5881269e65d2047768b343657f7b84be0c0dcface2984e60bf6b740e7b82e9c9

General

Target
OperaSetup.exe
Size 3.1MB
Sample260719-amsmdsf14r
SHA256 5881269e65d2047768b343657f7b84be0c0dcface2984e60bf6b740e7b82e9c9
MD5 c2879aa0a1fc71222ee0cae80f2c71b7
SHA1 471504aa6e218a15a379509ab1e756a645ec205b
SHA512 6cddf9f7517d3305655b059ccbbd6887293d613db3f2720e98336301fa15a4f57fefb4b645a739bfffe7c89685689e2765153b06dacea1acab055a715411681c
SSDEEP 49152:qVAbwuyoi3J6ASyDIlP/QzwFxZ+GNPxuTFxOUzJGUPNfaalL46HLXyDpJywuTIWN:+AtypYPV5JNZKNzcUPtVuDhMvhH
TLSH
T149E52312B781D475CA7325320F45E764A7ADFD611F32899B77881A6F4EF0281AB32F06
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
2760	installer.exe
4512	installer.exe
3180	installer.exe
6140	Assistant_130.0.5847.41_Setup.exe_sfx.exe
4528	assistant_installer.exe
3728	assistant_installer.exe

Loads dropped DLL 4 IoCs

pid	Process
4528	assistant_installer.exe
4528	assistant_installer.exe
3728	assistant_installer.exe
3728	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

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

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	OperaSetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Assistant_130.0.5847.41_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

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
2760	installer.exe
2760	installer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 2760	4808	OperaSetup.exe	89
PID 2760 wrote to memory of 4512	2760	installer.exe	90
PID 2760 wrote to memory of 3180	2760	installer.exe	91
PID 2760 wrote to memory of 6140	2760	installer.exe	92
PID 2760 wrote to memory of 4528	2760	installer.exe	93
PID 4528 wrote to memory of 3728	4528	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:4808
- C:\Users\Admin\AppData\Local\Temp\7zS8C27E6A9\installer.exe
  C:\Users\Admin\AppData\Local\Temp\7zS8C27E6A9\installer.exe --server-tracking-blob=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
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Enumerates system info in registry
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Users\Admin\AppData\Local\Temp\7zS8C27E6A9\installer.exe
    C:\Users\Admin\AppData\Local\Temp\7zS8C27E6A9\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=133.0.5932.60 --initial-client-data=0x2b4,0x2b8,0x2bc,0x290,0x2c0,0x7ff63e1aad88,0x7ff63e1aad94,0x7ff63e1aada0
    3⤵
    - Executes dropped EXE
    PID:4512
- - C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\installer.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\installer.exe" --version
    3⤵
    - Executes dropped EXE
    PID:3180
- - C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\Assistant_130.0.5847.41_Setup.exe_sfx.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\Assistant_130.0.5847.41_Setup.exe_sfx.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6140
- - C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\assistant_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\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:4528
  - - C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\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=130.0.5847.41 --initial-client-data=0x24c,0x250,0x254,0x228,0x258,0xd64040,0xd6404c,0xd64058
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:3728

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

2

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

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Downloads

additional_file0.tmp

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\additional_file0.tmp
Size 2.8MB
SHA256 71a4cc628fd1716fd994689c4808d2ebbc00e8bd2ecb7600b9921baa8916c752
MD5 3b028b1188ac321e66add16f8ebadbec
SHA1 086bcb2b1c0d300be15c1390841aadadcec4eac7
SHA512 17c390e0df8e29ff9ad43e581db298ada2d8378fbb890dc5f4b17df8fbe21134f99ab203ea4752a419215d289c128a1d8bc14721bde80042e5bb4c3901dffb72
SSDEEP 49152:+kinoIZOrzV7AlDfo7eT/uAtH00raHx774jx4aGhcr0glyGIGE1HVyVNW272DS/Z:+kiocQzV89Tmeradk2ha0gdIT11yVQ2w
TLSH
T167D5233275A48C34D62312321CE0FAEDA5BE72701E6347DB73A42B1F9EB01979A1D562
MD5 SHA1 SHA512 SSDEEP TLSH

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assistant_installer.exe

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\assistant_installer.exe
Size 2.4MB
SHA256 63187b388e01fb05d8c29957e1c566324af67aff2f7a2e3da9132248c79375a8
MD5 b0408fa2a406f483e42c3ac102d35e9b
SHA1 fbaca900ad54abc65ec2cb34d63727c87132d16b
SHA512 2e8b9af626fff68ecd0204d6a3151b4518749143ec78a2f8f99f959399d1c8ea59987f99c38c9e48fe38b518fd8c91381356daf3f17944fa3432337b882e5401
SSDEEP 49152:wJv8lBbu91xwyiZSwRDzWEibQojjHLQDpizF:wR8lBbu91xwyiZSwRWEKQWjHLOpc
TLSH
T10AC5AE12A86094B5D8563132321DEB3E9A30BE1657354DDBDB90BCC1BBB86E2353734B
MD5 SHA1 SHA512 SSDEEP TLSH

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browser_assistant.exe

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\browser_assistant.exe
Size 5.3MB
SHA256 fdd6f367514a8c44bedd7d8cae73120bcab054975df41be2a38f082b9521746a
MD5 120b5539ce7123698f17dfe49977f6e0
SHA1 20fcf9b525b48ccecc40fb6e82aa99d086fe63ca
SHA512 171c79b08816ddc655ea65866f467e26c1628051f973144ff80d705f97201ed071b8e19b22ace834a8f1e44c823ff1d1d8e282ea7a6a7c8b88ec8622a48e2c30
SSDEEP 98304:P6666666666666666666666666666666x666666666666666fwwwwwwwwwwwwwwS:baFDasWTMzz4/qyOwHqBt8Zh9RQl
TLSH
T1ED46AF62F6116074C81EA471383D7B7F68296D23D72187DB8DD83CA06F746C2263EB96
MD5 SHA1 SHA512 SSDEEP TLSH

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dbgcore.DLL

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\dbgcore.DLL
Size 222KB
SHA256 7bb46348c2ec97ef9ee7a8e0ae28c8e069513e8acaee2689134a2d906b5fdecf
MD5 b26ebc5cde9b1726ee9f9534dd6107d0
SHA1 de00af3ec4de63a158bcd50c6e95b046669d3353
SHA512 2e01c65b58369c1f5f4081cf377c3fedd87ae5fca63cfbc44dd7859a1e10a849d1bbdbb592349d793166f577dbd954cd8660f625dcbc9adc4d936d6a44f062bf
SSDEEP 6144:FASh0NdOEQzFh0ekr6nzwBaQGdppLIg2dFl96Fl:4MHZn1n+P96Fl
TLSH
T14C247C2269401533DCEF12F062AF363A96AEDD90239490C359A05BDDD6D4BC12E3D6EF
MD5 SHA1 SHA512 SSDEEP TLSH

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dbghelp.dll

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\dbghelp.dll
Size 1.8MB
SHA256 6fd2b4bfc275ed306ce09008ff8437818b3373e69e4b3db3cbb79be91b2b9308
MD5 021b11c0fc1a09e49a2046ef07d1747a
SHA1 4b955c1e7150db4f07528929fc529fde9738a2b3
SHA512 6ca94fdf2b92928859152aa23f31df46944eeeac7988f6bb5d647341843d8d2aa91c2c810d17c8b58a03c99e4ca7d7e1ae6b6c2d9ea5029616d870b89794d6c8
SSDEEP 49152:xEDlXSohR86M5NKBlv/2yOFVnzM9F0KM7:uFhR86MHyl0fb
TLSH
T128856B20E784813CE4EA1177E67C7A7D85ADE524073440CBAAC45BA978297D32F387DB
MD5 SHA1 SHA512 SSDEEP TLSH

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files_list

Path C:\Users\Admin\AppData\Local\Temp\.opera\4a172103-e5e5-4eb4-95a5-010fec8d7a77 Opera Installer Temp\opera_package_202607190120141\assistant\files_list
Size 72B
SHA256 5b3741e12f14d0ae54d450fff585c5fbfa7b360800c863722472d320c26b4ef4
MD5 7c375531029e3e1e14e204850417eb74
SHA1 086ccee638fbb7dcad3d21627c4f32386490f456
SHA512 8411bf285d334a51b51993487148d0b53f6cf9439a9250b71cce9718250bbb226825e3a1be832443b84ace59e43f3fb77c4f4741f0d376543ca32d9ab40f4a67
TLSH
T169A00204C51E089CAFC53595831146FF67D765145AB89655075F10CC5926027478F776
MD5 SHA1 SHA512 TLSH

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installer.exe

Path C:\Users\Admin\AppData\Local\Temp\7zS8C27E6A9\installer.exe
Size 8.3MB
SHA256 fe71363fe15584aff60b1ede75fa9295337f65229e4f32505c601f3fd0e9d2b5
MD5 046b6b37f71c386e733a4d386f9ef1b9
SHA1 32661dcea8aff4983aa06108a93157cd41f7c5e4
SHA512 7e9d3527368e46dcf02b29718e400099d3694040c2c252f97c6039a3b6cd87b44cf5efa7b4dbd190b2b2d856413f66c545f8c6d91501adac825b4431fe3323bb
SSDEEP 98304:a/06Gb0nT7ePcI/Ztlg1RbdsuJXMZ+AUYNY8AF7:I03b0Xex/zwVC+RXF7
TLSH
T1EB967C53F2E601F8D06FDA748B7A5232A9357C464B35A2EF0A9436251E71FD46B3CB20
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 c136e40472135e53a9129a7bc31b83972f7b08a8613736e4b9a84739e468a126
MD5 ce99ec18523829f83d0cc13fc5d0ae34
SHA1 f8ca971ae1c41694d6cf913c2ede6ddf94b26722
SHA512 d1682977a878eb05d6cbfd01858456b4e998d3cd4862506fb6e7199c0318822ed1315ca4a71d1507754213b2b50f3b93cfdb867b3db171fd6ad959ae695b9b30
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