agenttesla | c07980ab00eadc3038ceb9eb725a77ee6501e670fb3cb96ab58a8007981f8f21

General

Target

PO102002.exe
Size

456KB
MD5

13e21e63f32a1f5997b4e3c6f34a046d
SHA1

0398f303c169d10015f30e746e27b836d00df9e1
SHA256

b7a5fa475f3dffc48dd10e17c0aba7013ba58752baf49fb83e634ca0d16a61ce
SHA512

a246e3d24dc300a800109db2c3f4656e98fa7e2dccdba61efa4c3c52f1e76277c4cbc33e131b28b71bd3b141c7d2c14fa80bbbebf1f54df8da6e2d86c82de9fd

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.durainteriordesign.com
Port:
587
Username:
[email protected]
Password:
successman12

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/1760-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1760-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1760-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1760-65-0x000000000044CF1E-mapping.dmp	family_agenttesla
behavioral1/memory/1760-67-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1760-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1660-56-0x0000000000860000-0x00000000008B8000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

PO102002.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts PO102002.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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	PO102002.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

PO102002.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	PO102002.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO102002.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO102002.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO102002.exe

description pid process target process

PID 1660 set thread context of 1760 1660 PO102002.exe PO102002.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

956 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

636 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PO102002.exePO102002.exe

pid process

1660 PO102002.exe
1760 PO102002.exe
1760 PO102002.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO102002.exePO102002.exe

description pid process

Token: SeDebugPrivilege 1660 PO102002.exe
Token: SeDebugPrivilege 1760 PO102002.exe

description	pid	process	target process
PID 1660 set thread context of 1760	1660	PO102002.exe	PO102002.exe

pid	process
956	schtasks.exe

pid	process
636	REG.exe

pid	process
1660	PO102002.exe
1760	PO102002.exe
1760	PO102002.exe

description	pid	process
Token: SeDebugPrivilege	1660	PO102002.exe
Token: SeDebugPrivilege	1760	PO102002.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

PO102002.exePO102002.exe

description	pid	process	target process
PID 1660 wrote to memory of 956	1660	PO102002.exe	schtasks.exe
PID 1660 wrote to memory of 956	1660	PO102002.exe	schtasks.exe
PID 1660 wrote to memory of 956	1660	PO102002.exe	schtasks.exe
PID 1660 wrote to memory of 956	1660	PO102002.exe	schtasks.exe
PID 1660 wrote to memory of 1144	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1144	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1144	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1144	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1660 wrote to memory of 1760	1660	PO102002.exe	PO102002.exe
PID 1760 wrote to memory of 636	1760	PO102002.exe	REG.exe
PID 1760 wrote to memory of 636	1760	PO102002.exe	REG.exe
PID 1760 wrote to memory of 636	1760	PO102002.exe	REG.exe
PID 1760 wrote to memory of 636	1760	PO102002.exe	REG.exe
PID 1760 wrote to memory of 1912	1760	PO102002.exe	netsh.exe
PID 1760 wrote to memory of 1912	1760	PO102002.exe	netsh.exe
PID 1760 wrote to memory of 1912	1760	PO102002.exe	netsh.exe
PID 1760 wrote to memory of 1912	1760	PO102002.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

PO102002.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	PO102002.exe

outlook_win_path 1 IoCs

Processes:

PO102002.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	PO102002.exe

C:\Users\Admin\AppData\Local\Temp\PO102002.exe
"C:\Users\Admin\AppData\Local\Temp\PO102002.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CwBRstoWcpAg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8F93.tmp"
2⤵
- Creates scheduled task(s)
PID:956

C:\Users\Admin\AppData\Local\Temp\PO102002.exe
"{path}"
2⤵
PID:1144

C:\Users\Admin\AppData\Local\Temp\PO102002.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1760

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:636

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1912

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

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

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\tmp8F93.tmp
Filesize
1KB

MD5
1a626c83df0a4c39a15728424a8835da

SHA1
b5257e46a669866c179283137b973b25998c9c66

SHA256
e4bbcb56255e56e1d5d391ed0125939322131efd07cd984349475fb347ba8ba9

SHA512
fcc3b7bcfc1f28439923c874ca369e0357d8918fafb940faa28bceeaad3d8ac87fb94d1431f84492fa325d8077c6c59acd5673114ec448e8df22b74a594cc35a

Download Submit
memory/636-71-0x0000000000000000-mapping.dmp

Download
memory/956-57-0x0000000000000000-mapping.dmp

Download
memory/1660-54-0x0000000000B50000-0x0000000000BC8000-memory.dmp

Filesize
480KB

Download
memory/1660-55-0x00000000001F0000-0x0000000000202000-memory.dmp

Filesize
72KB

Download
memory/1660-56-0x0000000000860000-0x00000000008B8000-memory.dmp

Filesize
352KB

Download
memory/1760-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-65-0x000000000044CF1E-mapping.dmp

Download
memory/1760-67-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1760-70-0x0000000076781000-0x0000000076783000-memory.dmp

Filesize
8KB

Download
memory/1760-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1912-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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