9c5448b43eac73538c933584150e5c0c64b3baace57a6ee03b12b73e8138ce1f

Analysis

max time kernel
148s
max time network
157s
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, 09:17

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General

Target

be3c0072baf1554386b28b0335088548.exe
Size

10KB
MD5

be3c0072baf1554386b28b0335088548
SHA1

425a8f16dd137439fe58952d116a3bc3aabd6a70
SHA256

9c5448b43eac73538c933584150e5c0c64b3baace57a6ee03b12b73e8138ce1f
SHA512

4796c197b24648c6b7ec0dbc670fc83930d98af3c2906bca736f6cd69a09e60e283414a8914fc5ded3c8d96c69b340fa96df1e8d077dd41f8b8c529861728569
SSDEEP

192:umUi2n7MGwp+Bfc4rDw6HZHBp4XxQspA32akvkSDlFeZjfvi3mcJxzl+RNDq:R27MSk6nWxQse32aDQKTizvJ+RA

Score

8^/10

persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	be3c0072baf1554386b28b0335088548.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\system = "C:\\Windows\\sys.exe"	be3c0072baf1554386b28b0335088548.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	be3c0072baf1554386b28b0335088548.exe

Executes dropped EXE 1 IoCs

pid	Process
1156	sys.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1312-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x0007000000023223-5.dat	upx
behavioral2/memory/1312-8-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/memory/1156-10-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\sys.exe	be3c0072baf1554386b28b0335088548.exe
File opened for modification	C:\Windows\sys.exe	be3c0072baf1554386b28b0335088548.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1312	be3c0072baf1554386b28b0335088548.exe
1312	be3c0072baf1554386b28b0335088548.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 1156	1312	be3c0072baf1554386b28b0335088548.exe	90
PID 1312 wrote to memory of 1156	1312	be3c0072baf1554386b28b0335088548.exe	90
PID 1312 wrote to memory of 1156	1312	be3c0072baf1554386b28b0335088548.exe	90

C:\Users\Admin\AppData\Local\Temp\be3c0072baf1554386b28b0335088548.exe
"C:\Users\Admin\AppData\Local\Temp\be3c0072baf1554386b28b0335088548.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Windows\sys.exe
  "C:\Windows\sys.exe"
  2⤵
  - Executes dropped EXE
  PID:1156

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\sys.exe

Filesize
10KB

MD5
be3c0072baf1554386b28b0335088548

SHA1
425a8f16dd137439fe58952d116a3bc3aabd6a70

SHA256
9c5448b43eac73538c933584150e5c0c64b3baace57a6ee03b12b73e8138ce1f

SHA512
4796c197b24648c6b7ec0dbc670fc83930d98af3c2906bca736f6cd69a09e60e283414a8914fc5ded3c8d96c69b340fa96df1e8d077dd41f8b8c529861728569

Download Submit
memory/1156-10-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1312-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1312-8-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download