d48e31231d9e7ee3a550d75adf1bdf269d0ced264257eb24763e81e03152830e

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 12:22

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

1df93430334bd284901333c3648dad5e.exe
Size

12KB
MD5

1df93430334bd284901333c3648dad5e
SHA1

c646971e98f4e03c813c04b942775779f2a684df
SHA256

d48e31231d9e7ee3a550d75adf1bdf269d0ced264257eb24763e81e03152830e
SHA512

053cb39a4d336c2eaf03b261418febe53fb28e39689e67e5ac1b270e643f558bc7c03c49bece8cecff6489bdb216c81d3bc97132e130ebca60f5baf2d233ed47
SSDEEP

192:DfOOYr1WLSfqt8WKYRLlSnjF18BSwOAc1PNp9xRURIfN2OfWQKMpf52UJDbJt4H:DmTRWq6TJL+FMwN1VLYI7eHMd5/hJI

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3020	winsys.exe

Loads dropped DLL 2 IoCs

pid	Process
2924	1df93430334bd284901333c3648dad5e.exe
2924	1df93430334bd284901333c3648dad5e.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0009000000015c46-4.dat	upx
behavioral1/memory/3020-14-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x0009000000015c46-13.dat	upx
behavioral1/files/0x0009000000015c46-11.dat	upx
behavioral1/memory/2924-5-0x0000000000350000-0x000000000035F000-memory.dmp	upx
behavioral1/memory/2924-2-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\ssate.exe = "C:\\Windows\\system32\\winsys.exe"	1df93430334bd284901333c3648dad5e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\ssate.exe = "C:\\Windows\\system32\\winsys.exe"	winsys.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winsys.exe	1df93430334bd284901333c3648dad5e.exe
File opened for modification	C:\Windows\SysWOW64\winsys.exe	winsys.exe
File created	C:\Windows\SysWOW64\winsys.exe	winsys.exe
File opened for modification	C:\Windows\SysWOW64\winsys.exe	1df93430334bd284901333c3648dad5e.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 3020	2924	1df93430334bd284901333c3648dad5e.exe	16
PID 2924 wrote to memory of 3020	2924	1df93430334bd284901333c3648dad5e.exe	16
PID 2924 wrote to memory of 3020	2924	1df93430334bd284901333c3648dad5e.exe	16
PID 2924 wrote to memory of 3020	2924	1df93430334bd284901333c3648dad5e.exe	16

C:\Users\Admin\AppData\Local\Temp\1df93430334bd284901333c3648dad5e.exe
"C:\Users\Admin\AppData\Local\Temp\1df93430334bd284901333c3648dad5e.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\winsys.exe
  "C:\Windows\system32\winsys.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  PID:3020

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\winsys.exe

Filesize
1KB

MD5
fe2fcdb817bac194d42017f511def4da

SHA1
492ac05dee6dc3157c838b5420e65a7252298d95

SHA256
9911580cf8d9f547c0cfdf22106505d4d1f7c8b4149fb38ba20d734bfe798545

SHA512
98945fa123d3d0dd6287eaf22cce34e62f4dd5709d2c49c0d840d04e618f1e60b6d232a48dda3d5bdbceaeb8bef1ece9e8351e395878f33d4b5be9e23cf9a73d

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

Filesize
3KB

MD5
6a1a7d60b6fa875956436b1798f1ea2f

SHA1
e97882391b4e5d17e3e838ed3f4733a085203e0c

SHA256
b80415dd0813c1b8109fd36c89b781fc88afd86728f2a596b05d47eb382218b7

SHA512
00b0f51874d06c76196ab51eceaaca463bc2717e1666db66ce6e02c7fcd586f2da156d69b2a219d546145e2f28eedf04c5c4b95f929c085d82ca62ac4245acc9

Download Submit
\Windows\SysWOW64\winsys.exe

Filesize
12KB

MD5
1df93430334bd284901333c3648dad5e

SHA1
c646971e98f4e03c813c04b942775779f2a684df

SHA256
d48e31231d9e7ee3a550d75adf1bdf269d0ced264257eb24763e81e03152830e

SHA512
053cb39a4d336c2eaf03b261418febe53fb28e39689e67e5ac1b270e643f558bc7c03c49bece8cecff6489bdb216c81d3bc97132e130ebca60f5baf2d233ed47

Download Submit
memory/2924-5-0x0000000000350000-0x000000000035F000-memory.dmp

Filesize
60KB

Download
memory/2924-2-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3020-14-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads