agenttesla | 26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394

General

Target

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
Size

397KB
MD5

30d8b124d51fdb2e5eaeffa3f3866a8a
SHA1

e96071bf6f27a3ceab8faca62efeb22cea272ad6
SHA256

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394
SHA512

7aaf30ba99a40ac2f1df477798f5487fc2e7fd27cce7ed637cf83d16ce645a14e43f0218a70757e267de0c959fae8bbdd4b281bf70c988ba38c392a6ce6138b2

Score

10^/10

agenttesla coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.rbt.co.th
Port:
587
Username:
sale@rbt.co.th
Password:
EV8fUWLv

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/1880-3-0x0000000000540000-0x0000000000542000-memory.dmp	coreentity

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1708-7-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1708-8-0x000000000044B29E-mapping.dmp	family_agenttesla
behavioral1/memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1708-10-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1880-4-0x0000000000D60000-0x0000000000DB1000-memory.dmp	rezer0

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:

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

description	pid	process	target process
PID 1880 set thread context of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.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

1476 schtasks.exe

pid	process
1476	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

pid	process
1708	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
1708	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

description pid process

Token: SeDebugPrivilege 1708 26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

description	pid	process
Token: SeDebugPrivilege	1708	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

description	pid	process	target process
PID 1880 wrote to memory of 1476	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	schtasks.exe
PID 1880 wrote to memory of 1476	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	schtasks.exe
PID 1880 wrote to memory of 1476	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	schtasks.exe
PID 1880 wrote to memory of 1476	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	schtasks.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
PID 1880 wrote to memory of 1708	1880	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe	26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe

C:\Users\Admin\AppData\Local\Temp\26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
"C:\Users\Admin\AppData\Local\Temp\26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1880

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\epuVYVfu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7224.tmp"
2⤵
- Creates scheduled task(s)
PID:1476

C:\Users\Admin\AppData\Local\Temp\26c5098fbb4be4871383a901013288d16a6a2aad7d0952c28fd888e080aea394.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1708

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

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7224.tmp
MD5
3971bef0340c80f9d4a382fa457f8f38

SHA1
3feb40d469678c81f8518869e8ebc7f9da7522a7

SHA256
93c976f1db6fee5749afda172c6d8f6a361b1ec771a860b1944911af7420d5cf

SHA512
22cb9dd119a98b6bf70618c24fc3b7178461d71abfa5f9eb50b2197bb7e5bd925a2b38d50259b8e3d9bd505cae2bf30cfb66c166572b0b4eef7098718342ac94

Download Submit
memory/1476-5-0x0000000000000000-mapping.dmp

Download
memory/1708-7-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1708-8-0x000000000044B29E-mapping.dmp

Download
memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1708-10-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1708-11-0x0000000073CE0000-0x00000000743CE000-memory.dmp

Filesize
6.9MB

Download
memory/1880-0-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/1880-1-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

Filesize
4KB

Download
memory/1880-3-0x0000000000540000-0x0000000000542000-memory.dmp

Filesize
8KB

Download
memory/1880-4-0x0000000000D60000-0x0000000000DB1000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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