agenttesla | eb13bbf89dde5a3876a66aac08acf362b86adb97b2c6fd08f394f7088a4c2b11

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 07:09

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General

Target

Buyurtma.exe
Size

576KB
MD5

95b44c8d8b9fc5aa08c54c7e1839f346
SHA1

ed9e04421ed3d78fceb93d8df0eef08616cb1808
SHA256

f267ae557c75a40bff905fa66b8e7230f3bf58a57645cc945650bd7ecdf71d0a
SHA512

5b5b75554d77b99c372e8f5cfb6b4c576ae59be13d99219cad06515c12dc8d6ab704cdd55dc775218369d6fbaf1cfa00aa600a754d1859aaf7a46eaf9645d4a3
SSDEEP

12288:icajcXH2pvgIEzS6pCnH2MJNOh9ixMt/LIuiFyN:icaIXIvTE+6pCNkh9i6ZI7Fy

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
romeovm2015

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/4432-15-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	Buyurtma.exe

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 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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Buyurtma.exe
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Buyurtma.exe
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Buyurtma.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	Buyurtma.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
41	api.ipify.org
42	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3152 set thread context of 4432	3152	Buyurtma.exe	93

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Buyurtma.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Buyurtma.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4772	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3152	Buyurtma.exe
3152	Buyurtma.exe
3152	Buyurtma.exe
4432	Buyurtma.exe
4432	Buyurtma.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4432	Buyurtma.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3152	Buyurtma.exe
Token: SeDebugPrivilege	4432	Buyurtma.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 4772	3152	Buyurtma.exe	91
PID 3152 wrote to memory of 4772	3152	Buyurtma.exe	91
PID 3152 wrote to memory of 4772	3152	Buyurtma.exe	91
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93
PID 3152 wrote to memory of 4432	3152	Buyurtma.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Buyurtma.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Buyurtma.exe

C:\Users\Admin\AppData\Local\Temp\Buyurtma.exe
"C:\Users\Admin\AppData\Local\Temp\Buyurtma.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LkLecA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E3D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4772
- C:\Users\Admin\AppData\Local\Temp\Buyurtma.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Buyurtma.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3E3D.tmp

Filesize
1KB

MD5
dfdc9a1d66ddd3549ef9e8c018731f84

SHA1
8436cf293a58aac42f3d76b5ddbf3a2395efa12d

SHA256
4ac3699c3e353b3171b0561d2c3e08326cf187612652817cf072638221a4a70f

SHA512
925478fe525483b471e5b80320d8db0ba7cde7fe7d317ed183cae5789e1d497eec039fabe680017e1e737c65d38a81ec1037c1f805acdef594d53b0980b747c1

Download Submit
memory/3152-6-0x0000000004C20000-0x0000000004CBC000-memory.dmp

Filesize
624KB

Download
memory/3152-19-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3152-2-0x0000000005020000-0x00000000055C4000-memory.dmp

Filesize
5.6MB

Download
memory/3152-5-0x0000000004B50000-0x0000000004B5A000-memory.dmp

Filesize
40KB

Download
memory/3152-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/3152-7-0x0000000004B40000-0x0000000004B52000-memory.dmp

Filesize
72KB

Download
memory/3152-8-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/3152-9-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3152-10-0x0000000005960000-0x00000000059D6000-memory.dmp

Filesize
472KB

Download
memory/3152-1-0x0000000000060000-0x00000000000F6000-memory.dmp

Filesize
600KB

Download
memory/3152-4-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3152-3-0x0000000004A70000-0x0000000004B02000-memory.dmp

Filesize
584KB

Download
memory/3152-11-0x0000000007FF0000-0x000000000805C000-memory.dmp

Filesize
432KB

Download
memory/4432-28-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-18-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-20-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-21-0x00000000059A0000-0x00000000059B8000-memory.dmp

Filesize
96KB

Download
memory/4432-22-0x0000000006370000-0x00000000063D6000-memory.dmp

Filesize
408KB

Download
memory/4432-23-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-24-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-26-0x0000000007000000-0x0000000007050000-memory.dmp

Filesize
320KB

Download
memory/4432-27-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4432-15-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download