agenttesla | ef3bf4dc8089dc4a53a7f3c01a0ff834d4a8ad8a66ddd19282e242c1855a2a76

General

Target

OJZVQGRB.exe
Size

457KB
MD5

9176cc3a2b72f6ddc6ca7ca9f0408c8b
SHA1

5db086b22bb97d2e373f31b791ff0930bd82cb69
SHA256

a6584d03c245b4cebded9264308da12b97193ad6ae195636d9f447b6c4ce7698
SHA512

d4dae7fe898e4f7883153ee25cd1c3dc1bb57fbe04f1536d9c49169ccef119ad6865498c8c0737ccc2fee67690c53f452622d1bf95d8fdef3e5f5b22f3c82815

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.samudrapanel.com
Port:
587
Username:
[email protected]
Password:
weslali234

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/520-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/520-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/520-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/520-66-0x000000000044A9DE-mapping.dmp	family_agenttesla
behavioral1/memory/520-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/520-70-0x0000000000400000-0x0000000000450000-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/1156-57-0x0000000005030000-0x0000000005086000-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:

OJZVQGRB.exe

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

OJZVQGRB.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	OJZVQGRB.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	OJZVQGRB.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	OJZVQGRB.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:

OJZVQGRB.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

OJZVQGRB.exe

description pid process target process

PID 1156 set thread context of 520 1156 OJZVQGRB.exe OJZVQGRB.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

1460 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

OJZVQGRB.exeOJZVQGRB.exe

pid process

1156 OJZVQGRB.exe
1156 OJZVQGRB.exe
1156 OJZVQGRB.exe
520 OJZVQGRB.exe
520 OJZVQGRB.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OJZVQGRB.exeOJZVQGRB.exe

description pid process

Token: SeDebugPrivilege 1156 OJZVQGRB.exe
Token: SeDebugPrivilege 520 OJZVQGRB.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

OJZVQGRB.exe

pid process

520 OJZVQGRB.exe

description	pid	process	target process
PID 1156 set thread context of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe

pid	process
1460	schtasks.exe

pid	process
1156	OJZVQGRB.exe
1156	OJZVQGRB.exe
1156	OJZVQGRB.exe
520	OJZVQGRB.exe
520	OJZVQGRB.exe

description	pid	process
Token: SeDebugPrivilege	1156	OJZVQGRB.exe
Token: SeDebugPrivilege	520	OJZVQGRB.exe

pid	process
520	OJZVQGRB.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

OJZVQGRB.exeOJZVQGRB.exe

description	pid	process	target process
PID 1156 wrote to memory of 1460	1156	OJZVQGRB.exe	schtasks.exe
PID 1156 wrote to memory of 1460	1156	OJZVQGRB.exe	schtasks.exe
PID 1156 wrote to memory of 1460	1156	OJZVQGRB.exe	schtasks.exe
PID 1156 wrote to memory of 1460	1156	OJZVQGRB.exe	schtasks.exe
PID 1156 wrote to memory of 1004	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 1004	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 1004	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 1004	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 1156 wrote to memory of 520	1156	OJZVQGRB.exe	OJZVQGRB.exe
PID 520 wrote to memory of 1216	520	OJZVQGRB.exe	netsh.exe
PID 520 wrote to memory of 1216	520	OJZVQGRB.exe	netsh.exe
PID 520 wrote to memory of 1216	520	OJZVQGRB.exe	netsh.exe
PID 520 wrote to memory of 1216	520	OJZVQGRB.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

OJZVQGRB.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	OJZVQGRB.exe

outlook_win_path 1 IoCs

Processes:

OJZVQGRB.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	OJZVQGRB.exe

C:\Users\Admin\AppData\Local\Temp\OJZVQGRB.exe
"C:\Users\Admin\AppData\Local\Temp\OJZVQGRB.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:1156

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hXfilQolLOYnI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2C4F.tmp"
2⤵
- Creates scheduled task(s)
PID:1460

C:\Users\Admin\AppData\Local\Temp\OJZVQGRB.exe
"{path}"
2⤵
PID:1004

C:\Users\Admin\AppData\Local\Temp\OJZVQGRB.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:520

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1216

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

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2C4F.tmp
Filesize
1KB

MD5
23ef9c3328c3783efc8dd406c9e5de8c

SHA1
20e32dc22280a681de1469adc5e7c6e9a4f5839e

SHA256
71c674c17a6b91ce2aa431c3e8847ea9f7dbcd04da8ed67a6493be99d1e9acf8

SHA512
7b08f556fc87c49fe96c75589dd3f840afe52cc83a4dec479384268266a49f8d05855dfa83de5c6a67c75b90034e925191164146e254ec522846c0f0981babdc

Download Submit
memory/520-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-66-0x000000000044A9DE-mapping.dmp

Download
memory/520-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/520-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1156-54-0x0000000000EE0000-0x0000000000F58000-memory.dmp

Filesize
480KB

Download
memory/1156-55-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1156-56-0x00000000004C0000-0x00000000004C8000-memory.dmp

Filesize
32KB

Download
memory/1156-57-0x0000000005030000-0x0000000005086000-memory.dmp

Filesize
344KB

Download
memory/1216-72-0x0000000000000000-mapping.dmp

Download
memory/1460-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads