553486bcf77b152fed3dc65e08fc5f3e32c15997b36aa9edd3b04a207261156a

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
14-05-2024 23:27

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General

Target

2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe
Size

45KB
MD5

8f5fa79534bc61521169d81755a49bb5
SHA1

dfa11ebe336dd345c6b9a3009bb112f77eb26e0c
SHA256

553486bcf77b152fed3dc65e08fc5f3e32c15997b36aa9edd3b04a207261156a
SHA512

f23f10c3c17e3c4a3b869e83e4161041b228f03f99ebe97ee1b1a8b1d5cbe6beced0da452649b646f33aa36ccc51c03c15e0f0eae9a8d01e5aa16191afa74650
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkHo:P6Q0ElP6G+gJQMOtEvwDpjB8WMlso

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122eb-11.dat	CryptoLocker_rule2
behavioral1/memory/2224-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2596-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d0000000122eb-11.dat	CryptoLocker_set1
behavioral1/memory/2224-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2596-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2596	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-05-14_8f5fa79534bc61521169d81755a49bb5_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 2224 wrote to memory of 2596	2224	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	28
PID 2224 wrote to memory of 2596	2224	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	28
PID 2224 wrote to memory of 2596	2224	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	28
PID 2224 wrote to memory of 2596	2224	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2596

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
45KB

MD5
74e2025f14208a8b74b5c747c2a2f72f

SHA1
026e1575673c4eb64fe81a87a6ad59b3d077b242

SHA256
53123325994c06d868bc6d705f7710082acb8ab835893a428fb2ea60e9198fb3

SHA512
c7eee51d15b89fd7f2684c14d037435fba21431cf9930f65df1523f7e5a1f08446c4ac1b31556fabe0efab675962c8d5de6185ec327960785ac2e09090516eb8

Download Submit
memory/2224-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2224-2-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2224-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2224-9-0x0000000077BF0000-0x0000000077D99000-memory.dmp

Filesize
1.7MB

Download
memory/2224-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2596-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2596-24-0x0000000077BF0000-0x0000000077D99000-memory.dmp

Filesize
1.7MB

Download
memory/2596-17-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download