agenttesla | 8f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575

General

Target

Dekont.exe
Size

771KB
MD5

e6e0c9a9a19145589f731d7380544b97
SHA1

16c015e77df27881bfd08e50a2e1257ddbec8503
SHA256

8f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575
SHA512

07ce4fd45b62a2a2fc07527c16b869fe86ab0c5081cbae77a79301d368b456a6607880d3a6d28adbc74f2a5c5f2c4f263eeb87f84e65e220c934d82fb952b31a

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/0x00040000000131b2-6.dat	family_agenttesla
behavioral1/files/0x00040000000131b2-8.dat	family_agenttesla
behavioral1/files/0x00040000000131b2-9.dat	family_agenttesla
behavioral1/memory/1916-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1916-18-0x0000000000446EBE-mapping.dmp	family_agenttesla
behavioral1/memory/1916-20-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1916-22-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1796	application.exe
1916	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
616	Dekont.exe
1796	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-1-5-21-1131729243-447456001-3632642222-1000\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\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 1796 set thread context of 1916	1796	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
616	Dekont.exe
616	Dekont.exe
616	Dekont.exe
1796	application.exe
1796	application.exe
1796	application.exe
1916	InstallUtil.exe
1916	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	616	Dekont.exe
Token: SeDebugPrivilege	1796	application.exe
Token: SeDebugPrivilege	1916	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 616 wrote to memory of 748	616	Dekont.exe	24
PID 616 wrote to memory of 748	616	Dekont.exe	24
PID 616 wrote to memory of 748	616	Dekont.exe	24
PID 616 wrote to memory of 748	616	Dekont.exe	24
PID 748 wrote to memory of 1644	748	cmd.exe	26
PID 748 wrote to memory of 1644	748	cmd.exe	26
PID 748 wrote to memory of 1644	748	cmd.exe	26
PID 748 wrote to memory of 1644	748	cmd.exe	26
PID 616 wrote to memory of 1796	616	Dekont.exe	27
PID 616 wrote to memory of 1796	616	Dekont.exe	27
PID 616 wrote to memory of 1796	616	Dekont.exe	27
PID 616 wrote to memory of 1796	616	Dekont.exe	27
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	application.exe	30
PID 1796 wrote to memory of 1916	1796	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:616
- 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:748
- - 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:1644
- 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:1796
- - 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:1916

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

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Downloads

memory/1916-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1916-20-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1916-22-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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