agenttesla | 7c204f35b9ee817d98670d20ad2a8d41e6d7a0cf96d86c5bc44cdf41d9296b95

General

Target

d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
Size

370KB
MD5

d2bb15eedc3467e3639ec37e3be2a2b3
SHA1

512b355d73854196867bee81689e829ff83ba6c3
SHA256

7c204f35b9ee817d98670d20ad2a8d41e6d7a0cf96d86c5bc44cdf41d9296b95
SHA512

b25bd4ba9dabbe93deffe5b5233dece21a94fde3d4abf6f126e7883f3a8e5a632ee93ddd2a37129fcd1b7bdf8e021dc667e4b61d749dc8a1b71954d58da804c1
SSDEEP

6144:18LxBDGeKGDuGyGNQjdefxSLNfZv1YGI3dnPvJpVIjDWXwfprk/y+365:ljfNFiJUj+wfprkS5

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1803146213:AAHYyCRx7FggQ9LfPbrIs79ZUWCEc9wNnDo/sendDocument

Signatures

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

AgentTesla payload 4 IoCs

resource	yara_rule
behavioral1/memory/1228-9-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1228-13-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1228-12-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1228-14-0x0000000001E50000-0x0000000001E8C000-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

Loads dropped DLL 1 IoCs

pid	Process
2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.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
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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30

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

System Information Discovery
T1082

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	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1228	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
1228	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30
PID 2496 wrote to memory of 1228	2496	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Users\Admin\AppData\Local\Temp\d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d2bb15eedc3467e3639ec37e3be2a2b3_JaffaCakes118.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1228

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

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

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\Temp\nstB5E8.tmp\unrngcgu.dll

Filesize
24KB

MD5
8bb161b0a10d00995ed1a96179bfd7f1

SHA1
eb487924c9478448dddfce6379043a8bd86ba6ac

SHA256
e3ad6c7973071ba2d0a080b334434d2bf2a93215b18d34b914809019672d66ae

SHA512
e6c0b456d58f45a44dc51f4c9951fccaf3acd174419b614fd6fd04a13cbfd8cf833c166e65880091e681976a3fe9f64b5f16d8b36746754c302ce5cbf49da2c4

Download Submit
memory/1228-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1228-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1228-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1228-14-0x0000000001E50000-0x0000000001E8C000-memory.dmp

Filesize
240KB

Download
memory/2496-7-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download
memory/2496-11-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download

Analysis

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