agenttesla | 3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0

General

Target

NO7367027738832_789257820.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 1 IoCs

flow	pid	Process
3	2136	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
2856	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2116	bwoidsplug10496.exe
896	bwoidsplug10496.exe

Loads dropped DLL 1 IoCs

pid	Process
2136	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 2116 set thread context of 896	2116	bwoidsplug10496.exe	35

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
2136	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1424	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
896	bwoidsplug10496.exe
896	bwoidsplug10496.exe
2856	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	bwoidsplug10496.exe
Token: SeDebugPrivilege	2856	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1424	WINWORD.EXE
1424	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2116	2136	EQNEDT32.EXE	30
PID 2136 wrote to memory of 2116	2136	EQNEDT32.EXE	30
PID 2136 wrote to memory of 2116	2136	EQNEDT32.EXE	30
PID 2136 wrote to memory of 2116	2136	EQNEDT32.EXE	30
PID 1424 wrote to memory of 2704	1424	WINWORD.EXE	32
PID 1424 wrote to memory of 2704	1424	WINWORD.EXE	32
PID 1424 wrote to memory of 2704	1424	WINWORD.EXE	32
PID 1424 wrote to memory of 2704	1424	WINWORD.EXE	32
PID 2116 wrote to memory of 2856	2116	bwoidsplug10496.exe	33
PID 2116 wrote to memory of 2856	2116	bwoidsplug10496.exe	33
PID 2116 wrote to memory of 2856	2116	bwoidsplug10496.exe	33
PID 2116 wrote to memory of 2856	2116	bwoidsplug10496.exe	33
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35
PID 2116 wrote to memory of 896	2116	bwoidsplug10496.exe	35

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\NO7367027738832_789257820.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:1424
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2704

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:2136
- 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:2116
- - 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:2856
- - 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:896

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
77b411cbab83744ca43bd3c66b9478df

SHA1
6e22e49111da5493a9f0d13a8411bb8413239224

SHA256
a8af19e262cd53f722c11a1b349eacacdae3e5b914ac17e6dab84c9bf298386f

SHA512
f0cef608cd1cda188ad677c16bed96aee966540fa19b252688317a86911f887fa612210bb21ca129dc2766298b9779c6a7a3b5aa8ddd78d4c5c992c0589a5f65

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

Filesize
630KB

MD5
1046de21cd8e9ff519ce5cb089edd5f5

SHA1
14e56d2cdbdfaaa7c49e3b3fed62df2d0f114d83

SHA256
dbda8c6ed6803fd8eeb547a60ee600c101315b478fa055d4a1d0ac438fc45527

SHA512
ba3c69da22314de39a20b458a6c49041b280f5eb283a5225f3b40ee9381ff7fcb037c274a9fc0988cad7432b50c2fc4520221e6fdf5aa0bcc095188d14181d56

Download Submit
memory/896-24-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-18-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-20-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-22-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/896-31-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-27-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/896-29-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1424-16-0x0000000070BED000-0x0000000070BF8000-memory.dmp

Filesize
44KB

Download
memory/1424-0-0x000000002FF31000-0x000000002FF32000-memory.dmp

Filesize
4KB

Download
memory/1424-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1424-50-0x0000000073420000-0x0000000073427000-memory.dmp

Filesize
28KB

Download
memory/1424-2-0x0000000070BED000-0x0000000070BF8000-memory.dmp

Filesize
44KB

Download
memory/1424-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2116-17-0x0000000005350000-0x00000000053D2000-memory.dmp

Filesize
520KB

Download
memory/2116-15-0x0000000000510000-0x0000000000520000-memory.dmp

Filesize
64KB

Download
memory/2116-14-0x0000000000810000-0x00000000008B2000-memory.dmp

Filesize
648KB

Download

Analysis

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