7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63

Analysis

max time kernel
34s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 01:13

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General

Target

7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
Size

16KB
MD5

f440616f4e196c7a94c055f714960985
SHA1

42f7942c3c9454abc6d69b66c5633a17e65d3df5
SHA256

7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63
SHA512

bac004d0d3d723593ea871c627de0fe296fb21b96fa68cff311d781f2fe223c0d3bd55e24748130ce1613df0b6c2e1ecd1a15bf3af683660b5551aba8348f30b
SSDEEP

384:a4wUAVoSxMqXtrcsgFyeiQ4jK7TaYCSwx5E:nf0oOMqbgFyed8kTvCxy

Score

8^/10

persistence

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
1428	cmd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dsound.dll.bak	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
File created	C:\Windows\SysWOW64\dsound.dll	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\MSnoipds.dat	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
File opened for modification	C:\Windows\Fonts\AeioFs.dat	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
File created	C:\Windows\Fonts\kb11935041.dll	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
File opened for modification	C:\Windows\Fonts\kb11935041.dll	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA74B10B-4DDF-4ee0-966F-7B232A45068E}	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA74B10B-4DDF-4ee0-966F-7B232A45068E}\InprocServer32\ = "C:\\Windows\\Fonts\\kb11935041.dll"	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA74B10B-4DDF-4ee0-966F-7B232A45068E}\InprocServer32	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1428	784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe	26
PID 784 wrote to memory of 1428	784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe	26
PID 784 wrote to memory of 1428	784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe	26
PID 784 wrote to memory of 1428	784	7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe	26

C:\Users\Admin\AppData\Local\Temp\7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe
"C:\Users\Admin\AppData\Local\Temp\7dd2c583d5fcd3ec97cc03940f2b16d1b5558f2d52f82e375dec150e1061fb63.exe"
1⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c c:\del6c8ff1.bat
  2⤵
  - Deletes itself
  PID:1428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\del6c8ff1.bat

Filesize
270B

MD5
c85271bd390679dd0b7de9b6f82cdbe4

SHA1
a4c5293a14caba51eed4a2a9cf15c8583c694338

SHA256
aea03b4f6f2793961aeab20d8d51ba4da01b951463a15fa5f33cd5522c5593bb

SHA512
b97c85d64728ac9fef4929feefe2d2982e0bb71a21276d55a6d040b69fcf7523aea5e3f55d230185b4defdb31286988439dc51c8f1ff1fb85f2a3ec86cc7792b

Download Submit
memory/784-54-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/784-56-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download