e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82

Analysis

max time kernel
38s
max time network
112s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
08-11-2022 21:05

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General

Target

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
Size

48KB
MD5

0bfe6357cc37d49ee87637c5de9930c0
SHA1

6dc3a08ca27700a7c61a0066bf9238830c0f47af
SHA256

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82
SHA512

c793d477410f1b54ca3c8daede9bd9965b3b69f1cfa3cff1fb1ea76cb5daf6ba6074acc1a31ddab4dc6c1d15b34f9c0e10e1d5c84a10b9c829344de84f7cc715
SSDEEP

768:Dz+0imCW6OpcwbS+3qyRTc7fFAHA6vwv16aV51QaOOQdlxv7Qeqg+xN0OaEza0iI:/+0jzcoT+Cz+jBza0iI

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1608 takeown.exe
872 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1608 takeown.exe
872 icacls.exe

pid	process
1608	takeown.exe
872	icacls.exe

pid	process
1608	takeown.exe
872	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\sgMFf = "c:\\windows\\system32\\rebl.exe"	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

Drops file in System32 directory 2 IoCs

Processes:

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\rebl.exe	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
File opened for modification	\??\c:\windows\SysWOW64\rebl.exe	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

pid process

956 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

pid	process
956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe

description	pid	process	target process
PID 956 wrote to memory of 1608	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	takeown.exe
PID 956 wrote to memory of 1608	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	takeown.exe
PID 956 wrote to memory of 1608	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	takeown.exe
PID 956 wrote to memory of 1608	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	takeown.exe
PID 956 wrote to memory of 872	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	icacls.exe
PID 956 wrote to memory of 872	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	icacls.exe
PID 956 wrote to memory of 872	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	icacls.exe
PID 956 wrote to memory of 872	956	e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
"C:\Users\Admin\AppData\Local\Temp\e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "c:\windows\system32\rebl.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1608

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "c:\windows\system32\rebl.exe" /grant Users:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:872

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\??\c:\windows\SysWOW64\rebl.exe
Filesize
48KB

MD5
0bfe6357cc37d49ee87637c5de9930c0

SHA1
6dc3a08ca27700a7c61a0066bf9238830c0f47af

SHA256
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82

SHA512
c793d477410f1b54ca3c8daede9bd9965b3b69f1cfa3cff1fb1ea76cb5daf6ba6074acc1a31ddab4dc6c1d15b34f9c0e10e1d5c84a10b9c829344de84f7cc715

Download Submit
memory/872-57-0x0000000000000000-mapping.dmp

Download
memory/1608-56-0x0000000000000000-mapping.dmp

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