agenttesla | 1d9a5a1ad734aa6cca8a32b8f4e5d16c20582146fc96acaeb39d54b907a2b978

Analysis

max time kernel
108s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
05/05/2022, 05:56

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General

Target
123a3a0b79058d0004e8d5d0f48d9784.exe
Size 735KB
Sample220505-gm296aaagk
SHA256 1d9a5a1ad734aa6cca8a32b8f4e5d16c20582146fc96acaeb39d54b907a2b978
MD5 123a3a0b79058d0004e8d5d0f48d9784
SHA1 78b3a768894e41b11155e5d3331df61b38c39e61
SHA512 e000e655c141f3d345f05dc7134590bb24aa3f7941d47add853c9fd748022d1d834ea72e47c3c278f147cd7b0e5b4b3b382c9d4bc4140562b9537bbe89482377
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.servay.com.my
Port
587
Username
[email protected]
Password
Qaz789

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.servay.com.my
Port
587
Username
[email protected]
Password
Qaz789
Email to
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

Executes dropped EXE 1 IoCs

pid	Process
2640	InstallUtil.exe

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2676 set thread context of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2676	123a3a0b79058d0004e8d5d0f48d9784.exe
2676	123a3a0b79058d0004e8d5d0f48d9784.exe
2640	InstallUtil.exe
2640	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	123a3a0b79058d0004e8d5d0f48d9784.exe
Token: SeDebugPrivilege	2640	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2640	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92
PID 2676 wrote to memory of 2640	2676	123a3a0b79058d0004e8d5d0f48d9784.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\123a3a0b79058d0004e8d5d0f48d9784.exe
"C:\Users\Admin\AppData\Local\Temp\123a3a0b79058d0004e8d5d0f48d9784.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

InstallUtil.exe

Path C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Size 41KB
SHA256 ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3
MD5 5d4073b2eb6d217c19f2b22f21bf8d57
SHA1 f0209900fbf08d004b886a0b3ba33ea2b0bf9da8
SHA512 9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159
SSDEEP 384:qtpFVLK0MsihB9VKS7xdgl6KJ9Yl6dnPU3SERztmbqCJstdMardz/JikPZ+RPZTg:GBMs2SqdSZ6Iq8BxTfqWR8h7ukP
MD5 SHA1 SHA512 SSDEEP

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InstallUtil.exe

Path C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Size 41KB
SHA256 ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3
MD5 5d4073b2eb6d217c19f2b22f21bf8d57
SHA1 f0209900fbf08d004b886a0b3ba33ea2b0bf9da8
SHA512 9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159
SSDEEP 384:qtpFVLK0MsihB9VKS7xdgl6KJ9Yl6dnPU3SERztmbqCJstdMardz/JikPZ+RPZTg:GBMs2SqdSZ6Iq8BxTfqWR8h7ukP
MD5 SHA1 SHA512 SSDEEP

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memory/2640-137-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/2640-140-0x0000000006470000-0x00000000064D6000-memory.dmp

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memory/2640-141-0x0000000006F70000-0x0000000006FC0000-memory.dmp

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memory/2676-130-0x0000000000B40000-0x0000000000BFE000-memory.dmp

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memory/2676-131-0x0000000005AC0000-0x0000000006064000-memory.dmp

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memory/2676-132-0x00000000055B0000-0x000000000564C000-memory.dmp

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memory/2676-133-0x0000000006390000-0x0000000006422000-memory.dmp

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memory/2676-134-0x0000000006440000-0x000000000644A000-memory.dmp

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memory/2676-135-0x00000000081B0000-0x00000000081D2000-memory.dmp

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