c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

Analysis

max time kernel
62s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 07:44

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General

Target

c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
Size

42KB
MD5

890ada7614f2d2e7aac6c8e6e6303072
SHA1

df9b19d760a09c55285a90581fb769925b1351e9
SHA256

c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72
SHA512

5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1
SSDEEP

768:rppWsMo8MeEDVWkcQjfiLzP674J52B7X07OJbzdXoiPgtPErj6ojlcKe:rruoMLiaLzY4J247ONdfgw6glj

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1160	kknijjcn.exe
1720	kknijjcn.exe

Deletes itself 1 IoCs

pid	Process
1160	kknijjcn.exe

Loads dropped DLL 6 IoCs

pid	Process
2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
1160	kknijjcn.exe
1160	kknijjcn.exe
1160	kknijjcn.exe
1160	kknijjcn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\kknijjcn.exe	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
File opened for modification	\??\c:\windows\SysWOW64\kknijjcn.exe	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.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	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	kknijjcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	kknijjcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 892	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	27
PID 2024 wrote to memory of 1160	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	28
PID 2024 wrote to memory of 1160	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	28
PID 2024 wrote to memory of 1160	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	28
PID 2024 wrote to memory of 1160	2024	c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe	28
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1224	1160	kknijjcn.exe	29
PID 1160 wrote to memory of 1720	1160	kknijjcn.exe	30
PID 1160 wrote to memory of 1720	1160	kknijjcn.exe	30
PID 1160 wrote to memory of 1720	1160	kknijjcn.exe	30
PID 1160 wrote to memory of 1720	1160	kknijjcn.exe	30
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31
PID 1720 wrote to memory of 820	1720	kknijjcn.exe	31

C:\Users\Admin\AppData\Local\Temp\c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe
"C:\Users\Admin\AppData\Local\Temp\c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
  2⤵
  PID:892
- C:\windows\SysWOW64\kknijjcn.exe
  "C:\windows\system32\kknijjcn.exe" -kill c:\users\admin\appdata\local\temp\c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72.exe /install
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Loads dropped DLL
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
    3⤵
    PID:1224
- - C:\windows\SysWOW64\kknijjcn.exe
    "C:\windows\system32\kknijjcn.exe" -kill c:\windows\syswow64\kknijjcn.exe /install /install
    3⤵
    - Executes dropped EXE
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:1720
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
      4⤵
      PID:820

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\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

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

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

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

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
\Windows\SysWOW64\kknijjcn.exe

Filesize
42KB

MD5
890ada7614f2d2e7aac6c8e6e6303072

SHA1
df9b19d760a09c55285a90581fb769925b1351e9

SHA256
c247ef34d54ba95b7bbf6aa776924648259324f94ddd0349521026d3c6b52c72

SHA512
5306b3df97f2ffd011533412b09774a737c4aab8e21c9489fc15ef48c60c94bd8dfc16ed0e58301934b5a20487cf843327f2459d62af9c0e51025f48cb621fb1

Download Submit
memory/2024-61-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2024-56-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2024-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

Filesize
8KB

Download