6c5fe03e922e44dd0e989b30d5a94218a2d8b06edcbaa8ccb7576b1901500ee5

Analysis

max time kernel
25s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/12/2022, 13:51

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General

Target

6c5fe03e922e44dd0e989b30d5a94218a2d8b06edcbaa8ccb7576b1901500ee5.dll
Size

236KB
MD5

f4f66be42d868adfb43d68bbfcd5e220
SHA1

7508a4bcda16fc38ef83a069836e0108151d2f49
SHA256

6c5fe03e922e44dd0e989b30d5a94218a2d8b06edcbaa8ccb7576b1901500ee5
SHA512

b47dcefc562ee21c8c399cb038746327a2f846156a433aaa12dbba0559659ea9ae14d7fd806398cb68a4ba89a6ff2fae6480caa7890c1543b288aec70c7efd87
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMb:Go256vS0RJAL+lHPKi40+66iwkD0Q

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

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\birpunmdo = "{18bb0fef-9033-e588-a144-90338767c207}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2008	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{18bb0fef-9033-e588-a144-90338767c207}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{18bb0fef-9033-e588-a144-90338767c207}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{18bb0fef-9033-e588-a144-90338767c207}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{18bb0fef-9033-e588-a144-90338767c207}\InprocServer32\ = "C:\\Windows\\SysWow64\\wdmkpihyj.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{18bb0fef-9033-e588-a144-90338767c207}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2008	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2008	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28
PID 1892 wrote to memory of 2008	1892	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c5fe03e922e44dd0e989b30d5a94218a2d8b06edcbaa8ccb7576b1901500ee5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c5fe03e922e44dd0e989b30d5a94218a2d8b06edcbaa8ccb7576b1901500ee5.dll,#1
  2⤵
  - 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:2008

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

\Windows\SysWOW64\ovechazqb.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2008-55-0x0000000075811000-0x0000000075813000-memory.dmp

Filesize
8KB

Download
memory/2008-56-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2008-58-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2008-59-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download