agenttesla | d0410b6f47833d94097b4641df6b0d27cba6b84d29ee89cb27665d694e930fdb

General

Target

Invoice and client details.pdf'.exe
Size

493KB
MD5

ade7e98755e204c575754c578d9806b8
SHA1

5c833bf110f91e5ec7f541a2af60a7faf46fe0c8
SHA256

8bacca094f83e0486702d5c22a551a5a52ee7dab8ed6daad0b2881c57a1127ce
SHA512

f667354b0158c2f31c8c6253b4abdf77e214cac1f9bba083b5728dc980ea671630c47e370506a5df17588357074b966ec9ab4fc2314f8ee95fcb9291ec65dae2

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hotel71.com.bd
Port:
587
Username:
chat@hotel71.com.bd
Password:
9+^va&phP1v9

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/2036-56-0x00000000004E0000-0x00000000004E8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2044-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2044-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2044-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2044-64-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral1/memory/2044-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2044-68-0x0000000000400000-0x0000000000450000-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/2036-57-0x00000000073E0000-0x0000000007438000-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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Invoice and client details.pdf'.exe

description pid process target process

PID 2036 set thread context of 2044 2036 Invoice and client details.pdf'.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1184 REG.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Invoice and client details.pdf'.exeRegSvcs.exe

pid process

2036 Invoice and client details.pdf'.exe
2036 Invoice and client details.pdf'.exe
2044 RegSvcs.exe
2044 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Invoice and client details.pdf'.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 2036 Invoice and client details.pdf'.exe
Token: SeDebugPrivilege 2044 RegSvcs.exe

description	pid	process	target process
PID 2036 set thread context of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe

pid	process
1184	REG.exe

pid	process
2036	Invoice and client details.pdf'.exe
2036	Invoice and client details.pdf'.exe
2044	RegSvcs.exe
2044	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2036	Invoice and client details.pdf'.exe
Token: SeDebugPrivilege	2044	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Invoice and client details.pdf'.exeRegSvcs.exe

description	pid	process	target process
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2036 wrote to memory of 2044	2036	Invoice and client details.pdf'.exe	RegSvcs.exe
PID 2044 wrote to memory of 1184	2044	RegSvcs.exe	REG.exe
PID 2044 wrote to memory of 1184	2044	RegSvcs.exe	REG.exe
PID 2044 wrote to memory of 1184	2044	RegSvcs.exe	REG.exe
PID 2044 wrote to memory of 1184	2044	RegSvcs.exe	REG.exe
PID 2044 wrote to memory of 1896	2044	RegSvcs.exe	netsh.exe
PID 2044 wrote to memory of 1896	2044	RegSvcs.exe	netsh.exe
PID 2044 wrote to memory of 1896	2044	RegSvcs.exe	netsh.exe
PID 2044 wrote to memory of 1896	2044	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Invoice and client details.pdf'.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice and client details.pdf'.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036

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:2044

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:1184

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1896

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/1184-70-0x0000000000000000-mapping.dmp

Download
memory/1896-71-0x0000000000000000-mapping.dmp

Download
memory/2036-54-0x00000000013C0000-0x0000000001444000-memory.dmp

Filesize
528KB

Download
memory/2036-55-0x0000000000550000-0x00000000005AE000-memory.dmp

Filesize
376KB

Download
memory/2036-56-0x00000000004E0000-0x00000000004E8000-memory.dmp

Filesize
32KB

Download
memory/2036-57-0x00000000073E0000-0x0000000007438000-memory.dmp

Filesize
352KB

Download
memory/2044-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-64-0x000000000044AC5E-mapping.dmp

Download
memory/2044-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-69-0x0000000075521000-0x0000000075523000-memory.dmp

Filesize
8KB

Download
memory/2044-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2044-58-0x0000000000400000-0x0000000000450000-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