agenttesla | 48c9d6d694174cbbf4f1d52905fab281e1fde291d1d4fbb4db8c97b7ff232cc9

General

Target

S_0100388490101_05_07_20.exe
Size

485KB
MD5

e705f67dbef2339a4658d9132dcd9477
SHA1

a85bb77015bf5e27e52ce1ee464c65cfb69ebd46
SHA256

48c9d6d694174cbbf4f1d52905fab281e1fde291d1d4fbb4db8c97b7ff232cc9
SHA512

f68e1cb2757f98a6d98156d59352bc9529f54c29064db6db1b876036f287e4b68e7a0e7308d8d3cdfa555b3ce5119b305928ec97b75a212a983682588c88de6c

Score

10^/10

agenttesla coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.reacsa.com.mx
Port:
587
Username:
sucursal_puebla@reacsa.com.mx
Password:
(MzImXmp2u)!

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.reacsa.com.mx
Port:
587
Username:
sucursal_puebla@reacsa.com.mx
Password:
(MzImXmp2u)!

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
behavioral2/memory/1036-7-0x00000000015C0000-0x00000000015C3000-memory.dmp	coreentity

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1424-12-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/1424-13-0x000000000044A67E-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral2/memory/1036-8-0x000000000A220000-0x000000000A271000-memory.dmp	rezer0

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

S_0100388490101_05_07_20.exe

description pid process target process

PID 1036 set thread context of 1424 1036 S_0100388490101_05_07_20.exe S_0100388490101_05_07_20.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

1236 schtasks.exe

description	pid	process	target process
PID 1036 set thread context of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe

pid	process
1236	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

S_0100388490101_05_07_20.exeS_0100388490101_05_07_20.exe

pid	process
1036	S_0100388490101_05_07_20.exe
1036	S_0100388490101_05_07_20.exe
1036	S_0100388490101_05_07_20.exe
1036	S_0100388490101_05_07_20.exe
1424	S_0100388490101_05_07_20.exe
1424	S_0100388490101_05_07_20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

S_0100388490101_05_07_20.exeS_0100388490101_05_07_20.exe

description pid process

Token: SeDebugPrivilege 1036 S_0100388490101_05_07_20.exe
Token: SeDebugPrivilege 1424 S_0100388490101_05_07_20.exe

description	pid	process
Token: SeDebugPrivilege	1036	S_0100388490101_05_07_20.exe
Token: SeDebugPrivilege	1424	S_0100388490101_05_07_20.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

S_0100388490101_05_07_20.exeS_0100388490101_05_07_20.exe

description	pid	process	target process
PID 1036 wrote to memory of 1236	1036	S_0100388490101_05_07_20.exe	schtasks.exe
PID 1036 wrote to memory of 1236	1036	S_0100388490101_05_07_20.exe	schtasks.exe
PID 1036 wrote to memory of 1236	1036	S_0100388490101_05_07_20.exe	schtasks.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1036 wrote to memory of 1424	1036	S_0100388490101_05_07_20.exe	S_0100388490101_05_07_20.exe
PID 1424 wrote to memory of 2120	1424	S_0100388490101_05_07_20.exe	netsh.exe
PID 1424 wrote to memory of 2120	1424	S_0100388490101_05_07_20.exe	netsh.exe
PID 1424 wrote to memory of 2120	1424	S_0100388490101_05_07_20.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\S_0100388490101_05_07_20.exe
"C:\Users\Admin\AppData\Local\Temp\S_0100388490101_05_07_20.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1036

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sRpBGOaliL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6900.tmp"
2⤵
- Creates scheduled task(s)
PID:1236

C:\Users\Admin\AppData\Local\Temp\S_0100388490101_05_07_20.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:2120

Network

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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\S_0100388490101_05_07_20.exe.log
MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6900.tmp
MD5
86739f0cc1a38b6d652f6eab52c978ba

SHA1
243cfaaf18b786be149384ef8cf3462ed3d08f20

SHA256
a86800d3af8eccbb53f80a34d2d8e99f992ee3961998bc837e57c3a8167a1097

SHA512
8d8a890db0f970d0f3cdc4907e7137a72b143a136e74956d384cbb11ea9d9896a7c85e52f98e562d1e678fd5074647a862b0966b885613e013206b7a3b3af76c

Download Submit
memory/1036-9-0x000000000A320000-0x000000000A321000-memory.dmp

Filesize
4KB

Download
memory/1036-1-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/1036-5-0x0000000007EA0000-0x0000000007EA1000-memory.dmp

Filesize
4KB

Download
memory/1036-6-0x0000000007E30000-0x0000000007E31000-memory.dmp

Filesize
4KB

Download
memory/1036-7-0x00000000015C0000-0x00000000015C3000-memory.dmp

Filesize
12KB

Download
memory/1036-8-0x000000000A220000-0x000000000A271000-memory.dmp

Filesize
324KB

Download
memory/1036-0-0x0000000073290000-0x000000007397E000-memory.dmp

Filesize
6.9MB

Download
memory/1036-4-0x00000000081C0000-0x00000000081C1000-memory.dmp

Filesize
4KB

Download
memory/1036-3-0x0000000005400000-0x0000000005458000-memory.dmp

Filesize
352KB

Download
memory/1236-10-0x0000000000000000-mapping.dmp

Download
memory/1424-13-0x000000000044A67E-mapping.dmp

Download
memory/1424-12-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1424-15-0x0000000073290000-0x000000007397E000-memory.dmp

Filesize
6.9MB

Download
memory/1424-20-0x0000000005E20000-0x0000000005E21000-memory.dmp

Filesize
4KB

Download
memory/1424-21-0x0000000006410000-0x0000000006411000-memory.dmp

Filesize
4KB

Download
memory/2120-22-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads