agenttesla | 03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 18:32

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General

Target

03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe
Size

616KB
MD5

e94a07c319a7593e95199532bbdb5c99
SHA1

90cb1963b46ec8b51b27e932492c73f15496414a
SHA256

03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7
SHA512

72d36117dcca4652e63ee847ab9a7413201ff855f0b9a906bc48d4cc90310a779a214b02a1b679cfacaea82206ee4b5d8bad99955ed36415543b0678d612ebdf
SSDEEP

12288:RVBob/oNLSVz968w+DZGjvBPW6HdT81GSwYkfJLO5L:RVmLBDZf6H2XwY4O5L

Score

10^/10

agenttesla evasion execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot6813550597:AAGaY-9sRuklR7Vaew4j9pvwVq-T3Fmj5Jg/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe

Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs

resource	yara_rule
behavioral1/memory/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-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/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with or use KoiVM 1 IoCs

resource	yara_rule
behavioral1/memory/2472-3-0x0000000000C50000-0x0000000000CE6000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

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

resource	yara_rule
behavioral1/memory/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-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/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-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/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-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/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2056	powershell.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

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.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
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2472 set thread context of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2056	powershell.exe
2540	regasm.exe
2540	regasm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe
Token: SeDebugPrivilege	2056	powershell.exe
Token: SeDebugPrivilege	2540	regasm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2056	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	28
PID 2472 wrote to memory of 2056	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	28
PID 2472 wrote to memory of 2056	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	28
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2540	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	30
PID 2472 wrote to memory of 2548	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	31
PID 2472 wrote to memory of 2548	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	31
PID 2472 wrote to memory of 2548	2472	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe	31

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe

C:\Users\Admin\AppData\Local\Temp\03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe
"C:\Users\Admin\AppData\Local\Temp\03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2472
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\03f7e2bf4455b9effd710bdc69dfa7f559232731be89deef8070048b994bcad7.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2056
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2540
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2472 -s 600
  2⤵
  PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

memory/2056-9-0x0000000002B20000-0x0000000002BA0000-memory.dmp

Filesize
512KB

Download
memory/2056-10-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2056-11-0x00000000004F0000-0x00000000004F8000-memory.dmp

Filesize
32KB

Download
memory/2472-24-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

Filesize
4KB

Download
memory/2472-1-0x0000000001010000-0x000000000101A000-memory.dmp

Filesize
40KB

Download
memory/2472-2-0x0000000000AE0000-0x0000000000AEA000-memory.dmp

Filesize
40KB

Download
memory/2472-3-0x0000000000C50000-0x0000000000CE6000-memory.dmp

Filesize
600KB

Download
memory/2472-4-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

Filesize
9.9MB

Download
memory/2472-0-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

Filesize
4KB

Download
memory/2472-25-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

Filesize
9.9MB

Download
memory/2540-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-22-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-14-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-12-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2540-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download