MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120
SHA3-384 hash: 2037e3cbfa5521683ee392f6e32c3e6ac6d5981f9ec0f28237fd95edc4a1b773ff8399a8d677a90cca57a3936dabfb9d
SHA1 hash: 8ec7739765054c8ffae3be0cdf4c3a3a73a65d81
MD5 hash: 2fddafc32614887aaf8dcd7636f7c59e
humanhash: louisiana-low-robin-arkansas
File name:Bank Swift Copy.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:208'896 bytes
First seen:2022-03-17 11:37:19 UTC
Last seen:2022-03-17 11:41:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:kWTyTumVmfwR7hqECKr1ZjhDIBPrEaO+dSkLiRN2E43e:xyOfwT1T71sVoaXSkLiR54u
Threatray 15'757 similar samples on MalwareBazaar
TLSH T1E9145334A1F66AC9F896CEB28E61E609FFE70C919941821FD17439F61233B84C6451FE
File icon (PE):PE icon
dhash icon 10808a8c8c8a8010 (77 x Formbook, 51 x AgentTesla, 44 x RemcosRAT)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
198
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Bank Swift Copy.exe
Verdict:
Malicious activity
Analysis date:
2022-03-18 04:03:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1dca3e64-323d-4bf5-b889-a7edf01c7efe

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/251864/
Detection(s):
SecuriteInfo.com.MSIL.TrojanDownloader.Agent.KWG.22155.29421.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Unauthorized injection to a system process
Changing the hosts file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62331da1b94fb38cb4981c4b/reports/f5f75b70-74cd-4843-b945-17fba2dfe2f3/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9d4e20a1-a85e-427c-90b5-cb4e72229d19
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/958633
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Document exploit detected (process start blacklist hit)
Drops executable to a common third party application directory
Injects a PE file into a foreign processes
Injects files into Windows application
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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)
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Silenttrinity Stager Msbuild Activity
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 ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Yara detected MSILDownloaderGeneric
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 591114 Sample: Bank Swift Copy.exe Startdate: 17/03/2022 Architecture: WINDOWS Score: 100 54 api.telegram.org 2->54 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 Yara detected AgentTesla 2->68 72 9 other signatures 2->72 8 Bank Swift Copy.exe 16 6 2->8         started        13 Excel.exe 14 4 2->13         started        15 Excel.exe 3 2->15         started        signatures3 70 Uses the Telegram API (likely for C&C communication) 54->70 process4 dnsIp5 56 cdn.discordapp.com 162.159.133.233, 443, 49762 CLOUDFLARENETUS United States 8->56 46 C:\Users\user\AppData\Roaming\...xcel.exe, PE32 8->46 dropped 48 C:\Users\user\...xcel.exe:Zone.Identifier, ASCII 8->48 dropped 50 C:\Users\user\...\Bank Swift Copy.exe.log, ASCII 8->50 dropped 82 Writes to foreign memory regions 8->82 84 Allocates memory in foreign processes 8->84 86 Drops executable to a common third party application directory 8->86 17 MSBuild.exe 14 2 8->17         started        22 cmd.exe 1 8->22         started        58 162.159.129.233, 443, 49782 CLOUDFLARENETUS United States 13->58 60 192.168.2.1 unknown unknown 13->60 88 Multi AV Scanner detection for dropped file 13->88 90 Machine Learning detection for dropped file 13->90 92 Document exploit detected (process start blacklist hit) 13->92 24 cmd.exe 13->24         started        26 MSBuild.exe 13->26         started        62 162.159.130.233, 443, 49783 CLOUDFLARENETUS United States 15->62 94 Injects a PE file into a foreign processes 15->94 96 Injects files into Windows application 15->96 28 cmd.exe 15->28         started        30 MSBuild.exe 15->30         started        file6 signatures7 process8 dnsIp9 52 api.telegram.org 149.154.167.220, 443, 49785, 49787 TELEGRAMRU United Kingdom 17->52 44 C:\Windows\System32\drivers\etc\hosts, ASCII 17->44 dropped 74 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->74 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->76 78 Tries to steal Mail credentials (via file / registry access) 17->78 80 4 other signatures 17->80 32 conhost.exe 22->32         started        34 timeout.exe 1 22->34         started        36 conhost.exe 24->36         started        38 timeout.exe 24->38         started        40 conhost.exe 28->40         started        42 timeout.exe 28->42         started        file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-17 11:38:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vi37d4uxt4v4byzxwjkan5sh7npw26mwxbppe4wjh34przszmeqa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
248c9abb7f19e8fecf87d8185de60fa044932a0479ba6b6eac295922359a60e9
AgentTesla
34cc604b02051636fbc8395d520b86547300d127fb4610db61a72875073bca77
AgentTesla
9db297ede5393b2a283786b0d56c0fdd47b1eaaff6291b0f6255b1bef70bf232
AgentTesla
abd985aa1bfe39c848147583e821f9a2b0c806db69900e96850a7a9d70dbb75d
AgentTesla
ee61d9ef7a173258abdeb2d261276de1ff1c5386b9328c51a92b0f805c5462e8
AgentTesla
f403d42973ac773f89be5f033e0ab6268e0078dda5dca6301ccd4924fbe9ec76
AgentTesla
+ 15'747 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection persistence
Link:
https://tria.ge/reports/220317-nrq61sbehr/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
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
Checks computer location settings
Drops file in Drivers directory
Unpacked files
SH256 hash:
aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120
MD5 hash:
2fddafc32614887aaf8dcd7636f7c59e
SHA1 hash:
8ec7739765054c8ffae3be0cdf4c3a3a73a65d81
Link:
https://www.unpac.me/results/ae3ff627-7e3a-4881-9b91-59f5997ff1d7/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/aa37f1f2979f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120

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:pe_imphash
Create hunting rule
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

Executable exe aa37f1f2979f2bc0e337b25406f647fb5f6d7996b85ef272c93ef8f8e6596120

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/251864/

Comments