agenttesla | 3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0

General

Target

3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0.rtf
Size

642KB
MD5

b16595c7c02434cb4e95e46eaa864262
SHA1

d9ed513e1cc6a3538c12fb404ff576c32028a3bd
SHA256

3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0
SHA512

9b362dab6d79482201b789eb12335f3a9cc0e30663e63cd40ff169084ec4284cf957914f40b5e15f75215e19194dc84c3a24462bc39383e79dc626dcb11a1e9e
SSDEEP

6144:ewAYwAYwAg+bU29khgINRyJT8cai2+QurA0nI:n9

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
3	2836	EQNEDT32.EXE
5	2836	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
2968	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
448	bwoidsplug10496.exe
1588	bwoidsplug10496.exe

Loads dropped DLL 1 IoCs

pid	Process
2836	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 448 set thread context of 1588	448	bwoidsplug10496.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	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bwoidsplug10496.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bwoidsplug10496.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2836	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2756	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1588	bwoidsplug10496.exe
1588	bwoidsplug10496.exe
2968	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	bwoidsplug10496.exe
Token: SeDebugPrivilege	2968	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2756	WINWORD.EXE
2756	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 448	2836	EQNEDT32.EXE	32
PID 2836 wrote to memory of 448	2836	EQNEDT32.EXE	32
PID 2836 wrote to memory of 448	2836	EQNEDT32.EXE	32
PID 2836 wrote to memory of 448	2836	EQNEDT32.EXE	32
PID 2756 wrote to memory of 540	2756	WINWORD.EXE	34
PID 2756 wrote to memory of 540	2756	WINWORD.EXE	34
PID 2756 wrote to memory of 540	2756	WINWORD.EXE	34
PID 2756 wrote to memory of 540	2756	WINWORD.EXE	34
PID 448 wrote to memory of 2968	448	bwoidsplug10496.exe	35
PID 448 wrote to memory of 2968	448	bwoidsplug10496.exe	35
PID 448 wrote to memory of 2968	448	bwoidsplug10496.exe	35
PID 448 wrote to memory of 2968	448	bwoidsplug10496.exe	35
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.exe	37
PID 448 wrote to memory of 1588	448	bwoidsplug10496.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\3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0.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:2756
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:540

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:2836
- C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe
  "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:448
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.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:2968
- - C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe
    "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1588

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
e0b837e7e7f2e9a1bd83116d311bd7c7

SHA1
40042a57a860da9401c9e9a0165b68cb5ceefff3

SHA256
4492097f134b2af3b8624b8b83c3f011db6fb58b3b72dd645354e91c5084dbd8

SHA512
ffd37592658b9da51825331e3962f5f1880c99dd489eb1d786169c8038ff082d21529a1c6f8ce9821b2d87f485724e11d1c0778cb3a49eb01c172781fc9f2028

Download Submit
\Users\Admin\AppData\Roaming\bwoidsplug10496.exe

Filesize
630KB

MD5
1046de21cd8e9ff519ce5cb089edd5f5

SHA1
14e56d2cdbdfaaa7c49e3b3fed62df2d0f114d83

SHA256
dbda8c6ed6803fd8eeb547a60ee600c101315b478fa055d4a1d0ac438fc45527

SHA512
ba3c69da22314de39a20b458a6c49041b280f5eb283a5225f3b40ee9381ff7fcb037c274a9fc0988cad7432b50c2fc4520221e6fdf5aa0bcc095188d14181d56

Download Submit
memory/448-15-0x0000000000240000-0x00000000002E2000-memory.dmp

Filesize
648KB

Download
memory/448-21-0x00000000056A0000-0x0000000005722000-memory.dmp

Filesize
520KB

Download
memory/448-16-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/1588-34-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-28-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-22-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-33-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-31-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1588-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1588-26-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2756-4-0x00000000711BD000-0x00000000711C8000-memory.dmp

Filesize
44KB

Download
memory/2756-0-0x000000002FD61000-0x000000002FD62000-memory.dmp

Filesize
4KB

Download
memory/2756-2-0x00000000711BD000-0x00000000711C8000-memory.dmp

Filesize
44KB

Download
memory/2756-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2756-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2756-58-0x00000000711BD000-0x00000000711C8000-memory.dmp

Filesize
44KB

Download

Analysis

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