f05f8edaf2fe72a4e166a7642b4cb0174a407cae764e389eb7f35e74cd748b73

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04-06-2024 04:48

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General

Target

2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe
Size

45KB
MD5

86627b3c319ef72005a5b3afc66db786
SHA1

77d7134894b5f0af7ba0c018a7539fa2a8f152af
SHA256

f05f8edaf2fe72a4e166a7642b4cb0174a407cae764e389eb7f35e74cd748b73
SHA512

fae39023e324ad3d3892ce1008fa773b7a4abbba161eb1a8d143159218b61df8b8f697d4d36c5a752897afa7a43a0adbfcd26164f77a3afab1e81679fac5f987
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUadQC8F:bm74zYcgT/EkM0ryfjPdQZF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2212-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023430-13.dat	CryptoLocker_rule2
behavioral2/memory/2212-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2472-25-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2472	2212	2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe	82
PID 2212 wrote to memory of 2472	2212	2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe	82
PID 2212 wrote to memory of 2472	2212	2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_86627b3c319ef72005a5b3afc66db786_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
45KB

MD5
43b27702674a2ad6b1ba61b3ed6bf9f5

SHA1
743ff232acada8d48f7247d0e6c73902abe15cf4

SHA256
6568e02bf011a013c5bb9fa1c27cbfd34c1ae9937870476df74ea43371539c1a

SHA512
a72217a37ba37e7b86f9a5702607c32e5e8882e6c607baa2b59c5739ee8ebe049ea282e7dd5d55db7afb247b8a10a0e0e4805ee11cac07fd47ab1c716195fd87

Download Submit
memory/2212-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2212-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2212-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2212-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2212-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2472-25-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download