agenttesla | 14a8dc48a92695ede4638dbfd725d594da0a0483862311e0249b3c88a69b8b81

General

Target

DHL_express_package.exe
Size

591KB
MD5

16c3bb1063950e08cad8d54aafa5dac1
SHA1

e9a9db62e38b2c241ec73cdeb8cb77c17e0188f1
SHA256

c8e57eaa8b0fcdfa8cd3db86591975ed151c5e1751997a94fb0d9dddf62aecba
SHA512

ba2c09252a9d01344256284bae7f01160ad9993845ea0c338113969ff7b3666a76488830d8cafaaa0cb991e8b478bb13c07936dae8c0d308e2969df62a517b2e

Score

10^/10

agenttesla collection keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.zoho.com
Port:
587
Username:
johnwebb01@zohomail.com
Password:
UY$W4+]^+9;)7CF5

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/1368-64-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1368-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1368-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1368-67-0x0000000000447C3E-mapping.dmp	family_agenttesla
behavioral1/memory/1368-69-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1368-71-0x0000000000400000-0x000000000044C000-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/1360-58-0x0000000004310000-0x0000000004364000-memory.dmp	rezer0

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:

DHL_express_package.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_express_package.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_express_package.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_express_package.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

DHL_express_package.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	DHL_express_package.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DHL_express_package.exe

description pid process target process

PID 1360 set thread context of 1368 1360 DHL_express_package.exe DHL_express_package.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

1628 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DHL_express_package.exeDHL_express_package.exe

pid process

1360 DHL_express_package.exe
1360 DHL_express_package.exe
1368 DHL_express_package.exe
1368 DHL_express_package.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

DHL_express_package.exe

pid process

1368 DHL_express_package.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DHL_express_package.exeDHL_express_package.exe

description pid process

Token: SeDebugPrivilege 1360 DHL_express_package.exe
Token: SeDebugPrivilege 1368 DHL_express_package.exe

description	pid	process	target process
PID 1360 set thread context of 1368	1360	DHL_express_package.exe	DHL_express_package.exe

pid	process
1628	schtasks.exe

pid	process
1360	DHL_express_package.exe
1360	DHL_express_package.exe
1368	DHL_express_package.exe
1368	DHL_express_package.exe

pid	process
1368	DHL_express_package.exe

description	pid	process
Token: SeDebugPrivilege	1360	DHL_express_package.exe
Token: SeDebugPrivilege	1368	DHL_express_package.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

DHL_express_package.exe

description	pid	process	target process
PID 1360 wrote to memory of 1628	1360	DHL_express_package.exe	schtasks.exe
PID 1360 wrote to memory of 1628	1360	DHL_express_package.exe	schtasks.exe
PID 1360 wrote to memory of 1628	1360	DHL_express_package.exe	schtasks.exe
PID 1360 wrote to memory of 1628	1360	DHL_express_package.exe	schtasks.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe
PID 1360 wrote to memory of 1368	1360	DHL_express_package.exe	DHL_express_package.exe

outlook_office_path 1 IoCs

Processes:

DHL_express_package.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_express_package.exe

outlook_win_path 1 IoCs

Processes:

DHL_express_package.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_express_package.exe

C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ihfdEeRPG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF1A0.tmp"
2⤵
- Creates scheduled task(s)
PID:1628

C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1368

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF1A0.tmp
Filesize
1KB

MD5
78d4f1ef7157047cc051f4cf743a6952

SHA1
596da0fcc342f952ab19a57c77aa2c6452c92bfd

SHA256
3232472d4ca8830c402d3e3435b9f40701ea077d39c8cf14cec75d93455fca0e

SHA512
f3f6f635af9d825b4abecfefdcc1ad222385cfa3f0302cb7e3d18814e47200b37fe78409d8087747fc20b1f65aba014c62fe705a9b10b15b8eda49a325c7c7b8

Download Submit
memory/1360-57-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

Download
memory/1360-55-0x0000000000950000-0x00000000009AE000-memory.dmp

Filesize
376KB

Download
memory/1360-54-0x0000000000A20000-0x0000000000ABA000-memory.dmp

Filesize
616KB

Download
memory/1360-58-0x0000000004310000-0x0000000004364000-memory.dmp

Filesize
336KB

Download
memory/1360-56-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download
memory/1368-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-64-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-67-0x0000000000447C3E-mapping.dmp

Download
memory/1368-69-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1368-71-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1628-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads