c24db7e10b51b36943fe33aa902a90a92b8f364ecd519a5139808dffd73d5b21

Analysis

max time kernel
151s
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
30/12/2023, 13:25

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General

Target

19f084883a390aa27bdac77e03018827.exe
Size

12KB
MD5

19f084883a390aa27bdac77e03018827
SHA1

016c607fa7fa1d17a127a383d9d0b2695789311f
SHA256

c24db7e10b51b36943fe33aa902a90a92b8f364ecd519a5139808dffd73d5b21
SHA512

8daddd6bc6228a8af265da7a227cd71d9c13c64e7171afa34e07cb2a5da51caba707f174bc334b5c7549870496e8701ea5884ff9d60d5ce434f706f8cb47eab5
SSDEEP

192:1Pu75a3XxbeWIHqP8SEXY/ifwGNNZlnuIpveWuPEHABFWo7Slqukb:1Pu75a3h6WIHqP8lZlnJveWkEgzWzq/

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

Executes dropped EXE 1 IoCs

pid	Process
4408	cupopsk.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3324-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/files/0x00070000000231f7-4.dat	upx
behavioral2/memory/3324-6-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/4408-7-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\cupopsk.exe	19f084883a390aa27bdac77e03018827.exe
File created	C:\Windows\SysWOW64\cupops.dll	19f084883a390aa27bdac77e03018827.exe
File created	C:\Windows\SysWOW64\cupopsk.exe	19f084883a390aa27bdac77e03018827.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3324 wrote to memory of 4408	3324	19f084883a390aa27bdac77e03018827.exe	91
PID 3324 wrote to memory of 4408	3324	19f084883a390aa27bdac77e03018827.exe	91
PID 3324 wrote to memory of 4408	3324	19f084883a390aa27bdac77e03018827.exe	91
PID 3324 wrote to memory of 3456	3324	19f084883a390aa27bdac77e03018827.exe	100
PID 3324 wrote to memory of 3456	3324	19f084883a390aa27bdac77e03018827.exe	100
PID 3324 wrote to memory of 3456	3324	19f084883a390aa27bdac77e03018827.exe	100

C:\Users\Admin\AppData\Local\Temp\19f084883a390aa27bdac77e03018827.exe
"C:\Users\Admin\AppData\Local\Temp\19f084883a390aa27bdac77e03018827.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3324
- C:\Windows\SysWOW64\cupopsk.exe
  C:\Windows\system32\cupopsk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:4408
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\19f084883a390aa27bdac77e03018827.exe.bat
  2⤵
  PID:3456

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\19f084883a390aa27bdac77e03018827.exe.bat

Filesize
182B

MD5
0d16d4f4704ab55cda5e4da4599748d9

SHA1
96f4af455c9815a950d016b0130bc6eacc68a430

SHA256
0aeb3e1c253d0c0ddfff54bb2c1c0d0391451ebf729da88d2b6f19f1226b800d

SHA512
7564961573872096b5dcd9a85732869e1424c275a96be66907a295a75852baca2782ad85f5eb7b3dc5a06af7398ff0a12ca8c01ec83e5135d1c3510eae0478e4

Download Submit
C:\Windows\SysWOW64\cupopsk.exe

Filesize
12KB

MD5
19f084883a390aa27bdac77e03018827

SHA1
016c607fa7fa1d17a127a383d9d0b2695789311f

SHA256
c24db7e10b51b36943fe33aa902a90a92b8f364ecd519a5139808dffd73d5b21

SHA512
8daddd6bc6228a8af265da7a227cd71d9c13c64e7171afa34e07cb2a5da51caba707f174bc334b5c7549870496e8701ea5884ff9d60d5ce434f706f8cb47eab5

Download Submit
memory/3324-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3324-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4408-7-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download