81fd6ec49c0c600c55a226b07a208b9f74f8eea3e01d22f3d7d529a533af173f

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 02:15

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General

Target

2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe
Size

46KB
MD5

75db0ecc442a808f8e04621ff621551a
SHA1

58587a64e8758ba31eb1cfcf654d2f9a390df2f3
SHA256

81fd6ec49c0c600c55a226b07a208b9f74f8eea3e01d22f3d7d529a533af173f
SHA512

458975d830a79966c086b68c962367b200e317f4aadf2c2341b70124424f459dcbd36e3547ac85beb9de94007956042aa1d85f5c06ecfa8c26aec3df93fecec8
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hQcEx:bgGYcA/53GAA6y37nbQx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120f8-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2536	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2420	2024-02-03_75db0ecc442a808f8e04621ff621551a_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 2420 wrote to memory of 2536	2420	2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe	28
PID 2420 wrote to memory of 2536	2420	2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe	28
PID 2420 wrote to memory of 2536	2420	2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe	28
PID 2420 wrote to memory of 2536	2420	2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_75db0ecc442a808f8e04621ff621551a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

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\hasfj.exe

Filesize
46KB

MD5
b5f4ab434c756855a15cae0151889b04

SHA1
0ac0e6ba18e4c26bc55796751de7a46b5db37d6f

SHA256
5c49697728ca576bc2146daf93520b1427701fa3dfe5e69912bdcd1410e63038

SHA512
472660d297336ed212e3b49f2e0d48ed01b15acd48bd4a831d6cfd50ff4121e90682467e8984efba93a35c252ead18cd9668fb8fb0e268933b75420a6b4092fd

Download Submit
memory/2420-0-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2420-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2420-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2536-15-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2536-17-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download