MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35. 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: 15


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35
SHA3-384 hash: ee11bf55ac964500eb4a1f04db36524cff7aa3d625735443a5a4a013f55d7e1d7f49b07367dac81fa7ba3b659c69ef2d
SHA1 hash: 71dc1d4c776a01b2b348a0c0159dcd2d1d1de599
MD5 hash: 5dd70e90425e2491163052fff62d83de
humanhash: wisconsin-march-pluto-lamp
File name:REMITTANCE COPY.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:546'651 bytes
First seen:2022-11-17 08:17:47 UTC
Last seen:2022-11-18 12:26:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 12288:Haer3xIhHZlgjpRG3HqCO/sJj4BNbWocntpMBbO:HaeN0gjpRG6n0SbOrM4
TLSH T1DFC4CE362C779405FFFDC1357CD0B79482647ABEADCA0F86E641BACA71A72C96230461
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 66c29abaaaaaaa86 (20 x AgentTesla, 10 x Formbook, 7 x SnakeKeylogger)
Reporter Anonymous
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
REMITTANCE COPY.exe
Verdict:
Malicious activity
Analysis date:
2022-11-17 08:18:56 UTC
Tags:
agenttesla trojan rat
Link:
https://app.any.run/tasks/02fc88ee-0837-4b2f-92e6-2375a8db029c

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/335226/
Detection(s):
SecuriteInfo.com.Variant.Strictor.275982.21502.26823.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Reading critical registry keys
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6375ee3b6fda73cab64e2e99/reports/04e30fe5-808a-4611-b86e-727700d58368/overview
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/914c15ef-8918-4bb6-8dbd-7ceb7f6c2887
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1115585
Signature
.NET source code contains very large array initializations
Antivirus detection for dropped file
Creates multiple autostart registry keys
Detected unpacking (creates a PE file in dynamic memory)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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 sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 748290 Sample: REMITTANCE COPY.exe Startdate: 17/11/2022 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Multi AV Scanner detection for submitted file 2->72 74 3 other signatures 2->74 7 REMITTANCE COPY.exe 18 2->7         started        10 wirulnaybgmenb.exe 2->10         started        13 wirulnaybgmenb.exe 2->13         started        process3 file4 30 C:\Users\user\AppData\...\koflhcunxd.exe, PE32 7->30 dropped 15 koflhcunxd.exe 1 2 7->15         started        76 Antivirus detection for dropped file 10->76 78 Multi AV Scanner detection for dropped file 10->78 80 Detected unpacking (creates a PE file in dynamic memory) 10->80 84 3 other signatures 10->84 19 wirulnaybgmenb.exe 14 2 10->19         started        22 wirulnaybgmenb.exe 10->22         started        82 Maps a DLL or memory area into another process 13->82 24 wirulnaybgmenb.exe 3 13->24         started        signatures5 process6 dnsIp7 32 C:\Users\user\AppData\...\wirulnaybgmenb.exe, PE32 15->32 dropped 52 Antivirus detection for dropped file 15->52 54 Multi AV Scanner detection for dropped file 15->54 56 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->56 66 5 other signatures 15->66 26 koflhcunxd.exe 17 4 15->26         started        34 3.220.57.224, 443, 49717 AMAZON-AESUS United States 19->34 36 api.ipify.org.herokudns.com 19->36 38 api.ipify.org 19->38 40 mail.convergent-interfreight.com 24->40 42 api.ipify.org.herokudns.com 24->42 44 api.ipify.org 24->44 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->58 60 Tries to steal Mail credentials (via file / registry access) 24->60 62 Tries to harvest and steal ftp login credentials 24->62 64 Tries to harvest and steal browser information (history, passwords, etc) 24->64 file8 signatures9 process10 dnsIp11 46 mail.convergent-interfreight.com 124.6.63.115, 49716, 49722, 587 APC-HOSTING-SGAPCHostingPteLtdSG Singapore 26->46 48 api.ipify.org.herokudns.com 52.20.78.240, 443, 49713, 49718 AMAZON-AESUS United States 26->48 50 2 other IPs or domains 26->50 86 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->86 88 Tries to steal Mail credentials (via file / registry access) 26->88 90 Creates multiple autostart registry keys 26->90 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-11-17 04:59:43 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=krf7xsih3iwslf3dg6xax63poe26c3ybzln2znrmehuqed4vh42q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/221117-j6958aaa3z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/320ca9fb-c28e-46c5-9547-a5377b37ef60
Unpacked files
SH256 hash:
a6bbbc7d5b65f5480985918772d56e51863e29aa4a4123cdc6b320a13698d5a2
MD5 hash:
4906e8dfcf999a700ba6ca6d3f7fdf71
SHA1 hash:
8ddcd487ada5967c71898d3d341b96fca2b217c3
Link:
https://www.unpac.me/results/3406d143-84e8-4fee-a6ec-51dad696eee2/
SH256 hash:
c72fcc78cc6229610a6da4a324868fdaa754e4439be0d67590b53147650bfb80
MD5 hash:
61f20f941771d19103d76b1e9c22238f
SHA1 hash:
76d94d34125f327ec969d5f63bd49c8bcd0957f1
Link:
https://www.unpac.me/results/3406d143-84e8-4fee-a6ec-51dad696eee2/
SH256 hash:
b6fd83a58ac32548f23459b6ab99b67f9f6d7cb8b9b1a79305dee9f4181f855d
MD5 hash:
86b07c57b4ee9be9f9c5421c8aeaf320
SHA1 hash:
47ad9e4a9bd6ff943c41d2b11539cb40406af536
Link:
https://www.unpac.me/results/3406d143-84e8-4fee-a6ec-51dad696eee2/
SH256 hash:
544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35
MD5 hash:
5dd70e90425e2491163052fff62d83de
SHA1 hash:
71dc1d4c776a01b2b348a0c0159dcd2d1d1de599
Link:
https://www.unpac.me/results/3406d143-84e8-4fee-a6ec-51dad696eee2/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/544bfbc907da/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.98
Link:
https://yomi.yoroi.company/submissions/544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_d3ac2b2f
Create hunting rule
Author:Elastic Security

File information

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

Malspam

AgentTesla

Executable exe 544bfbc907da2d25976337ae0bfb6f7135e16f01cadbacb62c21e9020f953f35

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/335226/

Comments