agenttesla | 24ebd06b07f1c9a22aaa2212d7a883ac692f0581f85ae3ec5617856ddb1d280a

General

Target

SRUYM9J4.exe
Size

475KB
MD5

5fc1b1f7d19c60e9776c53deab129960
SHA1

655038400c51c6e137206f79fb9995b432665f93
SHA256

1fc23a174b140e18c483571695a84360667aa1c719451bba5c73a4ffe4da48d2
SHA512

2090df70e0073b04a93407e6f00ca235425a8d1076c12f7bfb2766e7da103d23600539015f47d7075c995add45accbfc15a18415be4a99e1a43a448e23af8a6d

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1240-56-0x0000000000620000-0x0000000000628000-memory.dmp	coreentity

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1240-60-0x00000000042B0000-0x0000000004302000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1240-57-0x00000000072C0000-0x0000000007318000-memory.dmp	rezer0

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:

SRUYM9J4.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SRUYM9J4.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SRUYM9J4.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SRUYM9J4.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

936 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

SRUYM9J4.exe

pid process

1240 SRUYM9J4.exe
1240 SRUYM9J4.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SRUYM9J4.exe

description pid process

Token: SeDebugPrivilege 1240 SRUYM9J4.exe

pid	process
936	schtasks.exe

pid	process
1240	SRUYM9J4.exe
1240	SRUYM9J4.exe

description	pid	process
Token: SeDebugPrivilege	1240	SRUYM9J4.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

SRUYM9J4.exe

description	pid	process	target process
PID 1240 wrote to memory of 936	1240	SRUYM9J4.exe	schtasks.exe
PID 1240 wrote to memory of 936	1240	SRUYM9J4.exe	schtasks.exe
PID 1240 wrote to memory of 936	1240	SRUYM9J4.exe	schtasks.exe
PID 1240 wrote to memory of 936	1240	SRUYM9J4.exe	schtasks.exe
PID 1240 wrote to memory of 1156	1240	SRUYM9J4.exe	netsh.exe
PID 1240 wrote to memory of 1156	1240	SRUYM9J4.exe	netsh.exe
PID 1240 wrote to memory of 1156	1240	SRUYM9J4.exe	netsh.exe
PID 1240 wrote to memory of 1156	1240	SRUYM9J4.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

SRUYM9J4.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SRUYM9J4.exe

outlook_win_path 1 IoCs

Processes:

SRUYM9J4.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SRUYM9J4.exe

C:\Users\Admin\AppData\Local\Temp\SRUYM9J4.exe
"C:\Users\Admin\AppData\Local\Temp\SRUYM9J4.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1240

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GbfZvLasxAqaty" /XML "C:\Users\Admin\AppData\Local\Temp\tmp866F.tmp"
2⤵
- Creates scheduled task(s)
PID:936

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
2⤵
PID:1156

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

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\tmp866F.tmp
Filesize
1KB

MD5
27b03bfa823d407be5078d151354effd

SHA1
ab8fc2b37eefe03c80496a1a68f9522a4ec53d96

SHA256
de4d7378efd2078536ec662fcaf05bc3ef6ead1282cfecd68f055fdb7ebfc86f

SHA512
4fac878ea8d913412709984674244c35c5175509a47275cc917e4cc547422778d8a0dd6f2725b8e73e0a00fa525c714f235e6c81b64612b3975f33deb29aa712

Download Submit
memory/936-58-0x0000000000000000-mapping.dmp

Download
memory/1156-61-0x0000000000000000-mapping.dmp

Download
memory/1240-54-0x0000000000CF0000-0x0000000000D6E000-memory.dmp

Filesize
504KB

Download
memory/1240-55-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/1240-56-0x0000000000620000-0x0000000000628000-memory.dmp

Filesize
32KB

Download
memory/1240-57-0x00000000072C0000-0x0000000007318000-memory.dmp

Filesize
352KB

Download
memory/1240-60-0x00000000042B0000-0x0000000004302000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads