agenttesla | 74cf0cd3c6d97651a240bdcadef58f88a9f56e06ceaf9b247777a023a81583b4

General

Target

JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe
Size

952KB
MD5

9113e90180121aef04bce6f955abcd3f
SHA1

083ccca74257bafc6547a6e4bcb9b3c59703c076
SHA256

74cf0cd3c6d97651a240bdcadef58f88a9f56e06ceaf9b247777a023a81583b4
SHA512

ff67d25b1f9c8c917b18a982f195c98e14ad2a5073fc4b99b90e363bf61c450162ed19a61620a3ab1473670f4d2beb96d913cc1d78620c09ba51f002b81dc256
SSDEEP

12288:1+Txbat6yWIWEYeozu38EF3FfC4f3R9fGUhG3xCVITuREvqkxQWXQJixJ8nitW9a:qC6yaEVK5w9uwG

Score

10^/10

agenttesla collection credential_access defense_evasion discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.dm-teh.com
Port:
587
Username:
[email protected]
Password:
Vm@(O;CO.vEQ
Email To:
[email protected]

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/4040-13-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	InstallUtil.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 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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4528 set thread context of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100

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_9113e90180121aef04bce6f955abcd3f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe
4040	InstallUtil.exe
4040	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe
Token: SeDebugPrivilege	4040	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100
PID 4528 wrote to memory of 4040	4528	JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe	100

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9113e90180121aef04bce6f955abcd3f.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

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\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/4040-13-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4040-26-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4040-25-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4040-24-0x00000000068C0000-0x0000000006910000-memory.dmp

Filesize
320KB

Download
memory/4040-23-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4040-22-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4040-21-0x0000000006360000-0x00000000063C6000-memory.dmp

Filesize
408KB

Download
memory/4040-20-0x0000000005990000-0x00000000059A8000-memory.dmp

Filesize
96KB

Download
memory/4040-19-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4040-17-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4528-5-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4528-11-0x00000000068E0000-0x00000000068F2000-memory.dmp

Filesize
72KB

Download
memory/4528-9-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4528-18-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4528-8-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

Filesize
4KB

Download
memory/4528-7-0x0000000007CF0000-0x0000000007CFA000-memory.dmp

Filesize
40KB

Download
memory/4528-6-0x0000000002E50000-0x0000000002E7C000-memory.dmp

Filesize
176KB

Download
memory/4528-0-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

Filesize
4KB

Download
memory/4528-4-0x0000000005580000-0x000000000561C000-memory.dmp

Filesize
624KB

Download
memory/4528-3-0x00000000054E0000-0x0000000005572000-memory.dmp

Filesize
584KB

Download
memory/4528-2-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/4528-1-0x0000000000AF0000-0x0000000000BE4000-memory.dmp

Filesize
976KB

Download

Analysis

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