agenttesla | cb29def3c7c961ecae3bb6cda5aebc5210828401fc97a4f9b61711a0d1c2ae2c

General

Target

OrderExport_URB202061165400.exe
Size

663KB
MD5

0eb06e938875e8bb4bfe14a94c6712df
SHA1

23a8e2badc0403aec721990c066771e20e1a5904
SHA256

cb29def3c7c961ecae3bb6cda5aebc5210828401fc97a4f9b61711a0d1c2ae2c
SHA512

9959db6860a6ff0f67301df994e411d4d3b3345ecaf36f4bf5cdccb8fbcfb44a86bcf6a2a80709746a27b414811c60b304b4ea745b55313cc1e797e49acc7d81

Score

10^/10

agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.sesan.com.vn
Port:
587
Username:
info@sesan.com.vn
Password:
123456

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/752-160-0x0000000000540000-0x0000000000542000-memory.dmp	coreentity

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1836-164-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-165-0x000000000044CBDE-mapping.dmp	family_agenttesla
behavioral1/memory/1836-166-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-167-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/752-161-0x0000000004940000-0x0000000004993000-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:

OrderExport_URB202061165400.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	OrderExport_URB202061165400.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	OrderExport_URB202061165400.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081

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:

OrderExport_URB202061165400.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	OrderExport_URB202061165400.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	OrderExport_URB202061165400.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

OrderExport_URB202061165400.exe

description pid process target process

PID 752 set thread context of 1836 752 OrderExport_URB202061165400.exe OrderExport_URB202061165400.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

1356 schtasks.exe

description	pid	process	target process
PID 752 set thread context of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe

pid	process
1356	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

OrderExport_URB202061165400.exeOrderExport_URB202061165400.exe

pid	process
752	OrderExport_URB202061165400.exe
752	OrderExport_URB202061165400.exe
752	OrderExport_URB202061165400.exe
1836	OrderExport_URB202061165400.exe
1836	OrderExport_URB202061165400.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OrderExport_URB202061165400.exeOrderExport_URB202061165400.exe

description pid process

Token: SeDebugPrivilege 752 OrderExport_URB202061165400.exe
Token: SeDebugPrivilege 1836 OrderExport_URB202061165400.exe

description	pid	process
Token: SeDebugPrivilege	752	OrderExport_URB202061165400.exe
Token: SeDebugPrivilege	1836	OrderExport_URB202061165400.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

OrderExport_URB202061165400.exeOrderExport_URB202061165400.exe

C:\Users\Admin\AppData\Local\Temp\OrderExport_URB202061165400.exe
"C:\Users\Admin\AppData\Local\Temp\OrderExport_URB202061165400.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:752

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ExfvRaGVfqPTbq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3092.tmp"
2⤵
- Creates scheduled task(s)
PID:1356

C:\Users\Admin\AppData\Local\Temp\OrderExport_URB202061165400.exe
"{path}"
2⤵
PID:1812

C:\Users\Admin\AppData\Local\Temp\OrderExport_URB202061165400.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1836

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1728

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3092.tmp
MD5
a2bb3e7cc3afc9a78524ef0e53f0b943

SHA1
92c8060fb6a4bf34f1a460876ddfbfd1f40b3d93

SHA256
dfa16e77334793e50bc79386e390f366ce9d8b19377b3ec61fb2f9caee494d17

SHA512
fa6815dd192557169473872df84a254fa5483810caf1ce41da2e6b8ca8b78fa19572c197477b0f933411066f59bddfaeb4994059588432b4e0df9442c4dd997d

Download Submit
memory/752-161-0x0000000004940000-0x0000000004993000-memory.dmp

Filesize
332KB

Download
memory/752-1-0x00000000009F0000-0x00000000009F1000-memory.dmp

Filesize
4KB

Download
memory/752-4-0x00000000005B0000-0x00000000005C1000-memory.dmp

Filesize
68KB

Download
memory/752-9-0x00000000005B0000-0x00000000005C1000-memory.dmp

Filesize
68KB

Download
memory/752-160-0x0000000000540000-0x0000000000542000-memory.dmp

Filesize
8KB

Download
memory/752-0-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download
memory/752-3-0x0000000002030000-0x00000000020A4000-memory.dmp

Filesize
464KB

Download
memory/1356-162-0x0000000000000000-mapping.dmp

Download
memory/1728-171-0x0000000000000000-mapping.dmp

Download
memory/1836-164-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-165-0x000000000044CBDE-mapping.dmp

Download
memory/1836-166-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-167-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-168-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download

description	pid	process	target process
PID 752 wrote to memory of 1356	752	OrderExport_URB202061165400.exe	schtasks.exe
PID 752 wrote to memory of 1356	752	OrderExport_URB202061165400.exe	schtasks.exe
PID 752 wrote to memory of 1356	752	OrderExport_URB202061165400.exe	schtasks.exe
PID 752 wrote to memory of 1356	752	OrderExport_URB202061165400.exe	schtasks.exe
PID 752 wrote to memory of 1812	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1812	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1812	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1812	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 752 wrote to memory of 1836	752	OrderExport_URB202061165400.exe	OrderExport_URB202061165400.exe
PID 1836 wrote to memory of 1728	1836	OrderExport_URB202061165400.exe	netsh.exe
PID 1836 wrote to memory of 1728	1836	OrderExport_URB202061165400.exe	netsh.exe
PID 1836 wrote to memory of 1728	1836	OrderExport_URB202061165400.exe	netsh.exe
PID 1836 wrote to memory of 1728	1836	OrderExport_URB202061165400.exe	netsh.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads