agenttesla | 947aecd3aec98961186f255e1aa992ca51763f9a8dcfbf508977d6dbbfa72c5a

General

Target

SWIFTCOPY-NEOKEM.rtf
Size

666KB
MD5

39f1d0229752b47fea356920fe89acac
SHA1

e3ab746165d52d284f9aea95200f79269683222f
SHA256

947aecd3aec98961186f255e1aa992ca51763f9a8dcfbf508977d6dbbfa72c5a
SHA512

9af34c5acfbcfe55672f635d3da73906d073242751a0b702252e6cc28537e3c1a6e974b9ce3a2713a3a526e6cd327ca3ae74d5ffe7d5d74c6c78846545cb625a
SSDEEP

6144:xwAYwAYwAyPFx0drscDjhOt/CnYHSxnkdd6:b

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 2 IoCs

flow	pid	Process
4	2240	EQNEDT32.EXE
7	2240	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
1188	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2788	plugcat556529.exe
1976	plugcat556529.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	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 2788 set thread context of 1976	2788	plugcat556529.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	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	plugcat556529.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	plugcat556529.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.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
2240	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2224	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1976	plugcat556529.exe
1976	plugcat556529.exe
1188	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	plugcat556529.exe
Token: SeDebugPrivilege	1188	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2224	WINWORD.EXE
2224	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2788	2240	EQNEDT32.EXE	33
PID 2240 wrote to memory of 2788	2240	EQNEDT32.EXE	33
PID 2240 wrote to memory of 2788	2240	EQNEDT32.EXE	33
PID 2240 wrote to memory of 2788	2240	EQNEDT32.EXE	33
PID 2224 wrote to memory of 2508	2224	WINWORD.EXE	35
PID 2224 wrote to memory of 2508	2224	WINWORD.EXE	35
PID 2224 wrote to memory of 2508	2224	WINWORD.EXE	35
PID 2224 wrote to memory of 2508	2224	WINWORD.EXE	35
PID 2788 wrote to memory of 1188	2788	plugcat556529.exe	36
PID 2788 wrote to memory of 1188	2788	plugcat556529.exe	36
PID 2788 wrote to memory of 1188	2788	plugcat556529.exe	36
PID 2788 wrote to memory of 1188	2788	plugcat556529.exe	36
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.exe	37
PID 2788 wrote to memory of 1976	2788	plugcat556529.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\SWIFTCOPY-NEOKEM.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:2224
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2508

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:2240
- C:\Users\Admin\AppData\Roaming\plugcat556529.exe
  "C:\Users\Admin\AppData\Roaming\plugcat556529.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\plugcat556529.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:1188
- - C:\Users\Admin\AppData\Roaming\plugcat556529.exe
    "C:\Users\Admin\AppData\Roaming\plugcat556529.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1976

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

\Users\Admin\AppData\Roaming\plugcat556529.exe

Filesize
618KB

MD5
d2c7cc884cbc08d8d05e232e8c65e598

SHA1
73a8e883f694647499e918f567705e6939fea5e7

SHA256
dfe0333e43317bae44de641475b273ac7c5839d9cccfa3b7ddb726d5e224e476

SHA512
f2a3627a1c8369fe3e948b73e9376b115a020e0d9019e83b65382e00d9fa4a9d436e59c7b27efdafb0dbeb5f9f3e51da681de3e90fb56354a91be8d5e08c2150

Download Submit
memory/1976-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-31-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-22-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1976-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1976-33-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2224-2-0x000000007160D000-0x0000000071618000-memory.dmp

Filesize
44KB

Download
memory/2224-0-0x000000002FBA1000-0x000000002FBA2000-memory.dmp

Filesize
4KB

Download
memory/2224-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2224-4-0x000000007160D000-0x0000000071618000-memory.dmp

Filesize
44KB

Download
memory/2788-21-0x0000000005300000-0x0000000005382000-memory.dmp

Filesize
520KB

Download
memory/2788-16-0x00000000002F0000-0x00000000002FE000-memory.dmp

Filesize
56KB

Download
memory/2788-15-0x00000000010B0000-0x000000000114E000-memory.dmp

Filesize
632KB

Download

Analysis

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