agenttesla | 24c1aaf05d9c072a31960965cf14f2fd6532e03a81afd0dd600e29e0f9f4952f

General

Target

INV001.exe
Size

433KB
MD5

8653227bbe999935f8e9b088ceb39edc
SHA1

e210a370fd4fcdb72c097c17edef4b5afd726542
SHA256

d09cbb481136d7766db12c79dc6c82fee1eb89056d4e7b8bc989a7a5d38467af
SHA512

bbbbf945176804261628162dd13aa46e010e7ed1c6c46318743c4bbd912ae36ac660e2734d6a03384ff268a4bf12dbf67d1089eefb3e379793685bde90f256b2

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
!9aT1sz8?9SqN

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1308-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1308-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1308-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1308-66-0x000000000044C7BE-mapping.dmp	family_agenttesla
behavioral1/memory/1308-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1308-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1972-56-0x0000000001F80000-0x0000000001FDA000-memory.dmp	rezer0

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:

INV001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV001.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INV001.exe

description pid process target process

PID 1972 set thread context of 1308 1972 INV001.exe INV001.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

1512 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

INV001.exeINV001.exe

pid process

1972 INV001.exe
1972 INV001.exe
1308 INV001.exe
1308 INV001.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

INV001.exeINV001.exe

description pid process

Token: SeDebugPrivilege 1972 INV001.exe
Token: SeDebugPrivilege 1308 INV001.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

INV001.exe

pid process

1308 INV001.exe

description	pid	process	target process
PID 1972 set thread context of 1308	1972	INV001.exe	INV001.exe

pid	process
1512	schtasks.exe

pid	process
1972	INV001.exe
1972	INV001.exe
1308	INV001.exe
1308	INV001.exe

description	pid	process
Token: SeDebugPrivilege	1972	INV001.exe
Token: SeDebugPrivilege	1308	INV001.exe

pid	process
1308	INV001.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

INV001.exeINV001.exe

description	pid	process	target process
PID 1972 wrote to memory of 1512	1972	INV001.exe	schtasks.exe
PID 1972 wrote to memory of 1512	1972	INV001.exe	schtasks.exe
PID 1972 wrote to memory of 1512	1972	INV001.exe	schtasks.exe
PID 1972 wrote to memory of 1512	1972	INV001.exe	schtasks.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1972 wrote to memory of 1308	1972	INV001.exe	INV001.exe
PID 1308 wrote to memory of 472	1308	INV001.exe	netsh.exe
PID 1308 wrote to memory of 472	1308	INV001.exe	netsh.exe
PID 1308 wrote to memory of 472	1308	INV001.exe	netsh.exe
PID 1308 wrote to memory of 472	1308	INV001.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

INV001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV001.exe

outlook_win_path 1 IoCs

Processes:

INV001.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV001.exe

C:\Users\Admin\AppData\Local\Temp\INV001.exe
"C:\Users\Admin\AppData\Local\Temp\INV001.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GmJplnEAhO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D1.tmp"
2⤵
- Creates scheduled task(s)
PID:1512

C:\Users\Admin\AppData\Local\Temp\INV001.exe
"C:\Users\Admin\AppData\Local\Temp\INV001.exe"
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:1308

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:472

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

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

C:\Users\Admin\AppData\Local\Temp\tmp9D1.tmp
Filesize
1KB

MD5
10f73c7f93de8166613f5bb6c94d74ac

SHA1
cf4e56a992a99c07ec3e79f1fb7ebe116473a7e5

SHA256
c31576fdfb1ab933af345db925f478eba4f914c3eeb346c97df8d5960865b374

SHA512
e8ead2a71fd51bcaa021c732a7044ca3105c3a84ef125f7f9594644a2c3ce1a9539812b064503fd63d0c1dd115dcb17a66f465940ee85b31bddf68e0c734a6be

Download Submit
memory/472-72-0x0000000000000000-mapping.dmp

Download
memory/1308-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-66-0x000000000044C7BE-mapping.dmp

Download
memory/1308-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1308-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1512-58-0x0000000000000000-mapping.dmp

Download
memory/1972-57-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download
memory/1972-56-0x0000000001F80000-0x0000000001FDA000-memory.dmp

Filesize
360KB

Download
memory/1972-54-0x00000000000A0000-0x0000000000112000-memory.dmp

Filesize
456KB

Download
memory/1972-55-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads