agenttesla | 63a8fc1247dd5615235428bfe7eeed1abea8a1199071649cf575f43012dfcfdd

General

Target

63a8fc1247dd5615235428bfe7eeed1abea8a1199071649cf575f43012dfcfdd.rtf
Size

651KB
MD5

2c9c398b48a5dd09677fcc4e1fd801e1
SHA1

99a62ef8e1088516c1b9dc497d3f92a2eb455e85
SHA256

63a8fc1247dd5615235428bfe7eeed1abea8a1199071649cf575f43012dfcfdd
SHA512

b11b9705d46eab703c1f90d4f170630b6aa8f5b26756bc416e9a8f960de9193653f5eb17f0f3bb6720a09736ed12e6a1371a8c4b952d1c83727ce14a347700e2
SSDEEP

6144:6wAYwAYwAYwAYwAnvAJ1pqGUoD4mZEvOWd5MxIpu6:bJa

Score

10^/10

agenttesla 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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	2524	EQNEDT32.EXE
5	2524	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
928	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2572	vvndewpluori91026.exe
1732	vvndewpluori91026.exe

Loads dropped DLL 1 IoCs

pid	Process
2524	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 3 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

Credentials from Web Browsers
T1555.003

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 2572 set thread context of 1732	2572	vvndewpluori91026.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	vvndewpluori91026.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	vvndewpluori91026.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
2524	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2240	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1732	vvndewpluori91026.exe
1732	vvndewpluori91026.exe
928	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	vvndewpluori91026.exe
Token: SeDebugPrivilege	928	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2240	WINWORD.EXE
2240	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2572	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2572	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2572	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2572	2524	EQNEDT32.EXE	32
PID 2240 wrote to memory of 1400	2240	WINWORD.EXE	35
PID 2240 wrote to memory of 1400	2240	WINWORD.EXE	35
PID 2240 wrote to memory of 1400	2240	WINWORD.EXE	35
PID 2240 wrote to memory of 1400	2240	WINWORD.EXE	35
PID 2572 wrote to memory of 928	2572	vvndewpluori91026.exe	36
PID 2572 wrote to memory of 928	2572	vvndewpluori91026.exe	36
PID 2572 wrote to memory of 928	2572	vvndewpluori91026.exe	36
PID 2572 wrote to memory of 928	2572	vvndewpluori91026.exe	36
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.exe	37
PID 2572 wrote to memory of 1732	2572	vvndewpluori91026.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\63a8fc1247dd5615235428bfe7eeed1abea8a1199071649cf575f43012dfcfdd.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:2240
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1400

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:2524
- C:\Users\Admin\AppData\Roaming\vvndewpluori91026.exe
  "C:\Users\Admin\AppData\Roaming\vvndewpluori91026.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vvndewpluori91026.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:928
- - C:\Users\Admin\AppData\Roaming\vvndewpluori91026.exe
    "C:\Users\Admin\AppData\Roaming\vvndewpluori91026.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1732

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
20KB

MD5
eae3400cb1cea058e42168e865e6efe3

SHA1
18a8ea83cf1822dc085cc7ee5cd519c1ad266c10

SHA256
54943d593b9807aee3ca02cef9be2b8c15c9cb7a09d41f0887074e2865e5252f

SHA512
74968d7aa5a0db11a892ecd302ce97f7a06f219d774cabbef8c1991d8ba944bf8d1993bf6c998dc832f34ba05ff9986f411b274fcf7824a55cad90881319da02

Download Submit
C:\Users\Admin\AppData\Roaming\vvndewpluori91026.exe

Filesize
653KB

MD5
432644163e0aaa8a0269179e0e036eae

SHA1
b504d2a91b22bb45b886c1d117dacdfa724fe262

SHA256
f3c9e7b2e91b53c3256429497a9fb5d2cd449aca5d5a3b9fb705fe7d8c55d699

SHA512
f076b13cf11a2af5a5d008e62286ab1def0bdbf01e5f1388341575ac78552cb8ae140ba9f73041d239a0e2aa2a36db525b681d9bf138b3a6c815c8f41941e80c

Download Submit
memory/1732-32-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-38-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-30-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1732-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-37-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1732-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2240-0-0x000000002F8D1000-0x000000002F8D2000-memory.dmp

Filesize
4KB

Download
memory/2240-5-0x0000000071A0D000-0x0000000071A18000-memory.dmp

Filesize
44KB

Download
memory/2240-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2240-2-0x0000000071A0D000-0x0000000071A18000-memory.dmp

Filesize
44KB

Download
memory/2240-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2240-62-0x0000000071A0D000-0x0000000071A18000-memory.dmp

Filesize
44KB

Download
memory/2572-25-0x0000000005780000-0x0000000005802000-memory.dmp

Filesize
520KB

Download
memory/2572-24-0x000000006BB1E000-0x000000006BB1F000-memory.dmp

Filesize
4KB

Download
memory/2572-18-0x00000000003B0000-0x00000000003C2000-memory.dmp

Filesize
72KB

Download
memory/2572-17-0x0000000000A70000-0x0000000000B1A000-memory.dmp

Filesize
680KB

Download
memory/2572-15-0x000000006BB1E000-0x000000006BB1F000-memory.dmp

Filesize
4KB

Download

Analysis

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