af405439668fe654f97b6824aef53a29daa0d1b49db71e508b7c7e81a4f054df

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
17/02/2024, 22:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe
Size

42KB
MD5

c4782c324ef74a671459777163e70659
SHA1

8ab57c90f64541bfa580ca3b887d48d9500b8aec
SHA256

af405439668fe654f97b6824aef53a29daa0d1b49db71e508b7c7e81a4f054df
SHA512

01ff5e2f902ae2c9602e4df3691a08f224cd7ba291b2cce11aaadd48c2b216aec743b42a8f2a7e3d6aa33d2d8eed05dce834f526aa04d15f4b17b5df3f6f1bbf
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwovg:bc/y2lm6Y0AqJ51mwovg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2196	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1708	2024-02-17_c4782c324ef74a671459777163e70659_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
1708	2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe
2196	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2196	1708	2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe	28
PID 1708 wrote to memory of 2196	1708	2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe	28
PID 1708 wrote to memory of 2196	1708	2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe	28
PID 1708 wrote to memory of 2196	1708	2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_c4782c324ef74a671459777163e70659_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1708
- 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:2196

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
43KB

MD5
2b6fb1799d3badb0d5396492d2b2e2f6

SHA1
36514c20f9bd23f0351725a39b28e7b93f0d5268

SHA256
fe11e51f473b175a685aa0286efea00e0e1244ac29c7a9146687f3073352bc24

SHA512
00162c89682bc0b173c8840bf2541ed2f2b6e61a3f71007694a4fb3bc7e8cea11f2caf2331e2571d592446ed7d0ab87395c0ee1b0180100bb8b0288d62ba7164

Download Submit
memory/1708-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1708-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1708-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2196-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download