8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

General

Target

NEAS.b985240a0f1a4a4ec627b86387121d10.exe
Size

211KB
MD5

b985240a0f1a4a4ec627b86387121d10
SHA1

cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8
SHA256

8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8
SHA512

de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62
SSDEEP

3072:EPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygnt:9rTfUHeeSKOS9ccFKk3Y9t9Y

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2324	Isass.exe

Loads dropped DLL 2 IoCs

pid	Process
2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe
2148	NEAS.b985240a0f1a4a4ec627b86387121d10.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"	NEAS.b985240a0f1a4a4ec627b86387121d10.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	NEAS.b985240a0f1a4a4ec627b86387121d10.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe
2324	Isass.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2324	2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe	28
PID 2148 wrote to memory of 2324	2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe	28
PID 2148 wrote to memory of 2324	2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe	28
PID 2148 wrote to memory of 2324	2148	NEAS.b985240a0f1a4a4ec627b86387121d10.exe	28

C:\Users\Admin\AppData\Local\Temp\NEAS.b985240a0f1a4a4ec627b86387121d10.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.b985240a0f1a4a4ec627b86387121d10.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2324

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
b985240a0f1a4a4ec627b86387121d10

SHA1
cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8

SHA256
8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

SHA512
de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62

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

Filesize
211KB

MD5
b985240a0f1a4a4ec627b86387121d10

SHA1
cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8

SHA256
8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

SHA512
de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62

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

Filesize
211KB

MD5
b985240a0f1a4a4ec627b86387121d10

SHA1
cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8

SHA256
8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

SHA512
de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62

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

Filesize
211KB

MD5
b985240a0f1a4a4ec627b86387121d10

SHA1
cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8

SHA256
8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

SHA512
de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62

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

Filesize
211KB

MD5
b985240a0f1a4a4ec627b86387121d10

SHA1
cdda9ef0f13fbf21eabfd9f01c1afdcaa106e9e8

SHA256
8927d326ece1989deede7cc84ecbca6f8816e6e8c05688ddd5a668496ca200b8

SHA512
de7830bd322dc11dec289d6021783971e6e1f51b0a32d4ec8f7f4a74130bf09f5c9436c58d58243ac77c027c0b2c0a660627a4c23aa853671bd4115ff196dc62

Download Submit
memory/2148-10-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2148-9-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2148-11-0x00000000042B0000-0x0000000005558000-memory.dmp

Filesize
18.7MB

Download
memory/2324-18-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-34-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-14-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-15-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-12-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-19-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-26-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-27-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-33-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-13-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2324-39-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-40-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-46-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-47-0x0000000004240000-0x00000000054E8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-48-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-55-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2324-56-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads