df739436395583f15639789b85e4a564a9fec4eb6aa5522288f784d80ad17caf

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
10/01/2024, 19:40

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General

Target

516ec40d651716d122d8bc42da1bc604.exe
Size

86KB
MD5

516ec40d651716d122d8bc42da1bc604
SHA1

59e7111af26a4587da0f78e503728b67491a37a1
SHA256

df739436395583f15639789b85e4a564a9fec4eb6aa5522288f784d80ad17caf
SHA512

0e6cc8f2e6917bf5e7cb0dc2012ddec22335ea0c87fdce87d79c914d7784058e0ace3863128b76fa7e7ed9042378def4afb1407ebdca87eb1f3d5e9bb89050e1
SSDEEP

1536:luMyiWMPfQSiy6kWLVvBOQ+ptrblnouy8:USW+fQSIkQVv8QGJ9out

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3776	SiZhu.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/444-0-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/files/0x00020000000228c7-3.dat	upx
behavioral2/memory/3776-10-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/444-14-0x0000000000400000-0x0000000000429000-memory.dmp	upx

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	516ec40d651716d122d8bc42da1bc604.exe
File opened (read-only)	\??\H:	516ec40d651716d122d8bc42da1bc604.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\SiZhu.exe	SiZhu.exe
File opened for modification	C:\Windows\SysWOW64\SiZhu.exe	516ec40d651716d122d8bc42da1bc604.exe
File created	C:\Windows\SysWOW64\SiZhu.exe	516ec40d651716d122d8bc42da1bc604.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
444	516ec40d651716d122d8bc42da1bc604.exe
444	516ec40d651716d122d8bc42da1bc604.exe
3776	SiZhu.exe
3776	SiZhu.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
652	Process not Found
652	Process not Found

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 444 wrote to memory of 3776	444	516ec40d651716d122d8bc42da1bc604.exe	94
PID 444 wrote to memory of 3776	444	516ec40d651716d122d8bc42da1bc604.exe	94
PID 444 wrote to memory of 3776	444	516ec40d651716d122d8bc42da1bc604.exe	94
PID 3776 wrote to memory of 3416	3776	SiZhu.exe	95
PID 3776 wrote to memory of 3416	3776	SiZhu.exe	95
PID 3776 wrote to memory of 3416	3776	SiZhu.exe	95
PID 444 wrote to memory of 2416	444	516ec40d651716d122d8bc42da1bc604.exe	96
PID 444 wrote to memory of 2416	444	516ec40d651716d122d8bc42da1bc604.exe	96
PID 444 wrote to memory of 2416	444	516ec40d651716d122d8bc42da1bc604.exe	96

C:\Users\Admin\AppData\Local\Temp\516ec40d651716d122d8bc42da1bc604.exe
"C:\Users\Admin\AppData\Local\Temp\516ec40d651716d122d8bc42da1bc604.exe"
1⤵
- Enumerates connected drives
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:444
- C:\Windows\SysWOW64\SiZhu.exe
  C:\Windows\system32\SiZhu.exe SiZhu
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3776
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~SiGou.bat
    3⤵
    PID:3416
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~SiGou.bat
  2⤵
  PID:2416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~SiGou.bat

Filesize
130B

MD5
05f52e759c787bfbf843ba36ccf734a2

SHA1
2d81a279dd24a320a62d184fec747ca5f70570ee

SHA256
4c9b671f2169b55c0265974d2d618e9e03060a0664da88c05ea580be9eb2a7a9

SHA512
efcbce3fbcb8a0e22d4b41bfcf7afe73e5dd1bf4ceded4892fdd060e993dcf7c3930c989b6eb4fe1b690ced1f70a0e9ef75dfe6b5e2a61f9be14ef9169c6d172

Download Submit
C:\Users\Admin\AppData\Local\Temp\~SiGou.bat

Filesize
212B

MD5
9ef34f7b7ab3b91f528a6681d505dc81

SHA1
88831bf35b2f840f9eeceea10854a59fa6f49a7e

SHA256
e1b8d440e72dc4bbfa8a02af2755f5027e0a4409c492a7e048ee843cb53a2aab

SHA512
bd7a532ccbaeb7f742dfeb2e121de69ecd4686768891d1b5c43f2a3c09e7b5e73d0b622889882053a7a435c960fbe34889034c636b18b8c49897434b3005c9a8

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

Filesize
86KB

MD5
516ec40d651716d122d8bc42da1bc604

SHA1
59e7111af26a4587da0f78e503728b67491a37a1

SHA256
df739436395583f15639789b85e4a564a9fec4eb6aa5522288f784d80ad17caf

SHA512
0e6cc8f2e6917bf5e7cb0dc2012ddec22335ea0c87fdce87d79c914d7784058e0ace3863128b76fa7e7ed9042378def4afb1407ebdca87eb1f3d5e9bb89050e1

Download Submit
memory/444-0-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/444-14-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3776-10-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download