20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872c

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 05:46

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General

Target

20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe
Size

291KB
MD5

e429fe0fc0f2e7219ec097cf5fdc7160
SHA1

08b45aaed59f58d88684cab223c817f16062debd
SHA256

20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872c
SHA512

f71ed385d4e169fa44d62901d8c2059f83aae15671e25a686f6a10a1ca4919410199bed95caf8b831302b38ef8429c18aa34ccc940fc88826aaed080329c9e22
SSDEEP

6144:S/0uod/r8s82NQCwJF1eUfxZYJG2pwj6+82DrNz3W4LhvPjY:SJa92CmFWmO+7Dd3vhXE

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3596	serv.exe
4420	serv.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5100	3596	WerFault.exe	82
1032	4420	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	serv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	serv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 3596	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	82
PID 2080 wrote to memory of 3596	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	82
PID 2080 wrote to memory of 3596	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	82
PID 2080 wrote to memory of 4420	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	86
PID 2080 wrote to memory of 4420	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	86
PID 2080 wrote to memory of 4420	2080	20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe	86

C:\Users\Admin\AppData\Local\Temp\20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe
"C:\Users\Admin\AppData\Local\Temp\20b678dc028741e96f7cf0bb33ce84415dee539518472c67343ce52cbc45872cN.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\serv.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\serv.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3596
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3596 -s 568
    3⤵
    - Program crash
    PID:5100
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\serv.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\serv.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4420 -s 564
    3⤵
    - Program crash
    PID:1032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3596 -ip 3596
1⤵
PID:3964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4420 -ip 4420
1⤵
PID:844

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\serv.exe

Filesize
312KB

MD5
93d9bf18946a2ff3c8d91953726d0d65

SHA1
7e08022cf319ebaf3bb22fb4a2d898d9739cfee6

SHA256
16cf040ebf018d43590eb173e8d2c09bfe1c1c46d0c848091580cbe1fffad0a8

SHA512
3001649c3e26889d5d8b81bd972a71642e1ca5c766b15dc55ffac2dccbd11d91cff7c58f5457a272aef2102f12cc03a4afc6b3a8b929f05f132c64a0a98e9637

Download Submit
memory/3596-5-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/3596-6-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4420-8-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/4420-9-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads