agenttesla | 76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25

Analysis

max time kernel
148s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 02:54

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General

Target

76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe
Size

780KB
MD5

13d388f4fe68a40f09346acb5aca5bbc
SHA1

d8941b604dcd378532fb4362f878e43c11cca491
SHA256

76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25
SHA512

40eb0639bd678bbcca68dc3b48b0b01b99450344d7a084a25589ee605c4bbc99bf448d62678a961baf345ad0f7cc8586a47a45d3767fe1d0eec4f236255f50d4
SSDEEP

12288:ebFQCaDC1E5HNyrjAHyKTB7wln9vi/9aV+jf3igDiOlymYSmPAQt1lsZC:eb4cnIyKdEe97fni+y+moAbGC

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
12345asdfg@@@@@
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. 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables referencing Windows vault credential objects. Observed in infostealers 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-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 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Loads dropped DLL 1 IoCs

pid	Process
2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

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

Data from Local System
T1005

Credentials In Files
T1552.001
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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Laet = "C:\\Users\\Admin\\AppData\\Roaming\\Anthropoidal\\Politimssigt.exe"	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

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
5	api.ipify.org
6	api.ipify.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2952	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe
2952	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2124 set thread context of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\daysmen.dia	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2952	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe
2952	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30
PID 2124 wrote to memory of 2952	2124	76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe	30

C:\Users\Admin\AppData\Local\Temp\76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe
"C:\Users\Admin\AppData\Local\Temp\76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe
  "C:\Users\Admin\AppData\Local\Temp\76b2ad6694d96a44a96db9fb25dac7da1ab70a174be812b78fcfe5dc048eba25.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2952

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsd3802.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/2124-22-0x0000000076DB0000-0x0000000076F59000-memory.dmp

Filesize
1.7MB

Download
memory/2124-23-0x0000000076FA0000-0x0000000077076000-memory.dmp

Filesize
856KB

Download
memory/2124-24-0x0000000074690000-0x0000000074697000-memory.dmp

Filesize
28KB

Download
memory/2952-25-0x0000000076DB0000-0x0000000076F59000-memory.dmp

Filesize
1.7MB

Download
memory/2952-26-0x0000000076FD6000-0x0000000076FD7000-memory.dmp

Filesize
4KB

Download
memory/2952-27-0x0000000076FA0000-0x0000000077076000-memory.dmp

Filesize
856KB

Download
memory/2952-30-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/2952-32-0x00000000004A0000-0x00000000004E0000-memory.dmp

Filesize
256KB

Download
memory/2952-33-0x00000000737E0000-0x0000000073ECE000-memory.dmp

Filesize
6.9MB

Download
memory/2952-36-0x00000000737E0000-0x0000000073ECE000-memory.dmp

Filesize
6.9MB

Download