agenttesla | 5fa2d320a9309582f3b8d589a6b776b586bf9247af39c831a86b4d5a3ef0f51f

General

Target

dhl_address_form.exe
Size

700KB
MD5

2609ae8c66f7d758472da101042c3548
SHA1

c787a4d4d919399f7041839d21a620a2d51fd5c4
SHA256

e356d7e8758967daa9f5d129eef727202e2c48d2808355924cf247aebc1bd336
SHA512

0776dbf3a2b0de4e760b12ccd896ebdb25018ec5f8072b3e4c1ec5fbe8a3351ccae5a7c0beaa08feda571dff15c0690b7c132b95b523d6451ce7eb1a5d64d28f
SSDEEP

6144:kE/gzZZ0mSLAkBTsvgYoxBAosUXBQsnJ/vY3ZFbvC2BoaaVAcL7n:k3zZZ0mXWTsoYoxZsUXBQCo3XK3VAcX

Score

10^/10

agenttesla collection defense_evasion discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.petroleumintegrated-ae.com
Port:
587
Username:
[email protected]
Password:
)dZfkI%9

Signatures

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

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	dhl_address_form.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	dhl_address_form.exe

Executes dropped EXE 1 IoCs

pid	Process
2456	InstallUtil.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	dhl_address_form.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 stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 2456	1728	dhl_address_form.exe	31

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	dhl_address_form.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1728	dhl_address_form.exe
1728	dhl_address_form.exe
1728	dhl_address_form.exe
2456	InstallUtil.exe
2456	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	dhl_address_form.exe
Token: SeDebugPrivilege	2456	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2456	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31
PID 1728 wrote to memory of 2456	1728	dhl_address_form.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\dhl_address_form.exe
"C:\Users\Admin\AppData\Local\Temp\dhl_address_form.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

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

\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1728-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1728-1-0x0000000000B90000-0x0000000000C46000-memory.dmp

Filesize
728KB

Download
memory/1728-2-0x0000000000300000-0x000000000030A000-memory.dmp

Filesize
40KB

Download
memory/1728-3-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-5-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-6-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1728-7-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-8-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/1728-26-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2456-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2456-15-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-13-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-12-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-18-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-21-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-25-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-27-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2456-14-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2456-28-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2456-29-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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