chinese_generic_botnet | 70969f1d56ec1ddcae3fc50545c0a351b798226c62d870db8ae5170eeec67694

General

Target

tmp.exe
Size

1.1MB
MD5

d6df53506b123f5717463d0355336979
SHA1

7720fb4b89a4ebcef32a6d6a9a7a88c65cad2c14
SHA256

70969f1d56ec1ddcae3fc50545c0a351b798226c62d870db8ae5170eeec67694
SHA512

1bfefa221ed77ef05fc72fbc20a322cae990b2a33a9af47b9ee4d9fa1c09d5c81f6a8fd8496ed43a47ee2862e1e2bf1651b4cca2f5e9e23e491c3d4b3249ad2f

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

resource	yara_rule
behavioral2/memory/5036-136-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Executes dropped EXE 2 IoCs

pid	Process
5036	._cache_tmp.exe
1872	Synaptics.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	tmp.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Peahrfb.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\._cache_tmp.exe"	._cache_tmp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	tmp.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

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

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

System Information Discovery
T1082

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

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	tmp.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5036	._cache_tmp.exe
5036	._cache_tmp.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 5036	4580	tmp.exe	79
PID 4580 wrote to memory of 5036	4580	tmp.exe	79
PID 4580 wrote to memory of 5036	4580	tmp.exe	79
PID 4580 wrote to memory of 1872	4580	tmp.exe	80
PID 4580 wrote to memory of 1872	4580	tmp.exe	80
PID 4580 wrote to memory of 1872	4580	tmp.exe	80

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Enumerates connected drives
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:5036
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Executes dropped EXE
  PID:1872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
754KB

MD5
310a7ff41f6633132e6c2bc25e51e567

SHA1
5f687df8cc3185ed68d77d0e05502c2eb308c5c8

SHA256
d1425edf482717cb64db2a36357866045b0c6306d919296591ffc9bc45d680ab

SHA512
ee9b3114cb37e52793bccdf20a27158f5def67ed9c7d8eb772e1deaf5d5f9a0030e847dea40bb320637f29508f1be2a49c3095460a6fd3afbc3bca196f642980

Download Submit
C:\ProgramData\Synaptics\Synaptics.exe

Filesize
754KB

MD5
310a7ff41f6633132e6c2bc25e51e567

SHA1
5f687df8cc3185ed68d77d0e05502c2eb308c5c8

SHA256
d1425edf482717cb64db2a36357866045b0c6306d919296591ffc9bc45d680ab

SHA512
ee9b3114cb37e52793bccdf20a27158f5def67ed9c7d8eb772e1deaf5d5f9a0030e847dea40bb320637f29508f1be2a49c3095460a6fd3afbc3bca196f642980

Download Submit
C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe

Filesize
400KB

MD5
f82f50d6a61d3d73172fcbf3ff665e89

SHA1
2e5cde938a2822a13348e55f4ad0dfa75d545fee

SHA256
afbf8e478edc3d239953a3653a5ec113363fb9406552536d6469581b52585bcd

SHA512
f5945f9c5b4cfcd29498b24ec43000e6ec2927ec264d758aeeb4325f4c5f2b1d03fb997c84b38daec82b4a1dbc9f049b932ca399ef02778072cf594b1b5044fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe

Filesize
400KB

MD5
f82f50d6a61d3d73172fcbf3ff665e89

SHA1
2e5cde938a2822a13348e55f4ad0dfa75d545fee

SHA256
afbf8e478edc3d239953a3653a5ec113363fb9406552536d6469581b52585bcd

SHA512
f5945f9c5b4cfcd29498b24ec43000e6ec2927ec264d758aeeb4325f4c5f2b1d03fb997c84b38daec82b4a1dbc9f049b932ca399ef02778072cf594b1b5044fb

Download Submit
memory/5036-136-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads