agenttesla | 2c0859008fe73a3625a925608b420cbbf12edd04ff535e00ebd24bc389bcff19

General

Target

tt copy.exe
Size

470KB
MD5

6f2e9917c711dbae778cd4286d6935ed
SHA1

3798a8576a483a5842f35641c463d112d695dde2
SHA256

da02f9d856038ba614bf9612e387005a4b219fa4d212782e557fe532e638de66
SHA512

07179e6160732d91fcc4c264dfb2e45011f8b19bd21596050cddbe0b95a7f3f978c835fe1f5b8b7c9e617fa2abe66828aee99a6957ce2da0f230a63bf217f98a

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.tolipgoldenplaza.com
Port:
587
Username:
[email protected]
Password:
Golden@#$2019

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1660-56-0x0000000000420000-0x0000000000428000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2044-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2044-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2044-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2044-66-0x000000000044C97E-mapping.dmp	family_agenttesla
behavioral1/memory/2044-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2044-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1660-57-0x00000000049F0000-0x0000000004A48000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

tt copy.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts tt copy.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	tt copy.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

tt copy.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tt copy.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tt copy.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tt copy.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tt copy.exe

description pid process target process

PID 1660 set thread context of 2044 1660 tt copy.exe tt copy.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

1108 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1476 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

tt copy.exett copy.exe

pid process

1660 tt copy.exe
2044 tt copy.exe
2044 tt copy.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tt copy.exett copy.exe

description pid process

Token: SeDebugPrivilege 1660 tt copy.exe
Token: SeDebugPrivilege 2044 tt copy.exe

description	pid	process	target process
PID 1660 set thread context of 2044	1660	tt copy.exe	tt copy.exe

pid	process
1108	schtasks.exe

pid	process
1476	REG.exe

pid	process
1660	tt copy.exe
2044	tt copy.exe
2044	tt copy.exe

description	pid	process
Token: SeDebugPrivilege	1660	tt copy.exe
Token: SeDebugPrivilege	2044	tt copy.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

tt copy.exett copy.exe

description	pid	process	target process
PID 1660 wrote to memory of 1108	1660	tt copy.exe	schtasks.exe
PID 1660 wrote to memory of 1108	1660	tt copy.exe	schtasks.exe
PID 1660 wrote to memory of 1108	1660	tt copy.exe	schtasks.exe
PID 1660 wrote to memory of 1108	1660	tt copy.exe	schtasks.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 1660 wrote to memory of 2044	1660	tt copy.exe	tt copy.exe
PID 2044 wrote to memory of 1476	2044	tt copy.exe	REG.exe
PID 2044 wrote to memory of 1476	2044	tt copy.exe	REG.exe
PID 2044 wrote to memory of 1476	2044	tt copy.exe	REG.exe
PID 2044 wrote to memory of 1476	2044	tt copy.exe	REG.exe
PID 2044 wrote to memory of 1940	2044	tt copy.exe	netsh.exe
PID 2044 wrote to memory of 1940	2044	tt copy.exe	netsh.exe
PID 2044 wrote to memory of 1940	2044	tt copy.exe	netsh.exe
PID 2044 wrote to memory of 1940	2044	tt copy.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

tt copy.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tt copy.exe

outlook_win_path 1 IoCs

Processes:

tt copy.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tt copy.exe

C:\Users\Admin\AppData\Local\Temp\tt copy.exe
"C:\Users\Admin\AppData\Local\Temp\tt copy.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IsZnAGRRI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp87A.tmp"
2⤵
- Creates scheduled task(s)
PID:1108

C:\Users\Admin\AppData\Local\Temp\tt copy.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:2044

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:1476

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1940

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\tmp87A.tmp
Filesize
1KB

MD5
80d24d88a89bcf1c84d98e0473c8fbb8

SHA1
a649332e1dcc43d066a01b8075e6c79ee67193bb

SHA256
4abe7401f374b06cd8f18348c0cafd6f9ee7166120dc4ebe34907878c2e46026

SHA512
ccfdc09ee2a5ffce247ccdfdb2afea2cfb2828474802cdef83fab0774f66d498a9bc02dd931d72e8a9208e62b4b9c12d19c63e2ddaf9ce6fcd99709a08b34a04

Download Submit
memory/1108-58-0x0000000000000000-mapping.dmp

Download
memory/1476-72-0x0000000000000000-mapping.dmp

Download
memory/1660-54-0x0000000000080000-0x00000000000FC000-memory.dmp

Filesize
496KB

Download
memory/1660-55-0x00000000753C1000-0x00000000753C3000-memory.dmp

Filesize
8KB

Download
memory/1660-56-0x0000000000420000-0x0000000000428000-memory.dmp

Filesize
32KB

Download
memory/1660-57-0x00000000049F0000-0x0000000004A48000-memory.dmp

Filesize
352KB

Download
memory/1940-73-0x0000000000000000-mapping.dmp

Download
memory/2044-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-66-0x000000000044C97E-mapping.dmp

Download
memory/2044-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads