59441ca951108c5ff13a32573ba85c4a0a2720f60e41e80fc0984fbf8d24e8aa

Analysis

max time kernel
140s
max time network
124s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-09-2024 08:59

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General

Target

3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Size

919KB
MD5

3f88e4466cf3ce4d19113304b28f78f4
SHA1

d6ed629b26e37f138ae62511338be903f4ebdb86
SHA256

3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e
SHA512

3827993b1e9a0fb15e02369947b026812069453733f913b01be33202422d17535c98f6635c93ae5b275924ca1b4f87d1e711d7be9e4e5d43eb39cf2342fe1069
SSDEEP

12288:8uPUTLYcAaUMhUhLupXshh1PEd5hOoXpJePfqw6gmQNhxAoRYn:8uPmLDUMihIXCE5Fi76gxh8

Score

7^/10

discovery persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
2008	Isass.exe
328	Isass.exe
2768	Isass.exe
2932	Isass.exe
2744	Isass.exe

Loads dropped DLL 8 IoCs

pid	Process
1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.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 9 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	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2008	Isass.exe
328	Isass.exe
328	Isass.exe
328	Isass.exe
2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2768	Isass.exe
2768	Isass.exe
2768	Isass.exe
2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2932	Isass.exe
2932	Isass.exe
2932	Isass.exe
2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
2744	Isass.exe
2744	Isass.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2008	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	30
PID 1820 wrote to memory of 2008	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	30
PID 1820 wrote to memory of 2008	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	30
PID 1820 wrote to memory of 2008	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	30
PID 1820 wrote to memory of 328	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	31
PID 1820 wrote to memory of 328	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	31
PID 1820 wrote to memory of 328	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	31
PID 1820 wrote to memory of 328	1820	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	31
PID 328 wrote to memory of 2292	328	Isass.exe	32
PID 328 wrote to memory of 2292	328	Isass.exe	32
PID 328 wrote to memory of 2292	328	Isass.exe	32
PID 328 wrote to memory of 2292	328	Isass.exe	32
PID 2292 wrote to memory of 2768	2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	33
PID 2292 wrote to memory of 2768	2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	33
PID 2292 wrote to memory of 2768	2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	33
PID 2292 wrote to memory of 2768	2292	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	33
PID 2768 wrote to memory of 2780	2768	Isass.exe	34
PID 2768 wrote to memory of 2780	2768	Isass.exe	34
PID 2768 wrote to memory of 2780	2768	Isass.exe	34
PID 2768 wrote to memory of 2780	2768	Isass.exe	34
PID 2780 wrote to memory of 2932	2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	35
PID 2780 wrote to memory of 2932	2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	35
PID 2780 wrote to memory of 2932	2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	35
PID 2780 wrote to memory of 2932	2780	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	35
PID 2932 wrote to memory of 2956	2932	Isass.exe	36
PID 2932 wrote to memory of 2956	2932	Isass.exe	36
PID 2932 wrote to memory of 2956	2932	Isass.exe	36
PID 2932 wrote to memory of 2956	2932	Isass.exe	36
PID 2956 wrote to memory of 2744	2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	37
PID 2956 wrote to memory of 2744	2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	37
PID 2956 wrote to memory of 2744	2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	37
PID 2956 wrote to memory of 2744	2956	3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe	37

C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
"C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1820
- 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:2008
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:328
- - C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
    "C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2292
  - - C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2768
    - - C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
        
        "C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe"
        5⤵
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2780
      - C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2932
        
        C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
        
        "C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe"
        7⤵
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2956
        
        C:\Users\Public\Microsoft Build\Isass.exe
        
        "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe
        8⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:2744

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

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\Temp\3673c4e11b206790d884eedcaced0e58d19bf08b6554c8df64725aba2573240e.exe

Filesize
284KB

MD5
290ab3601b988b124f4911778d89626a

SHA1
91082fca98f044b2d98ffd66930215f8e1852884

SHA256
dcb9736a6019fa15abe55507d4ce1d22443683cf474b72de204947fb1823c736

SHA512
aec8c1ebc47525f49882dc04fbb4b8e24f8bc506430c106ca66ef68f02ca8c7faca0ba2e7c649e9a631ad37eae2844484274ad42e78b90a446161197cb95ef41

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

Filesize
624KB

MD5
b01405cb348a3cd105c66cc390ff7fb3

SHA1
a706e33fc2258aa2618953963d468f27760a8ad5

SHA256
345dc0e46f05f78cd67044d6af423a6d3e4e04a28112f0bb0379ef3e5f63c2b4

SHA512
6aa7b7dc1d0adf5df7c2ffe68faa5bfbeb7016621ebefccdad7e0b573ec6290a08b4f90e44318c577c80cf009b808e72be5acb5f45e007b340b01f641c107740

Download Submit
memory/328-15-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/1820-0-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1820-14-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-59-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-52-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-93-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-81-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-80-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-69-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-32-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-35-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-36-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-40-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-44-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-68-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-53-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2008-9-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2008-60-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2292-19-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2744-31-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2768-20-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2780-23-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2932-24-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download
memory/2956-26-0x0000000000400000-0x00000000016A3000-memory.dmp

Filesize
18.6MB

Download