agenttesla | 4e7718c246accd9b6ef74fc052a59a429db00761f87d1d62d6fe422643b48023

Analysis

max time kernel
118s
max time network
133s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 16:51

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General

Target

6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe
Size

554KB
MD5

6f2f5086cf3684fd4058c8346b9bc014
SHA1

55bb5f38ad70f305524fbcb02db196b810f905e8
SHA256

4e7718c246accd9b6ef74fc052a59a429db00761f87d1d62d6fe422643b48023
SHA512

8c89acbaa4debbcf8dd95effea7be38934f0c561261306b6942a2f42cc5e10d8fe19b3df740d6915f74b641ed386e7a41d26fda2cbcbe1ae36bcf42c15224fd5
SSDEEP

12288:AW66kqD2wGOWbDud8t9hmKi1dTTgIMUE:AW62D2w1Wv409hmv1dTThMUE

Score

10^/10

agenttesla agilenet collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/1284-2-0x0000000000490000-0x00000000004BC000-memory.dmp	agile_net

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyOtApp = "C:\\Users\\Admin\\AppData\\Roaming\\MyOtApp\\MyOtApp.exe"	RegAsm.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe

description pid process target process

PID 1284 set thread context of 2852 1284 6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

2852 RegAsm.exe
2852 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1284 6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe
Token: SeDebugPrivilege 2852 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

2852 RegAsm.exe

flow	ioc
4	checkip.dyndns.org

description	pid	process	target process
PID 1284 set thread context of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe

pid	process
2852	RegAsm.exe
2852	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe
Token: SeDebugPrivilege	2852	RegAsm.exe

pid	process
2852	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe

description	pid	process	target process
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe
PID 1284 wrote to memory of 2852	1284	6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6f2f5086cf3684fd4058c8346b9bc014_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1284

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2852

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/1284-6-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/1284-13-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/1284-2-0x0000000000490000-0x00000000004BC000-memory.dmp

Filesize
176KB

Download
memory/1284-3-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/1284-4-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/1284-5-0x0000000073DEE000-0x0000000073DEF000-memory.dmp

Filesize
4KB

Download
memory/1284-1-0x0000000000140000-0x00000000001D0000-memory.dmp

Filesize
576KB

Download
memory/1284-7-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/1284-0-0x0000000073DEE000-0x0000000073DEF000-memory.dmp

Filesize
4KB

Download
memory/2852-8-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2852-10-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2852-12-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2852-16-0x00000000009A0000-0x00000000009AA000-memory.dmp

Filesize
40KB

Download
memory/2852-17-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-18-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Filesize
6.9MB

Download