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
3244	Isass.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\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	c86a960bc9e16ae974341abd369cf32f_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	c86a960bc9e16ae974341abd369cf32f_JC.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1480	c86a960bc9e16ae974341abd369cf32f_JC.exe
1480	c86a960bc9e16ae974341abd369cf32f_JC.exe
3244	Isass.exe
3244	Isass.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 3244	1480	c86a960bc9e16ae974341abd369cf32f_JC.exe	86
PID 1480 wrote to memory of 3244	1480	c86a960bc9e16ae974341abd369cf32f_JC.exe	86
PID 1480 wrote to memory of 3244	1480	c86a960bc9e16ae974341abd369cf32f_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe
"C:\Users\Admin\AppData\Local\Temp\c86a960bc9e16ae974341abd369cf32f_JC.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:3244

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:\odt\office2016setup.exe

Filesize
5.3MB

MD5
0f0137052e935b0db07044ab070b2a5a

SHA1
821a1be411aac38f04887f625580b43576cf6563

SHA256
79cb5355251478b42b816ed24fdd740dfbaecdcdfe61dac0e5975cd76218e31c

SHA512
2fa52e194f6773ec04d0dc49892ab628aa0881ead0ec36ba106bf752976f52c552ae341076fd2c8682a7eb415fbae37c4821ef0a3ead1a825be086c91b428c6b

Download Submit
memory/1480-6-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/1480-1-0x0000000001CB0000-0x0000000001CB1000-memory.dmp

Filesize
4KB

Download
memory/1480-0-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-17-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-28-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-10-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-11-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-8-0x0000000001FF0000-0x0000000001FF1000-memory.dmp

Filesize
4KB

Download
memory/3244-7-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-19-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-22-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-24-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-9-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-32-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-38-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-45-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-46-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-52-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-55-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3244-64-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads