81a0fbf5bb98f65c5c7c8140113b555bf3712477163cad9146f2f585cf458cbd

Analysis

max time kernel
91s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 02:26

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General

Target

4ca1d55fc6c8f36d8e435cf9743b1b2e.exe
Size

24KB
MD5

4ca1d55fc6c8f36d8e435cf9743b1b2e
SHA1

16cb028e0d876d0654b7cec76948b6220b76e583
SHA256

81a0fbf5bb98f65c5c7c8140113b555bf3712477163cad9146f2f585cf458cbd
SHA512

d9b7178a882f4e1e7587314b8a59c98aeec28e56b1c31907288faaf0d83676a5be5429cdaf52930410fd9762b34896f686ff7d5b87e8d2d80e97ae2cb7d63521
SSDEEP

384:E3eVES+/xwGkRKJtCxlM61qmTTMVF9/q5K0:bGS+ZfbJ4xO8qYoA7

Score

6^/10

persistence

Malware Config

Signatures

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\Start GeekBuddy = "C:\\Program Files\\Common Files\\Microsoft Shared\\Web Folders\\1033\\spoolsv.exe"	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\Web Folders\1033\spoolsv.exe	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
100	tasklist.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
3484	ipconfig.exe
3828	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	100	tasklist.exe
Token: SeDebugPrivilege	3828	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1996	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe
1996	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 3924	1996	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe	20
PID 1996 wrote to memory of 3924	1996	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe	20
PID 1996 wrote to memory of 3924	1996	4ca1d55fc6c8f36d8e435cf9743b1b2e.exe	20
PID 3924 wrote to memory of 2012	3924	cmd.exe	21
PID 3924 wrote to memory of 2012	3924	cmd.exe	21
PID 3924 wrote to memory of 2012	3924	cmd.exe	21
PID 3924 wrote to memory of 3484	3924	cmd.exe	26
PID 3924 wrote to memory of 3484	3924	cmd.exe	26
PID 3924 wrote to memory of 3484	3924	cmd.exe	26
PID 3924 wrote to memory of 100	3924	cmd.exe	22
PID 3924 wrote to memory of 100	3924	cmd.exe	22
PID 3924 wrote to memory of 100	3924	cmd.exe	22
PID 3924 wrote to memory of 1088	3924	cmd.exe	30
PID 3924 wrote to memory of 1088	3924	cmd.exe	30
PID 3924 wrote to memory of 1088	3924	cmd.exe	30
PID 1088 wrote to memory of 4400	1088	net.exe	28
PID 1088 wrote to memory of 4400	1088	net.exe	28
PID 1088 wrote to memory of 4400	1088	net.exe	28
PID 3924 wrote to memory of 3828	3924	cmd.exe	29
PID 3924 wrote to memory of 3828	3924	cmd.exe	29
PID 3924 wrote to memory of 3828	3924	cmd.exe	29

C:\Users\Admin\AppData\Local\Temp\4ca1d55fc6c8f36d8e435cf9743b1b2e.exe
"C:\Users\Admin\AppData\Local\Temp\4ca1d55fc6c8f36d8e435cf9743b1b2e.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3924
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:2012
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:100
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:3484
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:3828
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1088

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start
1⤵
PID:4400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\temp\flash.log

Filesize
14KB

MD5
9b53797147a5e8639394a63510ea157f

SHA1
922c6f3ed640657b6e399d39e429a27d9521f5e3

SHA256
de5146fe0e64f4aba5000b62f9d40ad4995680c1267e0285b136e5da8b36a218

SHA512
a2685b66342ed59229fd3077065ec4cb4507a3755ca925e338584ab572a9c7ab784747216dfc73a54deac944c9ff10c6bd23a8395291004f5e0f3c0ff08a84f7

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads