9b391d5bacc3b30ef87d8aa2197ba6d49c254b21d9d1901e79a2e90c9307c8a9

Analysis

max time kernel
150s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 07:05

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General

Target

b417520adc01a922c56f942f4075de98.exe
Size

10KB
MD5

b417520adc01a922c56f942f4075de98
SHA1

8835512659b8a04266a2643bacea84e2dc4e95d7
SHA256

9b391d5bacc3b30ef87d8aa2197ba6d49c254b21d9d1901e79a2e90c9307c8a9
SHA512

716a9bf30eea000cc1bae67642e7b70f34c0a38d5cf52049baca458e95f21bd9228a09b9cdd779928f27af2f9b25f4553cce02d58b24c70bca0456e974b33ae0
SSDEEP

192:70Abfjwc03Ex8Swcp/nncrR37vOhGytPg+Q+:7fDEx3E6SnPcrRLly9gd+

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
2672	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	reglakok.exe

Loads dropped DLL 2 IoCs

pid	Process
1784	b417520adc01a922c56f942f4075de98.exe
1784	b417520adc01a922c56f942f4075de98.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x000c000000015a2d-3.dat	upx
behavioral1/memory/1784-4-0x0000000000030000-0x000000000003F000-memory.dmp	upx
behavioral1/memory/1384-11-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/1784-19-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/1384-21-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\reglakok.exe	b417520adc01a922c56f942f4075de98.exe
File opened for modification	C:\Windows\SysWOW64\reglakok.exe	b417520adc01a922c56f942f4075de98.exe
File created	C:\Windows\SysWOW64\reglako.dll	b417520adc01a922c56f942f4075de98.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 1384	1784	b417520adc01a922c56f942f4075de98.exe	28
PID 1784 wrote to memory of 1384	1784	b417520adc01a922c56f942f4075de98.exe	28
PID 1784 wrote to memory of 1384	1784	b417520adc01a922c56f942f4075de98.exe	28
PID 1784 wrote to memory of 1384	1784	b417520adc01a922c56f942f4075de98.exe	28
PID 1784 wrote to memory of 2672	1784	b417520adc01a922c56f942f4075de98.exe	29
PID 1784 wrote to memory of 2672	1784	b417520adc01a922c56f942f4075de98.exe	29
PID 1784 wrote to memory of 2672	1784	b417520adc01a922c56f942f4075de98.exe	29
PID 1784 wrote to memory of 2672	1784	b417520adc01a922c56f942f4075de98.exe	29

C:\Users\Admin\AppData\Local\Temp\b417520adc01a922c56f942f4075de98.exe
"C:\Users\Admin\AppData\Local\Temp\b417520adc01a922c56f942f4075de98.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\SysWOW64\reglakok.exe
  C:\Windows\system32\reglakok.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:1384
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\b417520adc01a922c56f942f4075de98.exe.bat
  2⤵
  - Deletes itself
  PID:2672

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

C:\Users\Admin\AppData\Local\Temp\b417520adc01a922c56f942f4075de98.exe.bat

Filesize
182B

MD5
1c8a49393889d8a23037a8e9d612f8df

SHA1
f95aedfb1474c223df41d4533ad9a2720ff5d143

SHA256
e38106c81f221a9437c73dfcae1807b7ac227ed1d74bcfb894e40d9c3c18d705

SHA512
869116b121164d8623bfc240b29e2b5419b212db9e2c8eca146e458006ecf8df31e92418b26e686e0e42d9d61cf654fa1caac767cee846fd23c3e97e6eb877ea

Download Submit
\Windows\SysWOW64\reglakok.exe

Filesize
10KB

MD5
b417520adc01a922c56f942f4075de98

SHA1
8835512659b8a04266a2643bacea84e2dc4e95d7

SHA256
9b391d5bacc3b30ef87d8aa2197ba6d49c254b21d9d1901e79a2e90c9307c8a9

SHA512
716a9bf30eea000cc1bae67642e7b70f34c0a38d5cf52049baca458e95f21bd9228a09b9cdd779928f27af2f9b25f4553cce02d58b24c70bca0456e974b33ae0

Download Submit
memory/1384-11-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1384-21-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1784-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1784-4-0x0000000000030000-0x000000000003F000-memory.dmp

Filesize
60KB

Download
memory/1784-19-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download