agenttesla | 0488d3966041b187b5d62264bec104c0e4e066be4facd1ae0d36af93f4eef6ed

General

Target

Arrival_Notice00011004pdf.exe
Size

549KB
MD5

d519245ca87707045f65b3194dbf112e
SHA1

c164d290dbdeec322577695ee9e9ae263ea32a0d
SHA256

b93b2e06a2a845fe91bb512887e32848cade8cf97741f7e3f440405b388ef9ad
SHA512

ed91dabb8a308cbd7f31ff0142c3039da67c6b3e0be809ba5a6f6c6b08003d09d1476f7a162749c3ca62d9388bcc1f172c3dd9df2f5fbd2ee60b7fb1785d7fd4

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.karmachalets.co.in
Port:
587
Username:
[email protected]
Password:
Akshya@123

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/2020-57-0x00000000005D0000-0x00000000005D8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1780-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1780-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1780-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1780-67-0x000000000044C8DE-mapping.dmp	family_agenttesla
behavioral1/memory/1780-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1780-71-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/2020-54-0x0000000000210000-0x00000000002A0000-memory.dmp	coreccc

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/2020-58-0x00000000048E0000-0x0000000004938000-memory.dmp	rezer0

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Arrival_Notice00011004pdf.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	Arrival_Notice00011004pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Arrival_Notice00011004pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Arrival_Notice00011004pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Arrival_Notice00011004pdf.exe

description pid process target process

PID 2020 set thread context of 1780 2020 Arrival_Notice00011004pdf.exe Arrival_Notice00011004pdf.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

736 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Arrival_Notice00011004pdf.exeArrival_Notice00011004pdf.exe

pid process

2020 Arrival_Notice00011004pdf.exe
1780 Arrival_Notice00011004pdf.exe
1780 Arrival_Notice00011004pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Arrival_Notice00011004pdf.exeArrival_Notice00011004pdf.exe

description pid process

Token: SeDebugPrivilege 2020 Arrival_Notice00011004pdf.exe
Token: SeDebugPrivilege 1780 Arrival_Notice00011004pdf.exe

description	pid	process	target process
PID 2020 set thread context of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe

pid	process
736	schtasks.exe

pid	process
2020	Arrival_Notice00011004pdf.exe
1780	Arrival_Notice00011004pdf.exe
1780	Arrival_Notice00011004pdf.exe

description	pid	process
Token: SeDebugPrivilege	2020	Arrival_Notice00011004pdf.exe
Token: SeDebugPrivilege	1780	Arrival_Notice00011004pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Arrival_Notice00011004pdf.exeArrival_Notice00011004pdf.exe

description	pid	process	target process
PID 2020 wrote to memory of 736	2020	Arrival_Notice00011004pdf.exe	schtasks.exe
PID 2020 wrote to memory of 736	2020	Arrival_Notice00011004pdf.exe	schtasks.exe
PID 2020 wrote to memory of 736	2020	Arrival_Notice00011004pdf.exe	schtasks.exe
PID 2020 wrote to memory of 736	2020	Arrival_Notice00011004pdf.exe	schtasks.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 2020 wrote to memory of 1780	2020	Arrival_Notice00011004pdf.exe	Arrival_Notice00011004pdf.exe
PID 1780 wrote to memory of 288	1780	Arrival_Notice00011004pdf.exe	netsh.exe
PID 1780 wrote to memory of 288	1780	Arrival_Notice00011004pdf.exe	netsh.exe
PID 1780 wrote to memory of 288	1780	Arrival_Notice00011004pdf.exe	netsh.exe
PID 1780 wrote to memory of 288	1780	Arrival_Notice00011004pdf.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Arrival_Notice00011004pdf.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	Arrival_Notice00011004pdf.exe

outlook_win_path 1 IoCs

Processes:

Arrival_Notice00011004pdf.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	Arrival_Notice00011004pdf.exe

C:\Users\Admin\AppData\Local\Temp\Arrival_Notice00011004pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Arrival_Notice00011004pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bFGTvh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A15.tmp"
2⤵
- Creates scheduled task(s)
PID:736

C:\Users\Admin\AppData\Local\Temp\Arrival_Notice00011004pdf.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1780

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:288

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3A15.tmp
Filesize
1KB

MD5
8a704a765f29eafb7d443ea5dc1e0049

SHA1
6ac2b05d5fe49fb9bc52528075bc661c90b196bc

SHA256
a5bea7273b92166e918b5d8b0fec540f97760ad4673bf3b112a65e340a143128

SHA512
b47bf3001ca094f7e407af141a2b2488a2bd589051b03bd79d4181e78da96a9990231a419595a2034b9a2a53487389a79fb64acbdbf2081453d1d2f5f5d20955

Download Submit
memory/288-73-0x0000000000000000-mapping.dmp

Download
memory/736-59-0x0000000000000000-mapping.dmp

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memory/1780-67-0x000000000044C8DE-mapping.dmp

Download
memory/1780-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

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memory/1780-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

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memory/1780-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1780-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1780-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1780-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1780-71-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2020-58-0x00000000048E0000-0x0000000004938000-memory.dmp

Filesize
352KB

Download
memory/2020-57-0x00000000005D0000-0x00000000005D8000-memory.dmp

Filesize
32KB

Download
memory/2020-56-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/2020-54-0x0000000000210000-0x00000000002A0000-memory.dmp

Filesize
576KB

Download
memory/2020-55-0x0000000001EB0000-0x0000000001F14000-memory.dmp

Filesize
400KB

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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