agenttesla | 5f5f6565e2b737b5534cea0f1ea574a732adcd2ac6c1ee675523871c2bcaf461

General

Target

DOC-Scan00567_pdf.exe
Size

412KB
MD5

476f0f9309965ce0f31ce6ee146f6ad3
SHA1

7cc7994a4b4117616c6a3952257d8dc6ea622917
SHA256

15154cbc9862afbec2f10963d73522701380e919fff8250e455553871fba1b7e
SHA512

ed8839bb67ef575553206cc847a4b59019d8834562a9bb5d9dccec8958ab20c96f002b077bff87ac5cb640950ab1242ef78b9baf7aef2f8f15c8e6bd1a227938

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cosmosgroup.in
Port:
587
Username:
[email protected]
Password:
santosh_cosmos

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/1808-56-0x0000000000530000-0x0000000000538000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2028-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2028-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2028-66-0x000000000044B01E-mapping.dmp	family_agenttesla
behavioral1/memory/2028-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2028-70-0x0000000000400000-0x0000000000450000-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/1808-57-0x00000000009E0000-0x0000000000A38000-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:

DOC-Scan00567_pdf.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	DOC-Scan00567_pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	DOC-Scan00567_pdf.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:

DOC-Scan00567_pdf.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	DOC-Scan00567_pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC-Scan00567_pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC-Scan00567_pdf.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:

DOC-Scan00567_pdf.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	DOC-Scan00567_pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	DOC-Scan00567_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DOC-Scan00567_pdf.exe

description pid process target process

PID 1808 set thread context of 2028 1808 DOC-Scan00567_pdf.exe DOC-Scan00567_pdf.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

1716 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

DOC-Scan00567_pdf.exeDOC-Scan00567_pdf.exe

pid process

1808 DOC-Scan00567_pdf.exe
1808 DOC-Scan00567_pdf.exe
1808 DOC-Scan00567_pdf.exe
2028 DOC-Scan00567_pdf.exe
2028 DOC-Scan00567_pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOC-Scan00567_pdf.exeDOC-Scan00567_pdf.exe

description pid process

Token: SeDebugPrivilege 1808 DOC-Scan00567_pdf.exe
Token: SeDebugPrivilege 2028 DOC-Scan00567_pdf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

DOC-Scan00567_pdf.exe

pid process

2028 DOC-Scan00567_pdf.exe

description	pid	process	target process
PID 1808 set thread context of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe

pid	process
1716	schtasks.exe

pid	process
1808	DOC-Scan00567_pdf.exe
1808	DOC-Scan00567_pdf.exe
1808	DOC-Scan00567_pdf.exe
2028	DOC-Scan00567_pdf.exe
2028	DOC-Scan00567_pdf.exe

description	pid	process
Token: SeDebugPrivilege	1808	DOC-Scan00567_pdf.exe
Token: SeDebugPrivilege	2028	DOC-Scan00567_pdf.exe

pid	process
2028	DOC-Scan00567_pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

DOC-Scan00567_pdf.exeDOC-Scan00567_pdf.exe

description	pid	process	target process
PID 1808 wrote to memory of 1716	1808	DOC-Scan00567_pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1716	1808	DOC-Scan00567_pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1716	1808	DOC-Scan00567_pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1716	1808	DOC-Scan00567_pdf.exe	schtasks.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 1808 wrote to memory of 2028	1808	DOC-Scan00567_pdf.exe	DOC-Scan00567_pdf.exe
PID 2028 wrote to memory of 1964	2028	DOC-Scan00567_pdf.exe	netsh.exe
PID 2028 wrote to memory of 1964	2028	DOC-Scan00567_pdf.exe	netsh.exe
PID 2028 wrote to memory of 1964	2028	DOC-Scan00567_pdf.exe	netsh.exe
PID 2028 wrote to memory of 1964	2028	DOC-Scan00567_pdf.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

DOC-Scan00567_pdf.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	DOC-Scan00567_pdf.exe

outlook_win_path 1 IoCs

Processes:

DOC-Scan00567_pdf.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	DOC-Scan00567_pdf.exe

C:\Users\Admin\AppData\Local\Temp\DOC-Scan00567_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DOC-Scan00567_pdf.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:1808

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CqCIfTpzlIKkwh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3841.tmp"
2⤵
- Creates scheduled task(s)
PID:1716

C:\Users\Admin\AppData\Local\Temp\DOC-Scan00567_pdf.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:2028

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1964

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\tmp3841.tmp
Filesize
1KB

MD5
37c2f49f1c84cef9c90cb39abb295a74

SHA1
b40763e34ab4e1eee73629653ad975171109124f

SHA256
3e3d817e4cb45b8a8f849574b359a24dd7ed29ac1ced77b93dcf345114afef8f

SHA512
96f72e414654f948c4e41dbb8332aee10faff2ead60e41703acf20e3ecbf982d1596cca1d6704b81bb0c22c327b6cd95e03284099230fe5637655dc5ecf6b44a

Download Submit
memory/1716-58-0x0000000000000000-mapping.dmp

Download
memory/1808-55-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1808-56-0x0000000000530000-0x0000000000538000-memory.dmp

Filesize
32KB

Download
memory/1808-57-0x00000000009E0000-0x0000000000A38000-memory.dmp

Filesize
352KB

Download
memory/1808-54-0x0000000000DB0000-0x0000000000E1E000-memory.dmp

Filesize
440KB

Download
memory/1964-72-0x0000000000000000-mapping.dmp

Download
memory/2028-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-66-0x000000000044B01E-mapping.dmp

Download
memory/2028-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2028-61-0x0000000000400000-0x0000000000450000-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