agenttesla | 04c7c046518196b6b88e6b3860d870e1ad21728353d8e73f23a9276a1a5e211f

General

Target

8100OJ.exe
Size

1.7MB
MD5

bfbdaa4f58a5fb04b5ebd07df65d794c
SHA1

626c24e885bca21d7da4f74aabb55e1e6b737a76
SHA256

04c7c046518196b6b88e6b3860d870e1ad21728353d8e73f23a9276a1a5e211f
SHA512

5793ce56e85b502d20ab43e7d30b5188063cf743b160c385fe85290522a925ad745e10691513ab7014204d93729c22e275bce76313a33c9d19fcdbad4b1f2847

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-21.dat	family_masslogger
behavioral1/files/0x00030000000131ab-23.dat	family_masslogger
behavioral1/files/0x00030000000131ab-24.dat	family_masslogger
behavioral1/memory/1608-26-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-25-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-27-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-28-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-30-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-29-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-31-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1608-32-0x0000000000000000-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/1608-26-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-25-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-27-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-28-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-30-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-29-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-31-0x0000000000000000-mapping.dmp	family_agenttesla
behavioral1/memory/1608-32-0x0000000000000000-mapping.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1512	wiseman.exe
1608	.exe

Loads dropped DLL 8 IoCs

pid	Process
1124	8100OJ.exe
1124	8100OJ.exe
1124	8100OJ.exe
524	WerFault.exe
524	WerFault.exe
524	WerFault.exe
524	WerFault.exe
524	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
524	1608	WerFault.exe	31

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1124	8100OJ.exe
1512	wiseman.exe
1512	wiseman.exe
1124	8100OJ.exe
1124	8100OJ.exe
1608	.exe
524	WerFault.exe
524	WerFault.exe
524	WerFault.exe
524	WerFault.exe
524	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1124	8100OJ.exe
Token: SeDebugPrivilege	1512	wiseman.exe
Token: SeDebugPrivilege	1608	.exe
Token: SeDebugPrivilege	524	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1512	wiseman.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1124 wrote to memory of 1512	1124	8100OJ.exe	24
PID 1124 wrote to memory of 1512	1124	8100OJ.exe	24
PID 1124 wrote to memory of 1512	1124	8100OJ.exe	24
PID 1124 wrote to memory of 1512	1124	8100OJ.exe	24
PID 1124 wrote to memory of 596	1124	8100OJ.exe	25
PID 1124 wrote to memory of 596	1124	8100OJ.exe	25
PID 1124 wrote to memory of 596	1124	8100OJ.exe	25
PID 1124 wrote to memory of 596	1124	8100OJ.exe	25
PID 596 wrote to memory of 1116	596	cmd.exe	27
PID 596 wrote to memory of 1116	596	cmd.exe	27
PID 596 wrote to memory of 1116	596	cmd.exe	27
PID 596 wrote to memory of 1116	596	cmd.exe	27
PID 1124 wrote to memory of 1608	1124	8100OJ.exe	31
PID 1124 wrote to memory of 1608	1124	8100OJ.exe	31
PID 1124 wrote to memory of 1608	1124	8100OJ.exe	31
PID 1124 wrote to memory of 1608	1124	8100OJ.exe	31
PID 1608 wrote to memory of 524	1608	.exe	34
PID 1608 wrote to memory of 524	1608	.exe	34
PID 1608 wrote to memory of 524	1608	.exe	34
PID 1608 wrote to memory of 524	1608	.exe	34

C:\Users\Admin\AppData\Local\Temp\8100OJ.exe
"C:\Users\Admin\AppData\Local\Temp\8100OJ.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1124
- 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:1512
- 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:596
- - 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:1116
- 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:1608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 732
    3⤵
    - Loads dropped DLL
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:524

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/524-33-0x00000000028A0000-0x00000000028B1000-memory.dmp

Filesize
68KB

Download
memory/524-18-0x0000000001FC0000-0x0000000001FD1000-memory.dmp

Filesize
68KB

Download

Analysis

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