92fae3faa43110e279f6e37cde54712afbdb495467c173ed7c39ce19b089a499

Analysis

max time kernel
144s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 23:13

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General

Target

069d63e1abea95c46a8a7d4c3063a6bb.dll
Size

231KB
MD5

069d63e1abea95c46a8a7d4c3063a6bb
SHA1

309654bc975e274c634df8329089676352e5d503
SHA256

92fae3faa43110e279f6e37cde54712afbdb495467c173ed7c39ce19b089a499
SHA512

ca084db4a36147e37e6529921141bb6ef59783c083c45f31ed74c45733f2611abe07b3baacaeb568964d378deaa4cb963ccbbdd9ec9bac87d84f1a57710d1292
SSDEEP

3072:zysX0WxnWd/IkmL+PViEbmzwtz/wk8YWbh:mskd/IkmuVfyWdMh

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\tspuu = "{161c8123-9e94-e3e9-afa5-9e9409abc82e}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4184	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\gfchh.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\gfchh.dll	rundll32.exe
File created	C:\Windows\SysWOW64\onkpp.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\onkpp.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{161c8123-9e94-e3e9-afa5-9e9409abc82e}\InprocServer32\ = "C:\\Windows\\SysWow64\\onkpp.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{161c8123-9e94-e3e9-afa5-9e9409abc82e}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{161c8123-9e94-e3e9-afa5-9e9409abc82e}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{161c8123-9e94-e3e9-afa5-9e9409abc82e}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{161c8123-9e94-e3e9-afa5-9e9409abc82e}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4184	rundll32.exe
4184	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4184	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4184	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 4184	1176	rundll32.exe	16
PID 1176 wrote to memory of 4184	1176	rundll32.exe	16
PID 1176 wrote to memory of 4184	1176	rundll32.exe	16

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\069d63e1abea95c46a8a7d4c3063a6bb.dll,#1
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4184

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\069d63e1abea95c46a8a7d4c3063a6bb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1176

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\gfchh.dll

Filesize
844B

MD5
26c637bde3aeb736c8a78f2050101e9b

SHA1
021402a1dcf4ad22d0ac4d18808105a1440cacc8

SHA256
2fc87c189df3b7877f7b55c1ae1991dec988966d725d90f47b19542ffc5f7a12

SHA512
68e5ed973d1bcb64f845d4763b6636ce7d90ae19a70ebf295a3f35b7508efe659b711d81f8d7f8cf97048c65aef48c38f127a83b1d6a17fd3b5685d7499b3478

Download Submit
memory/4184-6-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/4184-7-0x0000000076CD0000-0x0000000076D4A000-memory.dmp

Filesize
488KB

Download
memory/4184-11-0x0000000076CD0000-0x0000000076D4A000-memory.dmp

Filesize
488KB

Download
memory/4184-10-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download