2ebd604ff85686b58195957118cae4dcdb318268285bbd587392a184d312e9e2

Analysis

max time kernel
120s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 08:14

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General

Target

df9363108e38fe8667e137de69e26610N.exe
Size

532KB
MD5

df9363108e38fe8667e137de69e26610
SHA1

18af4b4a48d3ca9196aa64ec7ef2aa16606044da
SHA256

2ebd604ff85686b58195957118cae4dcdb318268285bbd587392a184d312e9e2
SHA512

b27661835aa0f46b8328df5d6e6ffbb5abe317e8ac8de2ef7bcd906edd9c010d54fa523cd0096eec6c973b35005bb4deeb44c36298e6fceec3eb1cec9173df83
SSDEEP

12288:/n8yN0Mr8ZFq5FPYc7pkEUTeeTX7W763KJT:vPuZFq5j7q3eqWh

Score

7^/10

discovery persistence spyware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 8 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	df9363108e38fe8667e137de69e26610N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	df9363108e38fe8667e137de69e26610N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	df9363108e38fe8667e137de69e26610N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	df9363108e38fe8667e137de69e26610N.exe

Executes dropped EXE 6 IoCs

pid	Process
3872	Isass.exe
3732	Isass.exe
2424	Isass.exe
1332	Isass.exe
1188	Isass.exe
1712	df9363108e38fe8667e137de69e26610N.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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	df9363108e38fe8667e137de69e26610N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	df9363108e38fe8667e137de69e26610N.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9363108e38fe8667e137de69e26610N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9363108e38fe8667e137de69e26610N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9363108e38fe8667e137de69e26610N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9363108e38fe8667e137de69e26610N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9363108e38fe8667e137de69e26610N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2684	df9363108e38fe8667e137de69e26610N.exe
2684	df9363108e38fe8667e137de69e26610N.exe
3872	Isass.exe
3872	Isass.exe
3732	Isass.exe
3732	Isass.exe
3732	Isass.exe
3732	Isass.exe
3732	Isass.exe
3732	Isass.exe
1464	df9363108e38fe8667e137de69e26610N.exe
1464	df9363108e38fe8667e137de69e26610N.exe
2424	Isass.exe
2424	Isass.exe
2424	Isass.exe
2424	Isass.exe
2424	Isass.exe
2424	Isass.exe
2192	df9363108e38fe8667e137de69e26610N.exe
2192	df9363108e38fe8667e137de69e26610N.exe
1332	Isass.exe
1332	Isass.exe
1332	Isass.exe
1332	Isass.exe
1332	Isass.exe
1332	Isass.exe
2648	df9363108e38fe8667e137de69e26610N.exe
2648	df9363108e38fe8667e137de69e26610N.exe
1188	Isass.exe
1188	Isass.exe
1188	Isass.exe
1188	Isass.exe
1712	df9363108e38fe8667e137de69e26610N.exe
1712	df9363108e38fe8667e137de69e26610N.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 3872	2684	df9363108e38fe8667e137de69e26610N.exe	84
PID 2684 wrote to memory of 3872	2684	df9363108e38fe8667e137de69e26610N.exe	84
PID 2684 wrote to memory of 3872	2684	df9363108e38fe8667e137de69e26610N.exe	84
PID 2684 wrote to memory of 3732	2684	df9363108e38fe8667e137de69e26610N.exe	85
PID 2684 wrote to memory of 3732	2684	df9363108e38fe8667e137de69e26610N.exe	85
PID 2684 wrote to memory of 3732	2684	df9363108e38fe8667e137de69e26610N.exe	85
PID 3732 wrote to memory of 1464	3732	Isass.exe	86
PID 3732 wrote to memory of 1464	3732	Isass.exe	86
PID 3732 wrote to memory of 1464	3732	Isass.exe	86
PID 1464 wrote to memory of 2424	1464	df9363108e38fe8667e137de69e26610N.exe	87
PID 1464 wrote to memory of 2424	1464	df9363108e38fe8667e137de69e26610N.exe	87
PID 1464 wrote to memory of 2424	1464	df9363108e38fe8667e137de69e26610N.exe	87
PID 2424 wrote to memory of 2192	2424	Isass.exe	89
PID 2424 wrote to memory of 2192	2424	Isass.exe	89
PID 2424 wrote to memory of 2192	2424	Isass.exe	89
PID 2192 wrote to memory of 1332	2192	df9363108e38fe8667e137de69e26610N.exe	90
PID 2192 wrote to memory of 1332	2192	df9363108e38fe8667e137de69e26610N.exe	90
PID 2192 wrote to memory of 1332	2192	df9363108e38fe8667e137de69e26610N.exe	90
PID 1332 wrote to memory of 2648	1332	Isass.exe	91
PID 1332 wrote to memory of 2648	1332	Isass.exe	91
PID 1332 wrote to memory of 2648	1332	Isass.exe	91
PID 2648 wrote to memory of 1188	2648	df9363108e38fe8667e137de69e26610N.exe	92
PID 2648 wrote to memory of 1188	2648	df9363108e38fe8667e137de69e26610N.exe	92
PID 2648 wrote to memory of 1188	2648	df9363108e38fe8667e137de69e26610N.exe	92
PID 1188 wrote to memory of 1712	1188	Isass.exe	94
PID 1188 wrote to memory of 1712	1188	Isass.exe	94
PID 1188 wrote to memory of 1712	1188	Isass.exe	94

C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
"C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3872
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3732
- - C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
    "C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1464
  - - C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2424
    - - C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe"
        5⤵
        Checks computer location settings
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2192
      - C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
        6⤵
        Checks computer location settings
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:1332
        
        C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe"
        7⤵
        Checks computer location settings
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2648
        
        C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
        8⤵
        Checks computer location settings
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:1188
        
        C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\df9363108e38fe8667e137de69e26610N.exe"
        9⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
261KB

MD5
0b02a39e11bb3a7731310eb89c13a5d0

SHA1
74ed83bb4758f77f5644d564531336c7e9cf6ff3

SHA256
120dcd0226cfc6c9aa03f947ae952a4e4e1b1ed8d7ae1c8282820307577d4378

SHA512
7666843dab3b98341de30ee30920475fb6cf80de4dedb5e21b63beac1a5e0b4a281cf57f6c6bca4e74ca961d6af08084680ee48513033a7ffb8a063fc2bea8f5

Download Submit
memory/1188-31-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1332-21-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1464-11-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1464-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1712-33-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2192-20-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2424-18-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2424-16-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2648-23-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2684-4-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2684-7-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3732-8-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3732-12-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-42-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-9-0x0000000001A60000-0x0000000001A61000-memory.dmp

Filesize
4KB

Download
memory/3872-34-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-37-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-38-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-5-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-43-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-51-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-52-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-58-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-59-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-66-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3872-67-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download