agenttesla | 7047b9a2b50a8fb360b3d2b53d647582e6b4e93d92b7e266327a01c2f4c4bdf1

General

Target

signed-contract.exe
Size

653KB
MD5

074ca5239f5111224c69bedcc6326cbb
SHA1

af87db11be8d347179e705ada666bbb3ac294087
SHA256

bc96a7521bd576710b531a2b2dd6d7f4b4a0854f6ef8285ec83e0515d27ff299
SHA512

6cea88864bd5451a104308821ad8560141afcdd93615aa270bcdf8412cbd0a4088b550101795f40976077ff7f520d74c169282b1c4c5277e687e12a534bc8f0c

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
9NJSzWzvhDYcb6b

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1100-130-0x0000000000060000-0x000000000010A000-memory.dmp	family_agenttesla
behavioral2/memory/4568-135-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

4568 InstallUtil.exe
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
T1081
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
T1081
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
T1081

pid	process
4568	InstallUtil.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

signed-contract.exe

description pid process target process

PID 1100 set thread context of 4568 1100 signed-contract.exe InstallUtil.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

5000 1100 WerFault.exe signed-contract.exe
4696 1100 WerFault.exe signed-contract.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

signed-contract.exeInstallUtil.exe

pid process

1100 signed-contract.exe
1100 signed-contract.exe
1100 signed-contract.exe
4568 InstallUtil.exe
4568 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

signed-contract.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1100 signed-contract.exe
Token: SeDebugPrivilege 4568 InstallUtil.exe

description	pid	process	target process
PID 1100 set thread context of 4568	1100	signed-contract.exe	InstallUtil.exe

pid	pid_target	process	target process
5000	1100	WerFault.exe	signed-contract.exe
4696	1100	WerFault.exe	signed-contract.exe

pid	process
1100	signed-contract.exe
1100	signed-contract.exe
1100	signed-contract.exe
4568	InstallUtil.exe
4568	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1100	signed-contract.exe
Token: SeDebugPrivilege	4568	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

signed-contract.exe

description	pid	process	target process
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 4568	1100	signed-contract.exe	InstallUtil.exe
PID 1100 wrote to memory of 5000	1100	signed-contract.exe	WerFault.exe
PID 1100 wrote to memory of 5000	1100	signed-contract.exe	WerFault.exe
PID 1100 wrote to memory of 5000	1100	signed-contract.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\signed-contract.exe
"C:\Users\Admin\AppData\Local\Temp\signed-contract.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1100 -s 1336
2⤵
- Program crash
PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1100 -s 1336
2⤵
- Program crash
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1100 -ip 1100
1⤵
PID:4588

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/1100-133-0x0000000006200000-0x0000000006244000-memory.dmp

Filesize
272KB

Download
memory/1100-130-0x0000000000060000-0x000000000010A000-memory.dmp

Filesize
680KB

Download
memory/1100-132-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/1100-131-0x0000000005750000-0x0000000005CF4000-memory.dmp

Filesize
5.6MB

Download
memory/4568-134-0x0000000000000000-mapping.dmp

Download
memory/4568-135-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4568-138-0x0000000005750000-0x00000000057EC000-memory.dmp

Filesize
624KB

Download
memory/4568-140-0x0000000006380000-0x00000000063E6000-memory.dmp

Filesize
408KB

Download
memory/4568-141-0x0000000006A80000-0x0000000006AD0000-memory.dmp

Filesize
320KB

Download
memory/4568-142-0x0000000006A40000-0x0000000006A4A000-memory.dmp

Filesize
40KB

Download
memory/5000-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads