99441ccf0c32adef155667ee4aedb8205401050227080efb4e3e29a1eb032f09

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:35

Target

2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe
Size

54KB
MD5

4e3cff9b2034e5ef5cf9c26fd154b2a8
SHA1

5dc01509b4798b6408c4a9ccb5a0f9d287af5668
SHA256

99441ccf0c32adef155667ee4aedb8205401050227080efb4e3e29a1eb032f09
SHA512

924d68596098bf8119bc9c22c54ad36a723fdbf5b5e4bc7f3d5f7cb321b0ec54e04a46d567f35861013596c9abc5ce17467f88be4d4ac2c23c64d048d41ebe73
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9Xv+mb6uXsT:bIDOw9a0DwitDZzc16l

Score

9^/10

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\lossy.exe	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

2092 lossy.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe

pid process

2132 2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2092	lossy.exe

pid	process
2132	2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe

description	pid	process	target process
PID 2132 wrote to memory of 2092	2132	2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe	lossy.exe
PID 2132 wrote to memory of 2092	2132	2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe	lossy.exe
PID 2132 wrote to memory of 2092	2132	2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe	lossy.exe
PID 2132 wrote to memory of 2092	2132	2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_4e3cff9b2034e5ef5cf9c26fd154b2a8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2092

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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

Filesize
55KB

MD5
e4f36d066989c5e79c64d48f8a84186c

SHA1
ae4cde8b878a6da60a6347872922d75e73d0f0ec

SHA256
657359bad77bd07308fb4459d3d413b8f63c8742221718f76eab3f2a24280248

SHA512
8974f2558dca264c5ef1bcec8db13dca028b42dc08e3a647304ea0844008868e895f4b109507c2eb06610a1f71971fdd2f309a3a7b3e4b2fea77ac7b0620ff3e

Download Submit
memory/2092-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2092-22-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2132-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2132-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2132-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download