agenttesla | 8ae2801911fe1a3f3a658e92aa56f2fa64b6838c6dd5e568d0c2606f0508e10b

Analysis

max time kernel
128s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:34

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General

Target

CompaniesListing2020_Office_USE_ONLY.exe
Size

512KB
MD5

d6ae3cd904a77882aa5f0cfb0b997de6
SHA1

3dd3969961176986597fa5ef7977fbb5c2b82276
SHA256

3a062094e4e4f6e4d0b2e81c2c8821a82e599d668faf93614bd7063cad01d690
SHA512

2c9ec916fba63fd0e4957178eeb31b91903adbf885c1c93b88c5cda737ab1d0b4c71f62733e819e7dd5d43e138bcdc5354344aa4235731ec662e42a9aeba469e

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.fsicibd.com
Port:
587
Username:
[email protected]
Password:
SH23newaz

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.fsicibd.com
Port:
587
Username:
[email protected]
Password:
SH23newaz

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/544-134-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	CompaniesListing2020_Office_USE_ONLY.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	CompaniesListing2020_Office_USE_ONLY.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	CompaniesListing2020_Office_USE_ONLY.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CompaniesListing2020_Office_USE_ONLY.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CompaniesListing2020_Office_USE_ONLY.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CompaniesListing2020_Office_USE_ONLY.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyABJFIRST = "C:\\Users\\Admin\\AppData\\Roaming\\MyABJFIRST\\MyABJFIRST.exe"	CompaniesListing2020_Office_USE_ONLY.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	CompaniesListing2020_Office_USE_ONLY.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	CompaniesListing2020_Office_USE_ONLY.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	pid	process	target process
PID 4316 set thread context of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3820 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exeCompaniesListing2020_Office_USE_ONLY.exe

pid process

4316 CompaniesListing2020_Office_USE_ONLY.exe
544 CompaniesListing2020_Office_USE_ONLY.exe
544 CompaniesListing2020_Office_USE_ONLY.exe

pid	process
3820	schtasks.exe

pid	process
4316	CompaniesListing2020_Office_USE_ONLY.exe
544	CompaniesListing2020_Office_USE_ONLY.exe
544	CompaniesListing2020_Office_USE_ONLY.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exeCompaniesListing2020_Office_USE_ONLY.exe

description	pid	process
Token: SeDebugPrivilege	4316	CompaniesListing2020_Office_USE_ONLY.exe
Token: SeDebugPrivilege	544	CompaniesListing2020_Office_USE_ONLY.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

pid process

544 CompaniesListing2020_Office_USE_ONLY.exe

pid	process
544	CompaniesListing2020_Office_USE_ONLY.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exeCompaniesListing2020_Office_USE_ONLY.exe

description	pid	process	target process
PID 4316 wrote to memory of 3820	4316	CompaniesListing2020_Office_USE_ONLY.exe	schtasks.exe
PID 4316 wrote to memory of 3820	4316	CompaniesListing2020_Office_USE_ONLY.exe	schtasks.exe
PID 4316 wrote to memory of 3820	4316	CompaniesListing2020_Office_USE_ONLY.exe	schtasks.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 4316 wrote to memory of 544	4316	CompaniesListing2020_Office_USE_ONLY.exe	CompaniesListing2020_Office_USE_ONLY.exe
PID 544 wrote to memory of 1532	544	CompaniesListing2020_Office_USE_ONLY.exe	netsh.exe
PID 544 wrote to memory of 1532	544	CompaniesListing2020_Office_USE_ONLY.exe	netsh.exe
PID 544 wrote to memory of 1532	544	CompaniesListing2020_Office_USE_ONLY.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CompaniesListing2020_Office_USE_ONLY.exe

outlook_win_path 1 IoCs

Processes:

CompaniesListing2020_Office_USE_ONLY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CompaniesListing2020_Office_USE_ONLY.exe

C:\Users\Admin\AppData\Local\Temp\CompaniesListing2020_Office_USE_ONLY.exe
"C:\Users\Admin\AppData\Local\Temp\CompaniesListing2020_Office_USE_ONLY.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4316

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hcLJda" /XML "C:\Users\Admin\AppData\Local\Temp\tmp70AC.tmp"
2⤵
- Creates scheduled task(s)
PID:3820

C:\Users\Admin\AppData\Local\Temp\CompaniesListing2020_Office_USE_ONLY.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:544

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp70AC.tmp

Filesize
1KB

MD5
539fc0fbe9f713a1e27149bd5bc9e1cb

SHA1
d2312fab30f486915c5b45cecd02444f49e925ec

SHA256
afcd56bb7d056b38322ab46518950bece56b09c2e8941479b4cd6f8564c9db82

SHA512
75c344421de9672cca5675d87aa8ca144abae04e3123018ae621c245db5e7610edaaef9337afc97a281d52f12fb273938ba59a8a7f92f26e59bdae0a18815df5

Download Submit
memory/544-133-0x0000000000000000-mapping.dmp

Download
memory/544-134-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/544-135-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/1532-136-0x0000000000000000-mapping.dmp

Download
memory/3820-131-0x0000000000000000-mapping.dmp

Download
memory/4316-130-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download