a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e

Analysis

max time kernel
152s
max time network
80s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 00:01

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General

Target

a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
Size

44KB
MD5

528b9c115d04a42cbc9e708a30dc1b72
SHA1

13bb2778f317bce63cdcb2f36fb67f663f5011f5
SHA256

a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e
SHA512

3785679747183c61b26ef126591642e3821c30cbef6c509946a0d8d5100d5333a3568176f17e92f5d04fd0e8f9ee2c031c3e9fe7eac527ac192ee4a6ba05dcc8
SSDEEP

384:/TSjaZaaH2fRFsN1lNhECh0cUSlgXmF0KloSrYjPQ1M0z8ueD00SnZWf7:/mjTJY1lNXhXUa6Q0KlXrYj+z8/qcf

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1952	winlogon.exe

Loads dropped DLL 2 IoCs

pid	Process
748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winlogon = "c:\\Windows\\Winmain\\winlogon.exe"	winlogon.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	\??\c:\Windows\Winmain\winlogon.exe	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
File opened for modification	\??\c:\Windows\Winmain\winlogon.exe	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
File created	\??\c:\Windows\Winmain\winlogon.exe	winlogon.exe
File created	\??\c:\Windows\System32.dat	winlogon.exe
File opened for modification	\??\c:\Windows\System32.dat	winlogon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
1952	winlogon.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1952	748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe	27
PID 748 wrote to memory of 1952	748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe	27
PID 748 wrote to memory of 1952	748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe	27
PID 748 wrote to memory of 1952	748	a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe	27

C:\Users\Admin\AppData\Local\Temp\a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe
"C:\Users\Admin\AppData\Local\Temp\a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:748
- \??\c:\Windows\Winmain\winlogon.exe
  c:\Windows\Winmain\winlogon.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:1952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Winmain\winlogon.exe

Filesize
44KB

MD5
528b9c115d04a42cbc9e708a30dc1b72

SHA1
13bb2778f317bce63cdcb2f36fb67f663f5011f5

SHA256
a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e

SHA512
3785679747183c61b26ef126591642e3821c30cbef6c509946a0d8d5100d5333a3568176f17e92f5d04fd0e8f9ee2c031c3e9fe7eac527ac192ee4a6ba05dcc8

Download Submit
\??\c:\Windows\Winmain\winlogon.exe

Filesize
44KB

MD5
528b9c115d04a42cbc9e708a30dc1b72

SHA1
13bb2778f317bce63cdcb2f36fb67f663f5011f5

SHA256
a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e

SHA512
3785679747183c61b26ef126591642e3821c30cbef6c509946a0d8d5100d5333a3568176f17e92f5d04fd0e8f9ee2c031c3e9fe7eac527ac192ee4a6ba05dcc8

Download Submit
\Windows\Winmain\winlogon.exe

Filesize
44KB

MD5
528b9c115d04a42cbc9e708a30dc1b72

SHA1
13bb2778f317bce63cdcb2f36fb67f663f5011f5

SHA256
a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e

SHA512
3785679747183c61b26ef126591642e3821c30cbef6c509946a0d8d5100d5333a3568176f17e92f5d04fd0e8f9ee2c031c3e9fe7eac527ac192ee4a6ba05dcc8

Download Submit
\Windows\Winmain\winlogon.exe

Filesize
44KB

MD5
528b9c115d04a42cbc9e708a30dc1b72

SHA1
13bb2778f317bce63cdcb2f36fb67f663f5011f5

SHA256
a08338594bf10cbe2214d6748800f0660a7720d30449b61fb9593416f1a8826e

SHA512
3785679747183c61b26ef126591642e3821c30cbef6c509946a0d8d5100d5333a3568176f17e92f5d04fd0e8f9ee2c031c3e9fe7eac527ac192ee4a6ba05dcc8

Download Submit
memory/1952-63-0x0000000074FB1000-0x0000000074FB3000-memory.dmp

Filesize
8KB

Download