agenttesla | 1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4

General

Target

1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
Size

620KB
MD5

bb8bbd61f7f45c48819489caa8bb627b
SHA1

5022b614e9c8ce0f38ada867f1fd1e243cf0f464
SHA256

1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4
SHA512

00f7d1e67a6400f6acc5fb8f228b0506dd2b8eb3d93c9b13beffee20d9a236cfebaaca27a1cc1d91b1c03e9d920da42702d8aebac0e40a8e8b80a7de1cc724c3
SSDEEP

12288:RMxSUX4pZeTHJI4RfJfvZT2RXt5Ehizw8GGcFSm1XVfE9frqw9h:RNUX4pMHJI4LJ2RXt5SGZm/fYjqSh

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.drconstrucciones.es
Port:
587
Username:
[email protected]
Password:
Lagoness2
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. 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with or use KoiVM 1 IoCs

resource	yara_rule
behavioral1/memory/2236-4-0x000000001AEC0000-0x000000001AF54000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-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 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs

resource	yara_rule
behavioral1/memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	api.ipify.org
3	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2236 set thread context of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2000	CasPol.exe
2000	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
Token: SeDebugPrivilege	2000	CasPol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2000	CasPol.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2000	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	28
PID 2236 wrote to memory of 2996	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	29
PID 2236 wrote to memory of 2996	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	29
PID 2236 wrote to memory of 2996	2236	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	29

C:\Users\Admin\AppData\Local\Temp\1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
"C:\Users\Admin\AppData\Local\Temp\1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2000
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2236 -s 636
  2⤵
  PID:2996

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2000-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-7-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-24-0x0000000074250000-0x000000007493E000-memory.dmp

Filesize
6.9MB

Download
memory/2000-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2000-23-0x000000007425E000-0x000000007425F000-memory.dmp

Filesize
4KB

Download
memory/2000-5-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-20-0x0000000074250000-0x000000007493E000-memory.dmp

Filesize
6.9MB

Download
memory/2000-14-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2000-19-0x000000007425E000-0x000000007425F000-memory.dmp

Filesize
4KB

Download
memory/2000-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2236-0-0x000007FEF5483000-0x000007FEF5484000-memory.dmp

Filesize
4KB

Download
memory/2236-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2236-1-0x0000000000AD0000-0x0000000000AE0000-memory.dmp

Filesize
64KB

Download
memory/2236-21-0x000007FEF5483000-0x000007FEF5484000-memory.dmp

Filesize
4KB

Download
memory/2236-22-0x000007FEF5480000-0x000007FEF5E6C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-4-0x000000001AEC0000-0x000000001AF54000-memory.dmp

Filesize
592KB

Download
memory/2236-2-0x000007FEF5480000-0x000007FEF5E6C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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