chinese_generic_botnet | de8c1aa37dd523e0699a10be71185f7a8ac1cde972d04107068f49250ef7317e

General

Target

tmp.exe
Size

1.1MB
MD5

be689578752179e22bf915dbcf4f7520
SHA1

e798e703bfb90707a2872b51da73f32af566aedb
SHA256

de8c1aa37dd523e0699a10be71185f7a8ac1cde972d04107068f49250ef7317e
SHA512

89c95b387e566dfaf3f6a4ab60ee6e24d2574dd3802458e4d8f15e4c44136ac54c5b3a53addc1d28748656320050ee735fa2e8e5c57cdfb53fbdddc6eb586da8
SSDEEP

12288:0MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9VO25nQopSchf:0nsJ39LyjbJkQFMhmC+6GD9t1pSa

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/2140-138-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Executes dropped EXE 2 IoCs

Processes:

._cache_tmp.exeSynaptics.exe

pid process

2140 ._cache_tmp.exe
3468 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

Processes:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation tmp.exe

pid	process
2140	._cache_tmp.exe
3468	Synaptics.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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

Processes:

tmp.exe._cache_tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	tmp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Imsossm.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\._cache_tmp.exe"	._cache_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

Processes:

._cache_tmp.exe

description	ioc	process
File opened (read-only)	\??\R:	._cache_tmp.exe
File opened (read-only)	\??\W:	._cache_tmp.exe
File opened (read-only)	\??\Y:	._cache_tmp.exe
File opened (read-only)	\??\G:	._cache_tmp.exe
File opened (read-only)	\??\L:	._cache_tmp.exe
File opened (read-only)	\??\P:	._cache_tmp.exe
File opened (read-only)	\??\X:	._cache_tmp.exe
File opened (read-only)	\??\Z:	._cache_tmp.exe
File opened (read-only)	\??\K:	._cache_tmp.exe
File opened (read-only)	\??\M:	._cache_tmp.exe
File opened (read-only)	\??\Q:	._cache_tmp.exe
File opened (read-only)	\??\S:	._cache_tmp.exe
File opened (read-only)	\??\T:	._cache_tmp.exe
File opened (read-only)	\??\B:	._cache_tmp.exe
File opened (read-only)	\??\F:	._cache_tmp.exe
File opened (read-only)	\??\N:	._cache_tmp.exe
File opened (read-only)	\??\J:	._cache_tmp.exe
File opened (read-only)	\??\O:	._cache_tmp.exe
File opened (read-only)	\??\U:	._cache_tmp.exe
File opened (read-only)	\??\V:	._cache_tmp.exe
File opened (read-only)	\??\E:	._cache_tmp.exe
File opened (read-only)	\??\H:	._cache_tmp.exe
File opened (read-only)	\??\I:	._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 5 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE._cache_tmp.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	._cache_tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	._cache_tmp.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 1 IoCs

Processes:

tmp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ tmp.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4072 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

._cache_tmp.exe

pid process

2140 ._cache_tmp.exe
2140 ._cache_tmp.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

4072 EXCEL.EXE
4072 EXCEL.EXE
4072 EXCEL.EXE
4072 EXCEL.EXE
4072 EXCEL.EXE

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

pid	process
4072	EXCEL.EXE

pid	process
2140	._cache_tmp.exe
2140	._cache_tmp.exe

pid	process
4072	EXCEL.EXE
4072	EXCEL.EXE
4072	EXCEL.EXE
4072	EXCEL.EXE
4072	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

tmp.exe

description	pid	process	target process
PID 3856 wrote to memory of 2140	3856	tmp.exe	._cache_tmp.exe
PID 3856 wrote to memory of 2140	3856	tmp.exe	._cache_tmp.exe
PID 3856 wrote to memory of 2140	3856	tmp.exe	._cache_tmp.exe
PID 3856 wrote to memory of 3468	3856	tmp.exe	Synaptics.exe
PID 3856 wrote to memory of 3468	3856	tmp.exe	Synaptics.exe
PID 3856 wrote to memory of 3468	3856	tmp.exe	Synaptics.exe

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:3856

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:2140

C:\ProgramData\Synaptics\Synaptics.exe
"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
2⤵
- Executes dropped EXE
PID:3468

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4072

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

5

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
20beeb0a82adcce3a58372804acc46be

SHA1
c579d9017d2c8298fe075ff5c05963901330e72a

SHA256
d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

SHA512
7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
Filesize
400KB

MD5
20beeb0a82adcce3a58372804acc46be

SHA1
c579d9017d2c8298fe075ff5c05963901330e72a

SHA256
d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

SHA512
7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\ySbDAmpw.xlsm
Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
memory/2140-138-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/2140-132-0x0000000000000000-mapping.dmp

Download
memory/3468-135-0x0000000000000000-mapping.dmp

Download
memory/4072-141-0x00007FF9E39F0000-0x00007FF9E3A00000-memory.dmp

Filesize
64KB

Download
memory/4072-142-0x00007FF9E39F0000-0x00007FF9E3A00000-memory.dmp

Filesize
64KB

Download
memory/4072-143-0x00007FF9E39F0000-0x00007FF9E3A00000-memory.dmp

Filesize
64KB

Download
memory/4072-144-0x00007FF9E39F0000-0x00007FF9E3A00000-memory.dmp

Filesize
64KB

Download
memory/4072-145-0x00007FF9E39F0000-0x00007FF9E3A00000-memory.dmp

Filesize
64KB

Download
memory/4072-146-0x00007FF9E1830000-0x00007FF9E1840000-memory.dmp

Filesize
64KB

Download
memory/4072-147-0x00007FF9E1830000-0x00007FF9E1840000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads