b4c09f38796cec7b6e790b8956f585109065e9b70f972b50e3263c5f1af06145

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01-01-2024 16:13

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General

Target

3d4e1b27dccfe21fa8c30114c5f5cfd0.exe
Size

1.2MB
MD5

3d4e1b27dccfe21fa8c30114c5f5cfd0
SHA1

abbde50823ab86fc33e857e3f6f4d108d427543a
SHA256

b4c09f38796cec7b6e790b8956f585109065e9b70f972b50e3263c5f1af06145
SHA512

05653fd983eeec5f78521d405809f88f97fa46967e6562a5967c58617e327ba3103e86831935437ecf91443d71735eb143c8db7c756f71eb2e85bbf0f3c15ec3
SSDEEP

24576:GIxx4RfxnUcoCdqr0Lk7OmII9JH6Qm0+eihOEKYjRiZ2TJlsd:wUA0ND6JeiOE7jUZYQd

Score

8^/10

persistence

Malware Config

Signatures

Uses Session Manager for persistence 2 TTPs 3 IoCs

Creates Session Manager registry key to run executable early in system boot.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\Control\Session Manager\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system\\service.exe"	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\reg_k1.txt	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\service.exe	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe
File opened for modification	C:\Windows\system\service.exe	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2372	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	28
PID 2364 wrote to memory of 2372	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	28
PID 2364 wrote to memory of 2372	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	28
PID 2364 wrote to memory of 2372	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	28
PID 2364 wrote to memory of 2204	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	30
PID 2364 wrote to memory of 2204	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	30
PID 2364 wrote to memory of 2204	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	30
PID 2364 wrote to memory of 2204	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	30
PID 2364 wrote to memory of 2672	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	31
PID 2364 wrote to memory of 2672	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	31
PID 2364 wrote to memory of 2672	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	31
PID 2364 wrote to memory of 2672	2364	3d4e1b27dccfe21fa8c30114c5f5cfd0.exe	31

C:\Users\Admin\AppData\Local\Temp\3d4e1b27dccfe21fa8c30114c5f5cfd0.exe
"C:\Users\Admin\AppData\Local\Temp\3d4e1b27dccfe21fa8c30114c5f5cfd0.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet001\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2372
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet002\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2204
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2364-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2364-2-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads