agenttesla | b1400605c43b2ecb15fca9132f558cc4aafa2e78058e52d9929b9b0a0cb6972b

General

Target

BANK DETAILS.exe
Size

592KB
MD5

d8c4f79c53e551b8fc73c4411996d907
SHA1

99630818dff1e7b6f5ef56b766d70ba12411c5ee
SHA256

a083e924898a75762310530246d06bdadd4507aa660a62a9e5913c7862ba0152
SHA512

e8351ebbe95efb29b5207960436dd27ec913d6eeafe16f7a59131a7e9ecb6c56bc1f29ea15376d975d1a7a6c236d6fadaeddae970f86923dd7c38ca317452cb6

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pptoursperu.com
Port:
587
Username:
[email protected]
Password:
mailppt2019-

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/1120-56-0x0000000000320000-0x0000000000328000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1916-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1916-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1916-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1916-64-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral1/memory/1916-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1916-68-0x0000000000400000-0x0000000000450000-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/1120-57-0x0000000004790000-0x00000000047E6000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

BANK DETAILS.exe

description pid process target process

PID 1120 set thread context of 1916 1120 BANK DETAILS.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1060 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1916 RegSvcs.exe
1916 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1916 RegSvcs.exe

description	pid	process	target process
PID 1120 set thread context of 1916	1120	BANK DETAILS.exe	RegSvcs.exe

pid	process
1060	REG.exe

pid	process
1916	RegSvcs.exe
1916	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1916	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

BANK DETAILS.exeRegSvcs.exe

description	pid	process	target process
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1120 wrote to memory of 1916	1120	BANK DETAILS.exe	RegSvcs.exe
PID 1916 wrote to memory of 1060	1916	RegSvcs.exe	REG.exe
PID 1916 wrote to memory of 1060	1916	RegSvcs.exe	REG.exe
PID 1916 wrote to memory of 1060	1916	RegSvcs.exe	REG.exe
PID 1916 wrote to memory of 1060	1916	RegSvcs.exe	REG.exe
PID 1916 wrote to memory of 364	1916	RegSvcs.exe	netsh.exe
PID 1916 wrote to memory of 364	1916	RegSvcs.exe	netsh.exe
PID 1916 wrote to memory of 364	1916	RegSvcs.exe	netsh.exe
PID 1916 wrote to memory of 364	1916	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\BANK DETAILS.exe
"C:\Users\Admin\AppData\Local\Temp\BANK DETAILS.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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:1916

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:1060

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:364

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/364-71-0x0000000000000000-mapping.dmp

Download
memory/1060-70-0x0000000000000000-mapping.dmp

Download
memory/1120-54-0x00000000000C0000-0x000000000015A000-memory.dmp

Filesize
616KB

Download
memory/1120-55-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download
memory/1120-56-0x0000000000320000-0x0000000000328000-memory.dmp

Filesize
32KB

Download
memory/1120-57-0x0000000004790000-0x00000000047E6000-memory.dmp

Filesize
344KB

Download
memory/1916-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-64-0x000000000044ABAE-mapping.dmp

Download
memory/1916-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1916-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads