8eaa4f17e4f3a65cde77afc15e4f1d77d04642ec9bbdedc83e00536ad12bf77d

Analysis

max time kernel
113s
max time network
127s
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 06:35

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General

Target

1130c4bb586bd5d11ef66d185dd8edc1.exe
Size

14KB
MD5

1130c4bb586bd5d11ef66d185dd8edc1
SHA1

cf2bd11e606c19d285a2b32b8ca504c0802560b3
SHA256

8eaa4f17e4f3a65cde77afc15e4f1d77d04642ec9bbdedc83e00536ad12bf77d
SHA512

521f6b5fd2869887b0eebcc129a6358fe4d233448da26a7fefd5cd7825e86504816fbcf309a6189e0fcce2e11e36317190b10279296ad7fe384edbedc3d305af
SSDEEP

384:IJBse9eTnP7xChPQy3vq5C8qYK+7XwIJG7E9RvP:IJuseTnP7chrZ8Kaww39Rv

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
4920	xuntxnk.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4500-0-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/files/0x000900000002312b-4.dat	upx
behavioral2/memory/4500-8-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/4920-10-0x0000000000400000-0x0000000000411000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\xuntxn.dll	1130c4bb586bd5d11ef66d185dd8edc1.exe
File created	C:\Windows\SysWOW64\xuntxnk.exe	1130c4bb586bd5d11ef66d185dd8edc1.exe
File opened for modification	C:\Windows\SysWOW64\xuntxnk.exe	1130c4bb586bd5d11ef66d185dd8edc1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4500	1130c4bb586bd5d11ef66d185dd8edc1.exe
4500	1130c4bb586bd5d11ef66d185dd8edc1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 4920	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	94
PID 4500 wrote to memory of 4920	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	94
PID 4500 wrote to memory of 4920	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	94
PID 4500 wrote to memory of 1504	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	97
PID 4500 wrote to memory of 1504	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	97
PID 4500 wrote to memory of 1504	4500	1130c4bb586bd5d11ef66d185dd8edc1.exe	97

C:\Users\Admin\AppData\Local\Temp\1130c4bb586bd5d11ef66d185dd8edc1.exe
"C:\Users\Admin\AppData\Local\Temp\1130c4bb586bd5d11ef66d185dd8edc1.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Windows\SysWOW64\xuntxnk.exe
  C:\Windows\system32\xuntxnk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:4920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\1130c4bb586bd5d11ef66d185dd8edc1.exe.bat
  2⤵
  PID:1504

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\1130c4bb586bd5d11ef66d185dd8edc1.exe.bat

Filesize
173B

MD5
b0a8268016d12c17050d14d27b0e5ea9

SHA1
93c502abfb0d86c322006bf24fa25388064b69da

SHA256
89c52386ff269b7e0992ff4adfcd039f16e40c924b56308589e12a56a2537987

SHA512
09dcc4eea6302b7dd03d736bde4d87ae5a54b74f667c569c4bcdd0055a53dbd0d62024d3d3c3f4470298f58872eab3a3c1e99a197eebfbfd1177b116572bb345

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

Filesize
14KB

MD5
1130c4bb586bd5d11ef66d185dd8edc1

SHA1
cf2bd11e606c19d285a2b32b8ca504c0802560b3

SHA256
8eaa4f17e4f3a65cde77afc15e4f1d77d04642ec9bbdedc83e00536ad12bf77d

SHA512
521f6b5fd2869887b0eebcc129a6358fe4d233448da26a7fefd5cd7825e86504816fbcf309a6189e0fcce2e11e36317190b10279296ad7fe384edbedc3d305af

Download Submit
memory/4500-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4500-8-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4920-10-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download