agenttesla | 1ff34618be1d5570d868a6825618ec9af4019acd9a3d7cfc56592b06d4fd8644

General

Target

f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe
Size

1008KB
MD5

f7b4a4135da18217e8b22202202d476c
SHA1

6042ac8d0459ddebb2734ebcd4cc139a14589baa
SHA256

1ff34618be1d5570d868a6825618ec9af4019acd9a3d7cfc56592b06d4fd8644
SHA512

e510c9be66e3fc346c07a291380df3470eb33fb505768598f0d3670651b0e10c941c6a23fd9c6d185d96d8f9668e36b6971e605ccf39360f86be828518d5e271
SSDEEP

12288:TpEDiOcATbCJwhbmEvjIsO6pxvwDDTiXz3E+5ulb5:Tp2iOcImELI76vwuDJ

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
77.83.117.234
Port:
587
Username:
[email protected]
Password:
8txksCN56

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/1704-5-0x0000000000400000-0x000000000044E000-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-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 1704	1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe	97

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	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1704	RegAsm.exe
1704	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1704	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1704	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1704	1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe	97
PID 1660 wrote to memory of 1704	1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe	97
PID 1660 wrote to memory of 1704	1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe	97
PID 1660 wrote to memory of 1704	1660	f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f7b4a4135da18217e8b22202202d476c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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:1704

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4180,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4608 /prefetch:8
1⤵
PID:3308

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1660-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/1660-1-0x0000000000A90000-0x0000000000B92000-memory.dmp

Filesize
1.0MB

Download
memory/1660-2-0x0000000005440000-0x0000000005496000-memory.dmp

Filesize
344KB

Download
memory/1660-4-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/1660-17-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/1660-7-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/1704-11-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/1704-9-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/1704-8-0x00000000060E0000-0x0000000006684000-memory.dmp

Filesize
5.6MB

Download
memory/1704-10-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download
memory/1704-12-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

Filesize
624KB

Download
memory/1704-14-0x00000000067D0000-0x0000000006836000-memory.dmp

Filesize
408KB

Download
memory/1704-13-0x0000000005B50000-0x0000000005B68000-memory.dmp

Filesize
96KB

Download
memory/1704-15-0x0000000006D10000-0x0000000006D60000-memory.dmp

Filesize
320KB

Download
memory/1704-16-0x0000000007000000-0x000000000700A000-memory.dmp

Filesize
40KB

Download
memory/1704-5-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1704-18-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/1704-19-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download

Analysis

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