agenttesla | 4278e2830a06201c8d2bd5352272fbe141c0c245013a2de2d1b6e221d7b0550d

General

Target

OPLSU19HP4286.gz.exe
Size

598KB
MD5

7a2ea0c3cc1f0c59f5d35a09843ce4f2
SHA1

2b224c79f1392587d91b3e9c379b9a23adc4767d
SHA256

a6599b417be167f4a56b09497a4e42a60305c59b564b872246c2c6a6f368c44a
SHA512

89d867eaa6f51bda727acac536a3e748cbaa1e6eb08d92883b252b361ca100f4cb2acd0dbcf8d5d5e4591adf506c32c2a042b4e6eecd67a45cb2c541ce3002a6

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.ahrass.com
Port:
587
Username:
mohamedadjal@ahrass.com
Password:
chukwuma22

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/1248-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1248-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1248-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1248-67-0x000000000044C9BE-mapping.dmp	family_agenttesla
behavioral1/memory/1248-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1248-71-0x0000000000400000-0x0000000000452000-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/1824-58-0x00000000049F0000-0x0000000004A48000-memory.dmp	rezer0

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

OPLSU19HP4286.gz.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	OPLSU19HP4286.gz.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	OPLSU19HP4286.gz.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	OPLSU19HP4286.gz.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

OPLSU19HP4286.gz.exe

description pid process target process

PID 1824 set thread context of 1248 1824 OPLSU19HP4286.gz.exe OPLSU19HP4286.gz.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

1156 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

OPLSU19HP4286.gz.exeOPLSU19HP4286.gz.exe

pid process

1824 OPLSU19HP4286.gz.exe
1824 OPLSU19HP4286.gz.exe
1824 OPLSU19HP4286.gz.exe
1248 OPLSU19HP4286.gz.exe
1248 OPLSU19HP4286.gz.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OPLSU19HP4286.gz.exeOPLSU19HP4286.gz.exe

description pid process

Token: SeDebugPrivilege 1824 OPLSU19HP4286.gz.exe
Token: SeDebugPrivilege 1248 OPLSU19HP4286.gz.exe

description	pid	process	target process
PID 1824 set thread context of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe

pid	process
1156	schtasks.exe

pid	process
1824	OPLSU19HP4286.gz.exe
1824	OPLSU19HP4286.gz.exe
1824	OPLSU19HP4286.gz.exe
1248	OPLSU19HP4286.gz.exe
1248	OPLSU19HP4286.gz.exe

description	pid	process
Token: SeDebugPrivilege	1824	OPLSU19HP4286.gz.exe
Token: SeDebugPrivilege	1248	OPLSU19HP4286.gz.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

OPLSU19HP4286.gz.exeOPLSU19HP4286.gz.exe

description	pid	process	target process
PID 1824 wrote to memory of 1156	1824	OPLSU19HP4286.gz.exe	schtasks.exe
PID 1824 wrote to memory of 1156	1824	OPLSU19HP4286.gz.exe	schtasks.exe
PID 1824 wrote to memory of 1156	1824	OPLSU19HP4286.gz.exe	schtasks.exe
PID 1824 wrote to memory of 1156	1824	OPLSU19HP4286.gz.exe	schtasks.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1824 wrote to memory of 1248	1824	OPLSU19HP4286.gz.exe	OPLSU19HP4286.gz.exe
PID 1248 wrote to memory of 904	1248	OPLSU19HP4286.gz.exe	netsh.exe
PID 1248 wrote to memory of 904	1248	OPLSU19HP4286.gz.exe	netsh.exe
PID 1248 wrote to memory of 904	1248	OPLSU19HP4286.gz.exe	netsh.exe
PID 1248 wrote to memory of 904	1248	OPLSU19HP4286.gz.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

OPLSU19HP4286.gz.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	OPLSU19HP4286.gz.exe

outlook_win_path 1 IoCs

Processes:

OPLSU19HP4286.gz.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	OPLSU19HP4286.gz.exe

C:\Users\Admin\AppData\Local\Temp\OPLSU19HP4286.gz.exe
"C:\Users\Admin\AppData\Local\Temp\OPLSU19HP4286.gz.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tOJobcOCKeOEZY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9A2E.tmp"
2⤵
- Creates scheduled task(s)
PID:1156

C:\Users\Admin\AppData\Local\Temp\OPLSU19HP4286.gz.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1248

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:904

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

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\tmp9A2E.tmp
Filesize
1KB

MD5
7ddb09e89df6cb1f49078176373cc457

SHA1
1c579f74ae514c0b972df32d666870760cdefad7

SHA256
48fdaa6ced42e3a671dc0388667b380e3be9b5137327d3a28c4787d608ab9ef5

SHA512
f0e4105c32d02ffbc799114cdfd9e6db86e6c027e02a8c4ca49e3fae169de0184c9edae46d92c118309a37fbb5bf20dee8a1d4f6a9595b1bc3b79154126101a2

Download Submit
memory/904-73-0x0000000000000000-mapping.dmp

Download
memory/1156-59-0x0000000000000000-mapping.dmp

Download
memory/1248-67-0x000000000044C9BE-mapping.dmp

Download
memory/1248-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1248-71-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1824-58-0x00000000049F0000-0x0000000004A48000-memory.dmp

Filesize
352KB

Download
memory/1824-57-0x00000000005F0000-0x00000000005F8000-memory.dmp

Filesize
32KB

Download
memory/1824-56-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/1824-54-0x0000000000B00000-0x0000000000B9C000-memory.dmp

Filesize
624KB

Download
memory/1824-55-0x00000000009F0000-0x0000000000A50000-memory.dmp

Filesize
384KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads