de997cabab2bda1334d129112199ba780d250dd923db4b4035def25755df8200

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 10:56

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General

Target

993dce8e99765166d85c5049951f52c6.exe
Size

86KB
MD5

993dce8e99765166d85c5049951f52c6
SHA1

1ff33f44c6f4179ca4dfceeedc6dbd10259bf325
SHA256

de997cabab2bda1334d129112199ba780d250dd923db4b4035def25755df8200
SHA512

0f1ebf2b075f3b045fd7885eba700ed82fb67055401e500753138083201a1d36bf3ef9c06dff18802fed6c15b2b33167f44b58aa9aae279c3439baaffc976d2a
SSDEEP

1536:kuMyiWMPfQSiy6kWLVvBOQ+ptrblnouy8:5SW+fQSIkQVv8QGJ9out

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2708	SiZhu.exe

Loads dropped DLL 2 IoCs

pid	Process
3068	993dce8e99765166d85c5049951f52c6.exe
3068	993dce8e99765166d85c5049951f52c6.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3068-0-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/files/0x0008000000012284-3.dat	upx
behavioral1/memory/2708-21-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/2708-22-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/3068-23-0x0000000000400000-0x0000000000429000-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:	993dce8e99765166d85c5049951f52c6.exe
File opened (read-only)	\??\H:	993dce8e99765166d85c5049951f52c6.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\SiZhu.exe	993dce8e99765166d85c5049951f52c6.exe
File created	C:\Windows\SysWOW64\SiZhu.exe	993dce8e99765166d85c5049951f52c6.exe
File opened for modification	C:\Windows\SysWOW64\SiZhu.exe	SiZhu.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3068	993dce8e99765166d85c5049951f52c6.exe
2708	SiZhu.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
464	Process not Found
464	Process not Found

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2708	3068	993dce8e99765166d85c5049951f52c6.exe	28
PID 3068 wrote to memory of 2708	3068	993dce8e99765166d85c5049951f52c6.exe	28
PID 3068 wrote to memory of 2708	3068	993dce8e99765166d85c5049951f52c6.exe	28
PID 3068 wrote to memory of 2708	3068	993dce8e99765166d85c5049951f52c6.exe	28
PID 2708 wrote to memory of 2696	2708	SiZhu.exe	29
PID 2708 wrote to memory of 2696	2708	SiZhu.exe	29
PID 2708 wrote to memory of 2696	2708	SiZhu.exe	29
PID 2708 wrote to memory of 2696	2708	SiZhu.exe	29

C:\Users\Admin\AppData\Local\Temp\993dce8e99765166d85c5049951f52c6.exe
"C:\Users\Admin\AppData\Local\Temp\993dce8e99765166d85c5049951f52c6.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3068
- 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:2708
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\~SiGou.bat
    3⤵
    PID:2696

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
\Windows\SysWOW64\SiZhu.exe

Filesize
86KB

MD5
993dce8e99765166d85c5049951f52c6

SHA1
1ff33f44c6f4179ca4dfceeedc6dbd10259bf325

SHA256
de997cabab2bda1334d129112199ba780d250dd923db4b4035def25755df8200

SHA512
0f1ebf2b075f3b045fd7885eba700ed82fb67055401e500753138083201a1d36bf3ef9c06dff18802fed6c15b2b33167f44b58aa9aae279c3439baaffc976d2a

Download Submit
memory/2708-21-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2708-22-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2708-24-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3068-0-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3068-9-0x0000000002AA0000-0x0000000002AC9000-memory.dmp

Filesize
164KB

Download
memory/3068-23-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download