agenttesla | 3fd79827f1a6997012f6cf1a69bcc6e939f4792e6fc08c08ad8202cd660eba9f

General

Target

inquiry_052019_list.xlsx.exe
Size

399KB
MD5

43728c30a355702a47c8189c08f84661
SHA1

790873601f3d12522873f86ca1a87bf922f83205
SHA256

cecdf155db1d228bc153ebe762d7970bd6a64e81cf5f977343f906a1e1d56e44
SHA512

b2d0882d5392007364e5f605c405b98a375e34dec63be5d16d9fae374313336fa13edbb6b8894334afb409833ffc0dbbc9be3d7b4263bdf5b77dbff9f2182e1e

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
335410

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/1472-56-0x00000000003B0000-0x00000000003B8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1812-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1812-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1812-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1812-64-0x000000000044C82E-mapping.dmp	family_agenttesla
behavioral1/memory/1812-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1812-68-0x0000000000400000-0x0000000000452000-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/1472-57-0x0000000004D30000-0x0000000004D88000-memory.dmp	rezer0

Drops file in Drivers directory 1 IoCs

Processes:

inquiry_052019_list.xlsx.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts inquiry_052019_list.xlsx.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	inquiry_052019_list.xlsx.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

inquiry_052019_list.xlsx.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry_052019_list.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry_052019_list.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry_052019_list.xlsx.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

inquiry_052019_list.xlsx.exe

description pid process target process

PID 1472 set thread context of 1812 1472 inquiry_052019_list.xlsx.exe inquiry_052019_list.xlsx.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

inquiry_052019_list.xlsx.exe

pid process

1812 inquiry_052019_list.xlsx.exe
1812 inquiry_052019_list.xlsx.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

inquiry_052019_list.xlsx.exe

description pid process

Token: SeDebugPrivilege 1812 inquiry_052019_list.xlsx.exe

description	pid	process	target process
PID 1472 set thread context of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe

pid	process
1812	inquiry_052019_list.xlsx.exe
1812	inquiry_052019_list.xlsx.exe

description	pid	process
Token: SeDebugPrivilege	1812	inquiry_052019_list.xlsx.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

inquiry_052019_list.xlsx.exeinquiry_052019_list.xlsx.exe

description	pid	process	target process
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1472 wrote to memory of 1812	1472	inquiry_052019_list.xlsx.exe	inquiry_052019_list.xlsx.exe
PID 1812 wrote to memory of 1868	1812	inquiry_052019_list.xlsx.exe	netsh.exe
PID 1812 wrote to memory of 1868	1812	inquiry_052019_list.xlsx.exe	netsh.exe
PID 1812 wrote to memory of 1868	1812	inquiry_052019_list.xlsx.exe	netsh.exe
PID 1812 wrote to memory of 1868	1812	inquiry_052019_list.xlsx.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

inquiry_052019_list.xlsx.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry_052019_list.xlsx.exe

outlook_win_path 1 IoCs

Processes:

inquiry_052019_list.xlsx.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry_052019_list.xlsx.exe

C:\Users\Admin\AppData\Local\Temp\inquiry_052019_list.xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\inquiry_052019_list.xlsx.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1472

C:\Users\Admin\AppData\Local\Temp\inquiry_052019_list.xlsx.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1812

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1868

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/1472-54-0x0000000001060000-0x00000000010CA000-memory.dmp

Filesize
424KB

Download
memory/1472-55-0x0000000074F21000-0x0000000074F23000-memory.dmp

Filesize
8KB

Download
memory/1472-56-0x00000000003B0000-0x00000000003B8000-memory.dmp

Filesize
32KB

Download
memory/1472-57-0x0000000004D30000-0x0000000004D88000-memory.dmp

Filesize
352KB

Download
memory/1812-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-64-0x000000000044C82E-mapping.dmp

Download
memory/1812-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1812-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1868-70-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads