2557c8f8b33b36eb4d2bccdfef94b7035ea40a7a0d54187ef4bac3e51e39ebd4

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 03:06

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General

Target

2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe
Size

76KB
MD5

e9c1a7829bb2694bfb00fb9d6e4d1cd2
SHA1

3e70c6b2c46b3f0685000acdbfe92df633de5d07
SHA256

2557c8f8b33b36eb4d2bccdfef94b7035ea40a7a0d54187ef4bac3e51e39ebd4
SHA512

ce74f158e0b4fa3e7a9e38874139d6a10ad20ecf4dc0e302d08838b37384db136e9a99d9c8a16c6d9ba47cab0f5d61d85a7feb9eafdb5b3a0e547b27a7759df1
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLkE:X6a+SOtEvwDpjBZYvQd2T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013417-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013417-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2288	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2192	2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_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 2192 wrote to memory of 2288	2192	2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe	28
PID 2192 wrote to memory of 2288	2192	2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe	28
PID 2192 wrote to memory of 2288	2192	2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe	28
PID 2192 wrote to memory of 2288	2192	2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_e9c1a7829bb2694bfb00fb9d6e4d1cd2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2288

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
76KB

MD5
bb60a430ce530be316b3d15639f42434

SHA1
8f08d8e937d90920e5d1d9cb66fef11236171f55

SHA256
779845c521b7a8999e916b6a2cb44e1b59373fc6a428e6c968616c3836f5ff19

SHA512
8f86c0c8f5478a3af7875ed2590ab4a7fa2ec4a23690f42078d48e901c49fb727b0b3427b4b2dd85b7c66e309c459a3e87abef768ee394fb26bf3f7cc8dcca05

Download Submit
memory/2192-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2192-1-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2192-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2288-15-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2288-22-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download