chinese_generic_botnet | be817248c8fc124a548b2187aa95fca5b2a5de02cabbd18a2463d2cb5a1593ab

General

Target

a3b10f3a5f223f5098ec991f21ab85aa.exe
Size

3.3MB
MD5

a3b10f3a5f223f5098ec991f21ab85aa
SHA1

04765416947784368adaf3bea627bcd3c817f0f8
SHA256

be817248c8fc124a548b2187aa95fca5b2a5de02cabbd18a2463d2cb5a1593ab
SHA512

77d3183c13b0f70f963d9fe271c2f5889710d09a7acdf95650d8ac20b21009a0078803922803c73fcb237d5c6f070f7a016e6b13e8635d98a3f3df83c1292979
SSDEEP

98304:Wbjsyw3BKLujJ5iV0hH1bRWydCOHoFN6WtljaEy9/FLOAkGkzdnEVomFHKnP:We3YY1bRWybHmN6WtljaEylFLOyomFHo

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/1436-133-0x00000000036C0000-0x00000000036E6000-memory.dmp	unk_chinese_botnet
behavioral2/memory/1436-134-0x0000000010000000-0x0000000010027000-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:

a3b10f3a5f223f5098ec991f21ab85aa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	a3b10f3a5f223f5098ec991f21ab85aa.exe

Executes dropped EXE 1 IoCs

Processes:

Windowsfig.exe

pid process

1348 Windowsfig.exe

pid	process
1348	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:

a3b10f3a5f223f5098ec991f21ab85aa.exe

description	ioc	process
File opened (read-only)	\??\F:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\J:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\K:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\N:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\V:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\Y:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\E:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\M:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\P:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\R:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\S:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\U:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\W:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\X:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\B:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\G:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\H:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\I:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\Z:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\L:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\O:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\Q:	a3b10f3a5f223f5098ec991f21ab85aa.exe
File opened (read-only)	\??\T:	a3b10f3a5f223f5098ec991f21ab85aa.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

4672 1348 WerFault.exe Windowsfig.exe

pid	pid_target	process	target process
4672	1348	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:

a3b10f3a5f223f5098ec991f21ab85aa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a3b10f3a5f223f5098ec991f21ab85aa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	a3b10f3a5f223f5098ec991f21ab85aa.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Windowsfig.exea3b10f3a5f223f5098ec991f21ab85aa.exe

pid process

1348 Windowsfig.exe
1436 a3b10f3a5f223f5098ec991f21ab85aa.exe
1436 a3b10f3a5f223f5098ec991f21ab85aa.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Windowsfig.exe

description pid process

Token: SeDebugPrivilege 1348 Windowsfig.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

a3b10f3a5f223f5098ec991f21ab85aa.exe

pid process

1436 a3b10f3a5f223f5098ec991f21ab85aa.exe

pid	process
1348	Windowsfig.exe
1436	a3b10f3a5f223f5098ec991f21ab85aa.exe
1436	a3b10f3a5f223f5098ec991f21ab85aa.exe

description	pid	process
Token: SeDebugPrivilege	1348	Windowsfig.exe

pid	process
1436	a3b10f3a5f223f5098ec991f21ab85aa.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

a3b10f3a5f223f5098ec991f21ab85aa.exe

description	pid	process	target process
PID 1436 wrote to memory of 1348	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	Windowsfig.exe
PID 1436 wrote to memory of 1348	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	Windowsfig.exe
PID 1436 wrote to memory of 1348	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	Windowsfig.exe
PID 1436 wrote to memory of 4220	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	cmd.exe
PID 1436 wrote to memory of 4220	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	cmd.exe
PID 1436 wrote to memory of 4220	1436	a3b10f3a5f223f5098ec991f21ab85aa.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\a3b10f3a5f223f5098ec991f21ab85aa.exe
"C:\Users\Admin\AppData\Local\Temp\a3b10f3a5f223f5098ec991f21ab85aa.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:1436

C:\ProgramData\Windowsfig.exe
"C:\ProgramData\Windowsfig.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1348 -s 2484
3⤵
- Program crash
PID:4672

C:\Windows\SysWOW64\cmd.exe
cmd /C "del /F /S /Q /A C:\ProgramData\Windowsfig.exe"
2⤵
PID:4220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1348 -ip 1348
1⤵
PID:4180

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_45351e0v.bj4.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1348-178-0x0000000006EA0000-0x0000000006ED6000-memory.dmp

Filesize
216KB

Download
memory/1348-181-0x0000000006F30000-0x0000000006F52000-memory.dmp

Filesize
136KB

Download
memory/1348-166-0x0000000009430000-0x0000000009A58000-memory.dmp

Filesize
6.2MB

Download
memory/1348-167-0x0000000005760000-0x0000000005770000-memory.dmp

Filesize
64KB

Download
memory/1348-199-0x0000000006720000-0x000000000672A000-memory.dmp

Filesize
40KB

Download
memory/1348-177-0x0000000006E40000-0x0000000006E5A000-memory.dmp

Filesize
104KB

Download
memory/1348-198-0x00000000FF000000-0x00000000FF010000-memory.dmp

Filesize
64KB

Download
memory/1348-179-0x0000000007D00000-0x000000000837A000-memory.dmp

Filesize
6.5MB

Download
memory/1348-180-0x0000000006F80000-0x0000000007016000-memory.dmp

Filesize
600KB

Download
memory/1348-165-0x0000000000E80000-0x0000000000EA0000-memory.dmp

Filesize
128KB

Download
memory/1348-182-0x0000000007090000-0x00000000070F6000-memory.dmp

Filesize
408KB

Download
memory/1348-183-0x0000000008380000-0x0000000008924000-memory.dmp

Filesize
5.6MB

Download
memory/1348-184-0x0000000007060000-0x000000000707E000-memory.dmp

Filesize
120KB

Download
memory/1348-185-0x0000000007150000-0x000000000719A000-memory.dmp

Filesize
296KB

Download
memory/1348-186-0x0000000008930000-0x0000000008996000-memory.dmp

Filesize
408KB

Download
memory/1348-187-0x00000000089A0000-0x00000000089C2000-memory.dmp

Filesize
136KB

Download
memory/1348-197-0x0000000005B30000-0x0000000005B4E000-memory.dmp

Filesize
120KB

Download
memory/1436-133-0x00000000036C0000-0x00000000036E6000-memory.dmp

Filesize
152KB

Download
memory/1436-134-0x0000000010000000-0x0000000010027000-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