ad0248e65aabe9dc84b723e6dd350acb9844c3c996c902de54c162621e7d29a3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 05:02

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General

Target

2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe
Size

49KB
MD5

78d2437b6d8463f8ee5b0c5f62c4f865
SHA1

e49aee88cbf3eadec21fc601aab0cd0ad5368b1f
SHA256

ad0248e65aabe9dc84b723e6dd350acb9844c3c996c902de54c162621e7d29a3
SHA512

316e33bd70338d88aadc2ff74d90a19bb2b91cf16c48463a431f77f35f6ea600716d9a744ef037483ba13528904df8a70504c0af6dc6cf9fc1b6d8a559ddea15
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mocr:qmbhXDmjr5MOtEvwDpj5cDtKkQZQK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/448-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b47-13.dat	CryptoLocker_rule2
behavioral2/memory/448-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2952-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/448-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2952-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/448-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000c000000023b47-13.dat	UPX
behavioral2/memory/448-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2952-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2952-27-0x0000000000500000-0x0000000000510000-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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2952	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 448 wrote to memory of 2952	448	2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe	84
PID 448 wrote to memory of 2952	448	2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe	84
PID 448 wrote to memory of 2952	448	2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_78d2437b6d8463f8ee5b0c5f62c4f865_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:448
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2952

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
50KB

MD5
53fb06dcdea2240d43d17edf9dd07a0f

SHA1
6c9314e133af0b09fab187557cc080672fb0fc0e

SHA256
68d01f79012fb7867adba6ae8fe6a2cc14e7d0b4527531184e111ec3901bce70

SHA512
343a037449e9b8c2820d4fcc9cff79c0b043a92cea734463eacb5c4e0c86cf9d6c7cc7280ba28775e4470832860b55d0c08fe6bf124b34b29a64c64cf126bd30

Download Submit
memory/448-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/448-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/448-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/448-9-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/448-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2952-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download