agenttesla | 5d012bef65a2f6d29f325ab5988691d6735aa574e6d8c240691bb9efb592e8a4

Analysis

max time kernel
169s
max time network
184s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 00:27

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General

Target

qevRktR4diBlxL7.exe
Size

611KB
MD5

d95b072f6ee85a53e1e86f15cda3bfe7
SHA1

986d1ec4a7c14cd1d5959e668dfc02d893b9e91a
SHA256

5d7c6518979115ac71fbcf21c69c497357d150f5982ebd4c4e170f004091e5d6
SHA512

e60078b725d6a4478ca9e2deb5cc40b37158ac63c9631766e0fe798c2363b8128de59e3c9b6e5d2227391a501de3a5a552cd1d93bfa9532ab6f1884ca16a4162

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.wolterfan.com
Port:
587
Username:
[email protected]
Password:
@Mar123

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/3456-139-0x0000000000400000-0x0000000000452000-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:

qevRktR4diBlxL7.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	qevRktR4diBlxL7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	qevRktR4diBlxL7.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:

qevRktR4diBlxL7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	qevRktR4diBlxL7.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:

qevRktR4diBlxL7.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	qevRktR4diBlxL7.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	qevRktR4diBlxL7.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	qevRktR4diBlxL7.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

qevRktR4diBlxL7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CFMBUF = "C:\\Users\\Admin\\AppData\\Roaming\\CFMBUF\\CFMBUF.exe"	qevRktR4diBlxL7.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:

qevRktR4diBlxL7.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	qevRktR4diBlxL7.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	qevRktR4diBlxL7.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

qevRktR4diBlxL7.exe

description pid process target process

PID 1732 set thread context of 3456 1732 qevRktR4diBlxL7.exe qevRktR4diBlxL7.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

3140 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

qevRktR4diBlxL7.exeqevRktR4diBlxL7.exe

pid process

1732 qevRktR4diBlxL7.exe
1732 qevRktR4diBlxL7.exe
1732 qevRktR4diBlxL7.exe
1732 qevRktR4diBlxL7.exe
3456 qevRktR4diBlxL7.exe
3456 qevRktR4diBlxL7.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

qevRktR4diBlxL7.exeqevRktR4diBlxL7.exe

description pid process

Token: SeDebugPrivilege 1732 qevRktR4diBlxL7.exe
Token: SeDebugPrivilege 3456 qevRktR4diBlxL7.exe

description	pid	process	target process
PID 1732 set thread context of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe

pid	process
3140	schtasks.exe

pid	process
1732	qevRktR4diBlxL7.exe
1732	qevRktR4diBlxL7.exe
1732	qevRktR4diBlxL7.exe
1732	qevRktR4diBlxL7.exe
3456	qevRktR4diBlxL7.exe
3456	qevRktR4diBlxL7.exe

description	pid	process
Token: SeDebugPrivilege	1732	qevRktR4diBlxL7.exe
Token: SeDebugPrivilege	3456	qevRktR4diBlxL7.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

qevRktR4diBlxL7.exeqevRktR4diBlxL7.exe

description	pid	process	target process
PID 1732 wrote to memory of 3140	1732	qevRktR4diBlxL7.exe	schtasks.exe
PID 1732 wrote to memory of 3140	1732	qevRktR4diBlxL7.exe	schtasks.exe
PID 1732 wrote to memory of 3140	1732	qevRktR4diBlxL7.exe	schtasks.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 1732 wrote to memory of 3456	1732	qevRktR4diBlxL7.exe	qevRktR4diBlxL7.exe
PID 3456 wrote to memory of 4364	3456	qevRktR4diBlxL7.exe	netsh.exe
PID 3456 wrote to memory of 4364	3456	qevRktR4diBlxL7.exe	netsh.exe
PID 3456 wrote to memory of 4364	3456	qevRktR4diBlxL7.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

qevRktR4diBlxL7.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	qevRktR4diBlxL7.exe

outlook_win_path 1 IoCs

Processes:

qevRktR4diBlxL7.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	qevRktR4diBlxL7.exe

C:\Users\Admin\AppData\Local\Temp\qevRktR4diBlxL7.exe
"C:\Users\Admin\AppData\Local\Temp\qevRktR4diBlxL7.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:1732

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jraXuyS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB1.tmp"
2⤵
- Creates scheduled task(s)
PID:3140

C:\Users\Admin\AppData\Local\Temp\qevRktR4diBlxL7.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3456

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:4364

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\Microsoft\CLR_v4.0_32\UsageLogs\qevRktR4diBlxL7.exe.log

Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEB1.tmp

Filesize
1KB

MD5
1a8affc0df6d980a1895dd3d3733014d

SHA1
8a8d8208246f9e7cedb13fbc6b73b1b7583896d9

SHA256
c1c925f2c7b6c98f11926e17c48e0986d2f5b7287d11b247dc46775afeabdff1

SHA512
391ec006b41b17f6a84f36936d2723712a4e0b642c2fb01635c1ee0b6cde580476a06d1f11889f6dd3883c6333331d3742c8e746bca7eda4a255f6f149abeea7

Download Submit
memory/1732-131-0x0000000005B90000-0x0000000006134000-memory.dmp

Filesize
5.6MB

Download
memory/1732-132-0x0000000005510000-0x00000000055A2000-memory.dmp

Filesize
584KB

Download
memory/1732-133-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/1732-134-0x0000000008250000-0x00000000082EC000-memory.dmp

Filesize
624KB

Download
memory/1732-135-0x00000000011F0000-0x0000000001256000-memory.dmp

Filesize
408KB

Download
memory/1732-130-0x0000000000AE0000-0x0000000000B80000-memory.dmp

Filesize
640KB

Download
memory/3140-136-0x0000000000000000-mapping.dmp

Download
memory/3456-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3456-138-0x0000000000000000-mapping.dmp

Download
memory/3456-141-0x00000000069E0000-0x0000000006A30000-memory.dmp

Filesize
320KB

Download
memory/4364-142-0x0000000000000000-mapping.dmp

Download