agenttesla | 7f78b92c25a0a395ae7ed636110e169a99a64604262fb98a55df09d8bdc68ec8

General

Target

4y1k7snP7le2PkK.exe
Size

431KB
MD5

b79c0f74126ea29b1a889182759ca168
SHA1

abcf4f42e922ad538f0f8cca8307505a4ef0a3ac
SHA256

db120792b5ad5e3f9bd864097f9f55c20c3852b680f53056f172fd3319906d13
SHA512

d9215141cf3514aff9e5aef370f69b9eecb2cc08d3192ca45f12918f94fdcea42907104ef39d692db6bf866edca1e6448dbb6956d0b053db7e6ced9ad650933f

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.upgcambodia.com
Port:
587
Username:
[email protected]
Password:
stock3168

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4620-124-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/4620-125-0x000000000043761E-mapping.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

4y1k7snP7le2PkK.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts 4y1k7snP7le2PkK.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	4y1k7snP7le2PkK.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

4y1k7snP7le2PkK.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4y1k7snP7le2PkK.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4y1k7snP7le2PkK.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4y1k7snP7le2PkK.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

4y1k7snP7le2PkK.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	4y1k7snP7le2PkK.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4y1k7snP7le2PkK.exe

description pid process target process

PID 2324 set thread context of 4620 2324 4y1k7snP7le2PkK.exe 4y1k7snP7le2PkK.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

4y1k7snP7le2PkK.exe4y1k7snP7le2PkK.exe

pid process

2324 4y1k7snP7le2PkK.exe
2324 4y1k7snP7le2PkK.exe
2324 4y1k7snP7le2PkK.exe
2324 4y1k7snP7le2PkK.exe
4620 4y1k7snP7le2PkK.exe
4620 4y1k7snP7le2PkK.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4y1k7snP7le2PkK.exe4y1k7snP7le2PkK.exe

description pid process

Token: SeDebugPrivilege 2324 4y1k7snP7le2PkK.exe
Token: SeDebugPrivilege 4620 4y1k7snP7le2PkK.exe

description	pid	process	target process
PID 2324 set thread context of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe

pid	process
2324	4y1k7snP7le2PkK.exe
2324	4y1k7snP7le2PkK.exe
2324	4y1k7snP7le2PkK.exe
2324	4y1k7snP7le2PkK.exe
4620	4y1k7snP7le2PkK.exe
4620	4y1k7snP7le2PkK.exe

description	pid	process
Token: SeDebugPrivilege	2324	4y1k7snP7le2PkK.exe
Token: SeDebugPrivilege	4620	4y1k7snP7le2PkK.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

4y1k7snP7le2PkK.exe

description	pid	process	target process
PID 2324 wrote to memory of 4636	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4636	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4636	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe
PID 2324 wrote to memory of 4620	2324	4y1k7snP7le2PkK.exe	4y1k7snP7le2PkK.exe

outlook_office_path 1 IoCs

Processes:

4y1k7snP7le2PkK.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4y1k7snP7le2PkK.exe

outlook_win_path 1 IoCs

Processes:

4y1k7snP7le2PkK.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4y1k7snP7le2PkK.exe

C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe
"C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324

C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe
"C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe"
2⤵
PID:4636

C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe
"C:\Users\Admin\AppData\Local\Temp\4y1k7snP7le2PkK.exe"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4620

Network

MITRE ATT&CK Matrix ATT&CK 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

3

T1081

Discovery

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\Microsoft\CLR_v4.0_32\UsageLogs\4y1k7snP7le2PkK.exe.log
MD5
0c2899d7c6746f42d5bbe088c777f94c

SHA1
622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

SHA256
5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

SHA512
ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

Download Submit
memory/2324-122-0x00000000087F0000-0x00000000087F1000-memory.dmp

Filesize
4KB

Download
memory/2324-117-0x0000000005440000-0x0000000005441000-memory.dmp

Filesize
4KB

Download
memory/2324-119-0x0000000004F40000-0x000000000543E000-memory.dmp

Filesize
5.0MB

Download
memory/2324-120-0x0000000004D90000-0x0000000004D91000-memory.dmp

Filesize
4KB

Download
memory/2324-121-0x0000000005030000-0x0000000005037000-memory.dmp

Filesize
28KB

Download
memory/2324-115-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/2324-123-0x0000000008990000-0x00000000089E8000-memory.dmp

Filesize
352KB

Download
memory/2324-118-0x0000000004E10000-0x0000000004E11000-memory.dmp

Filesize
4KB

Download
memory/4620-124-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4620-125-0x000000000043761E-mapping.dmp

Download
memory/4620-131-0x0000000005550000-0x0000000005551000-memory.dmp

Filesize
4KB

Download
memory/4620-132-0x00000000056E0000-0x00000000056E1000-memory.dmp

Filesize
4KB

Download
memory/4620-133-0x0000000006260000-0x0000000006261000-memory.dmp

Filesize
4KB

Download
memory/4620-136-0x0000000005551000-0x0000000005552000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads