a22b454f1c644cf932b3406c4b9fa3309956a58df0f6725f2ddce55d4af1cb60

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
16/05/2024, 06:45

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General

Target

2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe
Size

91KB
MD5

48dfd8d9e2c257ed8b16727301d0f8a4
SHA1

6959bac982bb169aae105096cf99ab45e0fc6e8b
SHA256

a22b454f1c644cf932b3406c4b9fa3309956a58df0f6725f2ddce55d4af1cb60
SHA512

6dcc6d929d5c3220eb163605fa785d7f6c32a9ded9ac497c6637c81feda4c284de87fbbcd7a071260b3dfd8363ba329ec78f7359d872a1769b6b7ddadc77cf7c
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgddjE:AnBdOOtEvwDpj6zs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2748-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013113-11.dat	CryptoLocker_rule2
behavioral1/memory/2156-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2748-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2156-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2748-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013113-11.dat	CryptoLocker_set1
behavioral1/memory/2156-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2748-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2156-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2748-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c000000013113-11.dat	UPX
behavioral1/memory/2156-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2748-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2156-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2156	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2748	2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2748-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c000000013113-11.dat	upx
behavioral1/memory/2156-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2748-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2156-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 2156	2748	2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe	28
PID 2748 wrote to memory of 2156	2748	2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe	28
PID 2748 wrote to memory of 2156	2748	2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe	28
PID 2748 wrote to memory of 2156	2748	2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_48dfd8d9e2c257ed8b16727301d0f8a4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
91KB

MD5
11b1f5a320aa7c20b4d98e97bc9ee954

SHA1
e6e1420d8065ae66ef22b96a0fc9b208e57a443d

SHA256
1494f24e33ce8069007c9fe02d212be14723cfdba17e28004dc3ef2cb1c7dc0c

SHA512
5893503001ac5790b45a7fe616106db32bb730da8228b69ab81d0d2009c200261ba3562a1bff9d76e92e06e0fd4b3479047918314cf2ccacd06ae980d6f85184

Download Submit
memory/2156-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2156-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2156-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2156-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2748-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2748-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2748-9-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2748-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2748-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download