agenttesla | 639926efa5247a8261f9bae6e371dd5ba1f1f093d89e52bc4ec4beff980b242a

General

Target

_Invoice MV2063576.exe
Size

617KB
MD5

86058f24e4c425412d054749b30f7698
SHA1

0dd03e47457339c79ebfcaff3c4a68633b3a806a
SHA256

016d18a1819dd57ce155f552bc917ae63b3e4f795be54bfff3eede42df23b6ee
SHA512

3a398417aecfa5e65ce0a434a2b929db5803ce255580223a2729859398d2ff093e648f187c74ed01dc1166f9fd5fa81ee15aef872422bec24f9538e1b0019046

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
gatefee22

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/760-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/760-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/760-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/760-66-0x000000000044A07E-mapping.dmp	family_agenttesla
behavioral1/memory/760-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/760-70-0x0000000000400000-0x0000000000450000-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/1552-57-0x00000000060E0000-0x0000000006136000-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:

_Invoice MV2063576.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	_Invoice MV2063576.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	_Invoice MV2063576.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:

_Invoice MV2063576.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	_Invoice MV2063576.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	_Invoice MV2063576.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	_Invoice MV2063576.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:

_Invoice MV2063576.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	_Invoice MV2063576.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	_Invoice MV2063576.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

_Invoice MV2063576.exe

description pid process target process

PID 1552 set thread context of 760 1552 _Invoice MV2063576.exe _Invoice MV2063576.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

2040 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

_Invoice MV2063576.exe_Invoice MV2063576.exe

pid process

1552 _Invoice MV2063576.exe
1552 _Invoice MV2063576.exe
760 _Invoice MV2063576.exe
760 _Invoice MV2063576.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

_Invoice MV2063576.exe_Invoice MV2063576.exe

description pid process

Token: SeDebugPrivilege 1552 _Invoice MV2063576.exe
Token: SeDebugPrivilege 760 _Invoice MV2063576.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

_Invoice MV2063576.exe

pid process

760 _Invoice MV2063576.exe

description	pid	process	target process
PID 1552 set thread context of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe

pid	process
2040	schtasks.exe

pid	process
1552	_Invoice MV2063576.exe
1552	_Invoice MV2063576.exe
760	_Invoice MV2063576.exe
760	_Invoice MV2063576.exe

description	pid	process
Token: SeDebugPrivilege	1552	_Invoice MV2063576.exe
Token: SeDebugPrivilege	760	_Invoice MV2063576.exe

pid	process
760	_Invoice MV2063576.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

_Invoice MV2063576.exe

description	pid	process	target process
PID 1552 wrote to memory of 2040	1552	_Invoice MV2063576.exe	schtasks.exe
PID 1552 wrote to memory of 2040	1552	_Invoice MV2063576.exe	schtasks.exe
PID 1552 wrote to memory of 2040	1552	_Invoice MV2063576.exe	schtasks.exe
PID 1552 wrote to memory of 2040	1552	_Invoice MV2063576.exe	schtasks.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe
PID 1552 wrote to memory of 760	1552	_Invoice MV2063576.exe	_Invoice MV2063576.exe

outlook_office_path 1 IoCs

Processes:

_Invoice MV2063576.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	_Invoice MV2063576.exe

outlook_win_path 1 IoCs

Processes:

_Invoice MV2063576.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	_Invoice MV2063576.exe

C:\Users\Admin\AppData\Local\Temp\_Invoice MV2063576.exe
"C:\Users\Admin\AppData\Local\Temp\_Invoice MV2063576.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:1552

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DSEkplkctkasbj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1E4B.tmp"
2⤵
- Creates scheduled task(s)
PID:2040

C:\Users\Admin\AppData\Local\Temp\_Invoice MV2063576.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:760

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\tmp1E4B.tmp
Filesize
1KB

MD5
10ccd9e955ccfacd8fe7685b5d5a86f6

SHA1
dcabf344c5091476ccf3f2457eb5d285b70b8254

SHA256
86fcad39c749757d810213a4703812a540df5c12d41176160b2889be619d1f24

SHA512
cd5f9ec9a28545f2c84fdfc13b36c59621c187141222a8083b586fcf4ce4c6db872582faed48066e6a9a50cb1dcef3a0e66ae85af3cb6fc3ce7e93ad355396dc

Download Submit
memory/760-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-66-0x000000000044A07E-mapping.dmp

Download
memory/760-71-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/760-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/760-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-54-0x00000000002E0000-0x0000000000384000-memory.dmp

Filesize
656KB

Download
memory/1552-56-0x0000000000670000-0x0000000000678000-memory.dmp

Filesize
32KB

Download
memory/1552-55-0x0000000000510000-0x000000000056E000-memory.dmp

Filesize
376KB

Download
memory/1552-57-0x00000000060E0000-0x0000000006136000-memory.dmp

Filesize
344KB

Download
memory/2040-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads