cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a

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
1208	hdnzcucu.exe
3304	hdnzcucu.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	hdnzcucu.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	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	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
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

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 1656	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	81
PID 4804 wrote to memory of 1656	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	81
PID 4804 wrote to memory of 1656	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	81
PID 4804 wrote to memory of 1208	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	82
PID 4804 wrote to memory of 1208	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	82
PID 4804 wrote to memory of 1208	4804	cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe	82
PID 1208 wrote to memory of 1196	1208	hdnzcucu.exe	83
PID 1208 wrote to memory of 1196	1208	hdnzcucu.exe	83
PID 1208 wrote to memory of 1196	1208	hdnzcucu.exe	83
PID 1208 wrote to memory of 3304	1208	hdnzcucu.exe	84
PID 1208 wrote to memory of 3304	1208	hdnzcucu.exe	84
PID 1208 wrote to memory of 3304	1208	hdnzcucu.exe	84
PID 3304 wrote to memory of 2544	3304	hdnzcucu.exe	85
PID 3304 wrote to memory of 2544	3304	hdnzcucu.exe	85
PID 3304 wrote to memory of 2544	3304	hdnzcucu.exe	85

C:\Users\Admin\AppData\Local\Temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe
"C:\Users\Admin\AppData\Local\Temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
  2⤵
  PID:1656
- C:\windows\SysWOW64\hdnzcucu.exe
  "C:\windows\system32\hdnzcucu.exe" -kill c:\users\admin\appdata\local\temp\cf0f6a60ac2c37799b02f26581cc92b2c346bfcdd757d2b459b969ea0e76867a.exe /install
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1208
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
    3⤵
    PID:1196
- - C:\windows\SysWOW64\hdnzcucu.exe
    "C:\windows\system32\hdnzcucu.exe" -kill c:\windows\syswow64\hdnzcucu.exe /install /install
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:3304
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
      4⤵
      PID:2544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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
memory/1208-141-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3304-143-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4804-132-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4804-137-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

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