2792165d4775f9fc083aba6750479eadefce959156566072a07cac0a4fdef283

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
08/06/2024, 16:53

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General

Target

2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe
Size

44KB
MD5

26f2756e7dec93751911b2523fc1ed13
SHA1

76ed2e05bbf1e3864cce1714e1e744188b26e3b1
SHA256

2792165d4775f9fc083aba6750479eadefce959156566072a07cac0a4fdef283
SHA512

e5731e15032e6c95e2ed7699a1d92075649e541e19e94b835becd438c9f81644b717854f7ac3940391b8d34704b16acab3f2641f106f3164dfc60b159d072eb8
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAyda:bCDOw9aMDooc+vAyM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1368-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f00000001226b-11.dat	CryptoLocker_rule2
behavioral1/memory/1368-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1984-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1984-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1984	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1368	2024-06-08_26f2756e7dec93751911b2523fc1ed13_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 1368 wrote to memory of 1984	1368	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	28
PID 1368 wrote to memory of 1984	1368	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	28
PID 1368 wrote to memory of 1984	1368	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	28
PID 1368 wrote to memory of 1984	1368	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1984

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
44KB

MD5
ceb40339942f25228bcb132dd286e2e4

SHA1
284cd23d70b2e621d3a0ae37c1d739e7077cfe0f

SHA256
5175b1b9b09909cd66f4e0f616a85cd2dbe7be5617f5ba9ebd4992864e83f6a9

SHA512
1814ddc6020aa4d36b1326b14e624d2a734fc18430b105337163663f514bf1034e950537dd915525600c3cac3a58e71719ad1ed55a7590c97018250b85820e19

Download Submit
memory/1368-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1368-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1368-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1368-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1368-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1984-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1984-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1984-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1984-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download