agenttesla | 72cd770832a37bf59afc53b9bc86abc8df0db30f0da2c47beaed44b05a9c3ec2

General

Target

RFQ-000083832.exe
Size

455KB
MD5

6af267ac464e76c1d7c0b39c258ae7dd
SHA1

cf073432e9f3a54723ca6b8ea68f90f4ac054630
SHA256

2ed3c334493409927240f012d70190ef7feca44e27416cede763011ac187c4ef
SHA512

7ed13d0e9fd6406c98678f9ba8f44d64c1d8297c469e55691a906306416229209dc6a3915b07f4a146cfb581651f285c7d16e14a03823736cd8fe07ab3138c1e

Score

10^/10

agenttesla collection 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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1796-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1796-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1796-64-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral1/memory/1796-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1796-68-0x0000000000400000-0x0000000000450000-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/1960-57-0x00000000048C0000-0x0000000004916000-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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ-000083832.exe

description pid process target process

PID 1960 set thread context of 1796 1960 RFQ-000083832.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

752 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1796 RegSvcs.exe
1796 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ-000083832.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1960 RFQ-000083832.exe
Token: SeDebugPrivilege 1796 RegSvcs.exe

description	pid	process	target process
PID 1960 set thread context of 1796	1960	RFQ-000083832.exe	RegSvcs.exe

pid	process
752	REG.exe

pid	process
1796	RegSvcs.exe
1796	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1960	RFQ-000083832.exe
Token: SeDebugPrivilege	1796	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

RFQ-000083832.exeRegSvcs.exe

description	pid	process	target process
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1960 wrote to memory of 1796	1960	RFQ-000083832.exe	RegSvcs.exe
PID 1796 wrote to memory of 752	1796	RegSvcs.exe	REG.exe
PID 1796 wrote to memory of 752	1796	RegSvcs.exe	REG.exe
PID 1796 wrote to memory of 752	1796	RegSvcs.exe	REG.exe
PID 1796 wrote to memory of 752	1796	RegSvcs.exe	REG.exe
PID 1796 wrote to memory of 2016	1796	RegSvcs.exe	netsh.exe
PID 1796 wrote to memory of 2016	1796	RegSvcs.exe	netsh.exe
PID 1796 wrote to memory of 2016	1796	RegSvcs.exe	netsh.exe
PID 1796 wrote to memory of 2016	1796	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\RFQ-000083832.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-000083832.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1960

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:1796

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:752

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:2016

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/752-70-0x0000000000000000-mapping.dmp

Download
memory/1796-64-0x000000000044ABAE-mapping.dmp

Download
memory/1796-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1796-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1960-56-0x0000000000340000-0x0000000000348000-memory.dmp

Filesize
32KB

Download
memory/1960-57-0x00000000048C0000-0x0000000004916000-memory.dmp

Filesize
344KB

Download
memory/1960-54-0x0000000000BB0000-0x0000000000C2C000-memory.dmp

Filesize
496KB

Download
memory/1960-55-0x0000000075381000-0x0000000075383000-memory.dmp

Filesize
8KB

Download
memory/2016-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads