agenttesla | f7c5429a185569e355d9ee8597eac5d75e6079fd91713e77ec2af675fe9b7f1f

General

Target

f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
Size

785KB
MD5

f22912cbc0d7b2505bae8bf268cc2e66
SHA1

16cec5347a8753d861681f300355668b5115db41
SHA256

f7c5429a185569e355d9ee8597eac5d75e6079fd91713e77ec2af675fe9b7f1f
SHA512

f8000bca1d470d68ba4d31ae61c80e6e50a8ec897156be82f4bcf024425235dd2a2f4427d4df52b1c24b669994d60e81ad331b73ad7f000d26e02cf0d620960c
SSDEEP

12288:tYV6MorX7qzuC3QHO9FQVHPF51jgcTy6SikT5KzoSsD2mSfYwI/RtNdMKrDi6:CBXu9HGaVHW6drzzu/p/RtNdXF

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Signatures

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

AgentTesla payload 12 IoCs

resource	yara_rule
behavioral2/memory/4292-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-31-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-30-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-28-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-25-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-24-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-22-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-20-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-19-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4292-33-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\authentication.url	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2332-0-0x0000000000730000-0x00000000008E4000-memory.dmp	upx
behavioral2/memory/2332-13-0x0000000000730000-0x00000000008E4000-memory.dmp	upx

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-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

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
38	checkip.amazonaws.com

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2332-13-0x0000000000730000-0x00000000008E4000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2332 set thread context of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82

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	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4292	RegSvcs.exe
4292	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	RegSvcs.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4292	RegSvcs.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82
PID 2332 wrote to memory of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82
PID 2332 wrote to memory of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82
PID 2332 wrote to memory of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82
PID 2332 wrote to memory of 4292	2332	f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f22912cbc0d7b2505bae8bf268cc2e66_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2332-13-0x0000000000730000-0x00000000008E4000-memory.dmp

Filesize
1.7MB

Download
memory/2332-6-0x00000000022A0000-0x00000000022A1000-memory.dmp

Filesize
4KB

Download
memory/2332-0-0x0000000000730000-0x00000000008E4000-memory.dmp

Filesize
1.7MB

Download
memory/4292-28-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-24-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-15-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/4292-16-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/4292-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-31-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-30-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-7-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-25-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-14-0x0000000074382000-0x0000000074383000-memory.dmp

Filesize
4KB

Download
memory/4292-22-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-20-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-33-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4292-34-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/4292-35-0x0000000074382000-0x0000000074383000-memory.dmp

Filesize
4KB

Download
memory/4292-36-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/4292-37-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/4292-38-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download

Analysis

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