b0368ec19dad6310577ab0b937dc9f78fcff79b2b6fa649f2cbb4e45c1e8bdc8

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
14-08-2024 02:20

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General

Target

8e56525f13bc18c4c84e461f04f957f0N.exe
Size

910KB
MD5

8e56525f13bc18c4c84e461f04f957f0
SHA1

0c2b3d3c65151314cf025b46b988486b9326eeb1
SHA256

b0368ec19dad6310577ab0b937dc9f78fcff79b2b6fa649f2cbb4e45c1e8bdc8
SHA512

cc894436ce7fbb036688936c56a4015a061690376fc0fc4360a25d9583a54c2871df071cae43b3fc92bd4ebf5f1aeebb1bf4ba32220230268e33991f13d0fb8f
SSDEEP

12288:/n8yN0Mr8Zmk7aVs7IypwXK4Qzh+jMlWCEh/E8kj2fPWadHduXhus/REQpVCW:vPuZmkQIfpwiz0wy/E8c0sp5YW

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	8e56525f13bc18c4c84e461f04f957f0N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	8e56525f13bc18c4c84e461f04f957f0N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	8e56525f13bc18c4c84e461f04f957f0N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Isass.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	8e56525f13bc18c4c84e461f04f957f0N.exe

Executes dropped EXE 7 IoCs

pid	Process
4948	Isass.exe
4396	Isass.exe
2540	Isass.exe
944	Isass.exe
1656	Isass.exe
1220	8e56525f13bc18c4c84e461f04f957f0N.exe
4664	8e56525f13bc18c4c84e461f04f957f0N.exe

Loads dropped DLL 1 IoCs

pid	Process
4664	8e56525f13bc18c4c84e461f04f957f0N.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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	8e56525f13bc18c4c84e461f04f957f0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	8e56525f13bc18c4c84e461f04f957f0N.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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 11 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	8e56525f13bc18c4c84e461f04f957f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e56525f13bc18c4c84e461f04f957f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e56525f13bc18c4c84e461f04f957f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e56525f13bc18c4c84e461f04f957f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e56525f13bc18c4c84e461f04f957f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e56525f13bc18c4c84e461f04f957f0N.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2432	8e56525f13bc18c4c84e461f04f957f0N.exe
2432	8e56525f13bc18c4c84e461f04f957f0N.exe
4948	Isass.exe
4948	Isass.exe
4396	Isass.exe
4396	Isass.exe
4396	Isass.exe
4396	Isass.exe
4396	Isass.exe
4396	Isass.exe
1168	8e56525f13bc18c4c84e461f04f957f0N.exe
1168	8e56525f13bc18c4c84e461f04f957f0N.exe
2540	Isass.exe
2540	Isass.exe
2540	Isass.exe
2540	Isass.exe
2540	Isass.exe
2540	Isass.exe
1612	8e56525f13bc18c4c84e461f04f957f0N.exe
1612	8e56525f13bc18c4c84e461f04f957f0N.exe
944	Isass.exe
944	Isass.exe
944	Isass.exe
944	Isass.exe
944	Isass.exe
944	Isass.exe
5040	8e56525f13bc18c4c84e461f04f957f0N.exe
5040	8e56525f13bc18c4c84e461f04f957f0N.exe
1656	Isass.exe
1656	Isass.exe
1656	Isass.exe
1656	Isass.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 4948	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	84
PID 2432 wrote to memory of 4948	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	84
PID 2432 wrote to memory of 4948	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	84
PID 2432 wrote to memory of 4396	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	85
PID 2432 wrote to memory of 4396	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	85
PID 2432 wrote to memory of 4396	2432	8e56525f13bc18c4c84e461f04f957f0N.exe	85
PID 4396 wrote to memory of 1168	4396	Isass.exe	86
PID 4396 wrote to memory of 1168	4396	Isass.exe	86
PID 4396 wrote to memory of 1168	4396	Isass.exe	86
PID 1168 wrote to memory of 2540	1168	8e56525f13bc18c4c84e461f04f957f0N.exe	87
PID 1168 wrote to memory of 2540	1168	8e56525f13bc18c4c84e461f04f957f0N.exe	87
PID 1168 wrote to memory of 2540	1168	8e56525f13bc18c4c84e461f04f957f0N.exe	87
PID 2540 wrote to memory of 1612	2540	Isass.exe	88
PID 2540 wrote to memory of 1612	2540	Isass.exe	88
PID 2540 wrote to memory of 1612	2540	Isass.exe	88
PID 1612 wrote to memory of 944	1612	8e56525f13bc18c4c84e461f04f957f0N.exe	89
PID 1612 wrote to memory of 944	1612	8e56525f13bc18c4c84e461f04f957f0N.exe	89
PID 1612 wrote to memory of 944	1612	8e56525f13bc18c4c84e461f04f957f0N.exe	89
PID 944 wrote to memory of 5040	944	Isass.exe	90
PID 944 wrote to memory of 5040	944	Isass.exe	90
PID 944 wrote to memory of 5040	944	Isass.exe	90
PID 5040 wrote to memory of 1656	5040	8e56525f13bc18c4c84e461f04f957f0N.exe	91
PID 5040 wrote to memory of 1656	5040	8e56525f13bc18c4c84e461f04f957f0N.exe	91
PID 5040 wrote to memory of 1656	5040	8e56525f13bc18c4c84e461f04f957f0N.exe	91
PID 1656 wrote to memory of 1220	1656	Isass.exe	92
PID 1656 wrote to memory of 1220	1656	Isass.exe	92
PID 1656 wrote to memory of 1220	1656	Isass.exe	92
PID 1220 wrote to memory of 4664	1220	8e56525f13bc18c4c84e461f04f957f0N.exe	93
PID 1220 wrote to memory of 4664	1220	8e56525f13bc18c4c84e461f04f957f0N.exe	93
PID 1220 wrote to memory of 4664	1220	8e56525f13bc18c4c84e461f04f957f0N.exe	93

