agenttesla | c45cbf7de196d50a6eb860e3d8dbfdf8f3699c3e62df58f63bd1c6c176c9ead1

General

Target

Remittance advice.exe
Size

803KB
MD5

be9f6ec429298296531aef4e8813679c
SHA1

f46d168675ed61ded4d5030ad25b5107d5252efd
SHA256

c45cbf7de196d50a6eb860e3d8dbfdf8f3699c3e62df58f63bd1c6c176c9ead1
SHA512

8ee7421a05ac4c8f5b131ce57e2657d1128a8d0332be62ad42eb2850e04de85c9b177075f0dac51f5f308285843d534674f733d91a414bdfb43ecd6612db935a

Score

10^/10

persistence spyware keylogger trojan stealer agenttesla

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.bnb-spa.com
Port:
587
Username:
[email protected]
Password:
hope2020

Signatures

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3932	Remittance advice.exe
3932	Remittance advice.exe
3900	Remittance advice.exe
3900	Remittance advice.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

Data from Local System
T1005

Credentials in Files
T1081

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

resource	yara_rule
behavioral2/memory/3900-1-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/3900-3-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/3900-4-0x0000000000400000-0x00000000004B1000-memory.dmp	upx

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bv.vbs	notepad.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mymp4 = "C:\\Users\\Admin\\AppData\\Roaming\\Mymp4\\Mymp4.exe"	Remittance advice.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 3880	3932	Remittance advice.exe	67
PID 3932 wrote to memory of 3880	3932	Remittance advice.exe	67
PID 3932 wrote to memory of 3880	3932	Remittance advice.exe	67
PID 3932 wrote to memory of 3880	3932	Remittance advice.exe	67
PID 3932 wrote to memory of 3880	3932	Remittance advice.exe	67
PID 3932 wrote to memory of 3900	3932	Remittance advice.exe	68
PID 3932 wrote to memory of 3900	3932	Remittance advice.exe	68
PID 3932 wrote to memory of 3900	3932	Remittance advice.exe	68

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3932	Remittance advice.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3932 set thread context of 3900	3932	Remittance advice.exe	68

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3900	Remittance advice.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe
"C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
PID:3932
- C:\Windows\SysWOW64\notepad.exe
  "C:\Windows\system32\notepad.exe"
  2⤵
  - Drops startup file
  PID:3880
- C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe
  "C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Adds Run entry to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:3900

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

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3900-1-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/3900-3-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/3900-4-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/3900-5-0x00000000021B0000-0x0000000002202000-memory.dmp

Filesize
328KB

Download
memory/3900-6-0x0000000000552000-0x0000000000553000-memory.dmp

Filesize
4KB

Download

Analysis

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