e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279

General

Target

e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe
Size

445KB
MD5

cae670674077b8fcebbe591b733b1e32
SHA1

0f571fd1e1400486783ecf6050ddafd804c6f3d3
SHA256

e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279
SHA512

784f05cd6d91164e2751f4568782d732cc7bb8d573f8810d8700cb964de6585876219af727c23608a98311791babc6c3781cd9d290c191d213cd7d2e0092f50e
SSDEEP

6144:ztvBPnU1b7e9SQii1EkoNlhlrQ2ZrM2xP8YNVjAsdgdq0EqFIYqRqhOvRHOT:Zv1nWdQP1EDhZPxrNtoqOFBqkYHe

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1724	Isass.exe

Loads dropped DLL 2 IoCs

pid	Process
2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe
2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe"	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe"	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Build\Isass.exe	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe
1724	Isass.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 1724	2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe	28
PID 2912 wrote to memory of 1724	2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe	28
PID 2912 wrote to memory of 1724	2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe	28
PID 2912 wrote to memory of 1724	2912	e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe	28

C:\Users\Admin\AppData\Local\Temp\e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe
"C:\Users\Admin\AppData\Local\Temp\e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Program Files (x86)\Microsoft Build\Isass.exe
  "C:\Program Files (x86)\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:1724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\Program Files (x86)\Microsoft Build\Isass.exe

Filesize
445KB

MD5
cae670674077b8fcebbe591b733b1e32

SHA1
0f571fd1e1400486783ecf6050ddafd804c6f3d3

SHA256
e5f70b4133a9ac6d8f45eb8fb5a5707a5777cae63eef549e6b1d4245e9707279

SHA512
784f05cd6d91164e2751f4568782d732cc7bb8d573f8810d8700cb964de6585876219af727c23608a98311791babc6c3781cd9d290c191d213cd7d2e0092f50e

Download Submit
memory/1724-24-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-26-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-69-0x00000000043E0000-0x0000000005687000-memory.dmp

Filesize
18.7MB

Download
memory/1724-14-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/1724-13-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-68-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-15-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-16-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-21-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-27-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-55-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-25-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-42-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-28-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-34-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-35-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-36-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/1724-37-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2912-8-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2912-10-0x0000000004380000-0x0000000005627000-memory.dmp

Filesize
18.7MB

Download
memory/2912-12-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2912-11-0x0000000004380000-0x0000000005627000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads