MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978. 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


VectorStealer


Vendor detections: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978
SHA3-384 hash: 674154511911dcedbb3d2fbc7b7836edd976c49d0f4331b3daaf55425e3cf65f598b02531f43ea06475c04208512ef55
SHA1 hash: 691f40e5aa67ec4575789baf5d492e37ae648455
MD5 hash: 4f032a36a0975feab31c922d4f69d541
humanhash: six-queen-lithium-magnesium
File name:OCBC BANK PAYMENT ADVICE.pdf.exe
Download: download sample
Signature VectorStealer
Create hunting rule
File size:986'237 bytes
First seen:2023-04-18 06:10:45 UTC
Last seen:2023-04-19 22:52:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 24576:vY2pKUEWRuZBKdkEWDOB5TNGrscw4EbSUu:QqKWRcknWOD0Pw4Epu
Threatray 31 similar samples on MalwareBazaar
TLSH T13D25232EF91BDC6FE4924AB98833A677F8FAC91415E24B5F3B434395AA911214D0D8F0
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe VectorStealer

Intelligence

File Origin
# of uploads :
3
# of downloads :
256
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
OCBC BANK PAYMENT ADVICE.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-04-18 06:12:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1075d25d-8dad-4ed9-9a9d-06c8c818be10

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/382938/
Detection(s):
Sanesecurity.Malware.28947.BadP.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Reading critical registry keys
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/80155/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/643e34775e1ef31d26329205/reports/b09575fb-75a0-43e0-a0fd-02357752678a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
VectorStealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/24d598b3-8099-4e4d-b9c8-c4ad5d27a5c7
Result
Threat name:
Vector Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1215664
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (overwrites its own PE header)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses the Telegram API (likely for C&C communication)
Yara detected Costura Assembly Loader
Yara detected Telegram RAT
Yara detected Vector Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 848592 Sample: OCBC_BANK_PAYMENT_ADVICE.pdf.exe Startdate: 18/04/2023 Architecture: WINDOWS Score: 100 28 Found malware configuration 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected Vector Stealer 2->32 34 8 other signatures 2->34 8 OCBC_BANK_PAYMENT_ADVICE.pdf.exe 19 2->8         started        process3 file4 20 C:\Users\user\AppData\Local\...\rvlfhwlc.exe, PE32 8->20 dropped 11 rvlfhwlc.exe 8->11         started        process5 signatures6 36 Multi AV Scanner detection for dropped file 11->36 38 Detected unpacking (overwrites its own PE header) 11->38 40 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 11->40 42 3 other signatures 11->42 14 rvlfhwlc.exe 15 68 11->14         started        process7 dnsIp8 22 api.telegram.org 149.154.167.220, 443, 49692, 49693 TELEGRAMRU United Kingdom 14->22 24 ipinfo.io 34.117.59.81, 443, 49690 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 14->24 26 discord.com 162.159.135.232, 443, 49691 CLOUDFLARENETUS United States 14->26 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->44 46 Tries to steal Mail credentials (via file / registry access) 14->46 48 Tries to harvest and steal browser information (history, passwords, etc) 14->48 18 WerFault.exe 20 9 14->18         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978/
Threat name:
Win32.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2023-04-17 23:14:09 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
15 of 36 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ugmkltmvh3qnf7b7bvcn3jirkuiwn373thc65kw65t66apgshf4a._file
Verdict:
malicious
Similar samples:
04aeeb558307512ff291173335df224b236c303b3bf1ef1f40e3b4568f920cef
VectorStealer
0605dae3b82bab080aceb4e8a0ed850098aa93dba439b20b871c4c53a7d50c15
VectorStealer
34645b2280f1e4b8a24ffce3da7f598b0db04be3a18e935988e5b51422fb9756
VectorStealer
48ae64ee3a74c4d134f8c6542d9374325cfd89430d27dd810d3fe0f4961d105e
VectorStealer
57cff3a25d0e209ae16b6c411c95be97880fdf3075d2b33b32a20dda8d611d5f
VectorStealer
62931fe87c3452571f8bc4470b8115e18395e95d4c60255614e5eb51fed8f7c9
VectorStealer
6e6362d1a6101b847c0fcd3dfcb43f4bc08ea0960d54e03b2223f3bb28f9a329
VectorStealer
7f08a164914b44c402b96fb5cd938da92a5111353ae22b34581f2ff8cca6670e
VectorStealer
af28704c38179bcfb8bc5757baede2655bf3737d74f28ea28f27c4c7c40f44cc
VectorStealer
cfdb801f1f89a49e08c334de4281e917d77307f436f403795da440501ed91878
VectorStealer
+ 21 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230418-gxmbpabf6t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
fe12a951ab7f45500a8bee4ac459915067c91515a01f8ff534425b0f255e29b9
MD5 hash:
dbb95a36e41d948850d9705de8c6fc33
SHA1 hash:
46988a3abc9002b9c83413b5a435cdc58e7bd359
Link:
https://www.unpac.me/results/0cb74f5f-04d3-4a17-a39c-067f0dc0ae37/
SH256 hash:
a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978
MD5 hash:
4f032a36a0975feab31c922d4f69d541
SHA1 hash:
691f40e5aa67ec4575789baf5d492e37ae648455
Link:
https://www.unpac.me/results/0cb74f5f-04d3-4a17-a39c-067f0dc0ae37/
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/a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978

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:BAZT_B5_NOCEXInvalidStream
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:NETDIC208_NOCEX_NOREACTOR
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

VectorStealer

Executable exe a198a5cd953ee0d2fc3f0d44dda511551166effb99c5eeaadeecfde03cd23978

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/382938/

Comments