1627961f04b9449c0f8e4d05153e708f7d8d54ffca0b441c534fb982e5e6f129

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 04:42

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General

Target

2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe
Size

35KB
MD5

5b740db7e061aa8d9dd70f66355d40cc
SHA1

8ed49cac8d4aa9a1ae54811e20e4680f95b28d22
SHA256

1627961f04b9449c0f8e4d05153e708f7d8d54ffca0b441c534fb982e5e6f129
SHA512

9b114277a64c472f0828260c9f6c4cff5d70c12174af8de6ede270d52ae07449657604a2bddedb7c48f6c123123e1531b9fdb69b8bb6cbd57b5225e5a62a2dcc
SSDEEP

768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4JzX:fT+hsMQMOtEvwDpjoIHJzX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4336	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 4908 wrote to memory of 4336	4908	2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe	88
PID 4908 wrote to memory of 4336	4908	2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe	88
PID 4908 wrote to memory of 4336	4908	2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_5b740db7e061aa8d9dd70f66355d40cc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4336

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
35KB

MD5
74e65ca253612092016c07ee79963d29

SHA1
a6456cdb4d2924d3bb52d5bbf08ddd42d192413e

SHA256
3b6cd9028d556c5b36a5d2d5e56fbf40dec02ea2a9a8b7c79ea2267656242925

SHA512
3e25a3bf3ddcb31bdd0cb220e03b172e1df0d69c0f5ac2bd65fe64a6cb381f7830bae2ab0eaccb652ae910c4ae80c2ba1415cc6704e9120b9b20d5116415b44e

Download Submit
memory/4336-19-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4336-17-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4908-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4908-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4908-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download