agenttesla | 6dafa379cab8cf6a545e3e018c8afa2dd888f7e168bacf2a24de7ae8644aeef5

Analysis

max time kernel
74s
max time network
67s
platform
windows7_x64
resource
win7-20220331-en
submitted
12/04/2022, 11:31

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General

Target
2022-04-12.exe
Size 840KB
Sample220412-nmpsdsbbgk
SHA256 6dafa379cab8cf6a545e3e018c8afa2dd888f7e168bacf2a24de7ae8644aeef5
MD5 b4dfeb164489d6dd7a8338d1dd08bcf5
SHA1 59e076b00876998453bc31b87c6e0cf4547d4957
SHA512 282882d09ff7c47ee505a88fd803c792066410f72fc1d484b10d13cd584e81ac31a72196ff33c9bcfd92e51c10d587787474c3051ff75cc4b94a21f93597584f
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
smtp.tranpotescamdonic.us
Port
587
Username
[email protected]
Password
#fKav*!OJ6

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.tranpotescamdonic.us
Port
587
Username
[email protected]
Password
#fKav*!OJ6

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
1760	InstallUtil.exe

Loads dropped DLL 1 IoCs

pid	Process
1932	2022-04-12.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-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Windows\CurrentVersion\Run\ocDFlo = "C:\\Users\\Admin\\AppData\\Roaming\\ocDFlo\\ocDFlo.exe"	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1932 set thread context of 1760	1932	2022-04-12.exe	28

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1932	2022-04-12.exe
1932	2022-04-12.exe
1760	InstallUtil.exe
1760	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	2022-04-12.exe
Token: SeDebugPrivilege	1760	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28
PID 1932 wrote to memory of 1760	1932	2022-04-12.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\2022-04-12.exe
"C:\Users\Admin\AppData\Local\Temp\2022-04-12.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

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 40KB
SHA256 e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
MD5 91c9ae9c9a17a9db5e08b120e668c74c
SHA1 50770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA512 ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
SSDEEP 384:etpFVLK0MsihB9VKS7xdguKKJ9Yl6dnPU3SERztmbqCJstdMardz/JikPZ+xPZTf:yBMs2Sqd9p6Iq8R/2dVixLeUp
MD5 SHA1 SHA512 SSDEEP

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InstallUtil.exe

Path C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Size 40KB
SHA256 e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
MD5 91c9ae9c9a17a9db5e08b120e668c74c
SHA1 50770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA512 ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
SSDEEP 384:etpFVLK0MsihB9VKS7xdguKKJ9Yl6dnPU3SERztmbqCJstdMardz/JikPZ+xPZTf:yBMs2Sqd9p6Iq8R/2dVixLeUp
MD5 SHA1 SHA512 SSDEEP

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InstallUtil.exe

Path \Users\Admin\AppData\Local\Temp\InstallUtil.exe
Size 40KB
SHA256 e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
MD5 91c9ae9c9a17a9db5e08b120e668c74c
SHA1 50770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA512 ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
SSDEEP 384:etpFVLK0MsihB9VKS7xdguKKJ9Yl6dnPU3SERztmbqCJstdMardz/JikPZ+xPZTf:yBMs2Sqd9p6Iq8R/2dVixLeUp
MD5 SHA1 SHA512 SSDEEP

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memory/1760-69-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-76-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-60-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-61-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-63-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-64-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-73-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1760-68-0x0000000000090000-0x00000000000CA000-memory.dmp

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memory/1932-54-0x0000000000A20000-0x0000000000AF8000-memory.dmp

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memory/1932-56-0x00000000005F0000-0x0000000000606000-memory.dmp

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memory/1932-58-0x0000000000980000-0x0000000000986000-memory.dmp

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memory/1932-57-0x0000000000630000-0x000000000064A000-memory.dmp

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memory/1932-55-0x0000000000570000-0x00000000005A2000-memory.dmp

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