00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

General

Target

f8a480f1304242c8d73a6350a28654cc_JC.exe
Size

216KB
MD5

f8a480f1304242c8d73a6350a28654cc
SHA1

08700fc03bb050b5a49a7bc12463b464f9143b45
SHA256

00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b
SHA512

2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729
SSDEEP

3072:SPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygntwwx:/rTfUHeeSKOS9ccFKk3Y9t9YZwx

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2912	Isass.exe

Loads dropped DLL 2 IoCs

pid	Process
2528	f8a480f1304242c8d73a6350a28654cc_JC.exe
2528	f8a480f1304242c8d73a6350a28654cc_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\USER\S-1-5-21-3750544865-3773649541-1858556521-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	f8a480f1304242c8d73a6350a28654cc_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	f8a480f1304242c8d73a6350a28654cc_JC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2528	f8a480f1304242c8d73a6350a28654cc_JC.exe
2912	Isass.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2912	2528	f8a480f1304242c8d73a6350a28654cc_JC.exe	27
PID 2528 wrote to memory of 2912	2528	f8a480f1304242c8d73a6350a28654cc_JC.exe	27
PID 2528 wrote to memory of 2912	2528	f8a480f1304242c8d73a6350a28654cc_JC.exe	27
PID 2528 wrote to memory of 2912	2528	f8a480f1304242c8d73a6350a28654cc_JC.exe	27

C:\Users\Admin\AppData\Local\Temp\f8a480f1304242c8d73a6350a28654cc_JC.exe
"C:\Users\Admin\AppData\Local\Temp\f8a480f1304242c8d73a6350a28654cc_JC.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2912

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
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

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

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

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

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

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

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

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

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

Download Submit
memory/2528-14-0x00000000040B0000-0x0000000005359000-memory.dmp

Filesize
18.7MB

Download
memory/2528-2-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2528-11-0x00000000040B0000-0x0000000005359000-memory.dmp

Filesize
18.7MB

Download
memory/2528-1-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2528-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-18-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-35-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-16-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-17-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-12-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-21-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-22-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-27-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-13-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2912-36-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-41-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-42-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-48-0x0000000004350000-0x00000000055F9000-memory.dmp

Filesize
18.7MB

Download
memory/2912-49-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-50-0x0000000004350000-0x00000000055F9000-memory.dmp

Filesize
18.7MB

Download
memory/2912-51-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2912-58-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads