41b2a7df35ce56a02f2f4db1db12ab68c1fa15d845dfe2702c312ba2dd48f7a4

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 14:41

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General

Target

265b4127b48fd2b17fcb756a684051e1.exe
Size

33KB
MD5

265b4127b48fd2b17fcb756a684051e1
SHA1

27285910ab27fb7c5232ee9b86dcaed36e76430a
SHA256

41b2a7df35ce56a02f2f4db1db12ab68c1fa15d845dfe2702c312ba2dd48f7a4
SHA512

326e40206aea0fc9dc9b82849dc87dcf2674c0366e172e1aa7e2cb13958ebf75efd7a67e735b2beedc9f4944d9e0ed70593e9e3aeccd19e9a5cc04395d8e4c6e
SSDEEP

768:n2j22WWYom8y0VsvJDIlfGMBFUGFwWEiOTdxDTdCKlwasZ3/PowD/vBW1:2iz5UlFBNk3QKDsZow7BW1

Score

7^/10

persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2548	svclss.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	svclss.exe

Loads dropped DLL 6 IoCs

pid	Process
1996	265b4127b48fd2b17fcb756a684051e1.exe
1996	265b4127b48fd2b17fcb756a684051e1.exe
2324	WerFault.exe
2324	WerFault.exe
2324	WerFault.exe
2324	WerFault.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1996-0-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral1/memory/1996-9-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral1/files/0x000e000000012247-3.dat	upx
behavioral1/memory/2548-12-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral1/memory/2548-13-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral1/memory/2548-18-0x0000000000400000-0x000000000041B000-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\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Internet Security = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\svclss.exe"	265b4127b48fd2b17fcb756a684051e1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2324	2548	WerFault.exe	28

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2548	1996	265b4127b48fd2b17fcb756a684051e1.exe	28
PID 1996 wrote to memory of 2548	1996	265b4127b48fd2b17fcb756a684051e1.exe	28
PID 1996 wrote to memory of 2548	1996	265b4127b48fd2b17fcb756a684051e1.exe	28
PID 1996 wrote to memory of 2548	1996	265b4127b48fd2b17fcb756a684051e1.exe	28
PID 2548 wrote to memory of 2324	2548	svclss.exe	30
PID 2548 wrote to memory of 2324	2548	svclss.exe	30
PID 2548 wrote to memory of 2324	2548	svclss.exe	30
PID 2548 wrote to memory of 2324	2548	svclss.exe	30

C:\Users\Admin\AppData\Local\Temp\265b4127b48fd2b17fcb756a684051e1.exe
"C:\Users\Admin\AppData\Local\Temp\265b4127b48fd2b17fcb756a684051e1.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Roaming\Microsoft\svclss.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\svclss.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 484
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2324

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

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\Microsoft\svclss.exe

Filesize
33KB

MD5
265b4127b48fd2b17fcb756a684051e1

SHA1
27285910ab27fb7c5232ee9b86dcaed36e76430a

SHA256
41b2a7df35ce56a02f2f4db1db12ab68c1fa15d845dfe2702c312ba2dd48f7a4

SHA512
326e40206aea0fc9dc9b82849dc87dcf2674c0366e172e1aa7e2cb13958ebf75efd7a67e735b2beedc9f4944d9e0ed70593e9e3aeccd19e9a5cc04395d8e4c6e

Download Submit
memory/1996-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1996-9-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1996-10-0x0000000000230000-0x000000000024B000-memory.dmp

Filesize
108KB

Download
memory/2548-12-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2548-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2548-18-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads