c50c5334dc8e8262610c49fc4514b05b2826d84453d2585234a410d94202ce0e

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
22-04-2024 01:43

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General

Target

2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe
Size

43KB
MD5

3a7f60b02047dc19b19fd904768875c7
SHA1

4560115fbe91856aa728d70107170ad13bf2e7d6
SHA256

c50c5334dc8e8262610c49fc4514b05b2826d84453d2585234a410d94202ce0e
SHA512

e6b54a5685524e72d6a16c5b74745316b89753d9e92d13f9a25138b1ef170594b90f5941c0d09266fcdfab9111520cb709a9609bdb481c8568456f4f9fa0832a
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5jP:m5nkFNMOtEvwDpjG8hhXj5j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4784-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_rule2
behavioral2/memory/2352-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4784-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2352-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2352-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4784-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2352-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4784-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e97c-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2352-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4784-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2352-27-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	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 4784 wrote to memory of 2352	4784	2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe	89
PID 4784 wrote to memory of 2352	4784	2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe	89
PID 4784 wrote to memory of 2352	4784	2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_3a7f60b02047dc19b19fd904768875c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2352

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
43KB

MD5
41d31bfcd00a20fcc4f0a086fd6805e1

SHA1
a35e168eea0be0c2ea5fd73e6a3c0351722c907f

SHA256
6a747aa75f1de315786e3247469455390c67fd83fb4f34dc55d373ddcecdf76e

SHA512
43bca980d9e1791b642bbd14023a0f979c05ecfcc55e5012138c3b64ee65d50cea9c11581d443073adc227a3a216c60b0a1dc9e85ffbf9bea64a743404fdb606

Download Submit
memory/2352-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2352-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2352-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2352-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4784-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4784-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4784-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4784-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4784-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download