agenttesla | 4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0 | Triage

Analysis

max time kernel
43s
max time network
48s
platform
windows7_x64
resource
win7-20220414-en
submitted
01-07-2022 06:51

Sharing

Report Analysis Logs

General

Target

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
Size

645KB
MD5

e38a0737d98afb1ce2a1ec8810d15339
SHA1

aca4251310ceaee50daefb3e992804b8637ccd8a
SHA256

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0
SHA512

c861b7c2d6dcd6300ed91ff58edf781b8b8a256f3f3c71ae4490d1435477e4640c03e37610a4cd80ecfa305a23ae084f7281a6c19d4898dd010ee58800a30f32

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

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/1204-63-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1204-64-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1204-66-0x000000000045523E-mapping.dmp	family_agenttesla
behavioral1/memory/1204-65-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1204-68-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1204-70-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

Processes:

resource	yara_rule
behavioral1/memory/1564-57-0x0000000004EB0000-0x0000000004F12000-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

Email Collection

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.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	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

description	pid	process	target process
PID 1564 set thread context of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.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

1148 schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

pid	process
1204	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
1204	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

description pid process

Token: SeDebugPrivilege 1204 4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

pid process

1204 4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

description	pid	process	target process
PID 1564 wrote to memory of 1148	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	schtasks.exe
PID 1564 wrote to memory of 1148	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	schtasks.exe
PID 1564 wrote to memory of 1148	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	schtasks.exe
PID 1564 wrote to memory of 1148	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	schtasks.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
PID 1564 wrote to memory of 1204	1564	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

outlook_office_path 1 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.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	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

outlook_win_path 1 IoCs

Processes:

4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.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	4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe

C:\Users\Admin\AppData\Local\Temp\4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
"C:\Users\Admin\AppData\Local\Temp\4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1564

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xjZCQBWoWPwt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp291.tmp"
2⤵
- Creates scheduled task(s)
PID:1148

C:\Users\Admin\AppData\Local\Temp\4c53652f67c049b1abe6b0728af295376d5cec9c6e5bf765240482ef550365f0.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1204

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Credential Access

Credentials in Files

Discovery

System Information Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp291.tmp
Filesize
1KB

MD5
6884d118841aa7efdf2da635d9606ae2

SHA1
f30c263cafa4e47c651d08df984d1b56cef7ae77

SHA256
daa35c62c430865febd9a617f475952e17782c1761b2ac4c9d1b3d238ad28d5a

SHA512
84c68d73be864d886a1c771baa8f1acdf6bbfedc24921901f8de51fc67c0c5d3040a9486d4d4e0a952b22d74b77e3de24e6c65c4d75b7cb597166064b5da185c

Download Submit
memory/1148-58-0x0000000000000000-mapping.dmp

Download
memory/1204-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-60-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-61-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-63-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-66-0x000000000045523E-mapping.dmp

Download
memory/1204-65-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-68-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-70-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1204-72-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/1564-57-0x0000000004EB0000-0x0000000004F12000-memory.dmp

Filesize
392KB

Download
memory/1564-56-0x0000000000310000-0x0000000000318000-memory.dmp

Filesize
32KB

Download
memory/1564-55-0x0000000075CD1000-0x0000000075CD3000-memory.dmp

Filesize
8KB

Download
memory/1564-54-0x0000000000DC0000-0x0000000000E68000-memory.dmp

Filesize
672KB

Download