agenttesla | 221fc16f9fdd9252887317c680d227abd7ae6bf3e067e16daccdb91c691ff7dc

General

Target

d4452602fd93702789a7635c41c578de_JaffaCakes118.exe
Size

700KB
MD5

d4452602fd93702789a7635c41c578de
SHA1

bde55d455ed1c018f0107f7b91d4c5d1ff0499b7
SHA256

221fc16f9fdd9252887317c680d227abd7ae6bf3e067e16daccdb91c691ff7dc
SHA512

a18ee2947b2ec94d0f76ad879ed7797fcd46b91d7c894440a2463e05c0bb6179e77853340f180f8dbf9736cb6bd4d5cf2f03afbbf5b8f8385b2937d0e14fbb6e
SSDEEP

12288:BG8aH69QqUf8N6YkihMLwiCkSD4kltX6rPlQPJripzascV40qNkCmmAA3A0MU0/5:g8rQqUf87uSkSDlltPRripzascV40qNQ

Score

10^/10

agenttesla agilenet collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 3 IoCs

resource	yara_rule
behavioral1/memory/2788-12-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/2788-10-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/2788-8-0x0000000000400000-0x0000000000458000-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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral1/memory/2844-3-0x0000000000A90000-0x0000000000B04000-memory.dmp	agile_net

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32

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	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2788	RegAsm.exe
2788	RegAsm.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe
2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2768	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	31
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32
PID 2844 wrote to memory of 2788	2844	d4452602fd93702789a7635c41c578de_JaffaCakes118.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\d4452602fd93702789a7635c41c578de_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d4452602fd93702789a7635c41c578de_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2768
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:2788

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

2

T1552

Credentials In Files

2

T1552.001

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/2788-12-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2788-16-0x0000000071322000-0x0000000071324000-memory.dmp

Filesize
8KB

Download
memory/2788-15-0x0000000071322000-0x0000000071324000-memory.dmp

Filesize
8KB

Download
memory/2788-8-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2788-10-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2844-3-0x0000000000A90000-0x0000000000B04000-memory.dmp

Filesize
464KB

Download
memory/2844-7-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2844-5-0x0000000000610000-0x0000000000666000-memory.dmp

Filesize
344KB

Download
memory/2844-13-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2844-4-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2844-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2844-14-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2844-2-0x0000000000230000-0x0000000000238000-memory.dmp

Filesize
32KB

Download
memory/2844-1-0x00000000013B0000-0x0000000001466000-memory.dmp

Filesize
728KB

Download

Analysis

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