f0b0b72b7127a8b92cffefb8bee6b2e0fc574ff4265eb18822f4b744659a1136

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/03/2024, 16:46

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General

Target

2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe
Size

40KB
MD5

53ab237d2ab022b009cc768702ee4c74
SHA1

ee1c07c93f54c864ca108459e6d950b1b704f4df
SHA256

f0b0b72b7127a8b92cffefb8bee6b2e0fc574ff4265eb18822f4b744659a1136
SHA512

e596394fb3d7a07b4f0c91160d9f6bcf76b27fd89327909959ae838ab5f2a5d657bc732c767d06197290e6ef343a9445b788e4c018185a4a6b31d2ca0f90dbf1
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAId:bCDOw9aMDooc+vAw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2372-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001220d-11.dat	CryptoLocker_rule2
behavioral1/memory/2372-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1736-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1736-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1736	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2372	2024-03-29_53ab237d2ab022b009cc768702ee4c74_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 2372 wrote to memory of 1736	2372	2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe	28
PID 2372 wrote to memory of 1736	2372	2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe	28
PID 2372 wrote to memory of 1736	2372	2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe	28
PID 2372 wrote to memory of 1736	2372	2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_53ab237d2ab022b009cc768702ee4c74_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1736

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\lossy.exe

Filesize
40KB

MD5
b9af81c9e4bf8f7b5c9bc8d046aa8f75

SHA1
cd0f0426c1e77202ee13bfdcfa12e2485007883d

SHA256
6a5c55be1e98712c8d8937da61f333560ff5b3e481b05baf686479c94b932800

SHA512
9bdfb1099da33488e0103a7572a0ceb0662314a0f49b08433e8fd2d9f4f9747a8243511eb24b1efc9636d3cfcde7f80a317ebe7f813f67c8cc06e115ca50deb2

Download Submit
memory/1736-18-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1736-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1736-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1736-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2372-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2372-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2372-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2372-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2372-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download