agenttesla | c07980ab00eadc3038ceb9eb725a77ee6501e670fb3cb96ab58a8007981f8f21

General

Target

PO102002.exe
Size

456KB
MD5

13e21e63f32a1f5997b4e3c6f34a046d
SHA1

0398f303c169d10015f30e746e27b836d00df9e1
SHA256

b7a5fa475f3dffc48dd10e17c0aba7013ba58752baf49fb83e634ca0d16a61ce
SHA512

a246e3d24dc300a800109db2c3f4656e98fa7e2dccdba61efa4c3c52f1e76277c4cbc33e131b28b71bd3b141c7d2c14fa80bbbebf1f54df8da6e2d86c82de9fd

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.durainteriordesign.com
Port:
587
Username:
[email protected]
Password:
successman12

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.durainteriordesign.com
Port:
587
Username:
[email protected]
Password:
successman12

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/4716-137-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

PO102002.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts PO102002.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	PO102002.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:

PO102002.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	PO102002.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:

PO102002.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	PO102002.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO102002.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO102002.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO102002.exe

description pid process target process

PID 3280 set thread context of 4716 3280 PO102002.exe PO102002.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

3360 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

4352 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PO102002.exePO102002.exe

pid process

3280 PO102002.exe
4716 PO102002.exe
4716 PO102002.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO102002.exePO102002.exe

description pid process

Token: SeDebugPrivilege 3280 PO102002.exe
Token: SeDebugPrivilege 4716 PO102002.exe

description	pid	process	target process
PID 3280 set thread context of 4716	3280	PO102002.exe	PO102002.exe

pid	process
3360	schtasks.exe

pid	process
4352	REG.exe

pid	process
3280	PO102002.exe
4716	PO102002.exe
4716	PO102002.exe

description	pid	process
Token: SeDebugPrivilege	3280	PO102002.exe
Token: SeDebugPrivilege	4716	PO102002.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PO102002.exePO102002.exe

description	pid	process	target process
PID 3280 wrote to memory of 3360	3280	PO102002.exe	schtasks.exe
PID 3280 wrote to memory of 3360	3280	PO102002.exe	schtasks.exe
PID 3280 wrote to memory of 3360	3280	PO102002.exe	schtasks.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 3280 wrote to memory of 4716	3280	PO102002.exe	PO102002.exe
PID 4716 wrote to memory of 4352	4716	PO102002.exe	REG.exe
PID 4716 wrote to memory of 4352	4716	PO102002.exe	REG.exe
PID 4716 wrote to memory of 4352	4716	PO102002.exe	REG.exe
PID 4716 wrote to memory of 540	4716	PO102002.exe	netsh.exe
PID 4716 wrote to memory of 540	4716	PO102002.exe	netsh.exe
PID 4716 wrote to memory of 540	4716	PO102002.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

PO102002.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	PO102002.exe

outlook_win_path 1 IoCs

Processes:

PO102002.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	PO102002.exe

C:\Users\Admin\AppData\Local\Temp\PO102002.exe
"C:\Users\Admin\AppData\Local\Temp\PO102002.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3280

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CwBRstoWcpAg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDF73.tmp"
2⤵
- Creates scheduled task(s)
PID:3360

C:\Users\Admin\AppData\Local\Temp\PO102002.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4716

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:4352

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO102002.exe.log
Filesize
507B

MD5
ab4c71d3ff6255edd4e5c1e09540f49e

SHA1
22e06bf4e258741b5df918061871cba998c50cea

SHA256
1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

SHA512
8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDF73.tmp
Filesize
1KB

MD5
943f43f7145b753d8f69242be84a473f

SHA1
ee38f2e6ef5a1e2c0730e9115e7e22a3fc985095

SHA256
70936e9e240affdac01e186c6779359bad56155e61c0963f4b5b2aa5a054537a

SHA512
ec2d3dc05675e4b802859495cdbbbbde255172521d885aa4799eaad53b114eaa2ad79673d28f1657d4aecc1a8152e0e87bf41ef5443304222c663c7112aa3d54

Download Submit
memory/540-141-0x0000000000000000-mapping.dmp

Download
memory/3280-131-0x0000000004A90000-0x0000000004B2C000-memory.dmp

Filesize
624KB

Download
memory/3280-132-0x0000000004BD0000-0x0000000004C62000-memory.dmp

Filesize
584KB

Download
memory/3280-133-0x00000000059C0000-0x0000000005F64000-memory.dmp

Filesize
5.6MB

Download
memory/3280-130-0x0000000000070000-0x00000000000E8000-memory.dmp

Filesize
480KB

Download
memory/3360-134-0x0000000000000000-mapping.dmp

Download
memory/4352-140-0x0000000000000000-mapping.dmp

Download
memory/4716-136-0x0000000000000000-mapping.dmp

Download
memory/4716-139-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/4716-137-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/4716-142-0x0000000006680000-0x00000000066D0000-memory.dmp

Filesize
320KB

Download
memory/4716-143-0x00000000063C0000-0x00000000063CA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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