agenttesla | 60ce7c5743d5aa5319e0e335f8369bdb61ca226c436ea7333f9718a514949327

General

Target

hesaphareket.doc
Size

18KB
MD5

b18154554010987ba334b643418994fc
SHA1

582deb49f5c502441c967c5ff294c72f8eed2686
SHA256

60ce7c5743d5aa5319e0e335f8369bdb61ca226c436ea7333f9718a514949327
SHA512

9f68de3f29af0721fa709a41bef1648d9ddd44c5ba5cfa45e60db7f7d7384c148b8e299032650ce3b8de09bc67089aa36ebfbdc959f151b1843cfabfbe11d6d6

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
bh-58.webhostbox.net
Port:
587
Username:
[email protected]
Password:
7213575aceACE@#$

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/2004-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2004-6-0x0000000000446D6E-mapping.dmp	family_agenttesla
behavioral1/memory/2004-8-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2004-9-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1060	EQNEDT32.EXE

Executes dropped EXE 2 IoCs

pid	Process
1904	chekwae35826.exe
2004	chekwae35826.exe

Loads dropped DLL 2 IoCs

pid	Process
1060	EQNEDT32.EXE
1060	EQNEDT32.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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\chekwa = "C:\\Users\\Admin\\AppData\\Local\\Temp\\chekwa\\chekwa.exe"	chekwae35826.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1904 set thread context of 2004	1904	chekwae35826.exe	29

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1060	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1612	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2004	chekwae35826.exe
2004	chekwae35826.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	chekwae35826.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1612	WINWORD.EXE
1612	WINWORD.EXE
2004	chekwae35826.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 1904	1060	EQNEDT32.EXE	27
PID 1060 wrote to memory of 1904	1060	EQNEDT32.EXE	27
PID 1060 wrote to memory of 1904	1060	EQNEDT32.EXE	27
PID 1060 wrote to memory of 1904	1060	EQNEDT32.EXE	27
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29
PID 1904 wrote to memory of 2004	1904	chekwae35826.exe	29

C:\Program Files\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\hesaphareket.doc"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1612

C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Users\Admin\AppData\Roaming\chekwae35826.exe
  "C:\Users\Admin\AppData\Roaming\chekwae35826.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1904
- - C:\Users\Admin\AppData\Roaming\chekwae35826.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2004-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2004-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2004-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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