agenttesla | 96c9133f07d45f5b33402a782fc456f9eeef61a8111d6ec5ede8cb7d77ba9312

General

Target

PO 17072020 4356553.exe
Size

691KB
MD5

f75af85fecfba08c11665e2a6a8b77d7
SHA1

973ba0ad4191d54a534b720f032ad3161df531d4
SHA256

96c9133f07d45f5b33402a782fc456f9eeef61a8111d6ec5ede8cb7d77ba9312
SHA512

6e68d157ba78aa719477a14bc36648c58a7c5aa0570c8d779fc5d6b16ca2997d8790f2cedea8052b0da61cbe968f9f055eaebf1fe5298ae5cab80ddcb49b621e

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.laben.com.tr
Port:
587
Username:
[email protected]
Password:
bcUmu3VcCvjQ

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/1908-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1908-15-0x0000000000446F2E-mapping.dmp	family_agenttesla
behavioral1/memory/1908-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1908-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1400	chromee.exe
1908	RegAsm.exe

Loads dropped DLL 3 IoCs

pid	Process
616	PO 17072020 4356553.exe
1400	chromee.exe
1908	RegAsm.exe

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-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\chromee = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\chromee.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1400 set thread context of 1908	1400	chromee.exe	30

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 8 IoCs

pid	Process
616	PO 17072020 4356553.exe
616	PO 17072020 4356553.exe
616	PO 17072020 4356553.exe
1400	chromee.exe
1400	chromee.exe
1400	chromee.exe
1908	RegAsm.exe
1908	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	616	PO 17072020 4356553.exe
Token: SeDebugPrivilege	1400	chromee.exe
Token: SeDebugPrivilege	1908	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 616 wrote to memory of 792	616	PO 17072020 4356553.exe	24
PID 616 wrote to memory of 792	616	PO 17072020 4356553.exe	24
PID 616 wrote to memory of 792	616	PO 17072020 4356553.exe	24
PID 616 wrote to memory of 792	616	PO 17072020 4356553.exe	24
PID 792 wrote to memory of 360	792	cmd.exe	26
PID 792 wrote to memory of 360	792	cmd.exe	26
PID 792 wrote to memory of 360	792	cmd.exe	26
PID 792 wrote to memory of 360	792	cmd.exe	26
PID 616 wrote to memory of 1400	616	PO 17072020 4356553.exe	27
PID 616 wrote to memory of 1400	616	PO 17072020 4356553.exe	27
PID 616 wrote to memory of 1400	616	PO 17072020 4356553.exe	27
PID 616 wrote to memory of 1400	616	PO 17072020 4356553.exe	27
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30
PID 1400 wrote to memory of 1908	1400	chromee.exe	30

C:\Users\Admin\AppData\Local\Temp\PO 17072020 4356553.exe
"C:\Users\Admin\AppData\Local\Temp\PO 17072020 4356553.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v chromee /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:792
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v chromee /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
    3⤵
    - Adds Run key to start application
    PID:360
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1400
- - C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1908-14-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1908-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1908-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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