agenttesla | 8b3aa60f494833274c18171586730f2f4650a0c8c2de4cd901d853948b6f1fce

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

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

2

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

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads