agenttesla | 8c8ff96bd74a2c98b5e54cb467e01ba161c174e22a64da7a1301305c926fe463

General

Target

TT.exe
Size

392KB
MD5

12c6c1f0e5fb3368ab6554107edd565a
SHA1

73c727ccc4a8fc0309f42a1aa85a63ad33298577
SHA256

229e18e155787dc908a3a479c9c07b06fa40a17cc56a80bae93d7a2694ff8af7
SHA512

1c0c02234507af9607e1772f996bbe57d818c1d5a2a402b6bb1e9a60825b7c4382a88d00d3ba330ec667e3077d82fe9031bc63fe3078a03e21f9f13b44b73347

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.qualitypulse.sg
Port:
587
Username:
[email protected]
Password:
10EWR0203486364

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/1360-62-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1360-63-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1360-64-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1360-65-0x0000000000445FEE-mapping.dmp	family_agenttesla
behavioral1/memory/1360-68-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1360-70-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla

Executes dropped EXE 1 IoCs

Processes:

RegAsm.exe

pid process

1360 RegAsm.exe
Loads dropped DLL 2 IoCs

Processes:

TT.exeRegAsm.exe

pid process

912 TT.exe
1360 RegAsm.exe
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

pid	process
1360	RegAsm.exe

pid	process
912	TT.exe
1360	RegAsm.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegAsm.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

TT.exe

description pid process target process

PID 912 set thread context of 1360 912 TT.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

TT.exeRegAsm.exe

pid process

912 TT.exe
912 TT.exe
912 TT.exe
1360 RegAsm.exe
1360 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TT.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 912 TT.exe
Token: SeDebugPrivilege 1360 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1360 RegAsm.exe

description	pid	process	target process
PID 912 set thread context of 1360	912	TT.exe	RegAsm.exe

pid	process
912	TT.exe
912	TT.exe
912	TT.exe
1360	RegAsm.exe
1360	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	912	TT.exe
Token: SeDebugPrivilege	1360	RegAsm.exe

pid	process
1360	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

TT.exe

description	pid	process	target process
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe
PID 912 wrote to memory of 1360	912	TT.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.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	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.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	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\TT.exe
"C:\Users\Admin\AppData\Local\Temp\TT.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:912

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
memory/912-54-0x0000000000030000-0x0000000000098000-memory.dmp

Filesize
416KB

Download
memory/912-55-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/912-56-0x0000000000470000-0x000000000047A000-memory.dmp

Filesize
40KB

Download
memory/912-57-0x0000000000540000-0x000000000054A000-memory.dmp

Filesize
40KB

Download
memory/1360-63-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-64-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-65-0x0000000000445FEE-mapping.dmp

Download
memory/1360-62-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-68-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-70-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-60-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1360-59-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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