agenttesla | 3a4acc44cfecb679c5cc9dab88989065b2735dca8f669efaee948fd01a38f748

General

Target

3a4acc44.exe
Size

877KB
MD5

7d0449b813d5e482283d9af021fe1f97
SHA1

a9132296eeb71feb5a1cb5f4003873720e387ace
SHA256

3a4acc44cfecb679c5cc9dab88989065b2735dca8f669efaee948fd01a38f748
SHA512

adaf288bffe86ad4b871d4a8f2a592bb96a6249b98f777b66ecbe3aceff91c9cb358b594287d785162d8cb511e3450e08e2e84365d90658de44cf8992d8e70a6

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
foodbiotechnology@meetingsemail.com
Password:
terrin2233

Signatures

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

AgentTesla Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1656-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1656-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1656-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1656-66-0x00000000004375AE-mapping.dmp	family_agenttesla
behavioral1/memory/1656-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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:

3a4acc44.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3a4acc44.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3a4acc44.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3a4acc44.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3a4acc44.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\nwlrFL = "C:\\Users\\Admin\\AppData\\Roaming\\nwlrFL\\nwlrFL.exe"	3a4acc44.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

3a4acc44.exe

description pid process target process

PID 1836 set thread context of 1656 1836 3a4acc44.exe 3a4acc44.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

3a4acc44.exe

pid process

1656 3a4acc44.exe
1656 3a4acc44.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

3a4acc44.exe

description pid process

Token: SeDebugPrivilege 1656 3a4acc44.exe

description	pid	process	target process
PID 1836 set thread context of 1656	1836	3a4acc44.exe	3a4acc44.exe

pid	process
1656	3a4acc44.exe
1656	3a4acc44.exe

description	pid	process
Token: SeDebugPrivilege	1656	3a4acc44.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

3a4acc44.exe

description	pid	process	target process
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe
PID 1836 wrote to memory of 1656	1836	3a4acc44.exe	3a4acc44.exe

outlook_office_path 1 IoCs

Processes:

3a4acc44.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3a4acc44.exe

outlook_win_path 1 IoCs

Processes:

3a4acc44.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3a4acc44.exe

C:\Users\Admin\AppData\Local\Temp\3a4acc44.exe
"C:\Users\Admin\AppData\Local\Temp\3a4acc44.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1836

C:\Users\Admin\AppData\Local\Temp\3a4acc44.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1656

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1656-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1656-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1656-70-0x00000000047D1000-0x00000000047D2000-memory.dmp

Filesize
4KB

Download
memory/1656-69-0x00000000047D0000-0x00000000047D1000-memory.dmp

Filesize
4KB

Download
memory/1656-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1656-66-0x00000000004375AE-mapping.dmp

Download
memory/1656-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1656-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1656-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1836-54-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/1836-56-0x0000000075A71000-0x0000000075A73000-memory.dmp

Filesize
8KB

Download
memory/1836-60-0x0000000000AE0000-0x0000000000B19000-memory.dmp

Filesize
228KB

Download
memory/1836-59-0x00000000021A0000-0x000000000221F000-memory.dmp

Filesize
508KB

Download
memory/1836-58-0x0000000000250000-0x000000000025E000-memory.dmp

Filesize
56KB

Download
memory/1836-57-0x0000000004E90000-0x0000000004E91000-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