MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2. 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


ArkeiStealer


Vendor detections: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2
SHA3-384 hash: c2267d08d505916fc29196c30aaa7be67a403db5d7fe0a24462f47649351be0b7500321c4d5fd718cb226c6abc33fe83
SHA1 hash: b714f986a92758f2eca0b3993b289cbcd62e0446
MD5 hash: 0c1460d1ee3d35b3c93b75e0595b2aeb
humanhash: batman-robin-quiet-jupiter
File name:Order-Detail-17534.doc
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:2'943'842 bytes
First seen:2021-01-06 18:00:51 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:czXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXzzXJ:03333333333333333333333331v
TLSH EDD501A873035285EB5B9E952B59F851A41FF21090E2449EF10FD73C23BB762EE1B44B
Reporter abuse_ch
Tags:ArkeiStealer doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: euve35436.serverloft.eu
Sending IP: 85.25.204.185
From: Payment Processing Authorize.Net <payment@authorize.net.senokairleisure.com>
Reply-To: payment@authorize.net.senokairleisure.com
Subject: WARNING! No Cardholder Authorization! Reason: Fraudulent transaction
Attachment: Order-Detail-17534.rar (contains "Order-Detail-17534.doc")

Intelligence

File Origin
# of uploads :
1
# of downloads :
317
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Order-Detail-17534.doc
Verdict:
Malicious activity
Analysis date:
2021-01-06 18:01:22 UTC
Tags:
ole-embedded exploit CVE-2017-11882 trojan stealer vidar loader evasion
Link:
https://app.any.run/tasks/19d15df9-92b4-423a-a668-973957a73616

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

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:
Fake RTF File
Link:
https://app.docguard.net/cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/575379
Signature
Connects to a URL shortener service
Drops PE files to the user root directory
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
May check the online IP address of the machine
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: 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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 336744 Sample: Order-Detail-17534.doc Startdate: 06/01/2021 Architecture: WINDOWS Score: 100 56 Found malware configuration 2->56 58 Yara detected Vidar stealer 2->58 60 Sigma detected: File Dropped By EQNEDT32EXE 2->60 62 10 other signatures 2->62 8 EQNEDT32.EXE 13 2->8         started        13 WINWORD.EXE 291 28 2->13         started        process3 dnsIp4 36 bit.ly 67.199.248.11, 49165, 80 GOOGLE-PRIVATE-CLOUDUS United States 8->36 38 bitbucket.org 104.192.141.1, 443, 49166 AMAZON-02US United States 8->38 40 2 other IPs or domains 8->40 32 C:\Users\...\update_2021-01-06_17-42[1].txt, PE32 8->32 dropped 34 C:\Users\Public\69577.exe, PE32 8->34 dropped 64 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->64 15 69577.exe 68 8->15         started        file5 signatures6 process7 dnsIp8 42 littlestepfor.com 169.239.128.99, 49168, 80 ZAPPIE-HOST-ASZappieHostGB Seychelles 15->42 44 ip-api.com 208.95.112.1, 49169, 80 TUT-ASUS United States 15->44 46 192.168.2.22, 443, 49165, 49166 unknown unknown 15->46 24 C:\Users\user\AppData\...\msvcp140[1].dll, PE32 15->24 dropped 26 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 15->26 dropped 28 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 15->28 dropped 30 9 other files (none is malicious) 15->30 dropped 48 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->48 50 Tries to steal Instant Messenger accounts or passwords 15->50 52 Tries to steal Mail credentials (via file access) 15->52 54 3 other signatures 15->54 20 cmd.exe 15->20         started        file9 signatures10 process11 process12 22 taskkill.exe 20->22         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2/
Threat name:
Document-Office.Exploit.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-01-06 18:01:05 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zsouka677lxm4novbmrz7njdpjmgxi7dqtskqde34i32uhd5bhra._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar discovery spyware stealer upx
Link:
https://tria.ge/reports/210106-dc7fg64lkj/
Behaviour
Checks processor information in registry
Kills process with taskkill
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
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
JavaScript code in executable
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Executes dropped EXE
UPX packed file
Vidar
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/cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2

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:ClamAV_Emotet_String_Aggregate
Create hunting rule
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.

File information

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

Malspam

ArkeiStealer

rar 3a52501ee22817496814d985ea44898bf15cd02e750ff86185906f354edcfe21

ArkeiStealer

Word file doc cc9d4503dffaeece35d50b239fb5237a586ba3e384e4a80c9be237aa1c7d09e2

(this sample)

  
Dropped by
MD5 1d68dcb48eae97b13b19032018ef848b
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 3a52501ee22817496814d985ea44898bf15cd02e750ff86185906f354edcfe21

Comments