de843f6c7adebe8ccd59acda7dd196b133172bc2e922014d918650cfb1a81f61

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/04/2024, 01:30

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General

Target

2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe
Size

41KB
MD5

9683b4427c01bf9676d7ec2b6d902960
SHA1

00c24050ed8fa8f13030e8f1a3b224a7dffee87c
SHA256

de843f6c7adebe8ccd59acda7dd196b133172bc2e922014d918650cfb1a81f61
SHA512

c29badb06f42dca2b19d420e0f735fe5eb80b221c3bb5f0fb2a15f12269576d0b453cd3d8f03f98f11a72ad45919bb263296cc741f0a6ae64437ad15f0b5758a
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtA2:bCDOw9aMDooc+vA2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2992-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012255-11.dat	CryptoLocker_rule2
behavioral1/memory/1672-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1672-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1672	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-04-24_9683b4427c01bf9676d7ec2b6d902960_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 2992 wrote to memory of 1672	2992	2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe	28
PID 2992 wrote to memory of 1672	2992	2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe	28
PID 2992 wrote to memory of 1672	2992	2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe	28
PID 2992 wrote to memory of 1672	2992	2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_9683b4427c01bf9676d7ec2b6d902960_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1672

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
41KB

MD5
4c8a92f86034d5a893674254d29a99fa

SHA1
6650437e1f2e162f0fabc4c7cc41d3a8938e52e1

SHA256
ff331aa05e4ae696381607d8f90cd11f1ff8d4a73b899916c291fa49e774a33d

SHA512
5a720c4e2ac52dfc135531e05204f55b17495ae9e1c2ffc4dbd2a1168d7102f123545d6852e9ea7e269fb446e98ceb3eb9e647fee4aaf85fe23be8d50b665b24

Download Submit
memory/1672-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1672-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/1672-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1672-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2992-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2992-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2992-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2992-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2992-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download