agenttesla | 8cedabd5e192202c9f52181d467c1ec1543bbf25213f1ebe425e2977dc33e050

General

Target

Bestell-Nr. 450271795.rtf
Size

775KB
MD5

1090a7ff13cb764f333240ea84c72f27
SHA1

f6a2611eb0f69f2f8717b5e5872f4c6d47bfec4d
SHA256

0620258a9b47a789be83096283f39a7d6681e3c1d62fbe49595f6c0a45c21d6b
SHA512

506bf6e90c8e94748e51a92d442666a03e89dca7fd9b89397c0ad443dd4d2e785794e6e9e365c90548cdd38c6afa7089a527cf2e97e7bf86335ce1cc5172c4c3
SSDEEP

6144:IwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAg:hdv

Score

10^/10

agenttesla credential_access discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
aowapnzgtwgqowgt
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2268	EQNEDT32.EXE

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2908	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2212	uhdsbplugorig99923.exe
2828	uhdsbplugorig99923.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	EQNEDT32.EXE

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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 stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2212 set thread context of 2828	2212	uhdsbplugorig99923.exe	37

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhdsbplugorig99923.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhdsbplugorig99923.exe

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
2268	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1872	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2828	uhdsbplugorig99923.exe
2828	uhdsbplugorig99923.exe
2908	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	uhdsbplugorig99923.exe
Token: SeDebugPrivilege	2908	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1872	WINWORD.EXE
1872	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2212	2268	EQNEDT32.EXE	33
PID 2268 wrote to memory of 2212	2268	EQNEDT32.EXE	33
PID 2268 wrote to memory of 2212	2268	EQNEDT32.EXE	33
PID 2268 wrote to memory of 2212	2268	EQNEDT32.EXE	33
PID 1872 wrote to memory of 2284	1872	WINWORD.EXE	35
PID 1872 wrote to memory of 2284	1872	WINWORD.EXE	35
PID 1872 wrote to memory of 2284	1872	WINWORD.EXE	35
PID 1872 wrote to memory of 2284	1872	WINWORD.EXE	35
PID 2212 wrote to memory of 2908	2212	uhdsbplugorig99923.exe	36
PID 2212 wrote to memory of 2908	2212	uhdsbplugorig99923.exe	36
PID 2212 wrote to memory of 2908	2212	uhdsbplugorig99923.exe	36
PID 2212 wrote to memory of 2908	2212	uhdsbplugorig99923.exe	36
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37
PID 2212 wrote to memory of 2828	2212	uhdsbplugorig99923.exe	37

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Bestell-Nr. 450271795.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2284

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe
  "C:\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2212
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2908
- - C:\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe
    "C:\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
19KB

MD5
10e77a707aca902b13c1c775e4ec8d49

SHA1
67927a50c9c51d72d8f674d18d6ae4b847983c90

SHA256
378091e8574c614aae1fbc855fcdee720e51307ff5245ced556977826bc9efda

SHA512
2141da0678242622986243bf9b9f1d8c5499d63989f325a89946e91f64135bdee0b5b1008f3ac3d2338cb295449bf7c97a1df35b8378a41d8724078b96d0498d

Download Submit
\Users\Admin\AppData\Roaming\uhdsbplugorig99923.exe

Filesize
681KB

MD5
701c09fe0ab5475965474feaccf7dfb0

SHA1
77c28d99d536f03718e9c928898b043ae87289ce

SHA256
85e480ab84b533af7f53d5422856e9aded55a4095160b8491a852a737d4b5964

SHA512
203450a8563d1d90533d1d114e470a46058b46d01164e4aa89f96bffd5ee72d60c57778272b54c7b5425eb9dde22c3333832668a1d27145d089d7c33b8463a66

Download Submit
memory/1872-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1872-2-0x00000000713AD000-0x00000000713B8000-memory.dmp

Filesize
44KB

Download
memory/1872-21-0x00000000713AD000-0x00000000713B8000-memory.dmp

Filesize
44KB

Download
memory/1872-0-0x000000002FFD1000-0x000000002FFD2000-memory.dmp

Filesize
4KB

Download
memory/1872-59-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2212-13-0x000000006B52E000-0x000000006B52F000-memory.dmp

Filesize
4KB

Download
memory/2212-15-0x0000000000C10000-0x0000000000CBA000-memory.dmp

Filesize
680KB

Download
memory/2212-16-0x00000000005F0000-0x0000000000608000-memory.dmp

Filesize
96KB

Download
memory/2212-22-0x000000006B52E000-0x000000006B52F000-memory.dmp

Filesize
4KB

Download
memory/2212-23-0x0000000004D30000-0x0000000004DB2000-memory.dmp

Filesize
520KB

Download
memory/2828-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-36-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-30-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-33-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

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