9733930f16d008edb0c16e6e560cf36bf859a474fad1c400676c15a2411506db

Analysis

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

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20/06/2024, 03:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe
Size

52KB
MD5

e4f7804b14d7a6d6b10a2136576bfa60
SHA1

6beea6fc543adbc7c51a5cd7e62d151da6cd5a83
SHA256

9733930f16d008edb0c16e6e560cf36bf859a474fad1c400676c15a2411506db
SHA512

28d255f5bb19611022ab8e61a65e0dd7e7290d23a99e656dfb7520417c587b53a0060d731876afbcbe2038118661fe7ca83b1bce1f309505e400ffa027ee5f23
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOfO:bODOw9acifAoc+vJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1736-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0010000000012272-11.dat	CryptoLocker_rule2
behavioral1/memory/1736-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-25-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1736-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x0010000000012272-11.dat	UPX
behavioral1/memory/1736-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2956-25-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2956	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1736-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x0010000000012272-11.dat	upx
behavioral1/memory/1736-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2956-25-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 1736 wrote to memory of 2956	1736	2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe	28
PID 1736 wrote to memory of 2956	1736	2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe	28
PID 1736 wrote to memory of 2956	1736	2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe	28
PID 1736 wrote to memory of 2956	1736	2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_e4f7804b14d7a6d6b10a2136576bfa60_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2956

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\lossy.exe

Filesize
52KB

MD5
4229500cbef3cab3c543fc7de18e587a

SHA1
5c3f2afa6287308ffe5d79ccfceb544f334654d2

SHA256
18022a312481b871c7104755ebd3076623e2c3764ec57b59cd3e1da59e7fb607

SHA512
66519febcbf7d9fadb457f29022e0a1849f39f2c519c72f96e5cb037b5a2b3ce39c8f3bef00f5a79235f416f908ded82276b7edc4b283ca34dcfe7c93f027ad7

Download Submit
memory/1736-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1736-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1736-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1736-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1736-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2956-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2956-24-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2956-17-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download