agenttesla | 4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227

General

Target

4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227.rtf
Size

1011KB
MD5

4d6c7b93c085f50060e99dba63ef5e27
SHA1

f67de698fd8eb036b8e83211880d1c449fe6f7e2
SHA256

4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227
SHA512

e7f1c409b67a4070c16078037ecd1d2992543918bf728508bf610a2c1f3626ffbc0ea5efae92798765269f65a39ce7c11078a496f900e46df1a2b77eb21c3361
SSDEEP

6144:6wAYwA9WMyBtBWojqJnnR30lOGXdUz4+2:Bu

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	2100	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
2288	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2772	plugfkg79.exe
2612	plugfkg79.exe

Loads dropped DLL 1 IoCs

pid	Process
2100	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 2772 set thread context of 2612	2772	plugfkg79.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	plugfkg79.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	plugfkg79.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
2100	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2068	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2612	plugfkg79.exe
2612	plugfkg79.exe
2288	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	plugfkg79.exe
Token: SeDebugPrivilege	2288	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2068	WINWORD.EXE
2068	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2772	2100	EQNEDT32.EXE	33
PID 2100 wrote to memory of 2772	2100	EQNEDT32.EXE	33
PID 2100 wrote to memory of 2772	2100	EQNEDT32.EXE	33
PID 2100 wrote to memory of 2772	2100	EQNEDT32.EXE	33
PID 2068 wrote to memory of 2624	2068	WINWORD.EXE	35
PID 2068 wrote to memory of 2624	2068	WINWORD.EXE	35
PID 2068 wrote to memory of 2624	2068	WINWORD.EXE	35
PID 2068 wrote to memory of 2624	2068	WINWORD.EXE	35
PID 2772 wrote to memory of 2288	2772	plugfkg79.exe	36
PID 2772 wrote to memory of 2288	2772	plugfkg79.exe	36
PID 2772 wrote to memory of 2288	2772	plugfkg79.exe	36
PID 2772 wrote to memory of 2288	2772	plugfkg79.exe	36
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.exe	37
PID 2772 wrote to memory of 2612	2772	plugfkg79.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\4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227.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:2068
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2624

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:2100
- C:\Users\Admin\AppData\Roaming\plugfkg79.exe
  "C:\Users\Admin\AppData\Roaming\plugfkg79.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\plugfkg79.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:2288
- - C:\Users\Admin\AppData\Roaming\plugfkg79.exe
    "C:\Users\Admin\AppData\Roaming\plugfkg79.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2612

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
362f8fcc72188b704093489bfb3598d8

SHA1
7bccacc9f5013836b4690e6c9cf25610ba40b63d

SHA256
42d7e1cd9a190d7007b4e852a71aacc4f7cd9827a9f6f284e767ad296d193c2c

SHA512
9de2c9516a27dc198eab4756e422414c6ed9b8031853ff4744ebc74f5d709fd5ba6c8b2578c510b1b8ec80ec7f164f241f8642ebab3f11f46224541c2a1968d9

Download Submit
\Users\Admin\AppData\Roaming\plugfkg79.exe

Filesize
755KB

MD5
49a1b7551dcb6332880de16b36be8015

SHA1
f14439e569ab7bdde5f50e1a430fdfc150fd45d2

SHA256
8722d9be017fd945c9ace288f405051fd8ced8c141cadf680448d4e6cd5bf8ac

SHA512
a4d88e90e5aa53eb9d07b3527e1c4835c0a1cc2f2566a941da6e73cc1ded4c365faada34cf8cb632e2d4d2bce285f2b964962e944ad5fcb31cb9ebc8c1a1c940

Download Submit
memory/2068-21-0x00000000713AD000-0x00000000713B8000-memory.dmp

Filesize
44KB

Download
memory/2068-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2068-2-0x00000000713AD000-0x00000000713B8000-memory.dmp

Filesize
44KB

Download
memory/2068-59-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2068-0-0x000000002FDD1000-0x000000002FDD2000-memory.dmp

Filesize
4KB

Download
memory/2612-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-33-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-30-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2612-36-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2772-22-0x000000006B52E000-0x000000006B52F000-memory.dmp

Filesize
4KB

Download
memory/2772-23-0x0000000005320000-0x00000000053A2000-memory.dmp

Filesize
520KB

Download
memory/2772-16-0x0000000000450000-0x0000000000460000-memory.dmp

Filesize
64KB

Download
memory/2772-15-0x0000000000D20000-0x0000000000DDE000-memory.dmp

Filesize
760KB

Download
memory/2772-13-0x000000006B52E000-0x000000006B52F000-memory.dmp

Filesize
4KB

Download

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