043d5e9a2f7d6392e37ca3604257767eca6f47fca6a1f7d21a74a684e1bea05c

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 07:34

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General

Target

2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe
Size

69KB
MD5

48b7f7a8907777bdf3915566784ec419
SHA1

a807b71523350ea0ac22c169d16134c8d11d05b0
SHA256

043d5e9a2f7d6392e37ca3604257767eca6f47fca6a1f7d21a74a684e1bea05c
SHA512

c532feec696bf30eb0138113bdbeb8df0358e0abc60874afbaa6d8a53c8e749d39bd37bcc93891eeba89a2e008f6ccbeb24200e1f3c175ceee4edbf53cdf5e84
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50U:DW60sllyWOtEvwDpjwF85/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/112-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_set1
behavioral2/memory/112-17-0x0000000000500000-0x000000000050B000-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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3704	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 112 wrote to memory of 3704	112	2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe	86
PID 112 wrote to memory of 3704	112	2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe	86
PID 112 wrote to memory of 3704	112	2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_48b7f7a8907777bdf3915566784ec419_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3704

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
d15e78f43cb404dd6fff1b709105a335

SHA1
6f5da27439f37f699e60bd2df1d5cea9a806c6df

SHA256
0ac577da1f9ff8857bbfac8e8f84bd35f8eb5c24cdaa4ceedd299c30941c4831

SHA512
500e48cfa5d98d97121e9e21577dfca9b8519839259479e7012d386b8f5c81696959957343983005b23e1d93a7c2a46157b2ddad6dfd54ef12af4164bad17150

Download Submit
memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/112-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/112-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/112-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/112-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3704-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3704-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download