agenttesla | 62f7752268a1df25462c61c1718174a30e5b5b4c3f2f3e11fb7e7dee5c870087

General

Target

New Request.exe
Size

553KB
MD5

abf16f4f5482738b53393f835dd6b9f9
SHA1

989529e1969a6b971a632a176862d5291fc5e2a1
SHA256

0b6118c17d89a24512971b9190cf4e76b54e0f02cb06d23d899a17feb9fc64f3
SHA512

e8dca4d90155c920b11cb2ebf44f65b93374b532a1c5f757937676939f68f254234318aa057b67ae32fdeae31f334f99218c2cb51fed27d3d1bf490317e42e04

Score

10^/10

agenttesla snakebot collection coreentity keylogger rezer0 snakebot spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
dmkozlovd@yandex.ru
Password:
Starboy@22

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1868-56-0x0000000000330000-0x0000000000338000-memory.dmp	coreentity

SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1260-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1260-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1260-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1260-66-0x000000000044A6CE-mapping.dmp	family_agenttesla
behavioral1/memory/1260-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1260-70-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral1/memory/1868-54-0x0000000000820000-0x00000000008B4000-memory.dmp	snakebot_strings

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1868-57-0x0000000004CE0000-0x0000000004D36000-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:

New Request.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	New Request.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	New Request.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	New Request.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

New Request.exe

description pid process target process

PID 1868 set thread context of 1260 1868 New Request.exe New Request.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

948 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

New Request.exe

pid process

1260 New Request.exe
1260 New Request.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

New Request.exeNew Request.exe

description pid process

Token: SeDebugPrivilege 1868 New Request.exe
Token: SeDebugPrivilege 1260 New Request.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

New Request.exeNew Request.exe

pid process

1868 New Request.exe
1868 New Request.exe
1260 New Request.exe

description	pid	process	target process
PID 1868 set thread context of 1260	1868	New Request.exe	New Request.exe

pid	process
948	schtasks.exe

pid	process
1260	New Request.exe
1260	New Request.exe

description	pid	process
Token: SeDebugPrivilege	1868	New Request.exe
Token: SeDebugPrivilege	1260	New Request.exe

pid	process
1868	New Request.exe
1868	New Request.exe
1260	New Request.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

New Request.exe

description	pid	process	target process
PID 1868 wrote to memory of 948	1868	New Request.exe	schtasks.exe
PID 1868 wrote to memory of 948	1868	New Request.exe	schtasks.exe
PID 1868 wrote to memory of 948	1868	New Request.exe	schtasks.exe
PID 1868 wrote to memory of 948	1868	New Request.exe	schtasks.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe
PID 1868 wrote to memory of 1260	1868	New Request.exe	New Request.exe

outlook_office_path 1 IoCs

Processes:

New Request.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	New Request.exe

outlook_win_path 1 IoCs

Processes:

New Request.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	New Request.exe

C:\Users\Admin\AppData\Local\Temp\New Request.exe
"C:\Users\Admin\AppData\Local\Temp\New Request.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\suCEFwS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp117F.tmp"
2⤵
- Creates scheduled task(s)
PID:948

C:\Users\Admin\AppData\Local\Temp\New Request.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:1260

Network

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\tmp117F.tmp
Filesize
1KB

MD5
ae4ab881a0eca59ccdd4f137ef50cc56

SHA1
4897b4b342c415a911ac64b5bb4498d431a2f2ca

SHA256
00a9ff61b2d1295a0136a386cad421a79f89bc807524170dd6e304032929ed7c

SHA512
0e1dbaef1578178902d49f62af53d1e2d9d85c20408243d87366e1cb203bb9650bdbb837d6910e9b3559bec34ed70017930d11595abb91bde5deb2487468c192

Download Submit
memory/948-58-0x0000000000000000-mapping.dmp

Download
memory/1260-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-66-0x000000000044A6CE-mapping.dmp

Download
memory/1260-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1260-71-0x0000000075541000-0x0000000075543000-memory.dmp

Filesize
8KB

Download
memory/1868-57-0x0000000004CE0000-0x0000000004D36000-memory.dmp

Filesize
344KB

Download
memory/1868-56-0x0000000000330000-0x0000000000338000-memory.dmp

Filesize
32KB

Download
memory/1868-55-0x00000000006A0000-0x00000000006FE000-memory.dmp

Filesize
376KB

Download
memory/1868-54-0x0000000000820000-0x00000000008B4000-memory.dmp

Filesize
592KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads