agenttesla | 4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227

General

Target

SWIFT DETAILS-ERROR.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
3	2252	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
2400	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1708	plugfkg79.exe
1376	plugfkg79.exe

Loads dropped DLL 1 IoCs

pid	Process
2252	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 1708 set thread context of 1376	1708	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	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

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
2252	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1920	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1376	plugfkg79.exe
1376	plugfkg79.exe
2400	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1376	plugfkg79.exe
Token: SeDebugPrivilege	2400	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1920	WINWORD.EXE
1920	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1708	2252	EQNEDT32.EXE	32
PID 2252 wrote to memory of 1708	2252	EQNEDT32.EXE	32
PID 2252 wrote to memory of 1708	2252	EQNEDT32.EXE	32
PID 2252 wrote to memory of 1708	2252	EQNEDT32.EXE	32
PID 1920 wrote to memory of 2104	1920	WINWORD.EXE	34
PID 1920 wrote to memory of 2104	1920	WINWORD.EXE	34
PID 1920 wrote to memory of 2104	1920	WINWORD.EXE	34
PID 1920 wrote to memory of 2104	1920	WINWORD.EXE	34
PID 1708 wrote to memory of 2400	1708	plugfkg79.exe	35
PID 1708 wrote to memory of 2400	1708	plugfkg79.exe	35
PID 1708 wrote to memory of 2400	1708	plugfkg79.exe	35
PID 1708 wrote to memory of 2400	1708	plugfkg79.exe	35
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	plugfkg79.exe	37
PID 1708 wrote to memory of 1376	1708	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\SWIFT DETAILS-ERROR.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:1920
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2104

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:2252
- 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:1708
- - 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:2400
- - 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:1376

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
639ea719185d7dadc421c99bc689d020

SHA1
7688c895cae3f36a0abf07bcda961c1ba4368036

SHA256
2fd00312a04d190eff9a933c9aeedbdb65324425039151ccd8b13dc92b919643

SHA512
0a5bda11d1d899b11d0965e9e56783103f08b388b1ffaecc708b4d7c0ccd653c8494b0f6e4a701d626be29fe239f99ef42cd7cc3c888fe5804d1411375c9b430

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

Filesize
755KB

MD5
49a1b7551dcb6332880de16b36be8015

SHA1
f14439e569ab7bdde5f50e1a430fdfc150fd45d2

SHA256
8722d9be017fd945c9ace288f405051fd8ced8c141cadf680448d4e6cd5bf8ac

SHA512
a4d88e90e5aa53eb9d07b3527e1c4835c0a1cc2f2566a941da6e73cc1ded4c365faada34cf8cb632e2d4d2bce285f2b964962e944ad5fcb31cb9ebc8c1a1c940

Download Submit
memory/1376-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-30-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1376-33-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1376-36-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1708-22-0x000000006B1FE000-0x000000006B1FF000-memory.dmp

Filesize
4KB

Download
memory/1708-23-0x0000000005330000-0x00000000053B2000-memory.dmp

Filesize
520KB

Download
memory/1708-16-0x0000000000540000-0x0000000000550000-memory.dmp

Filesize
64KB

Download
memory/1708-15-0x0000000000CC0000-0x0000000000D7E000-memory.dmp

Filesize
760KB

Download
memory/1708-13-0x000000006B1FE000-0x000000006B1FF000-memory.dmp

Filesize
4KB

Download
memory/1920-2-0x000000007118D000-0x0000000071198000-memory.dmp

Filesize
44KB

Download
memory/1920-0-0x000000002F0B1000-0x000000002F0B2000-memory.dmp

Filesize
4KB

Download
memory/1920-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1920-60-0x000000007118D000-0x0000000071198000-memory.dmp

Filesize
44KB

Download
memory/1920-59-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

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