fbfd354cee70d330f86293b167b5d9df03dd384d796870e76a0cab5cce8e990b

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 01:38

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General

Target

230e363c79668e08add90ab9653a8421.exe
Size

80KB
MD5

230e363c79668e08add90ab9653a8421
SHA1

4f1e8b43ccbbc7bfe9dda4c353efd6cc557c5f46
SHA256

fbfd354cee70d330f86293b167b5d9df03dd384d796870e76a0cab5cce8e990b
SHA512

3dfe1e386549240ac026aab1dc5e6d72f2363cb88af0d32daccec75fc9ff7f6b8c75ffd3be26ab247a4885497b61a72a4bd7d16bab6dde03d0ac474f98f7508d
SSDEEP

1536:q/YKbiDTW03TN7vPs9NoruIMbdS9baW1JdQYjMQqb:qQLDTdTtvPs9qr6S9GAdQYAQ

Score

8^/10

evasion persistence

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1584	attrib.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\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\windows\\system32\\csvclhosts.exe"	230e363c79668e08add90ab9653a8421.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\windows\SysWOW64\csvclhosts.exe	230e363c79668e08add90ab9653a8421.exe
File opened for modification	C:\windows\SysWOW64\csvclhosts.exe	230e363c79668e08add90ab9653a8421.exe
File opened for modification	C:\windows\SysWOW64\csvclhosts.exe	attrib.exe
File created	C:\windows\SysWOW64\Blliss.scr	230e363c79668e08add90ab9653a8421.exe
File opened for modification	C:\windows\SysWOW64\Blliss.scr	230e363c79668e08add90ab9653a8421.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1868	230e363c79668e08add90ab9653a8421.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1868	230e363c79668e08add90ab9653a8421.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 1584	1868	230e363c79668e08add90ab9653a8421.exe	88
PID 1868 wrote to memory of 1584	1868	230e363c79668e08add90ab9653a8421.exe	88
PID 1868 wrote to memory of 1584	1868	230e363c79668e08add90ab9653a8421.exe	88

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1584	attrib.exe

C:\Users\Admin\AppData\Local\Temp\230e363c79668e08add90ab9653a8421.exe
"C:\Users\Admin\AppData\Local\Temp\230e363c79668e08add90ab9653a8421.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\SysWOW64\attrib.exe
  attrib +r +s +h C:\windows\system32\csvclhosts.exe
  2⤵
  - Sets file to hidden
  - Drops file in System32 directory
  - Views/modifies file attributes
  PID:1584

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\windows\SysWOW64\csvclhosts.exe

Filesize
80KB

MD5
230e363c79668e08add90ab9653a8421

SHA1
4f1e8b43ccbbc7bfe9dda4c353efd6cc557c5f46

SHA256
fbfd354cee70d330f86293b167b5d9df03dd384d796870e76a0cab5cce8e990b

SHA512
3dfe1e386549240ac026aab1dc5e6d72f2363cb88af0d32daccec75fc9ff7f6b8c75ffd3be26ab247a4885497b61a72a4bd7d16bab6dde03d0ac474f98f7508d

Download Submit
memory/1868-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads