c27be64614f36266575f9e16831b044e9d40a419c68198864a83ff1d406cabe6

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 06:02

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General

Target

2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe
Size

64KB
MD5

64365643c5f1d6fc770211b42575b285
SHA1

10061a5812002e2848471b9f58f135b614008b45
SHA256

c27be64614f36266575f9e16831b044e9d40a419c68198864a83ff1d406cabe6
SHA512

1855ea2a41f4694b3991f93b36da27142a49894f8bc02c16e21b9102196d2a34683cf72c40e221c791171721ef045b6158eaf24ab1d39d2bfa63ae3ea80e5ed1
SSDEEP

768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zR:0j+soPSMOtEvwDpjwizbR9XwzR

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1912	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2528-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a00000001202e-11.dat	upx
behavioral1/memory/1912-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2528-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1912-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 1912	2528	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe	29
PID 2528 wrote to memory of 1912	2528	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe	29
PID 2528 wrote to memory of 1912	2528	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe	29
PID 2528 wrote to memory of 1912	2528	2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-03_64365643c5f1d6fc770211b42575b285_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
64KB

MD5
36a11576416943593be130a5d2d2a43c

SHA1
126f4f3e4672902faa96061b12577f6ef44740dd

SHA256
0d9317c9c7736b9f81cf07b758d021680b72c4cd85ff852a85d07b9ce480b191

SHA512
51c0ef6e0e75dc0129e9eedb7930136d7727d229c933380540a953ad031b32ea474c333621ba13806f070cb27b10738aee38e5f879b727c3d986798a25c70eb4

Download Submit
memory/1912-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1912-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1912-26-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1912-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2528-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2528-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2528-9-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2528-1-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2528-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2528-13-0x0000000001F20000-0x0000000001F30000-memory.dmp

Filesize
64KB

Download