agenttesla | 22353112183fd96e23f5a134378ad7856f7a02c064d838a292ef65261ac5a98b

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
28-06-2024 01:12

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General

Target

27062024-322copy.exe
Size

873KB
MD5

a37f4e7d2f3ac6c995f1986fcc9bb48f
SHA1

4e922eccec03db2683096b531801c73227e5ff42
SHA256

76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af
SHA512

2959cca5d24deb57910fdd7ae9baae27c3bd0790868730477391e0a7e42fd8aec21225e902c96e46ccd23c2d3b80f8cb9a43d3d4e545fcd2c1d083564d2869ab
SSDEEP

12288:XcIjd3nQIQsk3na+Qin2At4FhujlTdp6c4TgONNER+NzYCzXBl5GgCWr2mS:XcIjUna3in2o4FulG4ONNi+NBNlY2amS

Score

10^/10

agenttesla guloader downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://mail.hearing-vision.com
Port:
21
Username:
[email protected]
Password:
LILKOOLL14!

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Detect packed .NET executables. Mostly AgentTeslaV4. 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_EXE_Packed_GEN01

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

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

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

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-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

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

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

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

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

Processes:

resource	yara_rule
behavioral1/memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Loads dropped DLL 1 IoCs

Processes:

27062024-322copy.exe

pid process

1656 27062024-322copy.exe
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

5 ip-api.com
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

27062024-322copy.exe

pid process

2644 27062024-322copy.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

27062024-322copy.exe27062024-322copy.exe

pid process

1656 27062024-322copy.exe
2644 27062024-322copy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

27062024-322copy.exe

description pid process target process

PID 1656 set thread context of 2644 1656 27062024-322copy.exe 27062024-322copy.exe
Drops file in Windows directory 1 IoCs

Processes:

27062024-322copy.exe

description ioc process

File opened for modification C:\Windows\reassigned\sandi.ini 27062024-322copy.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

Processes:

27062024-322copy.exe

pid process

2644 27062024-322copy.exe
2644 27062024-322copy.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

27062024-322copy.exe

pid process

1656 27062024-322copy.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

27062024-322copy.exe

description pid process

Token: SeDebugPrivilege 2644 27062024-322copy.exe

pid	process
1656	27062024-322copy.exe

flow	ioc
5	ip-api.com

pid	process
2644	27062024-322copy.exe

pid	process
1656	27062024-322copy.exe
2644	27062024-322copy.exe

description	pid	process	target process
PID 1656 set thread context of 2644	1656	27062024-322copy.exe	27062024-322copy.exe

description	ioc	process
File opened for modification	C:\Windows\reassigned\sandi.ini	27062024-322copy.exe

pid	process
2644	27062024-322copy.exe
2644	27062024-322copy.exe

pid	process
1656	27062024-322copy.exe

description	pid	process
Token: SeDebugPrivilege	2644	27062024-322copy.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

27062024-322copy.exe

description	pid	process	target process
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe
PID 1656 wrote to memory of 2644	1656	27062024-322copy.exe	27062024-322copy.exe

C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe
"C:\Users\Admin\AppData\Local\Temp\27062024-322copy.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:1656

C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe
"C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe"
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2644

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nst1E2D.tmp\System.dll
Filesize
11KB

MD5
55a26d7800446f1373056064c64c3ce8

SHA1
80256857e9a0a9c8897923b717f3435295a76002

SHA256
904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8

SHA512
04b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b

Download Submit
memory/1656-25-0x0000000004020000-0x0000000005A94000-memory.dmp

Filesize
26.5MB

Download
memory/1656-26-0x0000000077B81000-0x0000000077C82000-memory.dmp

Filesize
1.0MB

Download
memory/1656-27-0x0000000077B80000-0x0000000077D29000-memory.dmp

Filesize
1.7MB

Download
memory/1656-30-0x0000000004020000-0x0000000005A94000-memory.dmp

Filesize
26.5MB

Download
memory/2644-28-0x0000000077B80000-0x0000000077D29000-memory.dmp

Filesize
1.7MB

Download
memory/2644-29-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/2644-31-0x00000000004A0000-0x00000000004E2000-memory.dmp

Filesize
264KB

Download
memory/2644-34-0x0000000077B80000-0x0000000077D29000-memory.dmp

Filesize
1.7MB

Download