c86cec582d5f33a3b779d80cf48b59b4be08f0da97302c65f83eb4517d8efc35

Analysis

max time kernel
143s
max time network
140s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
15/10/2023, 19:39

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General

Target

7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
Size

318KB
MD5

7a76aa8b66225720bac9d217e27aa3d0
SHA1

e4138d452a5384dcbf1d37eaa1d97f4251aa2be2
SHA256

c86cec582d5f33a3b779d80cf48b59b4be08f0da97302c65f83eb4517d8efc35
SHA512

ee5c78e19eb563d79afe1911625566a6d7a0740bc4ce7d5e43565def0258ed6620fab29c5d91f13de27ec24905c5b261d9cff62e610add0e731a648d4cedd8bc
SSDEEP

6144:/rTfUHeeSKOS9ccFKk3Y9t9YZOnSpThQ/V8v+6DE:/n8yN0Mr8ZOYGtlR

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
2472	Isass.exe
1580	Isass.exe
2964	Isass.exe
2660	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Loads dropped DLL 9 IoCs

pid	Process
3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
2964	Isass.exe
2472	Isass.exe
2472	Isass.exe
2472	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-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
2472	Isass.exe
1580	Isass.exe
1580	Isass.exe
1580	Isass.exe
2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
2964	Isass.exe
2964	Isass.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2472	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	28
PID 3016 wrote to memory of 2472	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	28
PID 3016 wrote to memory of 2472	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	28
PID 3016 wrote to memory of 2472	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	28
PID 3016 wrote to memory of 1580	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	29
PID 3016 wrote to memory of 1580	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	29
PID 3016 wrote to memory of 1580	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	29
PID 3016 wrote to memory of 1580	3016	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	29
PID 1580 wrote to memory of 2740	1580	Isass.exe	30
PID 1580 wrote to memory of 2740	1580	Isass.exe	30
PID 1580 wrote to memory of 2740	1580	Isass.exe	30
PID 1580 wrote to memory of 2740	1580	Isass.exe	30
PID 2740 wrote to memory of 2964	2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	31
PID 2740 wrote to memory of 2964	2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	31
PID 2740 wrote to memory of 2964	2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	31
PID 2740 wrote to memory of 2964	2740	7a76aa8b66225720bac9d217e27aa3d0_exe32.exe	31
PID 2964 wrote to memory of 2660	2964	Isass.exe	32
PID 2964 wrote to memory of 2660	2964	Isass.exe	32
PID 2964 wrote to memory of 2660	2964	Isass.exe	32
PID 2964 wrote to memory of 2660	2964	Isass.exe	32

C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
"C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2472
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
    "C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2964
    - - C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe
        
        "C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe"
        5⤵
        Executes dropped EXE
        
        PID:2660

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

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\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

Download Submit
C:\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

Download Submit
\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

Download Submit
\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

Download Submit
\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

Download Submit
\Users\Admin\AppData\Local\Temp\7a76aa8b66225720bac9d217e27aa3d0_exe32.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

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

Filesize
216KB

MD5
dd5b5e4a1e6eeae101810f21c0790e86

SHA1
22013493fe1ab7e46a242f58b3cfb9d6f8f0026f

SHA256
89a6bac57d0981cbc24a178064e9e7ddb6ad23ff434b3bbb7c9dc46451b3d3fe

SHA512
1d78661c3e995119e594f51d93ea8c192f60557ad8804246b8100bf3997e6b320ddbe832caa59d259b122034e7d2fa114bf53afdaf33dae2538d738cc63f5da3

Download Submit
memory/1580-20-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1580-21-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1580-25-0x00000000047E0000-0x0000000005A89000-memory.dmp

Filesize
18.7MB

Download
memory/2472-48-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-63-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-95-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-83-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-79-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-71-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-17-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2472-70-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-36-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-37-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-16-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-60-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-42-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-43-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-57-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-49-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2472-51-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2740-39-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2740-24-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2964-35-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2964-29-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2964-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3016-1-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/3016-38-0x00000000047C0000-0x0000000005A69000-memory.dmp

Filesize
18.7MB

Download
memory/3016-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/3016-10-0x0000000004080000-0x0000000005329000-memory.dmp

Filesize
18.7MB

Download
memory/3016-19-0x00000000047C0000-0x0000000005A69000-memory.dmp

Filesize
18.7MB

Download
memory/3016-0-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download