47c8579564f3eb5abb382fba00de3f00fb93166996f4d6aa1059c33a9bb8afbf

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 06:26

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General

Target

2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe
Size

44KB
MD5

263405bc1dcb214ac54e07252998228c
SHA1

7974c14bf9d179a46d58640dee51868d28899aac
SHA256

47c8579564f3eb5abb382fba00de3f00fb93166996f4d6aa1059c33a9bb8afbf
SHA512

793ee84dbd053c0602ae1bfe04b35456cdb31c83502152dc1a2f2f3f88be1ff1c664db768606b00a9ce005d9af7efabf864e4d84e7fa1358b808f0c073ef3ece
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwl:79mqyNhQMOtEvwDpjBzck1W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2732-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/2732-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2600-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2732-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/2732-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2600-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	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 2732 wrote to memory of 2600	2732	2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe	89
PID 2732 wrote to memory of 2600	2732	2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe	89
PID 2732 wrote to memory of 2600	2732	2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_263405bc1dcb214ac54e07252998228c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2600

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
44KB

MD5
ce09a675ae4215e66fb9f8061123b717

SHA1
e6a7953d8d106cb7a0938678a50723696d5c8c82

SHA256
00363a7c56b9004bab12d6727a100b84ccd0a4e681074957f01cbd93d5b87076

SHA512
19af77844a55b8b683f6e04b28ae468f6042c24e03e4c56f4bf1e99388f94b298e64456122893878803d9c22f333b493388bd2ec3ad9df5a0d6c16ffa0369f16

Download Submit
memory/2600-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2600-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2732-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2732-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2732-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2732-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2732-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download