50b68f5c72271ad292c692926013de6eae62990a52a973e3fb7e7f1215fda50c

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
21/02/2024, 03:23

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General

Target

2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe
Size

31KB
MD5

478fd09ccf9b12a4320066a2ac99cad2
SHA1

2e5c88a161f3b88ae6ac2c41445991d82c04b09f
SHA256

50b68f5c72271ad292c692926013de6eae62990a52a973e3fb7e7f1215fda50c
SHA512

607a6bad1443fdc29f9087d754f4810957014ac82e132ae229103211dedd717d0b2ac1aac3f9bb19cf4cf13e0bf74827ce856a51860ce14bf453013508e90b0e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/Be:b7o/2n1TCraU6GD1a4Xt9M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2728	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe
2728	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 2728	1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe	28
PID 1232 wrote to memory of 2728	1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe	28
PID 1232 wrote to memory of 2728	1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe	28
PID 1232 wrote to memory of 2728	1232	2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_478fd09ccf9b12a4320066a2ac99cad2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2728

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\rewok.exe

Filesize
31KB

MD5
a97ddd4f1edee9f012ed06eb279f6aeb

SHA1
f5f682a129172ab13ba1b204c208d187a0620854

SHA256
edbb8c09a090980472bfe4bdd7341e3e55b576dc56abd41eff270c8a00e541a3

SHA512
3e315d10930912909d473523e6cca79ed1593ce126a1e69862c90011c657288a7c8859a5d80a6c2a88241ef52e76ef8eeba547fba11a56ff427b978228294ce4

Download Submit
memory/1232-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1232-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1232-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2728-16-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download