agenttesla | a98a9ee375a2143051dd55e2b3b891f088f20763b7f446b506f52178b28ed94a

Analysis

max time kernel
152s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:22

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General

Target

P-O 632020.exe
Size

732KB
MD5

822be5b478bb8f850e41e9ff861ba07d
SHA1

78c496a00fc572a106d933474415b41b67daf982
SHA256

d149b8b19b0a2841e483fb8e2671390b2073bba721dad0f24eeb0fbc23f4c954
SHA512

c5b8d87fc542ebe97ea1e29a42cd1b0c4d953016e578e384cbe707d0936226cc4842cbd736a06c85ec602fd4664d4c5b2d73baef7830bfd0d88247463c37acf7

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Credentials

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

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
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4216-139-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
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\VideoBiosVersion	P-O 632020.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	P-O 632020.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

P-O 632020.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	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-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P-O 632020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P-O 632020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-1081944012-3634099177-1681222835-1000\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 4176 set thread context of 4216 4176 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

868 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

P-O 632020.exe

pid process

4216 P-O 632020.exe
4216 P-O 632020.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

P-O 632020.exe

pid process

4216 P-O 632020.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

P-O 632020.exe

description pid process

Token: SeDebugPrivilege 4216 P-O 632020.exe

description	pid	process	target process
PID 4176 set thread context of 4216	4176	P-O 632020.exe	P-O 632020.exe

pid	process
868	schtasks.exe

pid	process
4216	P-O 632020.exe
4216	P-O 632020.exe

pid	process
4216	P-O 632020.exe

description	pid	process
Token: SeDebugPrivilege	4216	P-O 632020.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

P-O 632020.exeP-O 632020.exe

description	pid	process	target process
PID 4176 wrote to memory of 868	4176	P-O 632020.exe	schtasks.exe
PID 4176 wrote to memory of 868	4176	P-O 632020.exe	schtasks.exe
PID 4176 wrote to memory of 868	4176	P-O 632020.exe	schtasks.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4176 wrote to memory of 4216	4176	P-O 632020.exe	P-O 632020.exe
PID 4216 wrote to memory of 1812	4216	P-O 632020.exe	netsh.exe
PID 4216 wrote to memory of 1812	4216	P-O 632020.exe	netsh.exe
PID 4216 wrote to memory of 1812	4216	P-O 632020.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

P-O 632020.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\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
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4176

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EIlRShYPncgoT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp886A.tmp"
2⤵
- Creates scheduled task(s)
PID:868

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:4216

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\P-O 632020.exe.log
Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp886A.tmp
Filesize
1KB

MD5
7bf88c01a9cd393b95ce7b12af6c1565

SHA1
3d688c2b68ec5048efa0957fd271578d3ccf8364

SHA256
a82c75f1277a4b9b06bf25f6f9f9200d7883b76880b89eeb7a02993d5eb79c52

SHA512
33a77dfbadce189c56a94fd465bdade85568f19fbf57ba64423bebbbab7ef6c46800ebd5fffa138e5241e3fa2d95719b407ea9454f10339a25bc6fd31eba350c

Download Submit
memory/868-136-0x0000000000000000-mapping.dmp

Download
memory/1812-141-0x0000000000000000-mapping.dmp

Download
memory/4176-133-0x0000000005510000-0x000000000551A000-memory.dmp

Filesize
40KB

Download
memory/4176-135-0x0000000009680000-0x00000000096E6000-memory.dmp

Filesize
408KB

Download
memory/4176-134-0x00000000094E0000-0x000000000957C000-memory.dmp

Filesize
624KB

Download
memory/4176-130-0x0000000000AA0000-0x0000000000B5E000-memory.dmp

Filesize
760KB

Download
memory/4176-132-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/4176-131-0x0000000005AA0000-0x0000000006044000-memory.dmp

Filesize
5.6MB

Download
memory/4216-138-0x0000000000000000-mapping.dmp

Download
memory/4216-139-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4216-142-0x0000000006D60000-0x0000000006DB0000-memory.dmp

Filesize
320KB

Download