agenttesla | ffcb2695595edb1038f01ac39dc24830d955352ae9880f983ff2e22137357f18

General

Target

Purchase Order.exe
Size

518KB
MD5

8feb32e81b0c570b023e62ccaa62459b
SHA1

1d31d28aceb106ee34ed91e17b7d6b26b5bd4025
SHA256

66a821494ff2c4e9d5dbe663572f4f46df6993b0a661a29cd4a3da18414b9527
SHA512

be8bd41f5ff1b93dd7e8f4171a8158876b9f2db3ad13471ed76a10c57ae89782d45b80d8ccd9a23adda0b5002bc3f97e52ecfbf054838fd01db024c5b65041f8

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.amexworldwide.com
Port:
587
Username:
sujit@amexworldwide.com
Password:
sujit@41#

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1084-64-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1084-65-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1084-66-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1084-67-0x000000000045464E-mapping.dmp	family_agenttesla
behavioral1/memory/1084-69-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1084-71-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

Purchase Order.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Purchase Order.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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Purchase Order.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order.exe

description pid process target process

PID 1304 set thread context of 1084 1304 Purchase Order.exe Purchase Order.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1684 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1744 REG.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Purchase Order.exePurchase Order.exe

pid process

1304 Purchase Order.exe
1304 Purchase Order.exe
1304 Purchase Order.exe
1084 Purchase Order.exe
1084 Purchase Order.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Order.exePurchase Order.exe

description pid process

Token: SeDebugPrivilege 1304 Purchase Order.exe
Token: SeDebugPrivilege 1084 Purchase Order.exe

description	pid	process	target process
PID 1304 set thread context of 1084	1304	Purchase Order.exe	Purchase Order.exe

pid	process
1684	schtasks.exe

pid	process
1744	REG.exe

pid	process
1304	Purchase Order.exe
1304	Purchase Order.exe
1304	Purchase Order.exe
1084	Purchase Order.exe
1084	Purchase Order.exe

description	pid	process
Token: SeDebugPrivilege	1304	Purchase Order.exe
Token: SeDebugPrivilege	1084	Purchase Order.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Purchase Order.exePurchase Order.exe

description	pid	process	target process
PID 1304 wrote to memory of 1684	1304	Purchase Order.exe	schtasks.exe
PID 1304 wrote to memory of 1684	1304	Purchase Order.exe	schtasks.exe
PID 1304 wrote to memory of 1684	1304	Purchase Order.exe	schtasks.exe
PID 1304 wrote to memory of 1684	1304	Purchase Order.exe	schtasks.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1304 wrote to memory of 1084	1304	Purchase Order.exe	Purchase Order.exe
PID 1084 wrote to memory of 1744	1084	Purchase Order.exe	REG.exe
PID 1084 wrote to memory of 1744	1084	Purchase Order.exe	REG.exe
PID 1084 wrote to memory of 1744	1084	Purchase Order.exe	REG.exe
PID 1084 wrote to memory of 1744	1084	Purchase Order.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

outlook_win_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iIShCyNf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3DCC.tmp"
2⤵
- Creates scheduled task(s)
PID:1684

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1084

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:1744

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3DCC.tmp
Filesize
1KB

MD5
163e3fffd374b05aa621d0cfdcc5df93

SHA1
3e5e7b12344c195c36c1f73c0647393768b4b6f6

SHA256
ef3f95d2dd2852292b1f9be939fa4d7d9bc9e0278e109225fbbdc83a9c8ce7e0

SHA512
46971f9dd314d05b271a8af351e26ef644fc7a07e00d35518dee109eec5bba7eb1c04b2fa8423f6dd3c3ee092b192c441edb9a6d45a46bb941ab0a9ea778ee80

Download Submit
memory/1084-67-0x000000000045464E-mapping.dmp

Download
memory/1084-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-71-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-69-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-62-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-65-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-61-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1084-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1304-56-0x0000000000490000-0x000000000049A000-memory.dmp

Filesize
40KB

Download
memory/1304-55-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1304-54-0x0000000000F80000-0x0000000001008000-memory.dmp

Filesize
544KB

Download
memory/1304-58-0x0000000000CA0000-0x0000000000CF8000-memory.dmp

Filesize
352KB

Download
memory/1304-57-0x0000000000560000-0x00000000005CE000-memory.dmp

Filesize
440KB

Download
memory/1684-59-0x0000000000000000-mapping.dmp

Download
memory/1744-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads