chinese_generic_botnet | 1c4a913ffcc6f2a4934692f2b0294f2a2fc488100a7f3cdebc6b1e1180340752

Analysis

max time kernel
133s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
29-08-2023 02:51

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General

Target

1c4a913ffcc6f2a4934692f2b0294f2a2fc488100a7f3cdebc6b1e1180340752.dll
Size

105KB
MD5

576b1abb539be5085a054f00b58d2ca9
SHA1

c52fcb422d99ac9764c2f5688d1476a55969a980
SHA256

1c4a913ffcc6f2a4934692f2b0294f2a2fc488100a7f3cdebc6b1e1180340752
SHA512

6ffb7b743581747f1d02d7f65a8dcfab03d6b29743d42f3d47870faa7494617d6f3436bff25f2727fd224dd4469b3b8357c891096fd9f0c31d2d2b6f35425f34
SSDEEP

1536:IJLM+cWIWGZpnMM0N12XvcBuqsu0+6ma+McfHfjsWjcdFjVODSTRD:kLM+epZpnT0NIXLFP+t/MFjVO+VD

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 2 IoCs

botnet

resource	yara_rule
behavioral2/memory/1328-0-0x0000000002D50000-0x0000000002D76000-memory.dmp	unk_chinese_botnet
behavioral2/memory/1328-1-0x0000000010000000-0x0000000010027000-memory.dmp	unk_chinese_botnet

Blocklisted process makes network request 2 IoCs

flow	pid	Process
14	1328	rundll32.exe
23	1328	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Enumerates connected drives 3 TTPs 22 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:	rundll32.exe
File opened (read-only)	\??\V:	rundll32.exe
File opened (read-only)	\??\Y:	rundll32.exe
File opened (read-only)	\??\E:	rundll32.exe
File opened (read-only)	\??\H:	rundll32.exe
File opened (read-only)	\??\J:	rundll32.exe
File opened (read-only)	\??\L:	rundll32.exe
File opened (read-only)	\??\W:	rundll32.exe
File opened (read-only)	\??\O:	rundll32.exe
File opened (read-only)	\??\R:	rundll32.exe
File opened (read-only)	\??\S:	rundll32.exe
File opened (read-only)	\??\P:	rundll32.exe
File opened (read-only)	\??\T:	rundll32.exe
File opened (read-only)	\??\B:	rundll32.exe
File opened (read-only)	\??\G:	rundll32.exe
File opened (read-only)	\??\I:	rundll32.exe
File opened (read-only)	\??\K:	rundll32.exe
File opened (read-only)	\??\M:	rundll32.exe
File opened (read-only)	\??\N:	rundll32.exe
File opened (read-only)	\??\U:	rundll32.exe
File opened (read-only)	\??\X:	rundll32.exe
File opened (read-only)	\??\Z:	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1328	rundll32.exe
1328	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 1328	4228	rundll32.exe	82
PID 4228 wrote to memory of 1328	4228	rundll32.exe	82
PID 4228 wrote to memory of 1328	4228	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1c4a913ffcc6f2a4934692f2b0294f2a2fc488100a7f3cdebc6b1e1180340752.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1c4a913ffcc6f2a4934692f2b0294f2a2fc488100a7f3cdebc6b1e1180340752.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1328-0-0x0000000002D50000-0x0000000002D76000-memory.dmp

Filesize
152KB

Download
memory/1328-1-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download