hxxps://img[.]evbuc[.]com/https%3A%2F%2Fcdn[.]evbuc[.]com%2Fimages%2F647111119%2F1901805446443%2F1%2Foriginal[.]20231123-094846?w=1200&auto=format%2Ccompress&q=75&sharp=10&s=b09600b440995e8397e72f334e4aa3eb

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
23/11/2023, 13:33

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General

Target

https://img.evbuc.com/https%3A%2F%2Fcdn.evbuc.com%2Fimages%2F647111119%2F1901805446443%2F1%2Foriginal.20231123-094846?w=1200&auto=format%2Ccompress&q=75&sharp=10&s=b09600b440995e8397e72f334e4aa3eb

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 5 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-984744499-3605095035-265325720-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	firefox.exe
Token: SeDebugPrivilege	2748	firefox.exe
Token: SeDebugPrivilege	2748	firefox.exe
Token: SeDebugPrivilege	2748	firefox.exe
Token: SeDebugPrivilege	2748	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2748	firefox.exe
2748	firefox.exe
2748	firefox.exe
2748	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2748	firefox.exe
2748	firefox.exe
2748	firefox.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2748	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 3840 wrote to memory of 2748	3840	firefox.exe	34
PID 2748 wrote to memory of 2068	2748	firefox.exe	85
PID 2748 wrote to memory of 2068	2748	firefox.exe	85
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 1184	2748	firefox.exe	86
PID 2748 wrote to memory of 3100	2748	firefox.exe	87
PID 2748 wrote to memory of 3100	2748	firefox.exe	87
PID 2748 wrote to memory of 3100	2748	firefox.exe	87

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://img.evbuc.com/https%3A%2F%2Fcdn.evbuc.com%2Fimages%2F647111119%2F1901805446443%2F1%2Foriginal.20231123-094846?w=1200&auto=format%2Ccompress&q=75&sharp=10&s=b09600b440995e8397e72f334e4aa3eb"
1⤵
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url https://img.evbuc.com/https%3A%2F%2Fcdn.evbuc.com%2Fimages%2F647111119%2F1901805446443%2F1%2Foriginal.20231123-094846?w=1200&auto=format%2Ccompress&q=75&sharp=10&s=b09600b440995e8397e72f334e4aa3eb
  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:2748
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.0.867486348\210702906" -parentBuildID 20221007134813 -prefsHandle 1896 -prefMapHandle 1888 -prefsLen 20938 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {56795448-4a40-4cf7-9e83-99cea3c9c58f} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 1988 26df34b4858 gpu
    3⤵
    PID:2068
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.1.1637175881\1466334500" -parentBuildID 20221007134813 -prefsHandle 2384 -prefMapHandle 2328 -prefsLen 21754 -prefMapSize 232675 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ab6e7547-2da6-4df5-8eaf-41f88ea2af64} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 2420 26df21fe858 socket
    3⤵
    PID:1184
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.2.2028113975\573982310" -childID 1 -isForBrowser -prefsHandle 3368 -prefMapHandle 3384 -prefsLen 21792 -prefMapSize 232675 -jsInitHandle 1376 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {5d22fa73-c14d-4194-946b-027675721169} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 3356 26df6510f58 tab
    3⤵
    PID:3100
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.3.1816338302\1985999924" -childID 2 -isForBrowser -prefsHandle 3628 -prefMapHandle 3624 -prefsLen 26437 -prefMapSize 232675 -jsInitHandle 1376 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {62132cf4-b2b8-4fc5-bb98-f41e5407626b} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 3636 26df772a558 tab
    3⤵
    PID:4220
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.4.1023212661\879908582" -childID 3 -isForBrowser -prefsHandle 5060 -prefMapHandle 5064 -prefsLen 26671 -prefMapSize 232675 -jsInitHandle 1376 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ebf8a039-98a9-44bb-814a-607e193f8084} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 5076 26df8e41c58 tab
    3⤵
    PID:4992
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.5.1349262965\343455625" -childID 4 -isForBrowser -prefsHandle 5052 -prefMapHandle 5188 -prefsLen 26671 -prefMapSize 232675 -jsInitHandle 1376 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {fe671485-b75a-49e7-8c1a-d68fd4bc67d4} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 5212 26df8ec0258 tab
    3⤵
    PID:4440
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2748.6.353686174\1227152239" -childID 5 -isForBrowser -prefsHandle 5416 -prefMapHandle 5204 -prefsLen 26671 -prefMapSize 232675 -jsInitHandle 1376 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {9794dc5a-b9bc-461b-b7c3-3424fd370707} 2748 "\\.\pipe\gecko-crash-server-pipe.2748" 5404 26df8ec0858 tab
    3⤵
    PID:2928

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\err804pm.default-release\activity-stream.discovery_stream.json.tmp

Filesize
22KB

MD5
9dcd59647872a216489009ba8be36962

SHA1
25822ae542692eea03fc42722eccba676fd7a9c6

SHA256
ba7018fd6f2412926a6c6950a6d18d7b1d0ecff500a5650653ce58fb86848a33

SHA512
ed5a18fd688a9bb9d76e225fd9e08c38724e7a2a92de33d74e4f43fb93eae13df85eb7bbdec8c1832b680df239fd1aab36b7c6bd1a13b73b76897556bac50bba

Download Submit
C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\err804pm.default-release\cache2\entries\577A586685F8D27BD5B926CE96132B84424D8EA4

Filesize
13KB

MD5
758ce874b18e8b46cf815755e1f6ecb8

SHA1
5859bf7b445d89012e44b96ab027d9cca18c4232

SHA256
4a94a5340505c12e21aa9757e68931959d199aff531e310399024b0f2a119896

SHA512
2f2e0732258d044755af7c47d5ec9e9eb809a3276f099d96825c42de35f245b9dd3e00b345f48bc954e2460769aa21ad82972895cf2b8418b64077525535ac6d

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\err804pm.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\err804pm.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\err804pm.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\err804pm.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\err804pm.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\err804pm.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\err804pm.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\err804pm.default-release\prefs-1.js

Filesize
7KB

MD5
00918a034f253eba227cd9b91daa193c

SHA1
4d93bb44641fa726a32fb036d74a7738d7fb45de

SHA256
62117c999feefc73fcc5a690dc9572bb9fbe97516c63cc4eee2ff083bfe378d0

SHA512
4f3a6d735864c0f9f6fdf595cd83fa1c77bb06d8580cb71d574d5ab384306c696ba5a5cd7a51898a1f9567157997d21387801c45fb9013e14378619fb6c6718a

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\err804pm.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
15a06f7c5d59fb1ce1b5208d3f860468

SHA1
4d041734b1dc9d2c1a42921cab8a39413cdef07c

SHA256
dc2061c7512aa1fd01575e11f46f1aa1567b1fcf9fe8bcce292ed247c4be02cc

SHA512
efbb9778984f5a2a11b85ccc830049096f70ec240f901297f828021a6c1f07ee33daf05d5a4cf9283e07ce3e91896d0ddf2265355291f3d2905c127d17956be9

Download Submit