2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

General

Target

c86a960bc9e16ae974341abd369cf32f_JC.exe
Size

211KB
MD5

c86a960bc9e16ae974341abd369cf32f
SHA1

e8a2547fa7e257297a0d337cbfe407c827ce7c9e
SHA256

2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa
SHA512

b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1
SSDEEP

3072:EPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygnt:9rTfUHeeSKOS9ccFKk3Y9t9Y

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2452	Isass.exe

Loads dropped DLL 2 IoCs

pid	Process
3044	c86a960bc9e16ae974341abd369cf32f_JC.exe
3044	c86a960bc9e16ae974341abd369cf32f_JC.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:\\Users\\Public\\Microsoft Build\\Isass.exe"	c86a960bc9e16ae974341abd369cf32f_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	c86a960bc9e16ae974341abd369cf32f_JC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3044	c86a960bc9e16ae974341abd369cf32f_JC.exe
2452	Isass.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2452	3044	c86a960bc9e16ae974341abd369cf32f_JC.exe	28
PID 3044 wrote to memory of 2452	3044	c86a960bc9e16ae974341abd369cf32f_JC.exe	28
PID 3044 wrote to memory of 2452	3044	c86a960bc9e16ae974341abd369cf32f_JC.exe	28
PID 3044 wrote to memory of 2452	3044	c86a960bc9e16ae974341abd369cf32f_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe
"C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2452

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

Replay Monitor

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Downloads

C:\Users\Public\Microsoft Build\Isass.exe

Filesize
211KB

MD5
c86a960bc9e16ae974341abd369cf32f

SHA1
e8a2547fa7e257297a0d337cbfe407c827ce7c9e

SHA256
2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

SHA512
b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

Download Submit
C:\Users\Public\Microsoft Build\Isass.exe

Filesize
211KB

MD5
c86a960bc9e16ae974341abd369cf32f

SHA1
e8a2547fa7e257297a0d337cbfe407c827ce7c9e

SHA256
2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

SHA512
b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

Download Submit
C:\Users\Public\Microsoft Build\Isass.exe

Filesize
211KB

MD5
c86a960bc9e16ae974341abd369cf32f

SHA1
e8a2547fa7e257297a0d337cbfe407c827ce7c9e

SHA256
2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

SHA512
b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

Download Submit
\Users\Public\Microsoft Build\Isass.exe

Filesize
211KB

MD5
c86a960bc9e16ae974341abd369cf32f

SHA1
e8a2547fa7e257297a0d337cbfe407c827ce7c9e

SHA256
2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

SHA512
b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

Download Submit
\Users\Public\Microsoft Build\Isass.exe

Filesize
211KB

MD5
c86a960bc9e16ae974341abd369cf32f

SHA1
e8a2547fa7e257297a0d337cbfe407c827ce7c9e

SHA256
2ffb5eb543aaf133c10db110de4691514ce9a4799ba549d2e972d9254c88f3aa

SHA512
b8255831602340314b39b69f7dd49159f6c67521908244ea37375561ac2c00dcc9d3de35a0b86bb3d9a3f989e5197c65b815011c7483cce18cf77719f0886ef1

Download Submit
memory/2452-35-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-28-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-57-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-56-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-13-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-14-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2452-15-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-16-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-19-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-20-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-27-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-49-0x0000000004270000-0x0000000005518000-memory.dmp

Filesize
18.7MB

Download
memory/2452-34-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-48-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-40-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-41-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2452-47-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3044-8-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3044-11-0x0000000004210000-0x00000000054B8000-memory.dmp

Filesize
18.7MB

Download
memory/3044-12-0x0000000004210000-0x00000000054B8000-memory.dmp

Filesize
18.7MB

Download
memory/3044-10-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads