815bc31dd18fab84b3e899bcbb14b486a2077bd301aceba000cecb14c4258a24

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20-02-2024 07:35

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General

Target

2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe
Size

37KB
MD5

9edc7374b9e3a7772027ebd66448d8b8
SHA1

09ced0886f4d4cad274ddecb2a5a67e37f4afbef
SHA256

815bc31dd18fab84b3e899bcbb14b486a2077bd301aceba000cecb14c4258a24
SHA512

eb8f9bd6dba5a2514f103b56a3de28cb6046c989f5ac860e45653724ded368f2d818b747b109c5417d12797cbe4d30d8904578d3c4b00397fd4ccd5c298880bd
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLpzW4:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1724-13-0x0000000002700000-0x000000000270B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001225b-11.dat	CryptoLocker_rule2
behavioral1/memory/1724-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1724-13-0x0000000002700000-0x000000000270B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001225b-11.dat	CryptoLocker_set1
behavioral1/memory/1724-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2688	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_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 1724 wrote to memory of 2688	1724	2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe	28
PID 1724 wrote to memory of 2688	1724	2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe	28
PID 1724 wrote to memory of 2688	1724	2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe	28
PID 1724 wrote to memory of 2688	1724	2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_9edc7374b9e3a7772027ebd66448d8b8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2688

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
37KB

MD5
4eeeddbe1c459fe97fc63355cac04850

SHA1
bde3757d50ab44609758fcbc16c8191448c4ef05

SHA256
aa328afef311b3ea0f136f7e997dd41be0aa63ece60e7a54361fab8d9718d922

SHA512
4f0f3fbe8749f50ddbe50f0c0f1aec012e763ead35df19bf13ff7937fcff23800037855c24da809235aab024cde514da110435e4339d5fe14ffe33081297ee16

Download Submit
memory/1724-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1724-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1724-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1724-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1724-13-0x0000000002700000-0x000000000270B000-memory.dmp

Filesize
44KB

Download
memory/1724-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2688-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2688-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2688-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download