MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1. 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


AgentTesla


Vendor detections: 17


Intelligence 17 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1
SHA3-384 hash: 298c92c40666cd98f5a36060e7b18ea690eeda1141eab58b60b30916b45112286c35175ba07e4f43649bade8784288ce
SHA1 hash: 9ec898e0effd6edb10b3063a600bd3c412ad3d49
MD5 hash: beb75d678dead227ec7a733a6dc5e705
humanhash: louisiana-quiet-pennsylvania-seven
File name:Re Remittance Advice.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:804'360 bytes
First seen:2024-03-08 14:47:14 UTC
Last seen:2024-03-12 11:07:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:DvnFtImAFNyr+uxiCrBuoEyKzDLZuD8dithT80PEa+C47gEXdM+YrN/R0V8kR:zF61FaliGBHmRuD+axLPEa/mgskrXKL
TLSH T170051265B29C6BA9E17B97F722369010AF72B88A0431E79D4DC391DE59A1F404F31E23
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
453
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1.exe
Verdict:
Malicious activity
Analysis date:
2024-03-08 14:50:47 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/87ed976b-6d17-467a-93a3-be1c9de3ff5b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.14463.2261.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Changing a file
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65eb2523204403ca94d25aed/reports/1f1af296-8a94-49ea-a351-3dd8f7075b37/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2d42f50c-ddec-45df-bb9a-3df9c292cac8
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1405444
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1405444 Sample: Re Remittance Advice.exe Startdate: 08/03/2024 Architecture: WINDOWS Score: 100 56 mail.mcltransindo.com 2->56 58 www.google.de 2->58 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Sigma detected: Scheduled temp file as task from temp location 2->68 70 12 other signatures 2->70 8 Re Remittance Advice.exe 21 2->8         started        13 cEzTqNDUrJzL.exe 19 2->13         started        15 boqXv.exe 2->15         started        17 boqXv.exe 2->17         started        signatures3 process4 dnsIp5 62 www.google.de 142.250.101.94, 443, 49708, 49712 GOOGLEUS United States 8->62 52 C:\Users\user\AppData\...\cEzTqNDUrJzL.exe, PE32 8->52 dropped 54 C:\Users\user\AppData\Local\...\tmpDC30.tmp, XML 8->54 dropped 82 Writes to foreign memory regions 8->82 84 Allocates memory in foreign processes 8->84 86 Adds a directory exclusion to Windows Defender 8->86 19 RegSvcs.exe 1 4 8->19         started        24 powershell.exe 23 8->24         started        26 powershell.exe 23 8->26         started        28 schtasks.exe 1 8->28         started        88 Multi AV Scanner detection for dropped file 13->88 90 Machine Learning detection for dropped file 13->90 92 Injects a PE file into a foreign processes 13->92 30 RegSvcs.exe 13->30         started        32 schtasks.exe 13->32         started        34 RegSvcs.exe 13->34         started        36 conhost.exe 15->36         started        38 conhost.exe 17->38         started        file6 signatures7 process8 dnsIp9 60 mail.mcltransindo.com 103.204.130.176, 49710, 49714, 587 TOMATOWEB-BDTomatoWebPvtLimitedBD Bangladesh 19->60 50 C:\Users\user\AppData\Roaming\...\boqXv.exe, PE32 19->50 dropped 72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->72 74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->74 76 Tries to steal Mail credentials (via file / registry access) 19->76 40 conhost.exe 24->40         started        42 WmiPrvSE.exe 24->42         started        44 conhost.exe 26->44         started        46 conhost.exe 28->46         started        78 Tries to harvest and steal browser information (history, passwords, etc) 30->78 80 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->80 48 conhost.exe 32->48         started        file10 signatures11 process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-03-08 08:10:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qvoqashlkrdbjucx6as4jekf6wm2ieqz4v64jravvbkljw6wgoqq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240308-r6ey3shf89/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
b1f63b3ea7cc065bf6b04d13fdb0c3a43f336045367dac6f45ac49b4d9b2403e
MD5 hash:
a8d01745eed77e9879bcc82a29870a5a
SHA1 hash:
db24b6f7340e7e3b2527e429df2ab48d77ed5a1a
Link:
https://www.unpac.me/results/5fff1c3f-e9e7-4b38-95d5-45bd7197b4eb/
SH256 hash:
c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b
MD5 hash:
7c7fb6daa78beb69128991ff893143ed
SHA1 hash:
c01bb99984b12b84129db80eae1d5d8341a358e2
Link:
https://www.unpac.me/results/5fff1c3f-e9e7-4b38-95d5-45bd7197b4eb/
SH256 hash:
4d34fc47d8ec839a1393817a982e4685f46856926cfc5011427cdd4e6dc64b54
MD5 hash:
2fa068d88e411bbbc924a572d9439bbe
SHA1 hash:
aa3f57cb4e1735bd5460dfeb32ba0eb170402b91
Link:
https://www.unpac.me/results/5fff1c3f-e9e7-4b38-95d5-45bd7197b4eb/
SH256 hash:
2b786f191c682f38d2b221cd005f4db6f6a931e59b4044e8ce671b6175ab85b9
MD5 hash:
3aea00debb956c984818331d964ebe51
SHA1 hash:
85f420f46659b5dc25a2a72b76bb9f158f18c627
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/5fff1c3f-e9e7-4b38-95d5-45bd7197b4eb/
Parent samples :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 hash:
855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1
MD5 hash:
beb75d678dead227ec7a733a6dc5e705
SHA1 hash:
9ec898e0effd6edb10b3063a600bd3c412ad3d49
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/5fff1c3f-e9e7-4b38-95d5-45bd7197b4eb/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/855d0048eb54/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/855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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

AgentTesla

rar 6465c5c2e8e27da1d51e63b186dcbc15195902502b1a4558acd025bc88ac9542

AgentTesla

Executable exe 855d0048eb544614d057f025c49145f599a41219e57dc4c415a854b4dbd633a1

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 6465c5c2e8e27da1d51e63b186dcbc15195902502b1a4558acd025bc88ac9542
  
Dropped by
MD5 d0e6c93e614601dff12df9e155bfa207

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments