8751cec19afe7e8f43e8c68a8a11c6f73c85dcc57062e8aa7c1af1cb8ab327aa

Analysis

max time kernel
149s
max time network
63s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 23:05

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General

Target

1f61987742e182517c91daf457c3c548.exe
Size

944KB
MD5

1f61987742e182517c91daf457c3c548
SHA1

25c2a86ea6ad232245352a12f4b9262dc3b84ea3
SHA256

8751cec19afe7e8f43e8c68a8a11c6f73c85dcc57062e8aa7c1af1cb8ab327aa
SHA512

57cf3184539f9440c3ce1ba6a439c3af4cada68de46305958fb99a3296c2d7e2d4e12627d9cdc8280e1f286dddd83c255eff4e732c92d624b2514f00784fbcea
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjmV:r5sJo6YrFUiyAak11LtjmV

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3800	svchest425075242507520.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4748-0-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/4748-1-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/3800-10-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/3800-13-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/3800-11-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/4748-14-0x0000000000400000-0x0000000000597000-memory.dmp	upx

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\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1f61987742e182517c91daf457c3c548.exe"	1f61987742e182517c91daf457c3c548.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4748	1f61987742e182517c91daf457c3c548.exe
3800	svchest425075242507520.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	\??\c:\Windows\BJ.exe	1f61987742e182517c91daf457c3c548.exe
File opened for modification	\??\c:\Windows\BJ.exe	1f61987742e182517c91daf457c3c548.exe
File created	\??\c:\Windows\svchest425075242507520.exe	1f61987742e182517c91daf457c3c548.exe
File opened for modification	\??\c:\Windows\svchest425075242507520.exe	1f61987742e182517c91daf457c3c548.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 3800	4748	1f61987742e182517c91daf457c3c548.exe	22
PID 4748 wrote to memory of 3800	4748	1f61987742e182517c91daf457c3c548.exe	22
PID 4748 wrote to memory of 3800	4748	1f61987742e182517c91daf457c3c548.exe	22

C:\Users\Admin\AppData\Local\Temp\1f61987742e182517c91daf457c3c548.exe
"C:\Users\Admin\AppData\Local\Temp\1f61987742e182517c91daf457c3c548.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4748
- \??\c:\Windows\svchest425075242507520.exe
  c:\Windows\svchest425075242507520.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:3800

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/3800-10-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/3800-13-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/3800-11-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/4748-0-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/4748-1-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/4748-14-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads