agenttesla | 0d2671309e0ab3c8145965e9d11bfa16c5f8e21990c92cb692d904ece10bb48f

General

Target

LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe
Size

411KB
MD5

cff3e5019bd36f4a7596fe229c9e6a2f
SHA1

b7d7e42f24cb3c3ef10497a64398a888790dcbb0
SHA256

9950693e7a2ed5a37008ea3a7c2a185132af4f3fedfbbba41fb03939dadb8044
SHA512

67e13ab5417c8751b956fd429b13fe11291d0263699c4e8f253b7ab4e266b4b2afb1411ed0907b69d84c549d03c7f5398ff885d864899d743d200f7a222b5031

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hotel71.com.bd
Port:
587
Username:
[email protected]
Password:
9+^va&phP1v9

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4384-136-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

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
Suspicious use of SetThreadContext 1 IoCs

Processes:

LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe

description pid process target process

PID 4156 set thread context of 4384 4156 LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe RegSvcs.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3700 4384 WerFault.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1640 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

4384 RegSvcs.exe
4384 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 4384 RegSvcs.exe

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

description	pid	process	target process
PID 4156 set thread context of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe

pid	pid_target	process	target process
3700	4384	WerFault.exe	RegSvcs.exe

pid	process
1640	REG.exe

pid	process
4384	RegSvcs.exe
4384	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4384	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exeRegSvcs.exe

description	pid	process	target process
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4156 wrote to memory of 4384	4156	LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe	RegSvcs.exe
PID 4384 wrote to memory of 1640	4384	RegSvcs.exe	REG.exe
PID 4384 wrote to memory of 1640	4384	RegSvcs.exe	REG.exe
PID 4384 wrote to memory of 1640	4384	RegSvcs.exe	REG.exe

C:\Users\Admin\AppData\Local\Temp\LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe
"C:\Users\Admin\AppData\Local\Temp\LEGAL ACTION ON YOUR COMPANY FOR LONG OVERDUE INVOICE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4156

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4384

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:1640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1560
3⤵
- Program crash
PID:3700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4384 -ip 4384
1⤵
PID:1472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1640-138-0x0000000000000000-mapping.dmp

Download
memory/4156-130-0x0000000000E00000-0x0000000000E6E000-memory.dmp

Filesize
440KB

Download
memory/4156-131-0x0000000005E20000-0x00000000063C4000-memory.dmp

Filesize
5.6MB

Download
memory/4156-132-0x0000000005870000-0x0000000005902000-memory.dmp

Filesize
584KB

Download
memory/4156-133-0x0000000005810000-0x000000000581A000-memory.dmp

Filesize
40KB

Download
memory/4156-134-0x0000000009310000-0x00000000093AC000-memory.dmp

Filesize
624KB

Download
memory/4384-135-0x0000000000000000-mapping.dmp

Download
memory/4384-136-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4384-137-0x00000000066D0000-0x0000000006736000-memory.dmp

Filesize
408KB

Download
memory/4384-139-0x0000000006EE0000-0x0000000006F30000-memory.dmp

Filesize
320KB

Download

Analysis

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