agenttesla | a98a9ee375a2143051dd55e2b3b891f088f20763b7f446b506f52178b28ed94a

General

Target

P-O 632020.exe
Size

732KB
MD5

822be5b478bb8f850e41e9ff861ba07d
SHA1

78c496a00fc572a106d933474415b41b67daf982
SHA256

d149b8b19b0a2841e483fb8e2671390b2073bba721dad0f24eeb0fbc23f4c954
SHA512

c5b8d87fc542ebe97ea1e29a42cd1b0c4d953016e578e384cbe707d0936226cc4842cbd736a06c85ec602fd4664d4c5b2d73baef7830bfd0d88247463c37acf7

Score

10^/10

agenttesla collection evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.kanzen.com.my
Port:
587
Username:
[email protected]
Password:
YELee@1919

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/840-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/840-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/840-66-0x000000000044AC6E-mapping.dmp	family_agenttesla
behavioral1/memory/840-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/840-70-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/840-68-0x0000000000400000-0x0000000000450000-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/452-57-0x0000000004D60000-0x0000000004DB6000-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:

P-O 632020.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	P-O 632020.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	P-O 632020.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:

P-O 632020.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P-O 632020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P-O 632020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P-O 632020.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

P-O 632020.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\Javar Update = "C:\\Users\\Admin\\AppData\\Roaming\\Javar Update\\Javar Update.exe"	P-O 632020.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:

P-O 632020.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	P-O 632020.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	P-O 632020.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

P-O 632020.exe

description pid process target process

PID 452 set thread context of 840 452 P-O 632020.exe P-O 632020.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

268 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

P-O 632020.exeP-O 632020.exe

pid process

452 P-O 632020.exe
840 P-O 632020.exe
840 P-O 632020.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

P-O 632020.exe

pid process

840 P-O 632020.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

P-O 632020.exeP-O 632020.exe

description pid process

Token: SeDebugPrivilege 452 P-O 632020.exe
Token: SeDebugPrivilege 840 P-O 632020.exe

description	pid	process	target process
PID 452 set thread context of 840	452	P-O 632020.exe	P-O 632020.exe

pid	process
268	schtasks.exe

pid	process
452	P-O 632020.exe
840	P-O 632020.exe
840	P-O 632020.exe

pid	process
840	P-O 632020.exe

description	pid	process
Token: SeDebugPrivilege	452	P-O 632020.exe
Token: SeDebugPrivilege	840	P-O 632020.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

P-O 632020.exeP-O 632020.exe

description	pid	process	target process
PID 452 wrote to memory of 268	452	P-O 632020.exe	schtasks.exe
PID 452 wrote to memory of 268	452	P-O 632020.exe	schtasks.exe
PID 452 wrote to memory of 268	452	P-O 632020.exe	schtasks.exe
PID 452 wrote to memory of 268	452	P-O 632020.exe	schtasks.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 452 wrote to memory of 840	452	P-O 632020.exe	P-O 632020.exe
PID 840 wrote to memory of 1968	840	P-O 632020.exe	netsh.exe
PID 840 wrote to memory of 1968	840	P-O 632020.exe	netsh.exe
PID 840 wrote to memory of 1968	840	P-O 632020.exe	netsh.exe
PID 840 wrote to memory of 1968	840	P-O 632020.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

P-O 632020.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	P-O 632020.exe

outlook_win_path 1 IoCs

Processes:

P-O 632020.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	P-O 632020.exe

C:\Users\Admin\AppData\Local\Temp\P-O 632020.exe
"C:\Users\Admin\AppData\Local\Temp\P-O 632020.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:452

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EIlRShYPncgoT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB72.tmp"
2⤵
- Creates scheduled task(s)
PID:268

C:\Users\Admin\AppData\Local\Temp\P-O 632020.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:840

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1968

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

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

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\tmpDB72.tmp
Filesize
1KB

MD5
0f2f16ad473ea7e2bb43d08a1440bb1a

SHA1
f28d3c380d5f1598842b6875d09a97485f07efeb

SHA256
80e2948221ec7f2604a1a7207b0c4a77e3c6b7319d67482bee892cc4f52fd602

SHA512
c97de538501ac2e918a555914d1d351f888e3e56a30ea3fec363f56a5b2bc6353ae29fc1d13074953eb5084c9970c446ed65898b47e2d36e65d69b66cb9b6695

Download Submit
memory/268-58-0x0000000000000000-mapping.dmp

Download
memory/452-54-0x0000000000C60000-0x0000000000D1E000-memory.dmp

Filesize
760KB

Download
memory/452-55-0x0000000075381000-0x0000000075383000-memory.dmp

Filesize
8KB

Download
memory/452-56-0x00000000005E0000-0x00000000005E8000-memory.dmp

Filesize
32KB

Download
memory/452-57-0x0000000004D60000-0x0000000004DB6000-memory.dmp

Filesize
344KB

Download
memory/840-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-66-0x000000000044AC6E-mapping.dmp

Download
memory/840-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/840-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1968-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads