agenttesla | 8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce

Analysis

max time kernel
132s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:43

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General

Target

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
Size

46KB
MD5

c34b58d960ea87eec970a9333c7f9292
SHA1

ca23b1d2418edc91a2a49968738ce09a6f7bbfc6
SHA256

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce
SHA512

e1dc12741f2448059aeb99be1f6e0df91bb4ee655b3be892ecc027842e78c39b3388cb5748dbac8b56f8ad245312194159522619b26c6775f558b72245c64aab
SSDEEP

768:LDpDj/nau11+B1Z9wg4MYVctOi3FaKMUXF1x2ySCtk7PHqAk:HpvnaK1+ZWg4MYVcAKMUX/x26qHVk

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.dentallink.com.uy
Port:
587
Username:
[email protected]
Password:
Salvador3274

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.dentallink.com.uy
Port:
587
Username:
[email protected]
Password:
Salvador3274
Email To:
[email protected]

Signatures

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

Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

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
T1552.001
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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bviklyjatzb = "C:\\Users\\Admin\\AppData\\Roaming\\Bviklyjatzb.exe"	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

35 api.ipify.org
36 api.ipify.org
37 ip-api.com

flow	ioc
35	api.ipify.org
36	api.ipify.org
37	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

description	pid	process	target process
PID 1592 set thread context of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

pid	process
4540	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
4540	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

description	pid	process
Token: SeDebugPrivilege	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
Token: SeDebugPrivilege	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
Token: SeDebugPrivilege	4540	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

description	pid	process	target process
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
PID 1592 wrote to memory of 4540	1592	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe	8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe

C:\Users\Admin\AppData\Local\Temp\8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
"C:\Users\Admin\AppData\Local\Temp\8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Users\Admin\AppData\Local\Temp\8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe
  "C:\Users\Admin\AppData\Local\Temp\8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce.exe.log

Filesize
1KB

MD5
489c7565f9b029ba9fadff774073cc98

SHA1
56c05089b33ee7e7dfa9e6a2d098164efd8e1150

SHA256
10bf6242da02dad8b2e1208b9dab9a7303cf986320e05e5ef20b99c9b71326d4

SHA512
ddea09c011a8d4f85905842c2f34c98add0110a0b6b3b2709718c3614a2c42dec5f4f5d5b9442cfd3c6c23e9a90c8c0b25c14c3dbd42faea9cc8dd232cace1ac

Download Submit
memory/1592-0-0x0000000074C8E000-0x0000000074C8F000-memory.dmp

Filesize
4KB

Download
memory/1592-1-0x0000000000420000-0x0000000000432000-memory.dmp

Filesize
72KB

Download
memory/1592-2-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/1592-3-0x0000000005EF0000-0x0000000006122000-memory.dmp

Filesize
2.2MB

Download
memory/1592-9-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-25-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-23-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-45-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-39-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-53-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-57-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-67-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-65-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-64-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-61-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-59-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-55-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-51-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-49-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-47-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-43-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-41-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-37-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-35-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-33-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-31-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-27-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-29-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-21-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-19-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-13-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-7-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-5-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-18-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-16-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-11-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-4-0x0000000005EF0000-0x000000000611C000-memory.dmp

Filesize
2.2MB

Download
memory/1592-4890-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/1592-4892-0x0000000005640000-0x000000000568C000-memory.dmp

Filesize
304KB

Download
memory/1592-4891-0x0000000005560000-0x00000000055CC000-memory.dmp

Filesize
432KB

Download
memory/1592-4893-0x0000000006840000-0x0000000006DE4000-memory.dmp

Filesize
5.6MB

Download
memory/1592-4894-0x0000000005720000-0x0000000005774000-memory.dmp

Filesize
336KB

Download
memory/1592-4899-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/4540-4901-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4540-4900-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/4540-4902-0x0000000004E00000-0x0000000004E66000-memory.dmp

Filesize
408KB

Download
memory/4540-4903-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/4540-4904-0x00000000066B0000-0x000000000674C000-memory.dmp

Filesize
624KB

Download
memory/4540-4905-0x0000000006750000-0x00000000067E2000-memory.dmp

Filesize
584KB

Download
memory/4540-4906-0x0000000006690000-0x000000000669A000-memory.dmp

Filesize
40KB

Download
memory/4540-4907-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download