agenttesla | 4976d7941500393fd1c39d01900d11cf9a787c3158966867096d1cfc3ae0c6cd

General

Target

cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe
Size

592KB
MD5

cdc6d2fda7f51c7b9e7911f52fdad413
SHA1

f24536404b038157254ac89e9972851cb0a44e8d
SHA256

4976d7941500393fd1c39d01900d11cf9a787c3158966867096d1cfc3ae0c6cd
SHA512

e68c01abc33fe688e2ce0b54cc06c0caa3e566bcb456e3a997ebbf146a44f169e9e879aad3f71bfb4dc395e9ddc452ea9b54e9845df312e8ad4e196b32c7b76c
SSDEEP

12288:R9BviDQsHbMqmmJRgiAP83MbzyBA8oNLki2ey9XrU03rNN6:Rfw/Hb2mQ9MmgCLd87U0

Score

10^/10

agenttesla agilenet collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 3 IoCs

resource	yara_rule
behavioral1/memory/2972-13-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/2972-11-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/2972-7-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe

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

resource	yara_rule
behavioral1/memory/2752-2-0x0000000004AD0000-0x0000000004B3E000-memory.dmp	agile_net

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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 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	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2972	RegAsm.exe
2972	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2972	2752	cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2752-8-0x0000000074330000-0x0000000074A1E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-1-0x0000000000840000-0x00000000008DA000-memory.dmp

Filesize
616KB

Download
memory/2752-2-0x0000000004AD0000-0x0000000004B3E000-memory.dmp

Filesize
440KB

Download
memory/2752-3-0x0000000074330000-0x0000000074A1E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-4-0x0000000002380000-0x00000000023D8000-memory.dmp

Filesize
352KB

Download
memory/2752-6-0x0000000074330000-0x0000000074A1E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-9-0x0000000074330000-0x0000000074A1E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-0-0x000000007433E000-0x000000007433F000-memory.dmp

Filesize
4KB

Download
memory/2972-13-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2972-11-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2972-7-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2972-14-0x00000000713D2000-0x00000000713D4000-memory.dmp

Filesize
8KB

Download
memory/2972-15-0x00000000713D2000-0x00000000713D4000-memory.dmp

Filesize
8KB

Download

Analysis

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