C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
"C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.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:2432
- 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:4948
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4396
- - C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1168
  - - C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2540
    - - C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe"
        5⤵
        Checks computer location settings
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:1612
      - C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
        6⤵
        Checks computer location settings
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:944
        
        C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe"
        7⤵
        Checks computer location settings
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:5040
        
        C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
        8⤵
        Checks computer location settings
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:1656
        
        C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe
        
        "C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe"
        9⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1220
        
        C:\Windows\Temp\{B6F5F386-36BD-4181-BD8D-4924838EDC2F}\.cr\8e56525f13bc18c4c84e461f04f957f0N.exe
        
        "C:\Windows\Temp\{B6F5F386-36BD-4181-BD8D-4924838EDC2F}\.cr\8e56525f13bc18c4c84e461f04f957f0N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe" -burn.filehandle.attached=540 -burn.filehandle.self=548
        10⤵
        Executes dropped EXE
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        
        PID:4664

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

Filesize
745KB

MD5
66162a428e9133b06f4153b49fc83caa

SHA1
9704cf9b65a6961792cd09f7514188dd07a8e0c8

SHA256
e55f55cb910ad9ae17d9a66977a4f507f36f8d893e9a9451a3d4fa94b8e028b2

SHA512
da6329fcd55ebcc3e5df60869e068a2e141ae9413a90ea3c36792c67c5aa22b95e12ed718016c3a92d05547a573c5ab496db2dee244a0434d97ca5c93753e3a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\8e56525f13bc18c4c84e461f04f957f0N.exe

Filesize
632KB

MD5
c27046bd35c5717084bb40c7305b941a

SHA1
51510a7753dd2a1236b34b495db21ef18a74c25c

SHA256
e0bc82c13bcd1ade084a0421dab88e23e9cc5499323449e585e7dd2116951bd3

SHA512
df9dc98043ea5b86c671e769a75e569366223c5a291f5eed22f68af9783a0aa295d8bb0ee0b510767cce7961f2e501124d9fe656044766644e18682f21446214

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

Filesize
256KB

MD5
ff50b5d0f14788a29b1339dcd91a0900

SHA1
f78f7c8dd81d27cd9a1fd6ef295b2d42ff3bed85

SHA256
52c5071ede287e89c3d8518c075ad507264b030bd50b5c01488b9aeccac4b6d0

SHA512
17b32f0376e1f3fb919131b823881d7d512cddfa3eba9db2a2b0d8e2deb76f587b4f97a43c58b55f5ac937adfcee86916054c2f74539fcae642ab6987c6b627c

Download Submit
C:\Windows\Temp\{AFE64070-01DA-420D-ACEA-1B5C176F9048}\.ba\logo.png

Filesize
1KB

MD5
d6bd210f227442b3362493d046cea233

SHA1
ff286ac8370fc655aea0ef35e9cf0bfcb6d698de

SHA256
335a256d4779ec5dcf283d007fb56fd8211bbcaf47dcd70fe60ded6a112744ef

SHA512
464aaab9e08de610ad34b97d4076e92dc04c2cdc6669f60bfc50f0f9ce5d71c31b8943bd84cee1a04fb9ab5bbed3442bd41d9cb21a0dd170ea97c463e1ce2b5b

Download Submit
C:\Windows\Temp\{AFE64070-01DA-420D-ACEA-1B5C176F9048}\.ba\wixstdba.dll

Filesize
191KB

MD5
eab9caf4277829abdf6223ec1efa0edd

SHA1
74862ecf349a9bedd32699f2a7a4e00b4727543d

SHA256
a4efbdb2ce55788ffe92a244cb775efd475526ef5b61ad78de2bcdfaddac7041

SHA512
45b15ade68e0a90ea7300aeb6dca9bc9e347a63dba5ce72a635957564d1bdf0b1584a5e34191916498850fc7b3b7ecfbcbfcb246b39dbf59d47f66bc825c6fd2

Download Submit
memory/944-18-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1168-11-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1168-14-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1612-17-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1656-32-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2432-4-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2432-7-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2540-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4396-9-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4396-10-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-80-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-89-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-5-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-83-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-84-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-85-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-8-0x0000000001A10000-0x0000000001A11000-memory.dmp

Filesize
4KB

Download
memory/4948-117-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-90-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-98-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-99-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-105-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-106-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4948-116-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/5040-20-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download