agenttesla | ccf7a39b671a887f52335591049453adcca65863fc1b8edd1828d552c23d1ab2

General

Target

EUROCargoFO0005962320.exe
Size

424KB
MD5

02ad34cc75ffd8091df65b7f4c0b0ab4
SHA1

e264c9a14bd91153edf3b35773011bc5b912b48d
SHA256

0fdd378395c3c909429366bdd2d59fc8d2a04e47d9954b101da81be15b583c77
SHA512

58e8bad4fbd0dd000ac0dd4f109647baf72b16920b973008c43d0023ceb8cd91628222eb3ce196d25d1ceca36b240a592d40151fe831a6ff73675c83859f6844

Score

10^/10

agenttesla collection coreentity evasion 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/1936-56-0x00000000004E0000-0x00000000004E8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1376-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1376-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1376-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1376-66-0x000000000044C8DE-mapping.dmp	family_agenttesla
behavioral1/memory/1376-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1376-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1936-57-0x0000000004E10000-0x0000000004E68000-memory.dmp	rezer0

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EUROCargoFO0005962320.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	EUROCargoFO0005962320.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	EUROCargoFO0005962320.exe

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:

EUROCargoFO0005962320.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	EUROCargoFO0005962320.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	EUROCargoFO0005962320.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	EUROCargoFO0005962320.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

EUROCargoFO0005962320.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	EUROCargoFO0005962320.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	EUROCargoFO0005962320.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

EUROCargoFO0005962320.exe

description pid process target process

PID 1936 set thread context of 1376 1936 EUROCargoFO0005962320.exe EUROCargoFO0005962320.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

920 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

EUROCargoFO0005962320.exeEUROCargoFO0005962320.exe

pid process

1936 EUROCargoFO0005962320.exe
1376 EUROCargoFO0005962320.exe
1376 EUROCargoFO0005962320.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

EUROCargoFO0005962320.exeEUROCargoFO0005962320.exe

description pid process

Token: SeDebugPrivilege 1936 EUROCargoFO0005962320.exe
Token: SeDebugPrivilege 1376 EUROCargoFO0005962320.exe

description	pid	process	target process
PID 1936 set thread context of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe

pid	process
920	schtasks.exe

pid	process
1936	EUROCargoFO0005962320.exe
1376	EUROCargoFO0005962320.exe
1376	EUROCargoFO0005962320.exe

description	pid	process
Token: SeDebugPrivilege	1936	EUROCargoFO0005962320.exe
Token: SeDebugPrivilege	1376	EUROCargoFO0005962320.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

EUROCargoFO0005962320.exeEUROCargoFO0005962320.exe

description	pid	process	target process
PID 1936 wrote to memory of 920	1936	EUROCargoFO0005962320.exe	schtasks.exe
PID 1936 wrote to memory of 920	1936	EUROCargoFO0005962320.exe	schtasks.exe
PID 1936 wrote to memory of 920	1936	EUROCargoFO0005962320.exe	schtasks.exe
PID 1936 wrote to memory of 920	1936	EUROCargoFO0005962320.exe	schtasks.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1936 wrote to memory of 1376	1936	EUROCargoFO0005962320.exe	EUROCargoFO0005962320.exe
PID 1376 wrote to memory of 696	1376	EUROCargoFO0005962320.exe	netsh.exe
PID 1376 wrote to memory of 696	1376	EUROCargoFO0005962320.exe	netsh.exe
PID 1376 wrote to memory of 696	1376	EUROCargoFO0005962320.exe	netsh.exe
PID 1376 wrote to memory of 696	1376	EUROCargoFO0005962320.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

EUROCargoFO0005962320.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	EUROCargoFO0005962320.exe

outlook_win_path 1 IoCs

Processes:

EUROCargoFO0005962320.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	EUROCargoFO0005962320.exe

C:\Users\Admin\AppData\Local\Temp\EUROCargoFO0005962320.exe
"C:\Users\Admin\AppData\Local\Temp\EUROCargoFO0005962320.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VARQudNEPH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5A03.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:920
- C:\Users\Admin\AppData\Local\Temp\EUROCargoFO0005962320.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:1376
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5A03.tmp

Filesize
1KB

MD5
1e86dfe54008d06faf86e3a526a3180c

SHA1
a6bf8466392d459967bf5787870ed72047120d53

SHA256
94faecb4f495e1693feb9bba98ddf0447f1992036e22c61592f03629fc0df07d

SHA512
57d9b4aac304ed150756e30dd37ef12083ee3f6d51a8254fa1764f2f3628946a3957738e087bcdb68f45453e807582d17d1b96bad0ee4ec1babc77dbce8c8ba4

Download Submit
memory/696-72-0x0000000000000000-mapping.dmp

Download
memory/920-58-0x0000000000000000-mapping.dmp

Download
memory/1376-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-66-0x000000000044C8DE-mapping.dmp

Download
memory/1376-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1376-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1936-57-0x0000000004E10000-0x0000000004E68000-memory.dmp

Filesize
352KB

Download
memory/1936-56-0x00000000004E0000-0x00000000004E8000-memory.dmp

Filesize
32KB

Download
memory/1936-54-0x0000000000E00000-0x0000000000E70000-memory.dmp

Filesize
448KB

Download
memory/1936-55-0x0000000074DD1000-0x0000000074DD3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads