6fa94d7e9e9117e2e85a6fbf24b58a30a4b4af5dfd8090a389c72f45416d1666

Analysis

max time kernel
148s
max time network
127s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
11/10/2026, 06:23

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General

Target
OperaSetup.exe
Size 3.1MB
Sample261011-g5vb9sda59
SHA256 6fa94d7e9e9117e2e85a6fbf24b58a30a4b4af5dfd8090a389c72f45416d1666
MD5 87518fefe9a0e185653375eea807af45
SHA1 330741a3a4c8cda4a9f73f4e01ede0d6b0bac31c
SHA512 8d5326ddb1f6b66fc9140560cb53f4566ef8bc7fb91911118f6911a660f9198894d0a6a566448382fe9e184365b6fe965ca3837599e09473edd32fc59ceff67a
SSDEEP 98304:gA/ASwXGBq5agAjW50kCOXpcYNbE+ykl4IyCDSU7y:iSwXBa9kCAcYNb1FDi
TLSH
T12CE52352B78184B5DA3301330F59EB995BBDB9710E7292C773986E3E8EB01829935F07
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion discovery spyware stealer

Malware Config

Signatures

Downloads MZ/PE file 1 IoCs

flow	pid	Process
16	5812	installer.exe

Executes dropped EXE 6 IoCs

pid	Process
5812	installer.exe
1884	installer.exe
5196	installer.exe
5752	Assistant_136.0.6008.52_Setup.exe_sfx.exe
3164	assistant_installer.exe
3316	assistant_installer.exe

Loads dropped DLL 4 IoCs

pid	Process
3164	assistant_installer.exe
3164	assistant_installer.exe
3316	assistant_installer.exe
3316	assistant_installer.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Writes a Windows system DLL name to a user directory 2 TTPs 1 IoCs

A module named after a system DLL outside System32 can be loaded instead of the real one by a program searching that directory.

defense_evasion

DLL Search Order Hijacking

T1574.001

Match Legitimate Name or Location

T1036.005

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\dbghelp.dll	Assistant_136.0.6008.52_Setup.exe_sfx.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	installer.exe
File opened (read-only)	\??\F:	installer.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	installer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	installer.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	Assistant_136.0.6008.52_Setup.exe_sfx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	assistant_installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	assistant_installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OperaSetup.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	installer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	installer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	assistant_installer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	assistant_installer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5812	installer.exe
5812	installer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3808 wrote to memory of 5812	3808	OperaSetup.exe	89
PID 5812 wrote to memory of 1884	5812	installer.exe	90
PID 5812 wrote to memory of 5196	5812	installer.exe	91
PID 5812 wrote to memory of 5752	5812	installer.exe	92
PID 5812 wrote to memory of 3164	5812	installer.exe	93
PID 3164 wrote to memory of 3316	3164	assistant_installer.exe	94

C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
"C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3808
- C:\Users\Admin\AppData\Local\Temp\7zS0EE743C8\installer.exe
  C:\Users\Admin\AppData\Local\Temp\7zS0EE743C8\installer.exe --server-tracking-blob=MGMwODJkOGNkMTkwMDk2OWM3NjkwZTJlZGMwNDU1Y2ZjZWNkMjJjM2ZmMDc4ODk0NGRkZjVmMzExMmUxOWVlODp7ImNvdW50cnkiOiJJVCIsImZhc3Rfb25ib2FyZGluZyI6e30sImluc3RhbGxlcl9uYW1lIjoiT3BlcmFTZXR1cC5leGUiLCJwcm9kdWN0Ijoib3BlcmEiLCJxdWVyeSI6Ii9vcGVyYS9zdGFibGUvd2luZG93cz91dG1fc291cmNlPUNPSU5JUyZ1dG1fbWVkaXVtPXBiJnV0bV9jYW1wYWlnbj1PUEVSQSZ1dG1fY29udGVudD0ySlJOSzJCXyZ1dG1faWQ9NzgwNDQ3NmI1N2IyNDRmZTgzNjEzNjkwODVmYjZjMjEiLCJ0aW1lc3RhbXAiOiIxNzkxNjg4OTU3LjU3NzUiLCJ1c2VyYWdlbnQiOiJNb3ppbGxhLzUuMCAoWDExOyBMaW51eCB4ODZfNjQpIEFwcGxlV2ViS2l0LzUzNy4zNiAoS0hUTUwsIGxpa2UgR2Vja28pIENocm9tZS8xNTUuMC4wLjAgU2FmYXJpLzUzNy4zNiIsInV0bSI6eyJjYW1wYWlnbiI6Ik9QRVJBIiwiY29udGVudCI6IjJKUk5LMkJfIiwiaWQiOiI3ODA0NDc2YjU3YjI0NGZlODM2MTM2OTA4NWZiNmMyMSIsIm1lZGl1bSI6InBiIiwic291cmNlIjoiQ09JTklTIn0sInV1aWQiOiIxNDllMDg4Mi0yYWIyLTQ1YjctOTU4MC0wZjg3OTMxYzE2YWIifQ==
  2⤵
  - Downloads MZ/PE file
  - Executes dropped EXE
  - Enumerates connected drives
  - Reads the TCP/IP host and domain name from the registry
  - Enumerates system info in registry
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5812
- - C:\Users\Admin\AppData\Local\Temp\7zS0EE743C8\installer.exe
    C:\Users\Admin\AppData\Local\Temp\7zS0EE743C8\installer.exe --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win64 --annotation=prod=OperaDesktop --annotation=ver=137.0.6036.39 --initial-client-data=0x2ac,0x2b0,0x2b4,0x288,0x2b8,0x7ff6241009d8,0x7ff6241009e8,0x7ff6241009f8
    3⤵
    - Executes dropped EXE
    PID:1884
- - C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\installer.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\installer.exe" --version
    3⤵
    - Executes dropped EXE
    PID:5196
- - C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\Assistant_136.0.6008.52_Setup.exe_sfx.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\Assistant_136.0.6008.52_Setup.exe_sfx.exe"
    3⤵
    - Executes dropped EXE
    - Writes a Windows system DLL name to a user directory
    - System Location Discovery: System Language Discovery
    PID:5752
- - C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\assistant_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\assistant_installer.exe" --version
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Enumerates system info in registry
    - Suspicious use of WriteProcessMemory
    PID:3164
  - - C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\assistant_installer.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=136.0.6008.52 --initial-client-data=0x24c,0x250,0x254,0x228,0x258,0xa3c9cc,0xa3c9d8,0xa3c9e4
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:3316

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Hijack Execution Flow

T1574

DLL Search Order Hijacking

T1574.001

Privilege Escalation

Hijack Execution Flow

T1574

DLL Search Order Hijacking

T1574.001

Defense Evasion

Hijack Execution Flow

T1574

DLL Search Order Hijacking

T1574.001

Masquerading

T1036

Match Legitimate Name or Location

T1036.005

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

additional_file0.tmp

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\additional_file0.tmp
Size 2.9MB
SHA256 30786977e61add36f7c641facfb7fce1b2ec7c2a0a7e055a172f127a68788556
MD5 cca6f6c0abc234866a5ea00e97d1745a
SHA1 6ebf31a5ea9b2d89a21fc565591185ee93493553
SHA512 01b9b870d6ac45f9908c6119d48bb82b2957aae2d4d72153da5efa81ca97a4f13136fdb24bbf1ac8ab2defa094a573e2137c1202f324fb9b6453c5c79fae6cb8
SSDEEP 49152:3kinowp5Tl8RRjPXnYcilTS8rmJ6e99FiHgfCNJwFdIKLpUCHSa2PNvVseb:3kio+UDil+smJ6es2I3PPpVLb
TLSH
T142D52330B9D48870C32756338DA1F7AE55BEB6B0473989D773980B8EDFB15C39A26406
MD5 SHA1 SHA512 SSDEEP TLSH

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assistant_installer.exe

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\assistant_installer.exe
Size 2.4MB
SHA256 e8dce277d6edb918499526fadba9902e317496c2af077219f263a7a643467824
MD5 81a58f8ff0989c0089e24dfa658dccfe
SHA1 7db84aa7d78ca19a25f5d2db30f169590af165c1
SHA512 e91f4faed65a043cfa7e350441d5c5849b81798951d574e8b42330e1d645b1e4cbbd33315fa1aac258e00b9883dfa8c3d865164c07d7d498e98f4c754c6779cf
SSDEEP 49152:4fuSIF/tZVHY1OADJCH/wmQ5ofRUwzcvz86eCkWI37aVU:4GSIF/fVHY1O2o/rhRzzcvzRetjGi
TLSH
T176C5AE02B99094B5DCA63032721CE77D9A355E114F364EC7AA90BCC17FB4AD2613B78B
MD5 SHA1 SHA512 SSDEEP TLSH

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browser_assistant.exe

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\browser_assistant.exe
Size 5.3MB
SHA256 f399f3c94ce8b3d6666a8f19a0c33d1e3e0b09ceef4887d323e7c4a35cfbd686
MD5 1190287cf70a9c1f8d1419bb8a1578ab
SHA1 8f2157812920d792afda16b1635704382d7690e7
SHA512 5f18f396777ae25915d90854c4309800ffb8e17802aae9011d50d3c2c8af045f07d4dfbf6ff0d5e4e4babebe0643ae122e28d9a02a36e718bae9150a7e77def8
SSDEEP 98304:V6666666666666666666666666666666x666666666666666fwwwwwwwwwwwwwwO:l1J1aqNY52B3EjP6Li9WyVjYr7GX
TLSH
T19046BF53B711207CC84B68B2643C6F7B8C291D63972187DB89E83CA25B749C26A3D75F
MD5 SHA1 SHA512 SSDEEP TLSH

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dbgcore.DLL

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\dbgcore.DLL
Size 196KB
SHA256 c16220edd3787da33dbd3ac2fcbec7de6a13e2baf14ae6105bba68d4efd83628
MD5 84d406838e3b80a2668c466ca5cc8e57
SHA1 bb60b9c299f28bc05eb7a29dd19ad64b37c612cb
SHA512 b5261aadb18743835bcba65b2f5aee0b888e8b7c6bff21deeeac546236ac892ac00722c2d486dbab969f8bef8957ca9576dc5301780ffe088fd5065b6c57a84e
SSDEEP 6144:zASh0NdOkBakZykbp/eyhr+SJors+k0L3nTI:WYIqFLnTI
TLSH
T1DE148D6296840833DD9F11B8B29F333795FEAFB0139194D362509AE4E5647C06E3A2DF
MD5 SHA1 SHA512 SSDEEP TLSH

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dbghelp.dll

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\dbghelp.dll
Size 1.8MB
SHA256 990b13e88b4a9985eb5c596078e2ec26a0edcc22169dd71f8a84c7943005306c
MD5 c903c1fd205157a96848017f1cc5f245
SHA1 1eefb8e49a4c663253e75e7a862d11524a88525b
SHA512 f9e5a1f03f18b226a9e3d694aac4220c806cc30dab0fe951dab1c62dabcf9c937efb79b4c4a469966a141b49aa358a492ada771d67426fbe025d59b25e51f705
SSDEEP 24576:zDOSE7VspFPxh+EqYbt6lyn2GyQWKACVOxHTdMgh9IVbMAQyvyXiuVKHeeKKwsfq:zqhRcFPxhHYCBRnyHO6W6NIyX/kQs2x
TLSH
T101856A20E784813CE4EA0177E67D7A79866DE134073440CBAAD45B69782D7C3AF386DB
MD5 SHA1 SHA512 SSDEEP TLSH

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files_list

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\assistant\files_list
Size 72B
SHA256 5b3741e12f14d0ae54d450fff585c5fbfa7b360800c863722472d320c26b4ef4
MD5 7c375531029e3e1e14e204850417eb74
SHA1 086ccee638fbb7dcad3d21627c4f32386490f456
SHA512 8411bf285d334a51b51993487148d0b53f6cf9439a9250b71cce9718250bbb226825e3a1be832443b84ace59e43f3fb77c4f4741f0d376543ca32d9ab40f4a67
TLSH
T169A00204C51E089CAFC53595831146FF67D765145AB89655075F10CC5926027478F776
MD5 SHA1 SHA512 TLSH

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de932af914ba00303d4a2778a383ac9c831101e2.crx

Path C:\Users\Admin\AppData\Local\Temp\.opera\65e66228-c2b4-4feb-a30b-adaa46b7e099 Opera Installer Temp\opera_package_202610110725331\de932af914ba00303d4a2778a383ac9c831101e2.crx
Size 4.6MB
SHA256 7709b01cae20a411b72b40ce900b0058c6dd03167d05da7e42bf3d95ceffd582
MD5 fe6976c615843dcb0bd9f173ba511529
SHA1 6859fbcde51e84755eb3874b4300ea0775b55bef
SHA512 91746c45bc6f8f5a601a47e6807c9aa084dae82d5753bc3cdc30cf0fb890a63b45de90017838acf3a4fb566454b9c936d9f135d160e5314638237319a7f62b41
SSDEEP 98304:MRxlMPmUWhtGP0nb/OEOQKgk/DJscwZjPE40UKrbw35VL6:MiP7WKP0rOQKgCJKE40pE3TL6
TLSH
T1D126337967BDA520EE57CA7E58244AB10B740403C4CAFC7FB87221221C83FD8DB9956E
MD5 SHA1 SHA512 SSDEEP TLSH

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installer.exe

Path C:\Users\Admin\AppData\Local\Temp\7zS0EE743C8\installer.exe
Size 8.4MB
SHA256 c2ac35ff3a7e38118be30262da2ba076470c58c10aa7f9a7e5c3b7ce15c73f1b
MD5 c959f7c7f050a3a2a6a62d7c39c72c54
SHA1 c35baf638ca05483677abfee65c6acd86854d5e8
SHA512 f97cd4fa507e311f60537d9fd9ee7d98423e7decdf4b714c0623923a691ee766500d5c38a5614d92045f78f9dd4a91e4157f4ac7fe9cd6740c6b52bbcabe61c4
SSDEEP 98304:e7HSf2kV8mZz2FdbUUivLCYpj9rb/XniScYNY8AFi:QHSfD32FBJA9/3rcXFi
TLSH
T1FF968C53F3AA01E8D06FDA748B7A563299357C464B30A3DF0A943A250E75FD46B3DB20
MD5 SHA1 SHA512 SSDEEP TLSH

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settings.dat

Path C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat
Size 40B
SHA256 c4052f745e2fa567f55f8419ccfb8ea7a68df5d55de8c1465996555248be9458
MD5 c92a1413944889207ab9adf3b95e0e9a
SHA1 ca1b0af520252933deec0118b4ef1d1ba3b2e496
SHA512 975aa3f2d61b2dba404b4fb32112ee23396f324b0eb7b9d28e97dfb84d9d03681db785d4a4be37d04935b8750ab7d12442d8274a10d1e0363e1b536f44797f16
MD5 SHA1 SHA512

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads