MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5. 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


Arechclient2


Vendor detections: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5
SHA3-384 hash: a666fb7cd8b43ab36c2e9adabe0d509f275a9f54678d1422143d0bb11345fdab3ede5ae60e7650da70c13c1573a5cd40
SHA1 hash: 4230322a358cbe100143b2aa1bfdc2d1923af300
MD5 hash: 87119638f32a24c6b271424e8a7a9224
humanhash: yankee-fanta-lemon-india
File name:PO 867665.doc
Download: download sample
Signature Arechclient2
Create hunting rule
File size:97'357 bytes
First seen:2024-02-19 10:04:32 UTC
Last seen:2024-02-19 11:24:34 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 768:xwAbZSibMX9gRWjtwAbZSibMX9gRWjtwAbZSibMX9gRWj6IpBgTc6uJkeGLfZ9vw:xwAlRkwAlRkwAlR5mBOuJkjzTLAS7FtQ
TLSH T10293D36DD34B02698F6243779B1B1E5542BDBA6EF38512B1306C433933EAC3DA1252BD
Reporter abuse_ch
Tags:Arechclient2 CVE-2017-11882 doc

Intelligence

File Origin
# of uploads :
2
# of downloads :
362
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

Sanesecurity.Rogue.0hr.20240219-0940.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.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
Searching for the window
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
DNS request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Changing an executable file
Launching a service
Connection attempt by exploiting the app vulnerability
Launching a file downloaded from the Internet
Sending a custom TCP request by exploiting the app vulnerability
Creating a process from a recently created file
Infecting executable files
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/65d327d322703c3491a57093/reports/4c1a71e0-b964-4c98-83a8-49feefab8897/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=6f427498-09a8-4246-a863-1867344eb30d
Result
Verdict:
MALICIOUS
Result
Threat name:
PureLog Stealer, RedLine
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1394439
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
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)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Uses known network protocols on non-standard ports
Yara detected PureLog Stealer
Yara detected RedLine Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1394439 Sample: PO 867665.doc Startdate: 19/02/2024 Architecture: WINDOWS Score: 100 48 Multi AV Scanner detection for domain / URL 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 18 other signatures 2->54 8 WINWORD.EXE 291 15 2->8         started        process3 file4 28 ~WRF{1E58C558-A704...0-197E53D49F20}.tmp, Composite 8->28 dropped 11 EQNEDT32.EXE 11 8->11         started        process5 dnsIp6 38 universalmovies.top 172.67.203.56, 443, 49160 CLOUDFLARENETUS United States 11->38 30 C:\Users\user\AppData\Roaming\more74000.exe, PE32 11->30 dropped 32 C:\Users\user\AppData\Local\...\morezx[1].exe, PE32 11->32 dropped 62 Installs new ROOT certificates 11->62 64 Office equation editor establishes network connection 11->64 66 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->66 16 more74000.exe 1 8 11->16         started        file7 signatures8 process9 signatures10 40 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 16->40 42 Found many strings related to Crypto-Wallets (likely being stolen) 16->42 44 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 16->44 46 2 other signatures 16->46 19 more74000.exe 13 35 16->19         started        24 powershell.exe 4 16->24         started        process11 dnsIp12 34 api.ip.sb 19->34 36 185.147.34.93, 49162, 49164, 49165 HOSTSLIM-GLOBAL-NETWORKNL Iceland 19->36 26 C:\Users\user\AppData\Local\...\tmpE901.tmp, Rich 19->26 dropped 56 Tries to harvest and steal browser information (history, passwords, etc) 19->56 58 Tries to steal Crypto Currency Wallets 19->58 60 Installs new ROOT certificates 24->60 file13 signatures14
Score:
85%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-02-19 09:10:07 UTC
File Type:
Document
Extracted files:
4
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ku57zwbqgn3mhac5kpfuo347wcjglaty6but5xm7pgccrswc2t2q._file
Result
Malware family:
sectoprat
Create hunting rule
Score:
  10/10
Tags:
family:redline family:sectoprat botnet:cheat discovery infostealer rat spyware stealer trojan
Link:
https://tria.ge/reports/240219-l4hdjace45/
Behaviour
Checks processor information in registry
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
Drops file in System32 directory
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
RedLine
RedLine payload
SectopRAT
SectopRAT payload
Malware Config
C2 Extraction:
185.147.34.93:55615
Malware family:
RedLine.A
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/553bfcd83033/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/553bfcd8303376c3805d53cb476f9fb092658278f0693edd9f798428cac2d4f5

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.
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.

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