agenttesla | 184f804223ad564aad94a727a9d58543e2d01a308902c95eb328016739938a90

General

Target

E410B98888.exe
Size

1.7MB
MD5

4fb67120185f1f35a4ee966dd8673eb7
SHA1

563837b69516b71eaf64d5bcedf014adbbc45f07
SHA256

184f804223ad564aad94a727a9d58543e2d01a308902c95eb328016739938a90
SHA512

974c0a2e1f41ea34b29fed609ab9765d6d2c5e352263c367078373be1bd9d8a6032cf75e8b0ebf88de6af90df8cc9154a8a1182a43d4804b0bfaeb83adfa3c75

Score

10^/10

agenttesla masslogger keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.ashpraskills.com
Port:
587
Username:
[email protected]
Password:
TC041018$4321

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 16 IoCs

resource	yara_rule
behavioral1/files/0x00030000000131ab-10.dat	family_masslogger
behavioral1/files/0x00030000000131ab-12.dat	family_masslogger
behavioral1/files/0x00030000000131ab-13.dat	family_masslogger
behavioral1/files/0x00030000000131ab-19.dat	family_masslogger
behavioral1/files/0x00030000000131ab-20.dat	family_masslogger
behavioral1/files/0x00030000000131ab-21.dat	family_masslogger
behavioral1/files/0x00030000000131ab-23.dat	family_masslogger
behavioral1/memory/1572-25-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-26-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-27-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-28-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-29-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-30-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-31-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1572-32-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/files/0x00030000000131ab-34.dat	family_masslogger

AgentTesla Payload 12 IoCs

resource	yara_rule
behavioral1/files/0x00040000000131a7-3.dat	family_agenttesla
behavioral1/files/0x00040000000131a7-4.dat	family_agenttesla
behavioral1/files/0x00040000000131a7-6.dat	family_agenttesla
behavioral1/files/0x00040000000131a7-7.dat	family_agenttesla
behavioral1/memory/1572-25-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-26-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-27-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-28-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-29-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-30-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-31-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1572-32-0x0000000000000000-mapping.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1496	wiseman.exe
1572	.exe

Loads dropped DLL 8 IoCs

pid	Process
1088	E410B98888.exe
1088	E410B98888.exe
1088	E410B98888.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe

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

Data from Local System
T1005

Credentials in Files
T1081
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

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Administrator = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\Desktop\\.exe"	reg.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
320	1572	WerFault.exe	31

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1088	E410B98888.exe
1496	wiseman.exe
1496	wiseman.exe
1088	E410B98888.exe
1088	E410B98888.exe
1572	.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	E410B98888.exe
Token: SeDebugPrivilege	1496	wiseman.exe
Token: SeDebugPrivilege	1572	.exe
Token: SeDebugPrivilege	320	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1496	wiseman.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1496	1088	E410B98888.exe	24
PID 1088 wrote to memory of 1496	1088	E410B98888.exe	24
PID 1088 wrote to memory of 1496	1088	E410B98888.exe	24
PID 1088 wrote to memory of 1496	1088	E410B98888.exe	24
PID 1088 wrote to memory of 540	1088	E410B98888.exe	25
PID 1088 wrote to memory of 540	1088	E410B98888.exe	25
PID 1088 wrote to memory of 540	1088	E410B98888.exe	25
PID 1088 wrote to memory of 540	1088	E410B98888.exe	25
PID 540 wrote to memory of 1028	540	cmd.exe	27
PID 540 wrote to memory of 1028	540	cmd.exe	27
PID 540 wrote to memory of 1028	540	cmd.exe	27
PID 540 wrote to memory of 1028	540	cmd.exe	27
PID 1088 wrote to memory of 1572	1088	E410B98888.exe	31
PID 1088 wrote to memory of 1572	1088	E410B98888.exe	31
PID 1088 wrote to memory of 1572	1088	E410B98888.exe	31
PID 1088 wrote to memory of 1572	1088	E410B98888.exe	31
PID 1572 wrote to memory of 320	1572	.exe	34
PID 1572 wrote to memory of 320	1572	.exe	34
PID 1572 wrote to memory of 320	1572	.exe	34
PID 1572 wrote to memory of 320	1572	.exe	34

C:\Users\Admin\AppData\Local\Temp\E410B98888.exe
"C:\Users\Admin\AppData\Local\Temp\E410B98888.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\Desktop\wiseman.exe
  "C:\Users\Admin\Desktop\wiseman.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v Administrator /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:540
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v Administrator /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\.exe"
    3⤵
    - Adds Run key to start application
    PID:1028
- C:\Users\Admin\Desktop\.exe
  "C:\Users\Admin\Desktop\.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1572 -s 732
    3⤵
    - Loads dropped DLL
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:320

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/320-33-0x00000000027F0000-0x0000000002801000-memory.dmp

Filesize
68KB

Download
memory/320-18-0x0000000001FB0000-0x0000000001FC1000-memory.dmp

Filesize
68KB

Download

Analysis

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