cdde55ba032bc04a14ec9db96c0083b0b1ba15456d96b29988208030392b56b1

Resubmissions

03/05/2023, 09:20

230503-la2kbaga2t 3

03/05/2023, 09:16

230503-k8lq3seb52 3

Analysis

max time kernel
44s
max time network
46s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2023, 09:16

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General

Target

0-255.pbf
Size

73KB
MD5

2b5e5142ea2c9322aeb61fd5dbd7c969
SHA1

b58544d7fa81ad0c026f5b5e49ac56ddfa228c02
SHA256

a79452d99a609ea5b21c084672e13fd726c329dfa1d29d07a4288c9d9ad554bc
SHA512

6944dea0008535ec8f7a0c3cb1e14327453d704607a741e4b8dbd9f6e387c39282707f795f9428bef2ff814fac055d5bfc8cb4c43f15a2968c60c4153ab4dc73
SSDEEP

1536:iTNjO5pO66eLfQ/qVezMOJAiCMDfAzCVE:cjSpOko/tMH/

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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\~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
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

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4824	firefox.exe
Token: SeDebugPrivilege	4824	firefox.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
4824	firefox.exe
4824	firefox.exe
4824	firefox.exe
4824	firefox.exe
4824	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4824	firefox.exe
4824	firefox.exe
4824	firefox.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
1164	OpenWith.exe
4824	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 2764	1164	OpenWith.exe	89
PID 1164 wrote to memory of 2764	1164	OpenWith.exe	89
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4708 wrote to memory of 4824	4708	firefox.exe	97
PID 4824 wrote to memory of 4332	4824	firefox.exe	98
PID 4824 wrote to memory of 4332	4824	firefox.exe	98
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 1804	4824	firefox.exe	99
PID 4824 wrote to memory of 4972	4824	firefox.exe	100

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:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\0-255.pbf
1⤵
- Modifies registry class
PID:1724

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\0-255.pbf
  2⤵
  PID:2764

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe"
  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:4824
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.0.1267816387\1673960511" -parentBuildID 20221007134813 -prefsHandle 1836 -prefMapHandle 1828 -prefsLen 20890 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {4cfba82d-c52a-4424-be4f-ba355846e2b0} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 1916 28934d16b58 gpu
    3⤵
    PID:4332
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.1.1515946477\851095420" -parentBuildID 20221007134813 -prefsHandle 2304 -prefMapHandle 2300 -prefsLen 20926 -prefMapSize 232675 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {115deaf5-3e9e-4030-9910-e51a608b1143} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 2316 28926d72b58 socket
    3⤵
    PID:1804
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.2.1374008313\1758615111" -childID 1 -isForBrowser -prefsHandle 3036 -prefMapHandle 2968 -prefsLen 21074 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f3f304e6-dd89-4b0d-93a7-d946769b0e35} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 3008 28933c8e458 tab
    3⤵
    PID:4972
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.3.1707052307\1650087763" -childID 2 -isForBrowser -prefsHandle 3520 -prefMapHandle 3512 -prefsLen 26519 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {0f29da5e-8781-4495-95af-8737de7682f1} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 3444 28936617e58 tab
    3⤵
    PID:2024
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.4.986564802\1902824023" -childID 3 -isForBrowser -prefsHandle 2348 -prefMapHandle 3900 -prefsLen 26519 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {855e4fa7-3a49-4b9e-9187-f4c15773a1e9} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 3912 28938bddc58 tab
    3⤵
    PID:1812
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.7.1329966554\2126944698" -childID 6 -isForBrowser -prefsHandle 5476 -prefMapHandle 5472 -prefsLen 26738 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {b8bf1091-aa46-48e1-b968-969463dfe47a} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 5392 2893a1b6258 tab
    3⤵
    PID:4828
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.6.1819320679\860605799" -childID 5 -isForBrowser -prefsHandle 5200 -prefMapHandle 5204 -prefsLen 26738 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {63901590-32fc-44bc-b850-751735dac767} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 5192 28939c7ff58 tab
    3⤵
    PID:1372
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4824.5.638508933\1560436572" -childID 4 -isForBrowser -prefsHandle 5016 -prefMapHandle 5032 -prefsLen 26738 -prefMapSize 232675 -jsInitHandle 1464 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ab28477b-5d85-482e-b025-bcab8d7e8c8b} 4824 "\\.\pipe\gecko-crash-server-pipe.4824" 5040 28937779558 tab
    3⤵
    PID:1160

Network

MITRE ATT&CK Enterprise v6

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\6exu9k4v.default-release\activity-stream.discovery_stream.json.tmp

Filesize
156KB

MD5
46a1eb4f842256ad911982bc83f76cbe

SHA1
e34a56492422528f2ee2753c0fde5c5fbcee865a

SHA256
3125f7033c54a0248a6600cbb7a17ba0a53cad5e7dcccb3dfe4be9d97a2c4dbd

SHA512
d954d6a461a28004e66db9c9f0f78b23e3d945595875e9ff3a8caccaf8712600bdf40860b80f0273278199a4aac6767a034c4c17de918bfb83ff43b8b2d06917

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

Filesize
6KB

MD5
da4a3276ca184d1233d31415b2251a6a

SHA1
1ca943cf7e122dc186512725422932ed72feeebb

SHA256
a55eb241c76c3b7615000d95e7ea0de1524d61a1e594b8dc7c05902a7cbb3bd5

SHA512
1ace862235610f20af65f4f21d0ba6876fc4325e1090ef2a8be5b031ccf4a6f5fb1e404ab92e0f049c0823d8e38eb4d35b41d2324795de78a4e628f1909b6fbd

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs.js

Filesize
6KB

MD5
108b97b1ff7efbdb1aecce96d55ff2e5

SHA1
bb72b2e0c3d859fe5e821632307a32df331b55e1

SHA256
c5e19d4313b524fffc4859f4fac05ea3dcf408714a736dbd0bb7fcdf5131f80e

SHA512
e0f7678424e68957a1cb521786e9e4e54c179f9a263b04d0c6a96147cb1e242b58bda3e74e6f142dcd9b6dd313a0061c3050af334b149eab9a8040f923da84dc

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
3191b5e4f69ba64b7253304f3c99f48d

SHA1
7b972d7d74c0658a08b6af48f87f92b27046bed6

SHA256
458333ccfbd9af523d52d4941f234f5b8eaa857e37ecb97053b514d7032f5494

SHA512
bd71d676432793bc09fa0f8389d8bad7362dca3b26f4f46162f7d29db589ed6e1dece3347b79190504729b0b399911a4ad2604e53fc9b728f366c5f6ef5aed31

Download Submit