d63ae84bea591dbfa9384b0386a2891c20e2658532ca68df593b65b9074cf1db

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 12:50

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General

Target

2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe
Size

42KB
MD5

97fc40e3d7dc2c4d48f8613235ce97f6
SHA1

290128675b847b6189fac98025168fa1c483583c
SHA256

d63ae84bea591dbfa9384b0386a2891c20e2658532ca68df593b65b9074cf1db
SHA512

28f16ff84959751afa81d21a12dd0ba9190de57b72be019aac1b83eae725565e6b221391c146ad26c5693901cbd028ee98a65a04d05869ac180110a723ba2ff8
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtN:bCDOw9aMDooc+vAqtN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2172-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000015cb1-11.dat	CryptoLocker_rule2
behavioral1/memory/2172-13-0x0000000002AB0000-0x0000000002ABA000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2172-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2544	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_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 2172 wrote to memory of 2544	2172	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	28
PID 2172 wrote to memory of 2544	2172	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	28
PID 2172 wrote to memory of 2544	2172	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	28
PID 2172 wrote to memory of 2544	2172	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2544

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
42KB

MD5
517fc3d717436321f295ae22f084bec5

SHA1
b03a3400912265744f11dcf3d78cbfb6d83b2ed6

SHA256
a434b508b236c00a8997ba45d4eca8c9cd737f3a7ae556cae08695c9774cd597

SHA512
e30dde3f8b3218ef5ad3471f8ea95aafdb0dfa14fccc0db09c30699ec2ec079a66f26d51821a503aa034af9ad040eefcf782ac7223bcf12db56f8e4b9ffc8be3

Download Submit
memory/2172-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2172-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2172-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2172-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2172-13-0x0000000002AB0000-0x0000000002ABA000-memory.dmp

Filesize
40KB

Download
memory/2172-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2544-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2544-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2544-19-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2544-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download