agenttesla | 0ffd3cc8c5628fff810737b47b2788735af8281dd86c2a6b1695868cfc53eae2

Analysis

max time kernel
91s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 12:10

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General

Target

Purchase Sheet 2020.exe
Size

611KB
MD5

a6619cf730f2e03c81aeb9fefcd70778
SHA1

2dca6afaf991614515c6f4fa59ce32460e0872e4
SHA256

f4ce706bea83c92bea67552077d4b3d9c1d1d58add3d8a53763cd5def3b23138
SHA512

18330333e39596142bada9d13a039e7390946e736f3e214affa626df2ac29eebfa7a0eff9743a2d92d4d1daded98f7eddd6d916874087b9bcf0ac986283c1e25

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.mail.ru
Port:
587
Username:
mikhiliovsergey@mail.ru
Password:
godwill12

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.mail.ru
Port:
587
Username:
mikhiliovsergey@mail.ru
Password:
godwill12

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/664-139-0x0000000000400000-0x0000000000452000-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:

Purchase Sheet 2020.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Purchase Sheet 2020.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Purchase Sheet 2020.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:

Purchase Sheet 2020.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	Purchase Sheet 2020.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:

Purchase Sheet 2020.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Sheet 2020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Sheet 2020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Sheet 2020.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase Sheet 2020.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	Purchase Sheet 2020.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:

Purchase Sheet 2020.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Purchase Sheet 2020.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Purchase Sheet 2020.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Sheet 2020.exe

description pid process target process

PID 432 set thread context of 664 432 Purchase Sheet 2020.exe Purchase Sheet 2020.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

1296 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Purchase Sheet 2020.exePurchase Sheet 2020.exe

pid process

432 Purchase Sheet 2020.exe
664 Purchase Sheet 2020.exe
664 Purchase Sheet 2020.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Sheet 2020.exePurchase Sheet 2020.exe

description pid process

Token: SeDebugPrivilege 432 Purchase Sheet 2020.exe
Token: SeDebugPrivilege 664 Purchase Sheet 2020.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Purchase Sheet 2020.exe

pid process

664 Purchase Sheet 2020.exe

description	pid	process	target process
PID 432 set thread context of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe

pid	process
1296	schtasks.exe

pid	process
432	Purchase Sheet 2020.exe
664	Purchase Sheet 2020.exe
664	Purchase Sheet 2020.exe

description	pid	process
Token: SeDebugPrivilege	432	Purchase Sheet 2020.exe
Token: SeDebugPrivilege	664	Purchase Sheet 2020.exe

pid	process
664	Purchase Sheet 2020.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Purchase Sheet 2020.exePurchase Sheet 2020.exe

description	pid	process	target process
PID 432 wrote to memory of 1296	432	Purchase Sheet 2020.exe	schtasks.exe
PID 432 wrote to memory of 1296	432	Purchase Sheet 2020.exe	schtasks.exe
PID 432 wrote to memory of 1296	432	Purchase Sheet 2020.exe	schtasks.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 432 wrote to memory of 664	432	Purchase Sheet 2020.exe	Purchase Sheet 2020.exe
PID 664 wrote to memory of 3956	664	Purchase Sheet 2020.exe	netsh.exe
PID 664 wrote to memory of 3956	664	Purchase Sheet 2020.exe	netsh.exe
PID 664 wrote to memory of 3956	664	Purchase Sheet 2020.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Purchase Sheet 2020.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	Purchase Sheet 2020.exe

outlook_win_path 1 IoCs

Processes:

Purchase Sheet 2020.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	Purchase Sheet 2020.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Sheet 2020.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Sheet 2020.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:432

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DjONpRxSguIdQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3604.tmp"
2⤵
- Creates scheduled task(s)
PID:1296

C:\Users\Admin\AppData\Local\Temp\Purchase Sheet 2020.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:664

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:3956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Purchase Sheet 2020.exe.log
Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3604.tmp
Filesize
1KB

MD5
487be5c6b72e62b9ab4614971c9d0f96

SHA1
4ee07ed179fba88b62426364f5b1ab5c7443b83e

SHA256
844dcf77abe80b0b2cb97048e4fcd85a36fa7289da5befb5f27cf6a191302fda

SHA512
d6ad00e358419f414c1cd49ce5645f7d4d8fa617e0a3c6836aa8fc90873365a058750e67b3eac8cf3216b84a85c57dcbbe9e8594ba3ce2c6e6277d1d4aa2f6cb

Download Submit
memory/432-130-0x0000000000B50000-0x0000000000BF0000-memory.dmp

Filesize
640KB

Download
memory/432-131-0x0000000009FE0000-0x000000000A584000-memory.dmp

Filesize
5.6MB

Download
memory/432-132-0x0000000005750000-0x00000000057E2000-memory.dmp

Filesize
584KB

Download
memory/432-133-0x00000000056B0000-0x00000000056BA000-memory.dmp

Filesize
40KB

Download
memory/432-134-0x0000000009260000-0x00000000092FC000-memory.dmp

Filesize
624KB

Download
memory/432-135-0x0000000007A30000-0x0000000007A96000-memory.dmp

Filesize
408KB

Download
memory/664-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/664-138-0x0000000000000000-mapping.dmp

Download
memory/664-142-0x0000000006E60000-0x0000000006EB0000-memory.dmp

Filesize
320KB

Download
memory/1296-136-0x0000000000000000-mapping.dmp

Download
memory/3956-141-0x0000000000000000-mapping.dmp

Download