chinese_generic_botnet | ff526968ee5a3aa4891f5e9bf0ac2790797762b5eaf34d47f5058f64c5908a13

General

Target

ZJ.exe
Size

2.3MB
MD5

1610c7cceefdeae7b7ac5367c73d040f
SHA1

f4387ef0b446a41909ab27437d1926cefd51c28a
SHA256

ff526968ee5a3aa4891f5e9bf0ac2790797762b5eaf34d47f5058f64c5908a13
SHA512

9e44567d492a080ba487f651fc808f4ea1ecab6e142bb47dca462175b88b2859d0ee4b9bc7399ffee880ada5897d31333e243b6509450829edb81cddf83140f5
SSDEEP

49152:wVPKtAZe39RT9D2PwgOWH3+E3B2EU9Dcg7ODwI5p/2QAm15fHoFN6WtljaEy93aB:EKSgtRT52nOWHrR2EUigUD5p/2QAofHl

Score

10^/10

chinese_generic_botnet botnet

Malware Config

Signatures

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

Chinese Botnet payload 2 IoCs

botnet

Processes:

resource	yara_rule
behavioral2/memory/4392-133-0x0000000002D90000-0x0000000002DB6000-memory.dmp	unk_chinese_botnet
behavioral2/memory/4392-134-0x0000000010000000-0x0000000010027000-memory.dmp	unk_chinese_botnet

Downloads MZ/PE file
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

ZJ.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation ZJ.exe
Executes dropped EXE 1 IoCs

Processes:

Windowsfig.exe

pid process

884 Windowsfig.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	ZJ.exe

pid	process
884	Windowsfig.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:

ZJ.exe

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

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4168 884 WerFault.exe Windowsfig.exe

pid	pid_target	process	target process
4168	884	WerFault.exe	Windowsfig.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

ZJ.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ZJ.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ZJ.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Windowsfig.exeZJ.exe

pid process

884 Windowsfig.exe
4392 ZJ.exe
4392 ZJ.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Windowsfig.exe

description pid process

Token: SeDebugPrivilege 884 Windowsfig.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ZJ.exe

pid process

4392 ZJ.exe

pid	process
884	Windowsfig.exe
4392	ZJ.exe
4392	ZJ.exe

description	pid	process
Token: SeDebugPrivilege	884	Windowsfig.exe

pid	process
4392	ZJ.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

ZJ.exe

description	pid	process	target process
PID 4392 wrote to memory of 884	4392	ZJ.exe	Windowsfig.exe
PID 4392 wrote to memory of 884	4392	ZJ.exe	Windowsfig.exe
PID 4392 wrote to memory of 884	4392	ZJ.exe	Windowsfig.exe
PID 4392 wrote to memory of 2580	4392	ZJ.exe	cmd.exe
PID 4392 wrote to memory of 2580	4392	ZJ.exe	cmd.exe
PID 4392 wrote to memory of 2580	4392	ZJ.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\ZJ.exe
"C:\Users\Admin\AppData\Local\Temp\ZJ.exe"
1⤵
- Checks computer location settings
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4392

C:\ProgramData\Windowsfig.exe
"C:\ProgramData\Windowsfig.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 884 -s 2424
3⤵
- Program crash
PID:4168

C:\Windows\SysWOW64\cmd.exe
cmd /C "del /F /S /Q /A C:\ProgramData\Windowsfig.exe"
2⤵
PID:2580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 884 -ip 884
1⤵
PID:4788

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\Windowsfig.exe
Filesize
108KB

MD5
40528a8ce542af784cb9958552f7798d

SHA1
58c5ba782f367a1d65bf712ada150fe0b5e14292

SHA256
46780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc

SHA512
dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a

Download Submit
C:\ProgramData\Windowsfig.exe
Filesize
108KB

MD5
40528a8ce542af784cb9958552f7798d

SHA1
58c5ba782f367a1d65bf712ada150fe0b5e14292

SHA256
46780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc

SHA512
dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a

Download Submit
C:\ProgramData\Windowsfig.exe
Filesize
108KB

MD5
40528a8ce542af784cb9958552f7798d

SHA1
58c5ba782f367a1d65bf712ada150fe0b5e14292

SHA256
46780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc

SHA512
dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nkdckkfh.jr1.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/884-178-0x0000000002930000-0x0000000002940000-memory.dmp

Filesize
64KB

Download
memory/884-181-0x00000000065A0000-0x00000000065C2000-memory.dmp

Filesize
136KB

Download
memory/884-166-0x0000000008A40000-0x0000000009068000-memory.dmp

Filesize
6.2MB

Download
memory/884-199-0x00000000FF840000-0x00000000FF850000-memory.dmp

Filesize
64KB

Download
memory/884-176-0x00000000064B0000-0x00000000064CA000-memory.dmp

Filesize
104KB

Download
memory/884-177-0x0000000006510000-0x0000000006546000-memory.dmp

Filesize
216KB

Download
memory/884-198-0x00000000057A0000-0x00000000057AA000-memory.dmp

Filesize
40KB

Download
memory/884-179-0x0000000007310000-0x000000000798A000-memory.dmp

Filesize
6.5MB

Download
memory/884-180-0x00000000065F0000-0x0000000006686000-memory.dmp

Filesize
600KB

Download
memory/884-165-0x0000000000460000-0x0000000000480000-memory.dmp

Filesize
128KB

Download
memory/884-182-0x0000000006700000-0x0000000006766000-memory.dmp

Filesize
408KB

Download
memory/884-183-0x0000000007990000-0x0000000007F34000-memory.dmp

Filesize
5.6MB

Download
memory/884-184-0x00000000066D0000-0x00000000066EE000-memory.dmp

Filesize
120KB

Download
memory/884-185-0x00000000067C0000-0x000000000680A000-memory.dmp

Filesize
296KB

Download
memory/884-186-0x0000000007F40000-0x0000000007FA6000-memory.dmp

Filesize
408KB

Download
memory/884-187-0x0000000007FB0000-0x0000000007FD2000-memory.dmp

Filesize
136KB

Download
memory/884-197-0x00000000052F0000-0x000000000530E000-memory.dmp

Filesize
120KB

Download
memory/4392-133-0x0000000002D90000-0x0000000002DB6000-memory.dmp

Filesize
152KB

Download
memory/4392-134-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads