agenttesla | 20d71bfff3c6f4109aab41922c346c6d05179a8fbefff9d130b6ceda25a8bbdf

General

Target

TT copy.exe
Size

472KB
MD5

18d499ee965898dc417e1c6a37de7455
SHA1

c99e3ecde7653820426a22b0c1699133bcdc8444
SHA256

89d0ab4d71e3f671f3313901eb7af21702ae556f9f6ae451f141195725f893a1
SHA512

0d194faa9cfd61f0285fc3caeefbde76a31db209ff190f49d65529e1283e770cd0bd885798187d0d8997287315bf8ed8390c9803732875dc8628a6321ebfe07b

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.fakly-cambodia.com
Port:
587
Username:
[email protected]
Password:
Mmhh#2014

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/3316-139-0x0000000000400000-0x0000000000452000-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:

TT copy.exe

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

TT copy.exe

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

TT copy.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	TT copy.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TT copy.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TT copy.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:

TT copy.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

TT copy.exe

description pid process target process

PID 3404 set thread context of 3316 3404 TT copy.exe TT copy.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

2324 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

TT copy.exeTT copy.exe

pid process

3404 TT copy.exe
3316 TT copy.exe
3316 TT copy.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TT copy.exeTT copy.exe

description pid process

Token: SeDebugPrivilege 3404 TT copy.exe
Token: SeDebugPrivilege 3316 TT copy.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

TT copy.exe

pid process

3316 TT copy.exe

description	pid	process	target process
PID 3404 set thread context of 3316	3404	TT copy.exe	TT copy.exe

pid	process
2324	schtasks.exe

pid	process
3404	TT copy.exe
3316	TT copy.exe
3316	TT copy.exe

description	pid	process
Token: SeDebugPrivilege	3404	TT copy.exe
Token: SeDebugPrivilege	3316	TT copy.exe

pid	process
3316	TT copy.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

TT copy.exeTT copy.exe

description	pid	process	target process
PID 3404 wrote to memory of 2324	3404	TT copy.exe	schtasks.exe
PID 3404 wrote to memory of 2324	3404	TT copy.exe	schtasks.exe
PID 3404 wrote to memory of 2324	3404	TT copy.exe	schtasks.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3404 wrote to memory of 3316	3404	TT copy.exe	TT copy.exe
PID 3316 wrote to memory of 3108	3316	TT copy.exe	netsh.exe
PID 3316 wrote to memory of 3108	3316	TT copy.exe	netsh.exe
PID 3316 wrote to memory of 3108	3316	TT copy.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

TT copy.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	TT copy.exe

outlook_win_path 1 IoCs

Processes:

TT copy.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	TT copy.exe

C:\Users\Admin\AppData\Local\Temp\TT copy.exe
"C:\Users\Admin\AppData\Local\Temp\TT copy.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:3404

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zOrRNGsJElsik" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD035.tmp"
2⤵
- Creates scheduled task(s)
PID:2324

C:\Users\Admin\AppData\Local\Temp\TT copy.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3316

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:3108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\TT copy.exe.log
Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD035.tmp
Filesize
1KB

MD5
73026205656118608df31e22b71fec57

SHA1
b448cc6c2bd73f718d093bc2062fbcbbea5fb7a8

SHA256
33b7c78302c3a04eaa2d6bf80f40b621df1a07a173c2a9a9ca663d1419212e00

SHA512
3cad8fe628823f755a51ee7d6dae15fb134ac21dbdb4bd9ab50b0e58ca90f78341018debadbd3f41fdacbe2a78f4457dac654873bf80262accd0bf47ba3809a3

Download Submit
memory/2324-136-0x0000000000000000-mapping.dmp

Download
memory/3108-142-0x0000000000000000-mapping.dmp

Download
memory/3316-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3316-138-0x0000000000000000-mapping.dmp

Download
memory/3316-141-0x00000000064C0000-0x0000000006510000-memory.dmp

Filesize
320KB

Download
memory/3404-135-0x0000000006100000-0x0000000006166000-memory.dmp

Filesize
408KB

Download
memory/3404-134-0x00000000062F0000-0x000000000638C000-memory.dmp

Filesize
624KB

Download
memory/3404-133-0x00000000055D0000-0x00000000055DA000-memory.dmp

Filesize
40KB

Download
memory/3404-130-0x0000000000BA0000-0x0000000000C1C000-memory.dmp

Filesize
496KB

Download
memory/3404-132-0x0000000005640000-0x00000000056D2000-memory.dmp

Filesize
584KB

Download
memory/3404-131-0x0000000005B50000-0x00000000060F4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads