agenttesla | ad83f4a4563b94420182654f956f45c6555d88c4fb0392dbe73df0eeafbdfc17

General

Target

JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
Size

1.1MB
MD5

c91f24fcf484e59d3ab03e707144459a
SHA1

9b21351158fc241ecc52a51beca027c1162694d6
SHA256

ad83f4a4563b94420182654f956f45c6555d88c4fb0392dbe73df0eeafbdfc17
SHA512

14cae63fa00235b8300e3fbf9dd71ba45692e5de692e2ab418f647a43de81de6272491b31ad7af5d4e5ad9236749c800e3eb83971d77491047eda428b0a000b7
SSDEEP

24576:2WFOBswlL1xA5UvIp14xwmgHUegCbhS9ZKQ9PgRAMg:WBswLi5uIp14xwnURscrKQ9PgKM

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
zxcvbnm12345

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/1420-11-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nwlrFL = "C:\\Users\\Admin\\AppData\\Roaming\\nwlrFL\\nwlrFL.exe"	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1600 set thread context of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1420	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
1420	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90
PID 1600 wrote to memory of 1420	1600	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\JaffaCakes118_c91f24fcf484e59d3ab03e707144459a.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1420-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1420-24-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1420-23-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1420-22-0x0000000001360000-0x00000000013B0000-memory.dmp

Filesize
320KB

Download
memory/1420-20-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1420-19-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1420-18-0x0000000006220000-0x0000000006286000-memory.dmp

Filesize
408KB

Download
memory/1420-17-0x00000000055B0000-0x00000000055C8000-memory.dmp

Filesize
96KB

Download
memory/1420-16-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1420-14-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1600-5-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1600-10-0x0000000007110000-0x00000000071F2000-memory.dmp

Filesize
904KB

Download
memory/1600-9-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1600-15-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1600-8-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/1600-7-0x00000000057B0000-0x00000000057BA000-memory.dmp

Filesize
40KB

Download
memory/1600-6-0x0000000006BD0000-0x0000000006C6C000-memory.dmp

Filesize
624KB

Download
memory/1600-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/1600-4-0x0000000003030000-0x000000000303A000-memory.dmp

Filesize
40KB

Download
memory/1600-3-0x0000000005490000-0x0000000005522000-memory.dmp

Filesize
584KB

Download
memory/1600-2-0x0000000005BE0000-0x0000000006184000-memory.dmp

Filesize
5.6MB

Download
memory/1600-1-0x0000000000AF0000-0x0000000000C0A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads