agenttesla | f638b6b5261b1bca1368c299b7b7017360192e19058da4f5079cfb342d0afb63

General

Target

EFS_SPEC.exe
Size

845KB
MD5

d51d2bf57db9ce6c54521c328dd5fb28
SHA1

674964135e6b5d1a766240ebd0340a4db0064218
SHA256

cd9b154f848a6f37a110de136034cbf5190600da5687bb6259f19addf2e2759a
SHA512

04be3bb5ae07685b17394c3a322bde994900670b60983e7ead30dbfd7bc9cfec42b81d6c85890be52e618aa74afafc172dbbbfe19b01cc1cd6a4005907825dda

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
business43.web-hosting.com
Port:
587
Username:
[email protected]
Password:
P04042017

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4456-155-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

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:

EFS_SPEC.exe

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

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

EFS_SPEC.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	EFS_SPEC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	EFS_SPEC.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

EFS_SPEC.exe

description pid process target process

PID 2288 set thread context of 4456 2288 EFS_SPEC.exe EFS_SPEC.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

2580 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

EFS_SPEC.exepowershell.exeEFS_SPEC.exe

pid process

2288 EFS_SPEC.exe
2288 EFS_SPEC.exe
2288 EFS_SPEC.exe
4472 powershell.exe
4472 powershell.exe
2288 EFS_SPEC.exe
4456 EFS_SPEC.exe
4456 EFS_SPEC.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

EFS_SPEC.exepowershell.exeEFS_SPEC.exe

description pid process

Token: SeDebugPrivilege 2288 EFS_SPEC.exe
Token: SeDebugPrivilege 4472 powershell.exe
Token: SeDebugPrivilege 4456 EFS_SPEC.exe

description	pid	process	target process
PID 2288 set thread context of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe

pid	process
2580	schtasks.exe

pid	process
2288	EFS_SPEC.exe
2288	EFS_SPEC.exe
2288	EFS_SPEC.exe
4472	powershell.exe
4472	powershell.exe
2288	EFS_SPEC.exe
4456	EFS_SPEC.exe
4456	EFS_SPEC.exe

description	pid	process
Token: SeDebugPrivilege	2288	EFS_SPEC.exe
Token: SeDebugPrivilege	4472	powershell.exe
Token: SeDebugPrivilege	4456	EFS_SPEC.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

EFS_SPEC.exeEFS_SPEC.exe

description	pid	process	target process
PID 2288 wrote to memory of 4472	2288	EFS_SPEC.exe	powershell.exe
PID 2288 wrote to memory of 4472	2288	EFS_SPEC.exe	powershell.exe
PID 2288 wrote to memory of 4472	2288	EFS_SPEC.exe	powershell.exe
PID 2288 wrote to memory of 2580	2288	EFS_SPEC.exe	schtasks.exe
PID 2288 wrote to memory of 2580	2288	EFS_SPEC.exe	schtasks.exe
PID 2288 wrote to memory of 2580	2288	EFS_SPEC.exe	schtasks.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 2288 wrote to memory of 4456	2288	EFS_SPEC.exe	EFS_SPEC.exe
PID 4456 wrote to memory of 3672	4456	EFS_SPEC.exe	netsh.exe
PID 4456 wrote to memory of 3672	4456	EFS_SPEC.exe	netsh.exe
PID 4456 wrote to memory of 3672	4456	EFS_SPEC.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

EFS_SPEC.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	EFS_SPEC.exe

outlook_win_path 1 IoCs

Processes:

EFS_SPEC.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	EFS_SPEC.exe

C:\Users\Admin\AppData\Local\Temp\EFS_SPEC.exe
"C:\Users\Admin\AppData\Local\Temp\EFS_SPEC.exe"
1⤵
- Checks computer location settings
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2288

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4472

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eIQPiUga" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA354.tmp"
2⤵
- Creates scheduled task(s)
PID:2580

C:\Users\Admin\AppData\Local\Temp\EFS_SPEC.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4456

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:3672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\EFS_SPEC.exe.log

Filesize
1KB

MD5
400f1cc1a0a0ce1cdabda365ab3368ce

SHA1
1ecf683f14271d84f3b6063493dce00ff5f42075

SHA256
c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

SHA512
14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA354.tmp

Filesize
1KB

MD5
5485a1b0e763fffa2658e39c837d4da3

SHA1
fef801dbda6f1a5bedfc0c82c6a70369d245ad2d

SHA256
0a946bd8e3a60c618750f0534ba09e60121fbf2c0d2f712138a1dcecbc9dfeb1

SHA512
5bcbffbd9d13bd20732d41e720e67b3d51f82f2da0bae7327bea59b5888354fcf0adc8d6b83d36ad09fd7cce4fc6286a05420605533c475f4b98bb2f1e0d5f26

Download Submit
memory/2288-130-0x0000000000830000-0x000000000090A000-memory.dmp

Filesize
872KB

Download
memory/2288-131-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/2288-132-0x0000000005710000-0x00000000057A2000-memory.dmp

Filesize
584KB

Download
memory/2288-133-0x00000000057B0000-0x00000000057BA000-memory.dmp

Filesize
40KB

Download
memory/2288-134-0x0000000007850000-0x00000000078EC000-memory.dmp

Filesize
624KB

Download
memory/2580-152-0x0000000000000000-mapping.dmp

Download
memory/3672-158-0x0000000000000000-mapping.dmp

Download
memory/4456-157-0x00000000063E0000-0x0000000006430000-memory.dmp

Filesize
320KB

Download
memory/4456-155-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/4456-154-0x0000000000000000-mapping.dmp

Download
memory/4472-144-0x00000000060C0000-0x00000000060DE000-memory.dmp

Filesize
120KB

Download
memory/4472-151-0x0000000007140000-0x0000000007148000-memory.dmp

Filesize
32KB

Download
memory/4472-142-0x00000000060E0000-0x0000000006112000-memory.dmp

Filesize
200KB

Download
memory/4472-145-0x0000000007490000-0x0000000007B0A000-memory.dmp

Filesize
6.5MB

Download
memory/4472-146-0x0000000006E30000-0x0000000006E4A000-memory.dmp

Filesize
104KB

Download
memory/4472-147-0x0000000006EA0000-0x0000000006EAA000-memory.dmp

Filesize
40KB

Download
memory/4472-148-0x00000000070A0000-0x0000000007136000-memory.dmp

Filesize
600KB

Download
memory/4472-149-0x0000000007050000-0x000000000705E000-memory.dmp

Filesize
56KB

Download
memory/4472-150-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/4472-143-0x000000006FFD0000-0x000000007001C000-memory.dmp

Filesize
304KB

Download
memory/4472-141-0x0000000005A90000-0x0000000005AAE000-memory.dmp

Filesize
120KB

Download
memory/4472-140-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/4472-139-0x0000000005340000-0x00000000053A6000-memory.dmp

Filesize
408KB

Download
memory/4472-138-0x0000000004AE0000-0x0000000004B02000-memory.dmp

Filesize
136KB

Download
memory/4472-137-0x0000000004BA0000-0x00000000051C8000-memory.dmp

Filesize
6.2MB

Download
memory/4472-136-0x0000000002180000-0x00000000021B6000-memory.dmp

Filesize
216KB

Download
memory/4472-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads