agenttesla | 3f9f72ec6bd759569e783528a4a2e0426472dfae328af93afbf9da273e92adf5

General

Target

Image001.exe
Size

612KB
MD5

ff1b46d412d2890828fdeee1d983dea1
SHA1

2c2c60bc32b11f866aed66f29ce30c362b352567
SHA256

3f9f72ec6bd759569e783528a4a2e0426472dfae328af93afbf9da273e92adf5
SHA512

d6ea42338428fc9da1552c1879b334b4a70f121eb9c3fce31b513bc86f2eca5a7ba7bb17a6ec059910b2fda3f2bb6717a975828f6de985630d0420bde153333b

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cgyasc.com
Port:
587
Username:
castilloo@cgyasc.com
Password:
Castle1

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2320-119-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/2320-120-0x000000000040188B-mapping.dmp	family_agenttesla
behavioral2/memory/2320-121-0x0000000002330000-0x0000000002367000-memory.dmp	family_agenttesla
behavioral2/memory/2320-125-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

Image001.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Image001.exe
Loads dropped DLL 1 IoCs

Processes:

Image001.exe

pid process

3348 Image001.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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Image001.exe

pid	process
3348	Image001.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Image001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Image001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Image001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Image001.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Image001.exe

description pid process target process

PID 3348 set thread context of 2320 3348 Image001.exe Image001.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Image001.exe

pid process

2320 Image001.exe
2320 Image001.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Image001.exe

description pid process

Token: SeDebugPrivilege 2320 Image001.exe

description	pid	process	target process
PID 3348 set thread context of 2320	3348	Image001.exe	Image001.exe

pid	process
2320	Image001.exe
2320	Image001.exe

description	pid	process
Token: SeDebugPrivilege	2320	Image001.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Image001.exe

description	pid	process	target process
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe
PID 3348 wrote to memory of 2320	3348	Image001.exe	Image001.exe

outlook_office_path 1 IoCs

Processes:

Image001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Image001.exe

outlook_win_path 1 IoCs

Processes:

Image001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Image001.exe

C:\Users\Admin\AppData\Local\Temp\Image001.exe
"C:\Users\Admin\AppData\Local\Temp\Image001.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3348

C:\Users\Admin\AppData\Local\Temp\Image001.exe
"C:\Users\Admin\AppData\Local\Temp\Image001.exe"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2320

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nscA385.tmp\aryw.dll
MD5
b1d39a59acc5c67685d5898e25ad7874

SHA1
c71b2d3960daec838ca13cd4890b1f4d1589b09b

SHA256
0a94e73c19307113508e6a6103ef6abfe7c77bc61be29eca172c97f86fddb6cc

SHA512
e71c6ddd29a41f358c5667f667606a9ef1aa1334ac6ce3059b7b81f34279482bcf24e90c74416fbe088103d1d2c4ac048e8a74b82bff414dce86af2ea67f0450

Download Submit
memory/2320-119-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2320-120-0x000000000040188B-mapping.dmp

Download
memory/2320-121-0x0000000002330000-0x0000000002367000-memory.dmp

Filesize
220KB

Download
memory/2320-123-0x0000000004A20000-0x0000000004A21000-memory.dmp

Filesize
4KB

Download
memory/2320-124-0x0000000004960000-0x0000000004961000-memory.dmp

Filesize
4KB

Download
memory/2320-126-0x0000000004A10000-0x0000000004A11000-memory.dmp

Filesize
4KB

Download
memory/2320-125-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2320-127-0x0000000004A12000-0x0000000004A13000-memory.dmp

Filesize
4KB

Download
memory/2320-128-0x0000000004A13000-0x0000000004A14000-memory.dmp

Filesize
4KB

Download
memory/2320-129-0x0000000004A14000-0x0000000004A15000-memory.dmp

Filesize
4KB

Download
memory/2320-130-0x00000000057B0000-0x00000000057B1000-memory.dmp

Filesize
4KB

Download
memory/2320-131-0x00000000057E0000-0x00000000057E1000-memory.dmp

Filesize
4KB

Download
memory/2320-132-0x0000000005B90000-0x0000000005B91000-memory.dmp

Filesize
4KB

Download
memory/2320-133-0x0000000005680000-0x0000000005681000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads