20b545c7b0b0cb56926972b7fc2a94f428b7aa3e4f9f4e65d1bd0ad800fb60b7

General

Target
OperaInstaller.exe
Size 178KB
Sample260809-pbs64szzgz
SHA256 20b545c7b0b0cb56926972b7fc2a94f428b7aa3e4f9f4e65d1bd0ad800fb60b7
MD5 4ef32b114eaa6f05340b46d0f48154c7
SHA1 a07219dc2a0fa96f5f9a03b1bb350c9ab2679d3f
SHA512 6631937f30fcfdc536bd14735870c9c4592f4414e9c1d71ec69c718bf341ff286174b782c6a23a6c29744be940bcac34aa93845e60727e090bee8423d738ea9d
SSDEEP 3072:IYHHEa1Lz5KhEwh5kc9+5sFoq0X/r6LGV4RxJ0OZnS+Rl//bRRlTHGVJp99vqRy:IYEwP5KhVyc9esFoBvum4RvGJTEy
TLSH
T1EB046B823AC184B5E5B244321864DBB19A7DFC700F65D9DB73987A3B5DB02C09932F6B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion discovery spyware stealer trojan

Malware Config

Signatures

Downloads MZ/PE file 1 IoCs

flow	pid	Process
13	3576	OperaInstaller.exe

Executes dropped EXE 6 IoCs

pid	Process
4556	OpInst.exe
1208	installer.exe
6072	installer.exe
2812	installer.exe
4936	installer.exe
4864	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
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 connected drives 3 TTPs 4 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
File opened (read-only)	\??\E:	installer.exe
File opened (read-only)	\??\F:	installer.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 2 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	OperaInstaller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OpInst.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	installer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	installer.exe

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	installer.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	installer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 4556	3576	OperaInstaller.exe	89
PID 4556 wrote to memory of 1208	4556	OpInst.exe	90
PID 1208 wrote to memory of 6072	1208	installer.exe	91
PID 1208 wrote to memory of 2812	1208	installer.exe	92
PID 1208 wrote to memory of 4936	1208	installer.exe	94
PID 4936 wrote to memory of 4864	4936	installer.exe	95

C:\Users\Admin\AppData\Local\Temp\OperaInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\OperaInstaller.exe"
1⤵
- Downloads MZ/PE file
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Users\Admin\AppData\Local\Temp\OpInst.exe
  "C:\Users\Admin\AppData\Local\Temp\OpInst.exe" --silent --allusers=0 --setdefaultbrowser=1
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe
    C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe --silent --allusers=0 --setdefaultbrowser=1 --server-tracking-blob=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
    3⤵
    - Executes dropped EXE
    - Enumerates connected drives
    - Enumerates system info in registry
    - Modifies system certificate store
    - Suspicious use of WriteProcessMemory
    PID:1208
  - - C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe
      C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\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=134.0.5954.46 --initial-client-data=0x2b4,0x2b8,0x2bc,0x288,0x2c0,0x7ff72675ad88,0x7ff72675ad94,0x7ff72675ada0
      4⤵
      Executes dropped EXE
      PID:6072
  - - C:\Users\Admin\AppData\Local\Temp\.opera\aa967b00-e0c8-4958-bfbe-5f15563fff6d Opera Installer Temp\installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\aa967b00-e0c8-4958-bfbe-5f15563fff6d Opera Installer Temp\installer.exe" --version
      4⤵
      Executes dropped EXE
      PID:2812
  - - C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe
      "C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe" --backend --install --import-browser-data=0 --enable-crash-reporting=1 --enable-stats=1 --enable-installer-stats=1 --consent-given=0 --general-interests=0 --general-location=0 --personalized-content=0 --personalized-ads=0 --launchopera=1 --showunbox=0 --installfolder="C:\Users\Admin\AppData\Local\Programs\Opera" --profile-folder --language=en --singleprofile=0 --copyonly=0 --allusers=0 --setdefaultbrowser=1 --pintotaskbar=1 --pintostartmenu=0 --run-at-startup=1 --show-intro-overlay --server-tracking-data=server_tracking_data --initial-pid=1208 --package-dir-prefix="C:\Users\Admin\AppData\Local\Temp\.opera\aa967b00-e0c8-4958-bfbe-5f15563fff6d Opera Installer Temp\opera_package_20260809131016" --session-guid=4fdee3d5-f613-4d57-8205-030f4623f11a --server-tracking-blob=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 --silent --desktopshortcut=1 --wait-for-package --initial-proc-handle=A407000000000000
      4⤵
      Executes dropped EXE
      Enumerates connected drives
      Enumerates system info in registry
      Suspicious use of WriteProcessMemory
      PID:4936
    - - C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe
        
        C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\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=134.0.5954.46 --initial-client-data=0x2ac,0x2b0,0x2c0,0x288,0x2c4,0x7ff72675ad88,0x7ff72675ad94,0x7ff72675ada0
        5⤵
        Executes dropped EXE
        
        PID:4864

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CB77E3D8FE906716C4DEE1FAFFCB74A5

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CB77E3D8FE906716C4DEE1FAFFCB74A5
Size 471B
SHA256 5ea73e46d4d2a45a24b689bd156e299ecf330317f54f087d1da238f060dc8ed2
MD5 b3da231c6d22b133cb9974e0b6927358
SHA1 30b6bf59f66bfb89b802cffe8e6f363d68b778b2
SHA512 28ec2ce730543f6d1b428d81c013926d72807f5897316f9c088ac1155f4e4cda5e084671d9806e2de8d2eea76c81ef3c1b119fd1727dd2448b5573827e2d67c6
TLSH
T1BEF0DCA268EEE8A56080C8AC25E145767816E02992A65142F01F04F08526AECAF3D536
MD5 SHA1 SHA512 TLSH

Submit Download

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CB77E3D8FE906716C4DEE1FAFFCB74A5

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CB77E3D8FE906716C4DEE1FAFFCB74A5
Size 416B
SHA256 cd0ad47453f734b2c52172fcbdbfb2b7d953ce6ec7c47b9a76440bedc6a8c27b
MD5 d2a21785870a872c3ff73e31ac9e06f2
SHA1 e25c3eb06f6a77b7975bd0bcc2c161fef457d683
SHA512 5498bf26320e3849437acd79feeabc3cbeb8c0caaa115a6e85c8a4da97dfb6270e81c029ab91333e51729748d764acf19aa5f5e54cb94702a6f8c7b2f4103bce
TLSH
T17AE0682515FA012FE2F4D4B48EDEA921099AF022045892B40AF067447603A00AE12A34
MD5 SHA1 SHA512 TLSH

Submit Download

installer.exe

Path C:\Users\Admin\AppData\Local\Temp\7zSCC1A21E9\installer.exe
Size 8.3MB
SHA256 c2a6825b895b245bab9774e69a450a11a4352eafa8d4da5fdad0e81341d4e67e
MD5 9dbf6590b693218b7ef20ae8de7eef6f
SHA1 6d8a4f3e48bbeab782da7166a8700bc35ad39416
SHA512 ebe898c89ec43db14a2744078941647737350cc27bb515fa83713e372576c0ce77e5ede72b227d2dfc369bca1c6244b3ceca5ee443259023c05d636ba81f8147
SSDEEP 98304:2h6i+ubH0SElWmLmgm3yrglOgw+Mne2ZQYNY8AFH:Ti+ubH0SElWEZmXFH
TLSH
T1EF967C53F2A601E8D06FCA748B7A523299757C464B31A3EF0A943A251E75FD46F3CB20
MD5 SHA1 SHA512 SSDEEP TLSH

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OpInst.exe

Path C:\Users\Admin\AppData\Local\Temp\OpInst.exe
Size 3.1MB
SHA256 dab3a0ad3307408203ffd3c3585c0a97487a60bd531e158855b82d05b1802593
MD5 f1883c146d2febccfdb87026d8f1f0cd
SHA1 a24c001c572cf72f7a84ade9e6e8b0bebd75f355
SHA512 1fd0980aee7ac70b63f1ef8a838448831bf9775a7bcf5428d431a1169310fcf31504ecee319a297849398f126904be06854ba0a640e2fbc434fde0a1de707e7d
SSDEEP 49152:tVAbwXR+eb2jcWlFwfYud53AgGKP9u1ce+UhAOlY+FGXVRrmUFLx:LAO6IWzwQuddo11ce+UnlpFGb
TLSH
T195E523127A81C835C5B311334F89F659A17DF9621F32D6CB37981A6F8EB06C09929F4B
MD5 SHA1 SHA512 SSDEEP TLSH

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bg.png

Path C:\Users\Admin\AppData\Local\Temp\bg.png
Size 224KB
SHA256 5fa976ea5780439175bb696817cd6eab3625ba5ccfe5b220587130ed5e1da855
MD5 21eb6b8232802f32b6483eedb96677bb
SHA1 b390f01600e521586e210936a4b57a6b89e66a7b
SHA512 5cfcb0278e5e7473dde396ee34115a3f50a9ad195d99b53cc5cc33a169a42c8f729806491fc0fb607719139081fa3c774c37b1638de1289b73c0c4c80768cfcd
SSDEEP 3072:7MuA+f6FJxlUhyLg2cugpbM5Q+jBre6cAJqmm6nkrw8sGaDy7y8bRzUnKdh8BfM9:7MuAWojcVdGSf+4BML49RzUnKUuLZ
TLSH
T1E92423876BC391F4590BD65FE9386BEC3CD4E7EC82AB113C931A42424D8416B85DE8F2
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 00f6ac1640d851a28c481df09f3bb469e2ecf4fbe07a39f35a5072b4485ac8f1
MD5 d6209fe93f75e42d8c4ab6a86227d4c5
SHA1 b0fc349abc8969ad69138f22dc147ca77754e888
SHA512 e87c19d37fabbeb59ff5e0c7096fcb46e052d06a464dbe61cd6e921cb87a0c45531bb16865a62a64b636bf36152856a5262d64065da105c6fff2891fd906e88e
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