agenttesla | ff381206a1238989b8dbe353753efb3171ac22ff59cd8b70d6e0f96a2dccc218

General

Target

T.T.Remittance schedule.exe
Size

633KB
MD5

89f103f080f90d7254cfbef4332e8153
SHA1

6cc38d5131e33dac4e3d276186ecc6c8cba549ca
SHA256

9075d56174383d598e32b3d10e6cfbad3599b7db8a1478f4a55d3067f4c05e8d
SHA512

c016716864496b2db57b76f37ac41a65dfea7799b195a7f966a7ae2d849d1e6438eb99a31d0db402d2101fc04e54a0f54fb9afb8aa1e3df55cf63767080417c3

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
company1960

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/524-64-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/524-65-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/524-66-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/524-67-0x00000000004536CE-mapping.dmp	family_agenttesla
behavioral1/memory/524-69-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/524-71-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

T.T.Remittance schedule.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	T.T.Remittance schedule.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	T.T.Remittance schedule.exe

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

T.T.Remittance schedule.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	T.T.Remittance schedule.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	T.T.Remittance schedule.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	T.T.Remittance schedule.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

T.T.Remittance schedule.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	T.T.Remittance schedule.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	T.T.Remittance schedule.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

T.T.Remittance schedule.exe

description pid process target process

PID 960 set thread context of 524 960 T.T.Remittance schedule.exe T.T.Remittance schedule.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

1564 schtasks.exe

description	pid	process	target process
PID 960 set thread context of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe

pid	process
1564	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

T.T.Remittance schedule.exeT.T.Remittance schedule.exe

pid	process
960	T.T.Remittance schedule.exe
960	T.T.Remittance schedule.exe
960	T.T.Remittance schedule.exe
524	T.T.Remittance schedule.exe
524	T.T.Remittance schedule.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

T.T.Remittance schedule.exeT.T.Remittance schedule.exe

description pid process

Token: SeDebugPrivilege 960 T.T.Remittance schedule.exe
Token: SeDebugPrivilege 524 T.T.Remittance schedule.exe

description	pid	process
Token: SeDebugPrivilege	960	T.T.Remittance schedule.exe
Token: SeDebugPrivilege	524	T.T.Remittance schedule.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

T.T.Remittance schedule.exe

description	pid	process	target process
PID 960 wrote to memory of 1564	960	T.T.Remittance schedule.exe	schtasks.exe
PID 960 wrote to memory of 1564	960	T.T.Remittance schedule.exe	schtasks.exe
PID 960 wrote to memory of 1564	960	T.T.Remittance schedule.exe	schtasks.exe
PID 960 wrote to memory of 1564	960	T.T.Remittance schedule.exe	schtasks.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe
PID 960 wrote to memory of 524	960	T.T.Remittance schedule.exe	T.T.Remittance schedule.exe

outlook_office_path 1 IoCs

Processes:

T.T.Remittance schedule.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	T.T.Remittance schedule.exe

outlook_win_path 1 IoCs

Processes:

T.T.Remittance schedule.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	T.T.Remittance schedule.exe

C:\Users\Admin\AppData\Local\Temp\T.T.Remittance schedule.exe
"C:\Users\Admin\AppData\Local\Temp\T.T.Remittance schedule.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\coRqIpPhQFPQV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D33.tmp"
2⤵
- Creates scheduled task(s)
PID:1564

C:\Users\Admin\AppData\Local\Temp\T.T.Remittance schedule.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

2

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8D33.tmp

Filesize
1KB

MD5
563734f153904fe184c320719bff6cd6

SHA1
ce839715447725115817ba260d0c6966199a57de

SHA256
56611389c5b31eafa868d10c2efa61852fc5a1e6748dd1e460d65dd6148efa5a

SHA512
e21af67faca609e072ed195a5758326449cb52d76caaa1095f0629dc5a1fec64447b13b3ffefe7f4e4e8d479d8a63234fe73d5a22c368a820dfddea7f417a630

Download Submit
memory/524-64-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-66-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-71-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-69-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-67-0x00000000004536CE-mapping.dmp

Download
memory/524-65-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-61-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/524-62-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/960-54-0x0000000000A90000-0x0000000000B34000-memory.dmp

Filesize
656KB

Download
memory/960-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

Download
memory/960-56-0x0000000000460000-0x000000000046C000-memory.dmp

Filesize
48KB

Download
memory/960-58-0x000000000B7A0000-0x000000000B81C000-memory.dmp

Filesize
496KB

Download
memory/960-57-0x0000000006030000-0x00000000060C2000-memory.dmp

Filesize
584KB

Download
memory/1564-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads