agenttesla | ca471400001374bddf5e6ff03db7889cf53bd516fe64209faee8b894b454c3c5

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
2860	powershell.exe
2604	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-1-5-21-1506706701-1246725540-2219210854-1000\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 1628 set thread context of 1576	1628	autorization Letter.exe	36

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
2804	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1628	autorization Letter.exe
1628	autorization Letter.exe
1628	autorization Letter.exe
2860	powershell.exe
2604	powershell.exe
1576	RegSvcs.exe
1576	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	autorization Letter.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	1576	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2860	1628	autorization Letter.exe	30
PID 1628 wrote to memory of 2860	1628	autorization Letter.exe	30
PID 1628 wrote to memory of 2860	1628	autorization Letter.exe	30
PID 1628 wrote to memory of 2860	1628	autorization Letter.exe	30
PID 1628 wrote to memory of 2604	1628	autorization Letter.exe	32
PID 1628 wrote to memory of 2604	1628	autorization Letter.exe	32
PID 1628 wrote to memory of 2604	1628	autorization Letter.exe	32
PID 1628 wrote to memory of 2604	1628	autorization Letter.exe	32
PID 1628 wrote to memory of 2804	1628	autorization Letter.exe	33
PID 1628 wrote to memory of 2804	1628	autorization Letter.exe	33
PID 1628 wrote to memory of 2804	1628	autorization Letter.exe	33
PID 1628 wrote to memory of 2804	1628	autorization Letter.exe	33
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36
PID 1628 wrote to memory of 1576	1628	autorization Letter.exe	36

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:1628
- 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:2860
- 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:2604
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tIFjYTCo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4470.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2804
- 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:1576

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\tmp4470.tmp

Filesize
1KB

MD5
521e6e87a864e43c79c68ecc9522d85b

SHA1
ccfcf78f073da8c2de11fd688fa30bc9d83d1f0f

SHA256
f90af1e98ab8ae287a8238bc292ff4ae89dc76b9d19675ec871b371637829151

SHA512
21b34a1ad6ed8604518ab8d315d2034208d230a1ba0c4303289c3a13a727ecd361ca08cfc2fbe7670deda914ade1bc5d146c6aebf1b02ea81c7c9594e4f123ec

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6EIKAIRI1VPUSP710KEY.temp

Filesize
7KB

MD5
5f526a3dd3f071268e028b2ac631f95b

SHA1
b64af74d70c47d100998af89616465b0cc7e8b4f

SHA256
515712c11dfec65909760f26122662a25ac49050dfed37b48ccad0e676142f6b

SHA512
d36f4e39cc0e25a65985af8161832ba891f29ae0cae28359d5835a8d92b2d83b18e61738be2d4f3a07635c043b92edb4b9a50f9dc5c7f046e7d92d2cfc1d2d19

Download Submit
memory/1576-29-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-28-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-22-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-26-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1576-30-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1576-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1628-6-0x0000000005210000-0x0000000005294000-memory.dmp

Filesize
528KB

Download
memory/1628-1-0x0000000000E90000-0x0000000000F60000-memory.dmp

Filesize
832KB

Download
memory/1628-0-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/1628-2-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/1628-3-0x0000000000450000-0x0000000000462000-memory.dmp

Filesize
72KB

Download
memory/1628-5-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/1628-4-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/1628-31-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads