agenttesla | 6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2

Analysis

max time kernel
149s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30/05/2024, 01:16

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General

Target

6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe
Size

491KB
MD5

e03150e70ad6d79cf0cdf217429cda61
SHA1

d771aed76e171d6dd3c7f5e2f280fbbde3bb5091
SHA256

6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2
SHA512

f3d105765a186c5c6ab320d8f374a58b71d22fa071d6e0d3caaea0a6162352ac4e93d14707843e710edbe2963e8e63d4fc0bb80bc6e72ab9f013d74286ce4fb0
SSDEEP

12288:0vdsolqcQb7KqhkJ9kmmpkA1W2lhXR7IXjk:RiQh5o0hB7Ak

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

resource	yara_rule
behavioral1/memory/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-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/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

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

resource	yara_rule
behavioral1/memory/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

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

resource	yara_rule
behavioral1/memory/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-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/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-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/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-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/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2660-42-0x00000000007F0000-0x0000000000832000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Loads dropped DLL 1 IoCs

pid	Process
2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.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.

flow	ioc
5	ip-api.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2660	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe
2660	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28

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
2660	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe
2660	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28
PID 2756 wrote to memory of 2660	2756	6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe	28

C:\Users\Admin\AppData\Local\Temp\6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe
"C:\Users\Admin\AppData\Local\Temp\6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe
  "C:\Users\Admin\AppData\Local\Temp\6762d4556e49a9fe0272ca23cb07595e6e7ca6b78d74cd6a8076678031f530f2.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nst2B46.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/2660-38-0x0000000077910000-0x0000000077AB9000-memory.dmp

Filesize
1.7MB

Download
memory/2660-40-0x00000000007F0000-0x0000000001852000-memory.dmp

Filesize
16.4MB

Download
memory/2660-42-0x00000000007F0000-0x0000000000832000-memory.dmp

Filesize
264KB

Download
memory/2660-45-0x0000000077910000-0x0000000077AB9000-memory.dmp

Filesize
1.7MB

Download
memory/2756-35-0x0000000003B70000-0x0000000004E7D000-memory.dmp

Filesize
19.1MB

Download
memory/2756-36-0x0000000077911000-0x0000000077A12000-memory.dmp

Filesize
1.0MB

Download
memory/2756-37-0x0000000077910000-0x0000000077AB9000-memory.dmp

Filesize
1.7MB

Download
memory/2756-39-0x0000000003B70000-0x0000000004E7D000-memory.dmp

Filesize
19.1MB

Download
memory/2756-41-0x0000000003B70000-0x0000000004E7D000-memory.dmp

Filesize
19.1MB

Download