hxxps://eu-central-1[.]fybeobjects[.]com/8f4616b785e447c1a34856a190cc6f4c[:]ctyoo/main[.]html

Analysis

max time kernel
121s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
14/05/2024, 06:00

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General

Target

https://eu-central-1.fybeobjects.com/8f4616b785e447c1a34856a190cc6f4c:ctyoo/main.html

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	firefox.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	872	firefox.exe
Token: SeDebugPrivilege	872	firefox.exe
Token: SeDebugPrivilege	872	firefox.exe
Token: SeDebugPrivilege	872	firefox.exe
Token: SeDebugPrivilege	872	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
872	firefox.exe
872	firefox.exe
872	firefox.exe
872	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
872	firefox.exe
872	firefox.exe
872	firefox.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
872	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 2276 wrote to memory of 872	2276	firefox.exe	79
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 4804	872	firefox.exe	82
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83
PID 872 wrote to memory of 2376	872	firefox.exe	83

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "https://eu-central-1.fybeobjects.com/8f4616b785e447c1a34856a190cc6f4c:ctyoo/main.html"
1⤵
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url https://eu-central-1.fybeobjects.com/8f4616b785e447c1a34856a190cc6f4c:ctyoo/main.html
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:872
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.0.1337559881\114256193" -parentBuildID 20230214051806 -prefsHandle 1764 -prefMapHandle 1756 -prefsLen 22074 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {fda8e78d-267e-4ebe-b970-41943ef72fe4} 872 "\\.\pipe\gecko-crash-server-pipe.872" 1856 1b1c380f758 gpu
    3⤵
    PID:4804
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.1.1830288159\1357283085" -parentBuildID 20230214051806 -prefsHandle 2372 -prefMapHandle 2368 -prefsLen 22925 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {81aa5378-0820-44ae-a8c8-ff03a12d5294} 872 "\\.\pipe\gecko-crash-server-pipe.872" 2392 1b1b6c88c58 socket
    3⤵
    PID:2376
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.2.776092381\394041743" -childID 1 -isForBrowser -prefsHandle 2852 -prefMapHandle 2912 -prefsLen 22963 -prefMapSize 235121 -jsInitHandle 1304 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {18796948-4613-4a54-b716-8fefadd5cf2f} 872 "\\.\pipe\gecko-crash-server-pipe.872" 2804 1b1c3f30e58 tab
    3⤵
    PID:2564
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.3.51609790\1322058189" -childID 2 -isForBrowser -prefsHandle 3664 -prefMapHandle 3660 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1304 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {6e62a0ff-2de9-41c6-b29c-cd2c2ed05963} 872 "\\.\pipe\gecko-crash-server-pipe.872" 3672 1b1c953fd58 tab
    3⤵
    PID:592
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.4.407363878\1715418025" -childID 3 -isForBrowser -prefsHandle 5132 -prefMapHandle 4768 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1304 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {078192ba-56df-4d5e-af26-206ad6efcecf} 872 "\\.\pipe\gecko-crash-server-pipe.872" 5140 1b1cb6f6558 tab
    3⤵
    PID:4344
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.5.1583617486\917202162" -childID 4 -isForBrowser -prefsHandle 5284 -prefMapHandle 5288 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1304 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {1b1d517c-9a87-44d2-8abb-18e91479b0f2} 872 "\\.\pipe\gecko-crash-server-pipe.872" 5276 1b1cb6f7d58 tab
    3⤵
    PID:4640
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="872.6.1415726838\416694813" -childID 5 -isForBrowser -prefsHandle 5536 -prefMapHandle 5540 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1304 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {dbc98241-3642-4573-aa99-87abcc473c71} 872 "\\.\pipe\gecko-crash-server-pipe.872" 5524 1b1cb6f9258 tab
    3⤵
    PID:3352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9w3t05jh.default-release\activity-stream.discovery_stream.json.tmp

Filesize
23KB

MD5
14c54cb40d089c7b89885a5385db64f5

SHA1
e467f8c77008d710d0c092cccb1d2633010eb270

SHA256
0a8d58566273fb2804aa685b351e5284d32efea8c743a0257e78d64cdc9b4435

SHA512
f98b9b447187a958cf7a90f8e11d4dbfb1add7e8c08db060a57045c4ca6f88ad5ab02d8338443fc55f551dec25356bbade560e041490c99821414f97c98e46b6

Download Submit
C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9w3t05jh.default-release\activity-stream.discovery_stream.json.tmp

Filesize
24KB

MD5
32622d4865ee539644ad28a3a3614455

SHA1
26ab46b44595d3ca85dee837694e76e71b8b428c

SHA256
4036d6ceec398b77524331f101029d658a4f8defb58fc69cfb5da5ff551f45ad

SHA512
2073c7a322e48964bcdba5993a950648e42bb451c98c66ca23ed72b78e2fbb05e17d3b033239a22247c3d6e5e249243fca30bdfdef0e12ed4e007da2e0aba6b3

Download Submit
C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9w3t05jh.default-release\cache2\entries\F4EFE37A30D0F14C6AC03FF7949A51CBC2EBC649

Filesize
13KB

MD5
aca9efc16888e85dcf5158e4dacfacb1

SHA1
076cbae9e72704261ba2a08f9d794cd43e652b72

SHA256
2224527622c5db9c42dd1e6ca29550de7b89f4d19b0a00b16d5edaed7bdf5ea4

SHA512
01e7bc8da434bbca220613223a0209ab9403c96e6d207167b8f21b8eb0a0ebcba8e2621922ff5516653db40e44fa560e9e51cf2fa4216a116b7bc82da04dac42

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpaddon

Filesize
442KB

MD5
85430baed3398695717b0263807cf97c

SHA1
fffbee923cea216f50fce5d54219a188a5100f41

SHA256
a9f4281f82b3579581c389e8583dc9f477c7fd0e20c9dfc91a2e611e21e3407e

SHA512
06511f1f6c6d44d076b3c593528c26a602348d9c41689dbf5ff716b671c3ca5756b12cb2e5869f836dedce27b1a5cfe79b93c707fd01f8e84b620923bb61b5f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpaddon-1

Filesize
8.0MB

MD5
a01c5ecd6108350ae23d2cddf0e77c17

SHA1
c6ac28a2cd979f1f9a75d56271821d5ff665e2b6

SHA256
345d44e3aa3e1967d186a43d732c8051235c43458169a5d7d371780a6475ee42

SHA512
b046dd1b26ec0b810ee441b7ad4dc135e3f1521a817b9f3db60a32976352e8f7e53920e1a77fc5b4130aac260d79deef7e823267b4414e9cc774d8bffca56a72

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.dll

Filesize
997KB

MD5
fe3355639648c417e8307c6d051e3e37

SHA1
f54602d4b4778da21bc97c7238fc66aa68c8ee34

SHA256
1ed7877024be63a049da98733fd282c16bd620530a4fb580dacec3a78ace914e

SHA512
8f4030bb2464b98eccbea6f06eb186d7216932702d94f6b84c56419e9cf65a18309711ab342d1513bf85aed402bc3535a70db4395874828f0d35c278dd2eac9c

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.info

Filesize
116B

MD5
3d33cdc0b3d281e67dd52e14435dd04f

SHA1
4db88689282fd4f9e9e6ab95fcbb23df6e6485db

SHA256
f526e9f98841d987606efeaff7f3e017ba9fd516c4be83890c7f9a093ea4c47b

SHA512
a4a96743332cc8ef0f86bc2e6122618bfc75ed46781dadbac9e580cd73df89e74738638a2cccb4caa4cbbf393d771d7f2c73f825737cdb247362450a0d4a4bc1

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\LICENSE.txt

Filesize
479B

MD5
49ddb419d96dceb9069018535fb2e2fc

SHA1
62aa6fea895a8b68d468a015f6e6ab400d7a7ca6

SHA256
2af127b4e00f7303de8271996c0c681063e4dc7abdc7b2a8c3fe5932b9352539

SHA512
48386217dabf7556e381ab3f5924b123a0a525969ff98f91efb03b65477c94e48a15d9abcec116b54616d36ad52b6f1d7b8b84c49c204e1b9b43f26f2af92da2

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\manifest.json

Filesize
372B

MD5
8be33af717bb1b67fbd61c3f4b807e9e

SHA1
7cf17656d174d951957ff36810e874a134dd49e0

SHA256
e92d3394635edfb987a7528e0ccd24360e07a299078df2a6967ca3aae22fa2dd

SHA512
6125f60418e25fee896bf59f5672945cd8f36f03665c721837bb50adf5b4dfef2dddbfcfc817555027dcfa90e1ef2a1e80af1219e8063629ea70263d2fc936a7

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll

Filesize
11.8MB

MD5
33bf7b0439480effb9fb212efce87b13

SHA1
cee50f2745edc6dc291887b6075ca64d716f495a

SHA256
8ee42d9258e20bbc5bfdfae61605429beb5421ffeaaa0d02b86d4978f4b4ac4e

SHA512
d329a1a1d98e302142f2776de8cc2cd45a465d77cb21c461bdf5ee58c68073a715519f449cb673977288fe18401a0abcce636c85abaec61a4a7a08a16c924275

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.lib

Filesize
1KB

MD5
688bed3676d2104e7f17ae1cd2c59404

SHA1
952b2cdf783ac72fcb98338723e9afd38d47ad8e

SHA256
33899a3ebc22cb8ed8de7bd48c1c29486c0279b06d7ef98241c92aef4e3b9237

SHA512
7a0e3791f75c229af79dd302f7d0594279f664886fea228cfe78e24ef185ae63aba809aa1036feb3130066deadc8e78909c277f0a7ed1e3485df3cf2cd329776

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.sig

Filesize
1KB

MD5
937326fead5fd401f6cca9118bd9ade9

SHA1
4526a57d4ae14ed29b37632c72aef3c408189d91

SHA256
68a03f075db104f84afdd8fca45a7e4bff7b55dc1a2a24272b3abe16d8759c81

SHA512
b232f6cf3f88adb346281167ac714c4c4c7aac15175087c336911946d12d63d3a3a458e06b298b41a7ec582ef09fe238da3a3166ff89c450117228f7485c22d2

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\prefs-1.js

Filesize
10KB

MD5
0548b62c6aef17a74788a96f197a633f

SHA1
6b1ddb2fead9ea02f2f00a0d36cd383d03dbb170

SHA256
7f30ac51b3387c4188d492ec01586bded732855dd5f9a22ee037058817e630c8

SHA512
d1e2e459a000a91c5ebd4015b581070bfd64f2e5083968e586439367eb2c2de39b13a1b87af5650c27653e3f6ebfd20d95da2418fe57d0be63de86f0cee78e6e

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\prefs-1.js

Filesize
8KB

MD5
41c6cd3b627a40367ca8d346205332c6

SHA1
db59fa38d73cfc38ec86fd6b0abd2cc900833ca8

SHA256
80908e7005ec125ccceea4e85db3014e97d5e22bc9d4ec93cdee57274be58275

SHA512
0211f8da78bc6eaf82cbe957cdec4ca6b33742e5e4e88181afc8335f31064705be6ee122cd15061770a567c0c65d8c1d5367584aaeaa993b4756ab6a3a0f4313

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
152d3189d49fd8681afa60fff188a2a2

SHA1
501c3056bbc8421c216cc5f571dfd4c320cab36a

SHA256
310f7eff3e186adb0f71cd274a723d9fcc1b8abebf7597ae4e00f3557ef06744

SHA512
06431d894f62409b845cab7ad3a238f61b2ee8328a9fde879f588b114c055fcffc4dacadd89ed8538ae2282bd0cdfd3f692f34da1f8782e9afaccf0a06eadc62

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
9d4b02222c4aa8cfe82bdedb99a2b59f

SHA1
7a73dfed722ea980079e98389ac06442bd0e97b4

SHA256
0cddf58040328068f12924c97147546d2360cc355f4741feedcd4ef060ee5a2a

SHA512
9ed657f280d5f5ad504519622f9d68c843299d01fc1dea2610c339f484b9ddb489e5656ba72ee4000d6ef39c5f74000172e254374b2366b7dc859d4ee83df359

Download Submit