beeaf30825518d166096531ecc08a710b120e47aa27f4c9b2219ccb56b55ca97

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 20:59

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General

Target

c99b5af66c3a23e71e1a90a3a08bf16e.exe
Size

24KB
MD5

c99b5af66c3a23e71e1a90a3a08bf16e
SHA1

a4a9d00ae1860fc19fdb523b8f0a26df89acd37b
SHA256

beeaf30825518d166096531ecc08a710b120e47aa27f4c9b2219ccb56b55ca97
SHA512

2c3abd656463e72ad65211f03020a7d08be132251306c4f7f95def46d5fcbe7a9dbb167edac1d20c71b0681eea9782fabb1eb9a0ca9b0bf7c934cab52735e192
SSDEEP

384:E3eVES+/xwGkRKJH8mlM61qmTTMVF9/q5W0:bGS+ZfbJXO8qYoAf

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"	c99b5af66c3a23e71e1a90a3a08bf16e.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	c99b5af66c3a23e71e1a90a3a08bf16e.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
1984	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
2784	NETSTAT.EXE
1600	ipconfig.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	tasklist.exe
Token: SeDebugPrivilege	2784	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4552	c99b5af66c3a23e71e1a90a3a08bf16e.exe
4552	c99b5af66c3a23e71e1a90a3a08bf16e.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 4688	4552	c99b5af66c3a23e71e1a90a3a08bf16e.exe	87
PID 4552 wrote to memory of 4688	4552	c99b5af66c3a23e71e1a90a3a08bf16e.exe	87
PID 4552 wrote to memory of 4688	4552	c99b5af66c3a23e71e1a90a3a08bf16e.exe	87
PID 4688 wrote to memory of 4452	4688	cmd.exe	89
PID 4688 wrote to memory of 4452	4688	cmd.exe	89
PID 4688 wrote to memory of 4452	4688	cmd.exe	89
PID 4688 wrote to memory of 1600	4688	cmd.exe	90
PID 4688 wrote to memory of 1600	4688	cmd.exe	90
PID 4688 wrote to memory of 1600	4688	cmd.exe	90
PID 4688 wrote to memory of 1984	4688	cmd.exe	91
PID 4688 wrote to memory of 1984	4688	cmd.exe	91
PID 4688 wrote to memory of 1984	4688	cmd.exe	91
PID 4688 wrote to memory of 1572	4688	cmd.exe	94
PID 4688 wrote to memory of 1572	4688	cmd.exe	94
PID 4688 wrote to memory of 1572	4688	cmd.exe	94
PID 1572 wrote to memory of 1104	1572	net.exe	95
PID 1572 wrote to memory of 1104	1572	net.exe	95
PID 1572 wrote to memory of 1104	1572	net.exe	95
PID 4688 wrote to memory of 2784	4688	cmd.exe	96
PID 4688 wrote to memory of 2784	4688	cmd.exe	96
PID 4688 wrote to memory of 2784	4688	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\c99b5af66c3a23e71e1a90a3a08bf16e.exe
"C:\Users\Admin\AppData\Local\Temp\c99b5af66c3a23e71e1a90a3a08bf16e.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4552
- 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:4688
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:4452
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:1600
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:1984
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1572
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:1104
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:2784

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
e315f818e36ec575e4fcae5f7a66f7e0

SHA1
b7604f79753feda1e5e8d7cf96f571e314f06643

SHA256
8b36fc75be7bb14a82ef2532cbb6ceca0ce949bcc5713e2c5bf8911587aba120

SHA512
a3a68c499b94c4429f8ea9fdf8b5019623dc58b2ddbc68df2cc968f532dd5ef26614dd772b38aa4479ea3d62e515bf9d7b3aa41565cdc5e7178a93f6f5977b61

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads