agenttesla | 01da17c9c2c55ea880f5f2d1d1b845d2f534b8fe411bc2ad18e4dba6e24a292f

General

Target

Dekont.exe
Size

694KB
MD5

9e8bd6819de523a6012332c81f2b84e0
SHA1

af4b5ba18445366f1afa7e4c67ea7a1c9382b48e
SHA256

01da17c9c2c55ea880f5f2d1d1b845d2f534b8fe411bc2ad18e4dba6e24a292f
SHA512

1688ff174fd080a820c58ab9d7a0e667f457d80c2a74c76ae0f37f92dfcff2e1a9b7c313e165ea441160d5a1ca01ec4ad031bdc552afef5e590fcb93240493b8

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.decoplanet.net
Port:
587
Username:
[email protected]
Password:
ayla1939

Signatures

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

AgentTesla Payload 7 IoCs

resource	yara_rule
behavioral1/files/0x00040000000131b9-5.dat	family_agenttesla
behavioral1/files/0x00040000000131b9-7.dat	family_agenttesla
behavioral1/files/0x00040000000131b9-8.dat	family_agenttesla
behavioral1/memory/1624-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1624-15-0x0000000000446EBE-mapping.dmp	family_agenttesla
behavioral1/memory/1624-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1624-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
656	application.exe
1624	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
888	Dekont.exe
656	application.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-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\application = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\application.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 656 set thread context of 1624	656	application.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
888	Dekont.exe
888	Dekont.exe
888	Dekont.exe
656	application.exe
656	application.exe
656	application.exe
1624	InstallUtil.exe
1624	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	888	Dekont.exe
Token: SeDebugPrivilege	656	application.exe
Token: SeDebugPrivilege	1624	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 888 wrote to memory of 1796	888	Dekont.exe	26
PID 888 wrote to memory of 1796	888	Dekont.exe	26
PID 888 wrote to memory of 1796	888	Dekont.exe	26
PID 888 wrote to memory of 1796	888	Dekont.exe	26
PID 1796 wrote to memory of 1724	1796	cmd.exe	28
PID 1796 wrote to memory of 1724	1796	cmd.exe	28
PID 1796 wrote to memory of 1724	1796	cmd.exe	28
PID 1796 wrote to memory of 1724	1796	cmd.exe	28
PID 888 wrote to memory of 656	888	Dekont.exe	29
PID 888 wrote to memory of 656	888	Dekont.exe	29
PID 888 wrote to memory of 656	888	Dekont.exe	29
PID 888 wrote to memory of 656	888	Dekont.exe	29
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30
PID 656 wrote to memory of 1624	656	application.exe	30

C:\Users\Admin\AppData\Local\Temp\Dekont.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
    3⤵
    - Adds Run key to start application
    PID:1724
- C:\Users\Admin\AppData\Roaming\application.exe
  "C:\Users\Admin\AppData\Roaming\application.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:656
- - 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
    PID:1624

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/1624-14-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1624-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1624-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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