agenttesla | 4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3

General

Target

4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe
Size

1.1MB
MD5

f3ecc3f5d66720700cd7927178efbd16
SHA1

38a8dc60faad60da61b5787d29ece4bcded6f7c7
SHA256

4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3
SHA512

ceee13504567a4082dddce8237a6ac9cf070cda8bbb6bc83e2fa482560c2b29f9663c606144da9bfa3f6364ad208e18ef45bb35c21fb4c6543a66cf95ea4c1bf
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QL0GFUT5Dn5okl79XRmUl9XwiwpGb/Gy:ffmMv6Ckr7Mny5QL0YU1DnlRJ3XQy

Score

10^/10

agenttesla discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.starmech.net
Port:
587
Username:
[email protected]
Password:
nics123
Email To:
[email protected]

Signatures

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

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4712	Monteverdi.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BjTxJte = "C:\\Users\\Admin\\AppData\\Roaming\\BjTxJte\\BjTxJte.exe"	RegSvcs.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	api.ipify.org
17	api.ipify.org

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023c9c-5.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4712 set thread context of 3616	4712	Monteverdi.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1656	4712	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Monteverdi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3616	RegSvcs.exe
3616	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4712	Monteverdi.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3616	RegSvcs.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 4712	3052	4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe	86
PID 3052 wrote to memory of 4712	3052	4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe	86
PID 3052 wrote to memory of 4712	3052	4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe	86
PID 4712 wrote to memory of 3616	4712	Monteverdi.exe	87
PID 4712 wrote to memory of 3616	4712	Monteverdi.exe	87
PID 4712 wrote to memory of 3616	4712	Monteverdi.exe	87
PID 4712 wrote to memory of 3616	4712	Monteverdi.exe	87

C:\Users\Admin\AppData\Local\Temp\4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe
"C:\Users\Admin\AppData\Local\Temp\4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\retrofit\Monteverdi.exe
  "C:\Users\Admin\AppData\Local\Temp\4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4712
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3616
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4712 -s 740
    3⤵
    - Program crash
    PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4712 -ip 4712
1⤵
PID:4960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\retrofit\Monteverdi.exe

Filesize
1.1MB

MD5
f3ecc3f5d66720700cd7927178efbd16

SHA1
38a8dc60faad60da61b5787d29ece4bcded6f7c7

SHA256
4c2de5043cb67a6805824b096a6640ab47b60c0c1ed71a452d3228144c92b0f3

SHA512
ceee13504567a4082dddce8237a6ac9cf070cda8bbb6bc83e2fa482560c2b29f9663c606144da9bfa3f6364ad208e18ef45bb35c21fb4c6543a66cf95ea4c1bf

Download Submit
memory/3052-2-0x0000000003EC0000-0x00000000042C0000-memory.dmp

Filesize
4.0MB

Download
memory/3616-18-0x0000000006640000-0x0000000006690000-memory.dmp

Filesize
320KB

Download
memory/3616-12-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3616-13-0x0000000073E3E000-0x0000000073E3F000-memory.dmp

Filesize
4KB

Download
memory/3616-14-0x0000000005900000-0x0000000005EA4000-memory.dmp

Filesize
5.6MB

Download
memory/3616-15-0x0000000005260000-0x00000000052C6000-memory.dmp

Filesize
408KB

Download
memory/3616-16-0x0000000073E30000-0x00000000745E0000-memory.dmp

Filesize
7.7MB

Download
memory/3616-19-0x0000000006730000-0x00000000067C2000-memory.dmp

Filesize
584KB

Download
memory/3616-20-0x00000000068E0000-0x00000000068EA000-memory.dmp

Filesize
40KB

Download
memory/3616-21-0x0000000073E3E000-0x0000000073E3F000-memory.dmp

Filesize
4KB

Download
memory/3616-22-0x0000000073E30000-0x00000000745E0000-memory.dmp

Filesize
7.7MB

Download
memory/4712-10-0x0000000003C50000-0x0000000003E50000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads