agenttesla | 1e71e56913f6531c96445bc90b51d49e9a69574236d97b3c36ce99db4f9a9ee7

General

Target

#4WIa5.exe
Size

1.1MB
MD5

8c9cf2d7436c524449d3559a379a9b7d
SHA1

519ff74cb97229a1b1fd7c5515b165cf30472e28
SHA256

1e71e56913f6531c96445bc90b51d49e9a69574236d97b3c36ce99db4f9a9ee7
SHA512

bc6ba9da565af95854e77e1ed10019f29c50f35ba438b0dfa4fc073f9cb1f5e80f6522cce11e8cf25c368e6ffed3173a531d1683d8d87278782ff2f8b8c351ef
SSDEEP

24576:9g7yqlK/1FuZ7zNrQ5DQRQFs0TZ7yw+mD:u7yLDkVrQ5ysTB9JD

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1591373451:AAH6Q2mvjdA9146Wl0khv2-kuh-iTps2zjw/

Signatures

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

#4WIa5.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	#4WIa5.exe
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	#4WIa5.exe
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	#4WIa5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

#4WIa5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yGbzOMp = "C:\\Users\\Admin\\AppData\\Roaming\\yGbzOMp\\yGbzOMp.exe"	#4WIa5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

#4WIa5.exe

description pid process target process

PID 1716 set thread context of 4896 1716 #4WIa5.exe #4WIa5.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

#4WIa5.exe

pid process

4896 #4WIa5.exe
4896 #4WIa5.exe
4896 #4WIa5.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

#4WIa5.exe

description pid process

Token: SeDebugPrivilege 4896 #4WIa5.exe

description	pid	process	target process
PID 1716 set thread context of 4896	1716	#4WIa5.exe	#4WIa5.exe

pid	process
4896	#4WIa5.exe
4896	#4WIa5.exe
4896	#4WIa5.exe

description	pid	process
Token: SeDebugPrivilege	4896	#4WIa5.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

#4WIa5.exe

description	pid	process	target process
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe
PID 1716 wrote to memory of 4896	1716	#4WIa5.exe	#4WIa5.exe

outlook_office_path 1 IoCs

Processes:

#4WIa5.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	#4WIa5.exe

outlook_win_path 1 IoCs

Processes:

#4WIa5.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	#4WIa5.exe

C:\Users\Admin\AppData\Local\Temp\#4WIa5.exe
"C:\Users\Admin\AppData\Local\Temp\#4WIa5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1716

C:\Users\Admin\AppData\Local\Temp\#4WIa5.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4896

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\#4WIa5.exe.log
Filesize
1KB

MD5
84e77a587d94307c0ac1357eb4d3d46f

SHA1
83cc900f9401f43d181207d64c5adba7a85edc1e

SHA256
e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

SHA512
aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

Download Submit
memory/1716-132-0x0000000000660000-0x000000000077E000-memory.dmp

Filesize
1.1MB

Download
memory/1716-133-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/1716-134-0x0000000005130000-0x00000000051C2000-memory.dmp

Filesize
584KB

Download
memory/1716-135-0x00000000052C0000-0x000000000535C000-memory.dmp

Filesize
624KB

Download
memory/1716-136-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/4896-137-0x0000000000000000-mapping.dmp

Download
memory/4896-138-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4896-140-0x0000000005DA0000-0x0000000005E06000-memory.dmp

Filesize
408KB

Download
memory/4896-141-0x0000000001520000-0x0000000001570000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads