-814a-9217b1b83712

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
DNS request
Creating a file in the %AppData% directory
Sending an HTTP GET request
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/b13f7e12456114da7b500d2e50c74be39d0c148655f99d8eab1e09b02c1f1665/results/dashboard
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
embedequation exploit exploit shellcode
Link:
https://www.filescan.io/uploads/6257b289ffe27d5119ca83e3/reports/af2b9ddd-f94f-4323-8269-60c32c4fd99c/overview
Result
Verdict:
MALICIOUS
Result
Threat name:
BitRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/976569
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Contains functionality to hide a thread from the debugger
Creates files in alternative data streams (ADS)
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Writes to foreign memory regions
Yara detected BitRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 609056 Sample: Inquiry 13 APRIL 2022.doc Startdate: 14/04/2022 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Antivirus detection for dropped file 2->58 60 10 other signatures 2->60 8 EQNEDT32.EXE 12 2->8         started        13 Dqpbp.exe 1 2->13         started        15 WINWORD.EXE 291 19 2->15         started        17 Dqpbp.exe 2->17         started        process3 dnsIp4 48 store7.data.hu 217.65.97.65, 49171, 80 MAGYAR-TELEKOM-MAIN-ASMagyarTelekomNyrtHU Hungary 8->48 50 ddl7.data.hu 8->50 40 C:\Users\user\AppData\Roaming\hmnb.exe, PE32 8->40 dropped 42 C:\Users\user\AppData\...\Cjryjsra[1].exe, PE32 8->42 dropped 70 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->70 19 hmnb.exe 2 8 8->19         started        72 Multi AV Scanner detection for dropped file 13->72 74 Machine Learning detection for dropped file 13->74 23 cmd.exe 13->23         started        44 ~WRF{20F740F5-7972...E-80D5D3AD0564}.tmp, Composite 15->44 dropped file5 signatures6 process7 file8 38 C:\Users\user\AppData\Roaming\...\Dqpbp.exe, PE32 19->38 dropped 62 Multi AV Scanner detection for dropped file 19->62 64 Machine Learning detection for dropped file 19->64 66 Writes to foreign memory regions 19->66 68 Injects a PE file into a foreign processes 19->68 25 InstallUtil.exe 1 1 19->25         started        30 InstallUtil.exe 19->30         started        32 cmd.exe 19->32         started        34 timeout.exe 23->34         started        signatures9 process10 dnsIp11 52 212.193.30.54, 3680, 49172, 49173 SPD-NETTR Russian Federation 25->52 46 C:\Users\user\AppData\Local:14-04-2022, HTML 25->46 dropped 76 Creates files in alternative data streams (ADS) 25->76 78 Hides threads from debuggers 25->78 80 Contains functionality to hide a thread from the debugger 30->80 36 timeout.exe 32->36         started        file12 signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b13f7e12456114da7b500d2e50c74be39d0c148655f99d8eab1e09b02c1f1665/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2022-04-13 15:04:55 UTC
File Type:
Document
Extracted files:
4
AV detection:
13 of 40 (32.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=we7x4esfmeknu62qbuxfbr2l4ooqyfegkx4z3dvldye3ala7czsq._file
Result
Malware family:
bitrat
Create hunting rule
Score:
  10/10
Tags:
family:bitrat persistence trojan
Link:
https://tria.ge/reports/220414-f91jeagebk/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
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
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
BitRAT
Malware Config
C2 Extraction:
212.193.30.54:3680
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b13f7e124561/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/b13f7e12456114da7b500d2e50c74be39d0c148655f99d8eab1e09b02c1f1665

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_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
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.

File information

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

Comments