666a4094150daab3097d4e19f636031f407205de2af4e23eb0b4d06e4aec8119

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 07:43

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General

Target

2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe
Size

42KB
MD5

896135e0f510fbc44c34b347d14a2fb3
SHA1

d2c0ba14c04b280000108c96471ec31c305470d2
SHA256

666a4094150daab3097d4e19f636031f407205de2af4e23eb0b4d06e4aec8119
SHA512

39935ccf3e40de229e050384c8e27bf98d3dc4dde37d49ff000cf3840e705f4b2a63d9ae57af0212cd4826d82bb23a45a483d3a99bd73b64cfb7644171f49ab6
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vF1A:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000013a3f-11.dat	CryptoLocker_rule2
behavioral1/memory/3036-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2996-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000013a3f-11.dat	CryptoLocker_set1
behavioral1/memory/3036-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2996-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2996	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3036	2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe

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 3036 wrote to memory of 2996	3036	2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe	28
PID 3036 wrote to memory of 2996	3036	2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe	28
PID 3036 wrote to memory of 2996	3036	2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe	28
PID 3036 wrote to memory of 2996	3036	2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_896135e0f510fbc44c34b347d14a2fb3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2996

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
42KB

MD5
8e0d6e4abc9c18e0521014898effb6d3

SHA1
81f1340b9c9dfb28a50c71f52e29725fd30d52bd

SHA256
433fd02cd28af50fc229a98cf6dc9f1413f554655263300c1ad1a59dfcba03a6

SHA512
6371cb43f1024381f9956e3516e441e13626cdca332acb8ef98799f4a141af041fb9a2ca806f4c765e33ed02a71682ad44f8d40626aba127af1aa5b4246d3ae3

Download Submit
memory/2996-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2996-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2996-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3036-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3036-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3036-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3036-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3036-14-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download