agenttesla | dfb9666882363b2ddc9e90faa33546c68b97d8524ff73eb6cc21ea81f2da7301

Analysis

max time kernel
117s
max time network
12s
platform
windows7_x64
resource
win7v20201028
submitted
09/11/2020, 20:30

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General

Target
07825dbfee7bbe34dfce52fa8ee399b0.exe
Size 513KB
Sample201109-ekh2rrtra6
SHA256 dfb9666882363b2ddc9e90faa33546c68b97d8524ff73eb6cc21ea81f2da7301
MD5 07825dbfee7bbe34dfce52fa8ee399b0
SHA1 41a5b81a11221c4371e4ac66c2225c76ac87f2c4
SHA512 ef61c0e202a717279fe40c8df07cb156779012afd8959e916ea1386371330e95e06cb0224fc195ea860b9a8095cb3cb7aa5f0fcfaa4a33e25713d97ce480c287
MD5 SHA1 SHA512

Score

10^/10

agenttesla agilenet keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.sesnettelekom.com.tr
Port
587
Username
[email protected]
Password
Hsilby55g

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1160-22-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1160-23-0x000000000044C9FE-mapping.dmp	family_agenttesla
behavioral1/memory/1160-26-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1160-25-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1772	winservie.exe
1160	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
596	07825dbfee7bbe34dfce52fa8ee399b0.exe
1772	winservie.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral1/memory/596-3-0x0000000000460000-0x000000000046F000-memory.dmp	agile_net

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\winservie = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\winservie.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1772 set thread context of 1160	1772	winservie.exe	33

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 9 IoCs

pid	Process
596	07825dbfee7bbe34dfce52fa8ee399b0.exe
596	07825dbfee7bbe34dfce52fa8ee399b0.exe
596	07825dbfee7bbe34dfce52fa8ee399b0.exe
596	07825dbfee7bbe34dfce52fa8ee399b0.exe
1772	winservie.exe
1772	winservie.exe
1772	winservie.exe
1160	InstallUtil.exe
1160	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	596	07825dbfee7bbe34dfce52fa8ee399b0.exe
Token: SeDebugPrivilege	1772	winservie.exe
Token: SeDebugPrivilege	1160	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1160	InstallUtil.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 596 wrote to memory of 1976	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	26
PID 596 wrote to memory of 1976	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	26
PID 596 wrote to memory of 1976	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	26
PID 596 wrote to memory of 1976	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	26
PID 1976 wrote to memory of 1820	1976	cmd.exe	28
PID 1976 wrote to memory of 1820	1976	cmd.exe	28
PID 1976 wrote to memory of 1820	1976	cmd.exe	28
PID 1976 wrote to memory of 1820	1976	cmd.exe	28
PID 596 wrote to memory of 1772	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	32
PID 596 wrote to memory of 1772	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	32
PID 596 wrote to memory of 1772	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	32
PID 596 wrote to memory of 1772	596	07825dbfee7bbe34dfce52fa8ee399b0.exe	32
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1772 wrote to memory of 1160	1772	winservie.exe	33
PID 1160 wrote to memory of 2020	1160	InstallUtil.exe	35
PID 1160 wrote to memory of 2020	1160	InstallUtil.exe	35
PID 1160 wrote to memory of 2020	1160	InstallUtil.exe	35
PID 1160 wrote to memory of 2020	1160	InstallUtil.exe	35

C:\Users\Admin\AppData\Local\Temp\07825dbfee7bbe34dfce52fa8ee399b0.exe
"C:\Users\Admin\AppData\Local\Temp\07825dbfee7bbe34dfce52fa8ee399b0.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:596
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v winservie /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\winservie.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1976
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v winservie /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\winservie.exe"
    3⤵
    - Adds Run key to start application
    PID:1820
- C:\Users\Admin\AppData\Roaming\winservie.exe
  "C:\Users\Admin\AppData\Roaming\winservie.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1160
  - - C:\Windows\SysWOW64\netsh.exe
      "netsh" wlan show profile
      4⤵
      PID:2020

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/596-5-0x0000000000650000-0x0000000000652000-memory.dmp

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memory/596-6-0x0000000000660000-0x0000000000662000-memory.dmp

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memory/596-1-0x0000000000910000-0x0000000000911000-memory.dmp

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memory/596-4-0x0000000000480000-0x0000000000482000-memory.dmp

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memory/596-3-0x0000000000460000-0x000000000046F000-memory.dmp

Download

memory/596-0-0x0000000073D40000-0x000000007442E000-memory.dmp

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memory/1160-26-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/1160-22-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/1160-25-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/1160-27-0x0000000073020000-0x000000007370E000-memory.dmp

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memory/1772-15-0x0000000001010000-0x0000000001011000-memory.dmp

Download

memory/1772-14-0x0000000073D40000-0x000000007442E000-memory.dmp

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