79c5324a490a66906380ed976ca7bf4eb73f5d85fec3f2260a32937e391fd073

Analysis

max time kernel
141s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 06:10

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General

Target

0a9ca1e90fd98d8339dd33c9b27d6d47.dll
Size

236KB
MD5

0a9ca1e90fd98d8339dd33c9b27d6d47
SHA1

6f22fa177f5fd7cad4d34fbc4ed8f7c8aeb8e452
SHA256

79c5324a490a66906380ed976ca7bf4eb73f5d85fec3f2260a32937e391fd073
SHA512

5d5d5e4d8bb4d0b006cdfc0ed09d40daf8e7d1d93f5653c22c85160da2c743cc682c4d27db833d62c9c33e501f8ae54b8ecd356e64000cf35fdd26250ca17da4
SSDEEP

1536:1dKaTHN2ymZ0ofa5uQm4V7HG8ldINh+RhFtFftCgpcGO5lPf/XG8GmGwktb3:1Y4tIQG8XAmbFfaGc1fawk13

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\ssobbfhpv = "{26697dd5-aee1-f336-bff2-aee1f55df4ec}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4408	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{26697dd5-aee1-f336-bff2-aee1f55df4ec}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{26697dd5-aee1-f336-bff2-aee1f55df4ec}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{26697dd5-aee1-f336-bff2-aee1f55df4ec}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{26697dd5-aee1-f336-bff2-aee1f55df4ec}\InprocServer32\ = "C:\\Windows\\SysWow64\\nnjwwackq.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{26697dd5-aee1-f336-bff2-aee1f55df4ec}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4408	rundll32.exe
4408	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4408	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 4408	2740	rundll32.exe	14
PID 2740 wrote to memory of 4408	2740	rundll32.exe	14
PID 2740 wrote to memory of 4408	2740	rundll32.exe	14

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a9ca1e90fd98d8339dd33c9b27d6d47.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:4408

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a9ca1e90fd98d8339dd33c9b27d6d47.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2740

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

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Downloads

memory/4408-7-0x0000000077240000-0x00000000772BA000-memory.dmp

Filesize
488KB

Download
memory/4408-0-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4408-11-0x0000000077240000-0x00000000772BA000-memory.dmp

Filesize
488KB

Download
memory/4408-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download