6398e4b881e29380759bf40f713ef518a55d5298e3838306fada608c65fa88ed

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 12:31

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General

Target

2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe
Size

63KB
MD5

414dc6d9150fa8f836771a73c18173e5
SHA1

0cea09973072f0b2dbef78463d90443628052ecb
SHA256

6398e4b881e29380759bf40f713ef518a55d5298e3838306fada608c65fa88ed
SHA512

eb79513994622c1aa0be7de00b6592a9c1d24d8314cb4269083e7ba95347b6610d9ba7ab1b1c450dd09bb7b061734a45208ec65512b63399d809c21d4bdbddf2
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsG:BbdDmjr+OtEvwDpjM8u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3464-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023170-13.dat	CryptoLocker_rule2
behavioral2/memory/3464-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5028-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3464-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5028-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3464-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000c000000023170-13.dat	UPX
behavioral2/memory/3464-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5028-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5028	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 3464 wrote to memory of 5028	3464	2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe	85
PID 3464 wrote to memory of 5028	3464	2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe	85
PID 3464 wrote to memory of 5028	3464	2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_414dc6d9150fa8f836771a73c18173e5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5028

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
63KB

MD5
bfcd3d63eef5cf1f457be5a8e51a385f

SHA1
59f81a9740b6ee66213713201eae3a6820bca51a

SHA256
79434c689df3b316765c2f6167f128bac13c2484729e6c8a1aa188d0c7e7190e

SHA512
cf1808045fee8c4cfa3272da367e9263e32a221f7463f3fd23a2e039fe07b723751f929f1f8b3635721e92f147c735d59c7a7af650f2d665336a317ec9dcc060

Download Submit
memory/3464-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3464-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3464-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3464-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3464-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5028-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/5028-25-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/5028-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download