4cd7c47902345f29cd2a838eec9e7d4d9fa65d25a59ffd137b84c07983d261b7

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 21:36

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General

Target

2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe
Size

61KB
MD5

95348e3b5ebf247a79da5b3efcba3882
SHA1

552b666cef6ba4eccbe7dfd976d1d982eb00cd28
SHA256

4cd7c47902345f29cd2a838eec9e7d4d9fa65d25a59ffd137b84c07983d261b7
SHA512

da5734f8e4eb98184a803cffab64de054099a545964e8ab5d3a4f9dd56ecfafea3f962efaaf06eda01b6fea068979b9fba2617194310300b866595277cad7be9
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIN:TCjsIOtEvwDpj5HE/OUHnSMT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4584-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/4584-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2552-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4584-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_set1
behavioral2/memory/4584-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2552-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2552	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 4584 wrote to memory of 2552	4584	2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe	88
PID 4584 wrote to memory of 2552	4584	2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe	88
PID 4584 wrote to memory of 2552	4584	2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_95348e3b5ebf247a79da5b3efcba3882_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2552

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

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Downloads

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

Filesize
61KB

MD5
d4f9adc1e96f10eb505228c38f4b17ce

SHA1
83376164029fd54a812e9998f654a0a525923bc5

SHA256
b870fa57e5c44e71c267d02328727201a5eb268a8d9c6d0475f99540ff315d0e

SHA512
6b577941455830c19ef94d3b88580bf0a2dea900726407804a2ad1942b5262e3a2f4fc5c0bea563e667e443d51c4c042082ce5d0c1d5215766283de8c9086af9

Download Submit
memory/2552-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2552-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2552-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4584-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4584-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4584-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4584-3-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4584-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download