7eea022fcf69e48a11f87e2f5d1cf7deea954044e439a03a55922eee01064407

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 13:33

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General

Target

2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe
Size

47KB
MD5

21033cfbf156088c667203db6fcd436e
SHA1

1e1ac065a2490e5e239dd51f95d38e450318b74f
SHA256

7eea022fcf69e48a11f87e2f5d1cf7deea954044e439a03a55922eee01064407
SHA512

bdcbee85de9f960d645d2ad609a0b9a8fff3a315352e6b8e8aad7837e220b30763cb270e26343aab00368c629ba986cb21a35155f6fb576dcf099a08ddc7c122
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoPG:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4536-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000230fa-13.dat	CryptoLocker_rule2
behavioral2/memory/4536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/944-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/944-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4536-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000230fa-13.dat	UPX
behavioral2/memory/4536-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/944-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
944	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 4536 wrote to memory of 944	4536	2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe	85
PID 4536 wrote to memory of 944	4536	2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe	85
PID 4536 wrote to memory of 944	4536	2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_21033cfbf156088c667203db6fcd436e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:944

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
47KB

MD5
463cd2dde3e51391fee6716127c90d36

SHA1
9b5d0004dcc28da6b684384b55d18bf5da651d53

SHA256
744bb282f7269ea90281a247752be0896cf2565bef4cad4868f2434cadea635e

SHA512
8830a291019c3f0418c7285a105ddd91ed4f3810757a6119031a80a8cafe8f50706580efa1f8445b748c217839dac04c3a5fb584a6473284ebd7d06e33d5a41c

Download Submit
memory/944-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/944-21-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/944-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4536-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4536-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4536-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4536-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4536-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download