c28e133bfdecd2521483456a7516aaf8285ca67fd10ad247b1286d16c1d8bd1f

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 06:12

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General

Target

2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe
Size

74KB
MD5

90bbbcba0382769e30d9cf4e45f1892e
SHA1

9c1d7e80995df3eb0665489c9a8f97f3dc2bd193
SHA256

c28e133bfdecd2521483456a7516aaf8285ca67fd10ad247b1286d16c1d8bd1f
SHA512

f3999c4a3fe26e42f76ec74ac545795420d33676936d5f410511b7ae845f3c0dcfbf7f1a97f99426572bb154e185fcb2411e55f454ad92d484256a6546779aab
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsC:X6a+SOtEvwDpjBZYvQd25

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_set1

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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3136	asih.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 4860 wrote to memory of 3136	4860	2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe	87
PID 4860 wrote to memory of 3136	4860	2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe	87
PID 4860 wrote to memory of 3136	4860	2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_90bbbcba0382769e30d9cf4e45f1892e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3136

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\asih.exe

Filesize
74KB

MD5
d54caebec6a4f65603be48fb2b869868

SHA1
5e20da30053f862c1b8e20e9e01354e60bf82a5e

SHA256
864a79ccc0d00ef1cdfab1c4a99df296826eaf4f38dc930eced80dd5ebcbaf45

SHA512
58b282cf9435b503d03b18b5afed2c9a111db4523312e5169b79b9a6f3d44704384e4653f19d484cdb20191f4b4bd17f3026c0f5f87407a4e728ff00f1dc7dc0

Download Submit
memory/3136-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3136-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4860-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4860-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4860-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download