cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

Analysis

max time kernel
62s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 07:19

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General

Target

cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
Size

42KB
MD5

c6b81c7fb7d688711923a3774432f42d
SHA1

a4df01899ea43820b1661c57175019dfd6e602a3
SHA256

cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a
SHA512

9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1
SSDEEP

768:uBUaZmvRRaO52tjS+YC5tZvx0HRVzJ1gFqDhgpVmcLek/c3Lqyu9usvSKvQkv:uBc6GC5bpMMuCuCek/c3LqbEWvQkv

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1064	hdnzcucu.exe
1716	hdnzcucu.exe

Deletes itself 1 IoCs

pid	Process
1064	hdnzcucu.exe

Loads dropped DLL 6 IoCs

pid	Process
1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
1064	hdnzcucu.exe
1064	hdnzcucu.exe
1064	hdnzcucu.exe
1064	hdnzcucu.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\hdnzcucu.exe	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
File opened for modification	\??\c:\windows\SysWOW64\hdnzcucu.exe	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	hdnzcucu.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	hdnzcucu.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 916	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	27
PID 1508 wrote to memory of 1064	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	28
PID 1508 wrote to memory of 1064	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	28
PID 1508 wrote to memory of 1064	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	28
PID 1508 wrote to memory of 1064	1508	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	28
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1992	1064	hdnzcucu.exe	29
PID 1064 wrote to memory of 1716	1064	hdnzcucu.exe	30
PID 1064 wrote to memory of 1716	1064	hdnzcucu.exe	30
PID 1064 wrote to memory of 1716	1064	hdnzcucu.exe	30
PID 1064 wrote to memory of 1716	1064	hdnzcucu.exe	30
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31
PID 1716 wrote to memory of 1212	1716	hdnzcucu.exe	31

C:\Users\Admin\AppData\Local\Temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
"C:\Users\Admin\AppData\Local\Temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
  2⤵
  PID:916
- C:\windows\SysWOW64\hdnzcucu.exe
  "C:\windows\system32\hdnzcucu.exe" -kill c:\users\admin\appdata\local\temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe /install
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Loads dropped DLL
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1064
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
    3⤵
    PID:1992
- - C:\windows\SysWOW64\hdnzcucu.exe
    "C:\windows\system32\hdnzcucu.exe" -kill c:\windows\syswow64\hdnzcucu.exe /install /install
    3⤵
    - Executes dropped EXE
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
      4⤵
      PID:1212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
C:\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\??\c:\windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
\Windows\SysWOW64\hdnzcucu.exe

Filesize
42KB

MD5
c6b81c7fb7d688711923a3774432f42d

SHA1
a4df01899ea43820b1661c57175019dfd6e602a3

SHA256
cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

SHA512
9f6f830745ff0d1125d94ac54ed8e0851660ff37142798706c13af6aec854e2e5590d2e5749f01ea629867a506b896bb63ce8fc9fc4cab12a6154b6bf07961a1

Download Submit
memory/1508-54-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download
memory/1508-60-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1716-75-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1716-76-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download