MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85
SHA3-384 hash: a2065e79ae2dffe0e2cbffe956b7e5a58071b943421c3277330bfc1c8557730c456104f69cfdceab1e51dc8e8dd98324
SHA1 hash: 875074001481bbe00ad8640cc30a23abb99cb38d
MD5 hash: ca57c1bae3adf7258073760016dfd9ff
humanhash: hamper-black-quebec-fifteen
File name:FRAUD NOTIFICATION 35738-59.doc
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:2'732'728 bytes
First seen:2020-12-22 11:50:11 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:mQF6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6mV6:nVVVVVVVVVVVVVVVVVVVVVVVVQH
TLSH 57C5F1E0134458C6CACB27D7AE297989176AA1772DD608CC304DFBFA17B72E5C90CC5A
Reporter abuse_ch
Tags:ArkeiStealer doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: euve35436.serverloft.eu
Sending IP: 85.25.204.185
From: MERCHANT SERVICES AUTHORIZE.NET <fraud@authorize.net>
Reply-To: fraud@authorize.net
Subject: FRAUD NOTIFICATION - CHARGEBACK NOTICE #35738-59
Attachment: FRAUD NOTIFICATION 35738-59.doc

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 :
310
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FRAUD NOTIFICATION 35738-59.doc
Verdict:
Malicious activity
Analysis date:
2020-12-22 11:51:21 UTC
Tags:
ole-embedded generated-doc exploit CVE-2017-11882 trojan stealer vidar loader evasion
Link:
https://app.any.run/tasks/fb93ec3f-c50b-4b00-94a3-537b02c2be2e

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

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/341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85/results/dashboard
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/568172
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
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 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: 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: 333164 Sample: FRAUD NOTIFICATION 35738-59.doc Startdate: 22/12/2020 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->58 60 13 other signatures 2->60 8 EQNEDT32.EXE 13 2->8         started        13 WINWORD.EXE 292 27 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\user\AppData\Local\...\pdpd64[1].txt, PE32 8->32 dropped 34 C:\Users\Public\7654333.exe, PE32 8->34 dropped 62 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->62 15 7654333.exe 67 8->15         started        file5 signatures6 process7 dnsIp8 42 bdbtrans.com 169.239.128.13, 49168, 80 ZAPPIE-HOST-ASZappieHostGB Seychelles 15->42 44 ip-api.com 208.95.112.1, 49169, 80 TUT-ASUS United States 15->44 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 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->46 48 Tries to steal Instant Messenger accounts or passwords 15->48 50 Tries to steal Mail credentials (via file access) 15->50 52 3 other signatures 15->52 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/341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85/
Threat name:
Document-Office.Exploit.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2020-12-22 11:51:06 UTC
AV detection:
8 of 29 (27.59%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gqp6zsaitud4lxp57neslmzeg2axemuu3sp3eeof2xyuiqom52cq._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar discovery spyware stealer upx
Link:
https://tria.ge/reports/201222-d1pdf2pc1s/
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/341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85

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.

Malspam

ArkeiStealer

Word file doc 341fecc8089d07c5ddfdfb4925b3243681723294dc9fb211c5d5f14441ccee85

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments