01c5a555c72a60eca9d5a9e9f4e70c155850b8a070e644bb03287e2eb4247527

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 07:59

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General

Target

2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe
Size

59KB
MD5

f646033e48e8e830b55e8183f5d51208
SHA1

a643679e78dd1a444f256210a203f4d3e8b71719
SHA256

01c5a555c72a60eca9d5a9e9f4e70c155850b8a070e644bb03287e2eb4247527
SHA512

7924e7b333333cb74f54c6f368e1df3f0765e55e8cd6288c6d6df767abdf1aa0248ca4f6505ea2c8dc7f1344e5b9c228732248bd4eed27b7ff4d46584dbbfffa
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMd3:TCjsIOtEvwDpj5HE/OUHnSM2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3252-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002321d-13.dat	CryptoLocker_rule2
behavioral2/memory/3252-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4224-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3252-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002321d-13.dat	CryptoLocker_set1
behavioral2/memory/3252-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4224-26-0x0000000000500000-0x000000000050E000-memory.dmp	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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4224	misid.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 3252 wrote to memory of 4224	3252	2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe	84
PID 3252 wrote to memory of 4224	3252	2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe	84
PID 3252 wrote to memory of 4224	3252	2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4224

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\misid.exe

Filesize
59KB

MD5
a25052a3f36655b0e7c3b1ca7af87476

SHA1
5a24661937f13aff112dccb8588c4167c72e3fb1

SHA256
1a5f7ed6780954d7591c08ea9862ea3b7db6c4ae22428581be59175d3fde2f44

SHA512
57e4bfc51bb57920dfd0d515edc75a2418d40d9ee510e2c154a8662a0abdf6ab447897d6ec9b85488a1d3906681eb95972ef2c536bdd0b0c71e1dd202072d582

Download Submit
memory/3252-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3252-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3252-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3252-3-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3252-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4224-19-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/4224-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4224-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download