818174375a4fac53d118f9b988c1c8975720f3dc06f6f1d654dcf444142b2555

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 16:53

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General

Target

bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe
Size

14KB
MD5

bf1ebdcba1c98cc136ec5c58ce2d1f9d
SHA1

26d91c85e38fc22a15fa3234d58e226bd124f913
SHA256

818174375a4fac53d118f9b988c1c8975720f3dc06f6f1d654dcf444142b2555
SHA512

0699f252f55dab311171492396428b9ee924b3ba67a599bb7e0eaf1222e2cc7f82bf7cf86df83cf9757301f81664971798dfb2b2fba08f4bf78dc0b3b57b5342
SSDEEP

384:gvI2g4UY8ZgbgvR4drgzn63YNU/czhMd/sfF:gvI2WY8Wbgp46zn6Ihwkf

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
2284	zongximk.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4164-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/files/0x000700000002320a-4.dat	upx
behavioral2/memory/4164-6-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/2284-7-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\zongxim.dll	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe
File created	C:\Windows\SysWOW64\zongximk.exe	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe
File opened for modification	C:\Windows\SysWOW64\zongximk.exe	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4164 wrote to memory of 2284	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	88
PID 4164 wrote to memory of 2284	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	88
PID 4164 wrote to memory of 2284	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	88
PID 4164 wrote to memory of 3472	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	101
PID 4164 wrote to memory of 3472	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	101
PID 4164 wrote to memory of 3472	4164	bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe	101

C:\Users\Admin\AppData\Local\Temp\bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe
"C:\Users\Admin\AppData\Local\Temp\bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Windows\SysWOW64\zongximk.exe
  C:\Windows\system32\zongximk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2284
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe.bat
  2⤵
  PID:3472

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\bf1ebdcba1c98cc136ec5c58ce2d1f9d.exe.bat

Filesize
182B

MD5
08cefdc5dad9eca70d652d55966c1952

SHA1
b237645ec9e11b66f46b653dc182f5aa0679c799

SHA256
6ca02d764fe3a7aed397a8d88b59d61a056fb80ea381a6ebaa9d03e5573aca6d

SHA512
670d6a75a5a35a272318b29f4d97b84280eb0b6b823ab2e6ab1c71ecacfc58db3b144711e9e33d65ead0397e9f81cbcd3f9608d0722da4d02ad2a86cf61be9b6

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

Filesize
14KB

MD5
bf1ebdcba1c98cc136ec5c58ce2d1f9d

SHA1
26d91c85e38fc22a15fa3234d58e226bd124f913

SHA256
818174375a4fac53d118f9b988c1c8975720f3dc06f6f1d654dcf444142b2555

SHA512
0699f252f55dab311171492396428b9ee924b3ba67a599bb7e0eaf1222e2cc7f82bf7cf86df83cf9757301f81664971798dfb2b2fba08f4bf78dc0b3b57b5342

Download Submit
memory/2284-7-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4164-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4164-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download