647fccff612f22cfde6ff1956ab57d04e2a168edf4f80519c5f8b150ab96e1a9

Analysis

max time kernel
148s
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
03/02/2024, 14:25

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General

Target

2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe
Size

69KB
MD5

6152f2cf48f9b0d364017584d9fd7f57
SHA1

5d72047027599ab07d1913142ab3004a8ebee446
SHA256

647fccff612f22cfde6ff1956ab57d04e2a168edf4f80519c5f8b150ab96e1a9
SHA512

72adf60f489e56440782de7116446676a3e333dc93fbee387ad8460c695c8c864d8b26ab84346d4a108fb8bc365be4354b67d2c7d4586b69b7b00e39da312a91
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOuE:DW60sllyWOtEvwDpjwF85y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4444-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023164-13.dat	CryptoLocker_rule2
behavioral2/memory/4444-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4088-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4444-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023164-13.dat	CryptoLocker_set1
behavioral2/memory/4444-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4088-18-0x0000000000500000-0x000000000050B000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4088	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 4444 wrote to memory of 4088	4444	2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe	85
PID 4444 wrote to memory of 4088	4444	2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe	85
PID 4444 wrote to memory of 4088	4444	2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_6152f2cf48f9b0d364017584d9fd7f57_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4088

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
69KB

MD5
8a0a42a8c6b895720ad9258676a90404

SHA1
51975716a67ad2e9732cec938c076a731a38c3c3

SHA256
95ff530c5b03bd4714d9ad561a508ee1516b96d4d6ee9a9c4fb9fa2bb1df21c9

SHA512
83db14446f245dc5b5c32207747ff617ec3bfc57872f353a390fd0ef2b28ec4e7dfc1f8306d74e5d59d930f1e9906a396fb782f4a8ab980bf44cb1346dce38ab

Download Submit
memory/4088-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4088-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4088-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4444-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4444-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4444-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4444-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4444-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download