c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba

Analysis

max time kernel
32s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07-11-2022 05:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe
Size

40KB
MD5

056929e078b133dd231903ce0293f1e0
SHA1

24aaff0cca4266d08545cfa438df8f5da87caa02
SHA256

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba
SHA512

636c143a2ef1bc828e2d9f1e5ca3b457a7a222ab1219d261936ebbd0adab15a6c26f66e821f55967b45f8b896d3088934435b2a0be5059edcda85144b4ba6697
SSDEEP

768:/O8QOt6m1+Mj2y75iaAVWwedbsfB94OMrA8ihATMk3LOL++i4:/O8QRMjOVDeqfB94OMrA8ihS7LOL+n4

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

icacls.exetakeown.exe

pid process

1984 icacls.exe
1972 takeown.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1972 takeown.exe
1984 icacls.exe

pid	process
1984	icacls.exe
1972	takeown.exe

pid	process
1972	takeown.exe
1984	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\vyor = "C:\\Windows\\system32\\yshno.exe"	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

Drops file in System32 directory 2 IoCs

Processes:

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\yshno.exe	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe
File created	C:\Windows\SysWOW64\yshno.exe	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

pid process

1992 c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

pid	process
1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe

description	pid	process	target process
PID 1992 wrote to memory of 1972	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	takeown.exe
PID 1992 wrote to memory of 1972	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	takeown.exe
PID 1992 wrote to memory of 1972	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	takeown.exe
PID 1992 wrote to memory of 1972	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	takeown.exe
PID 1992 wrote to memory of 1984	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	icacls.exe
PID 1992 wrote to memory of 1984	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	icacls.exe
PID 1992 wrote to memory of 1984	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	icacls.exe
PID 1992 wrote to memory of 1984	1992	c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe
"C:\Users\Admin\AppData\Local\Temp\c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\takeown.exe
  C:\Windows\system32\takeown.exe /f "C:\Windows\system32\yshno.exe"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1972
- C:\Windows\SysWOW64\icacls.exe
  C:\Windows\system32\icacls.exe "C:\Windows\system32\yshno.exe" /grant Users:F
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\yshno.exe

Filesize
40KB

MD5
056929e078b133dd231903ce0293f1e0

SHA1
24aaff0cca4266d08545cfa438df8f5da87caa02

SHA256
c6afa31931605bdfdaf698053eff9a0d00835265d38d1006d6c1192f7292a6ba

SHA512
636c143a2ef1bc828e2d9f1e5ca3b457a7a222ab1219d261936ebbd0adab15a6c26f66e821f55967b45f8b896d3088934435b2a0be5059edcda85144b4ba6697

Download Submit
memory/1972-56-0x0000000000000000-mapping.dmp

Download
memory/1984-57-0x0000000000000000-mapping.dmp

Download