agenttesla | 20868c1653dfe702c2192bf09fd0aa2fa7424a341dcc89c4883260a0747c479f

General

Target

autorization Letter.exe
Size

821KB
MD5

457f6cb01c6f3f7922ac201f70111ae5
SHA1

934e5433fc83af812db461e3e7748c311e19b1bc
SHA256

ca471400001374bddf5e6ff03db7889cf53bd516fe64209faee8b894b454c3c5
SHA512

2403c0ab282e085b54ab5689fbae2328cf16d19bdec2edb24e32ad6bab79bdf2aba26aa52a48b44f9f573e390636a1401c7f7b30104eda131d4bec9776d06a9b
SSDEEP

24576:4nIY7owVZppDU/4p2v213ZYip6rhrCWKjMA:4t7o6Zp9L2v2TYXrhrCWkMA

Score

10^/10

agenttesla discovery execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.unitechautomations.com
Port:
587
Username:
[email protected]
Password:
Unitech@123
Email To:
[email protected]

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
660	powershell.exe
2704	powershell.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\GUIVTme = "C:\\Users\\Admin\\AppData\\Roaming\\GUIVTme\\GUIVTme.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2092 set thread context of 3064	2092	autorization Letter.exe	37

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 5 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	autorization Letter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.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
612	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2092	autorization Letter.exe
2092	autorization Letter.exe
2092	autorization Letter.exe
2704	powershell.exe
660	powershell.exe
3064	RegSvcs.exe
3064	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	autorization Letter.exe
Token: SeDebugPrivilege	3064	RegSvcs.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	660	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 660	2092	autorization Letter.exe	31
PID 2092 wrote to memory of 660	2092	autorization Letter.exe	31
PID 2092 wrote to memory of 660	2092	autorization Letter.exe	31
PID 2092 wrote to memory of 660	2092	autorization Letter.exe	31
PID 2092 wrote to memory of 2704	2092	autorization Letter.exe	33
PID 2092 wrote to memory of 2704	2092	autorization Letter.exe	33
PID 2092 wrote to memory of 2704	2092	autorization Letter.exe	33
PID 2092 wrote to memory of 2704	2092	autorization Letter.exe	33
PID 2092 wrote to memory of 612	2092	autorization Letter.exe	34
PID 2092 wrote to memory of 612	2092	autorization Letter.exe	34
PID 2092 wrote to memory of 612	2092	autorization Letter.exe	34
PID 2092 wrote to memory of 612	2092	autorization Letter.exe	34
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37
PID 2092 wrote to memory of 3064	2092	autorization Letter.exe	37

C:\Users\Admin\AppData\Local\Temp\autorization Letter.exe
"C:\Users\Admin\AppData\Local\Temp\autorization Letter.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\autorization Letter.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:660
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tIFjYTCo.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tIFjYTCo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp435.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:612
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp435.tmp

Filesize
1KB

MD5
3c4cffdd92e51e1d706ae6e85c266b15

SHA1
935229fad5d61d78bf9f055df179422e8354fa9b

SHA256
51f7b9ce4ded1d73f4047db458f9809bdb27ed66fcb9e2841984735fd5a42044

SHA512
1fc9bcfbe033d12511e161499ec61a84d78df22f8c762bc1c865ad2c5aa054256adb5fb90cbdd39655d6b8285d8afb150d87d1b6c417b116d1b34aa4c6540770

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\WDPDL0JPUAS5PCEX5IAC.temp

Filesize
7KB

MD5
5eced434f7446c9f9374fa8407a72e2e

SHA1
73c8be16113aae578b6fbf3336902c7841b3bcb1

SHA256
4db1183d33ec00028f35fe80874f4d7d0dc7f3d061c1f536477cc7a224d63199

SHA512
c6a5168d20db6f1046118765e0d19b8028a619f65add7b33be4c5321bea6ea865ed6cd861f76c70346528e060ac97849d119daa1501d828e29fb751808fc837f

Download Submit
memory/2092-4-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2092-31-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2092-5-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-6-0x0000000005250000-0x00000000052D4000-memory.dmp

Filesize
528KB

Download
memory/2092-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-1-0x00000000011D0000-0x00000000012A0000-memory.dmp

Filesize
832KB

Download
memory/2092-3-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/3064-25-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-29-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-28-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3064-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3064-30-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads