1cc59b4142e6aba697b6416db732ede7f87c1bb76444307b2e0ee4c5af0d598a

General

Target

NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe
Size

216KB
MD5

914bc1a57dedeb6c4c28365b41b4c260
SHA1

f6bb527f8862fda30bb36b1f3f0125ade1536a6e
SHA256

1cc59b4142e6aba697b6416db732ede7f87c1bb76444307b2e0ee4c5af0d598a
SHA512

08dcea76115ee2f934283225f51bcaf50b5540bd15b5564197c28b2307f143b8b9cb7c0945904718c29b0585c2afc2f0b2aa8216629ac9dde187edeb115506da
SSDEEP

3072:SPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9YgntwZ:/rTfUHeeSKOS9ccFKk3Y9t9YZZ

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2716	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-1-5-21-3811856890-180006922-3689258494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3696	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe
3696	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe
2716	Isass.exe
2716	Isass.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3696 wrote to memory of 2716	3696	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe	88
PID 3696 wrote to memory of 2716	3696	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe	88
PID 3696 wrote to memory of 2716	3696	NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe	88

C:\Users\Admin\AppData\Local\Temp\NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.914bc1a57dedeb6c4c28365b41b4c260.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2716

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
216KB

MD5
914bc1a57dedeb6c4c28365b41b4c260

SHA1
f6bb527f8862fda30bb36b1f3f0125ade1536a6e

SHA256
1cc59b4142e6aba697b6416db732ede7f87c1bb76444307b2e0ee4c5af0d598a

SHA512
08dcea76115ee2f934283225f51bcaf50b5540bd15b5564197c28b2307f143b8b9cb7c0945904718c29b0585c2afc2f0b2aa8216629ac9dde187edeb115506da

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

Filesize
216KB

MD5
914bc1a57dedeb6c4c28365b41b4c260

SHA1
f6bb527f8862fda30bb36b1f3f0125ade1536a6e

SHA256
1cc59b4142e6aba697b6416db732ede7f87c1bb76444307b2e0ee4c5af0d598a

SHA512
08dcea76115ee2f934283225f51bcaf50b5540bd15b5564197c28b2307f143b8b9cb7c0945904718c29b0585c2afc2f0b2aa8216629ac9dde187edeb115506da

Download Submit
C:\odt\office2016setup.exe

Filesize
5.3MB

MD5
77f087ff8094853916c6c82567d1038e

SHA1
ec09d002ba63cd318f88d09dd4b884e66cd0cffc

SHA256
0c407d2b505275f685a47dfda7d9c5c0b365fecaeaa0db18e95e8d5fc13ad036

SHA512
c9925a308e7d36501909d8f128db416ef9b648d9d8f2e6cd3230fa769dc1b9bb1ef5566482609ea3795fc68c76d78b80e4cee18a7d0913e00fa30e59391fe440

Download Submit
memory/2716-17-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-19-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-8-0x0000000002100000-0x0000000002101000-memory.dmp

Filesize
4KB

Download
memory/2716-67-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-9-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-10-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-13-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-55-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-54-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-7-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-22-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-27-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-37-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-38-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-45-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2716-46-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3696-1-0x0000000001AA0000-0x0000000001AA1000-memory.dmp

Filesize
4KB

Download
memory/3696-0-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3696-6-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads