chinese_generic_botnet | a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

General

Target

fbf.exe
Size

249KB
MD5

fbf3187db919beaddb30ae7e52bd9a49
SHA1

d2891928551f2adff238547c7cae4e3fef7cc057
SHA256

a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd
SHA512

1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

Score

10^/10

chinese_generic_botnet botnet persistence

Malware Config

Signatures

Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
botnet chinese_generic_botnet

Chinese Botnet Payload 1 IoCs

botnet

Processes:

resource	yara_rule
behavioral2/memory/2484-117-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fbf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Uuuocai.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fbf.exe"	fbf.exe

Enumerates connected drives 3 TTPs 23 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

Processes:

fbf.exe

description	ioc	process
File opened (read-only)	\??\F:	fbf.exe
File opened (read-only)	\??\I:	fbf.exe
File opened (read-only)	\??\K:	fbf.exe
File opened (read-only)	\??\O:	fbf.exe
File opened (read-only)	\??\P:	fbf.exe
File opened (read-only)	\??\S:	fbf.exe
File opened (read-only)	\??\W:	fbf.exe
File opened (read-only)	\??\B:	fbf.exe
File opened (read-only)	\??\Y:	fbf.exe
File opened (read-only)	\??\M:	fbf.exe
File opened (read-only)	\??\U:	fbf.exe
File opened (read-only)	\??\V:	fbf.exe
File opened (read-only)	\??\Z:	fbf.exe
File opened (read-only)	\??\H:	fbf.exe
File opened (read-only)	\??\J:	fbf.exe
File opened (read-only)	\??\Q:	fbf.exe
File opened (read-only)	\??\R:	fbf.exe
File opened (read-only)	\??\T:	fbf.exe
File opened (read-only)	\??\G:	fbf.exe
File opened (read-only)	\??\L:	fbf.exe
File opened (read-only)	\??\N:	fbf.exe
File opened (read-only)	\??\X:	fbf.exe
File opened (read-only)	\??\E:	fbf.exe

Drops file in Windows directory 5 IoCs

Processes:

SystemSettings.exeSystemSettings.exe

description	ioc	process
File created	C:\Windows\rescache\_merged\1742034116\2087166547.pri	SystemSettings.exe
File created	C:\Windows\rescache\_merged\2717123927\1713683155.pri	SystemSettings.exe
File created	C:\Windows\rescache\_merged\3060194815\335381474.pri	SystemSettings.exe
File created	C:\Windows\rescache\_merged\2717123927\1713683155.pri	SystemSettings.exe
File created	C:\Windows\rescache\_merged\3060194815\335381474.pri	SystemSettings.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 8 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

SystemSettings.exeSystemSettings.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000	SystemSettings.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\HardwareID	SystemSettings.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000	SystemSettings.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000\HardwareID	SystemSettings.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000	SystemSettings.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\HardwareID	SystemSettings.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000	SystemSettings.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000\HardwareID	SystemSettings.exe

Checks processor information in registry 2 TTPs 7 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

firefox.exefbf.exe

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

Modifies registry class 1 IoCs

Processes:

firefox.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings firefox.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

fbf.exe

pid process

2484 fbf.exe
2484 fbf.exe
2484 fbf.exe
2484 fbf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SystemSettings.exe

description pid process

Token: SeShutdownPrivilege 3656 SystemSettings.exe
Token: SeCreatePagefilePrivilege 3656 SystemSettings.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

firefox.exe

pid process

1192 firefox.exe
1192 firefox.exe
1192 firefox.exe
1192 firefox.exe
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

firefox.exe

pid process

1192 firefox.exe
1192 firefox.exe
1192 firefox.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

fbf.exeSystemSettings.exeSystemSettings.exefirefox.exe

pid process

2484 fbf.exe
2596 SystemSettings.exe
3656 SystemSettings.exe
1192 firefox.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings	firefox.exe

pid	process
2484	fbf.exe
2484	fbf.exe
2484	fbf.exe
2484	fbf.exe

description	pid	process
Token: SeShutdownPrivilege	3656	SystemSettings.exe
Token: SeCreatePagefilePrivilege	3656	SystemSettings.exe

pid	process
1192	firefox.exe
1192	firefox.exe
1192	firefox.exe
1192	firefox.exe

pid	process
1192	firefox.exe
1192	firefox.exe
1192	firefox.exe

pid	process
2484	fbf.exe
2596	SystemSettings.exe
3656	SystemSettings.exe
1192	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

firefox.exefirefox.exe

description	pid	process	target process
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 3976 wrote to memory of 1192	3976	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3020	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3020	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 2240	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe
PID 1192 wrote to memory of 3704	1192	firefox.exe	firefox.exe

C:\Users\Admin\AppData\Local\Temp\fbf.exe
"C:\Users\Admin\AppData\Local\Temp\fbf.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2484

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3976

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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1192

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1192.0.950619275\1495569214" -parentBuildID 20200403170909 -prefsHandle 1516 -prefMapHandle 1500 -prefsLen 1 -prefMapSize 219808 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1192 "\\.\pipe\gecko-crash-server-pipe.1192" 1600 gpu
3⤵
PID:3020

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1192.3.1514248659\512633359" -childID 1 -isForBrowser -prefsHandle 2212 -prefMapHandle 1264 -prefsLen 500 -prefMapSize 219808 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1192 "\\.\pipe\gecko-crash-server-pipe.1192" 2224 tab
3⤵
PID:2240

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1192.13.1439293297\1558605896" -childID 2 -isForBrowser -prefsHandle 3144 -prefMapHandle 3140 -prefsLen 1368 -prefMapSize 219808 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1192 "\\.\pipe\gecko-crash-server-pipe.1192" 3152 tab
3⤵
PID:3704

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1192.20.712621250\1563055686" -childID 3 -isForBrowser -prefsHandle 3676 -prefMapHandle 3672 -prefsLen 7430 -prefMapSize 219808 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1192 "\\.\pipe\gecko-crash-server-pipe.1192" 3688 tab
3⤵
PID:3628

C:\Windows\ImmersiveControlPanel\SystemSettings.exe
"C:\Windows\ImmersiveControlPanel\SystemSettings.exe" -ServerName:microsoft.windows.immersivecontrolpanel
1⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Suspicious use of SetWindowsHookEx
PID:2596

C:\Windows\ImmersiveControlPanel\SystemSettings.exe
"C:\Windows\ImmersiveControlPanel\SystemSettings.exe" -ServerName:microsoft.windows.immersivecontrolpanel
1⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3656

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

Peripheral Device Discovery

2

T1120

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PRICache\3060194815\335381474.pri
MD5
8c351c24a7c2efc552747667f284bfaf

SHA1
e652c65845f72bfa219c0637eb40514b5cc4d3fb

SHA256
6f0565f7e34f376ed12a61be071a04144263fc12c2aa04a398fa8e2ed1e7ecce

SHA512
e1f81c1051fa941321e6352950b7bdea2a6dba26ec06c9420ff6d1a4ff38778754eeebd024b8c770088735badb0ab13c522b9601129b03b2612fb5e2b2f35cbf

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\f18460fded109990.customDestinations-ms
MD5
4fcb2a3ee025e4a10d21e1b154873fe2

SHA1
57658e2fa594b7d0b99d02e041d0f3418e58856b

SHA256
90bf6baa6f968a285f88620fbf91e1f5aa3e66e2bad50fd16f37913280ad8228

SHA512
4e85d48db8c0ee5c4dd4149ab01d33e4224456c3f3e3b0101544a5ca87a0d74b3ccd8c0509650008e2abed65efd1e140b1e65ae5215ab32de6f6a49c9d3ec3ff

Download Submit
memory/1192-119-0x0000000000000000-mapping.dmp

Download
memory/2240-657-0x0000000000000000-mapping.dmp

Download
memory/2484-115-0x00000000020E0000-0x000000000219C000-memory.dmp

Filesize
752KB

Download
memory/2484-116-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2484-117-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3020-347-0x0000000000000000-mapping.dmp

Download
memory/3628-1259-0x0000000000000000-mapping.dmp

Download
memory/3704-829-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads