bf4d9d8a5d02aa4ec825f4c57713e78f712e326d73b9fa015ea8e3d9e8c85308

Analysis

max time kernel
151s
max time network
147s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 04:26

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General

Target

2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe
Size

82KB
MD5

1ff338558783d9480630ab9324454ed7
SHA1

2cb505ca39be94ad847e99349add67cdb5bb9f79
SHA256

bf4d9d8a5d02aa4ec825f4c57713e78f712e326d73b9fa015ea8e3d9e8c85308
SHA512

7fcce1291eeca55ba11541cd22f23ac76001b1c9930286c7b42618c3ad7a14eb68742884781992cff66ac396e5da7af059394ecbc324c33c49aa7f5437bcb321
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrMO:TCjsIOtEvwDpj5HE/OUHnSMT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1880-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001225b-11.dat	CryptoLocker_rule2
behavioral1/memory/1880-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1880-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001225b-11.dat	CryptoLocker_set1
behavioral1/memory/1880-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2536	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1880	2024-04-19_1ff338558783d9480630ab9324454ed7_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 1880 wrote to memory of 2536	1880	2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe	28
PID 1880 wrote to memory of 2536	1880	2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe	28
PID 1880 wrote to memory of 2536	1880	2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe	28
PID 1880 wrote to memory of 2536	1880	2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_1ff338558783d9480630ab9324454ed7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

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\misid.exe

Filesize
82KB

MD5
e1b42e976a0b5c25d09e199097b4090b

SHA1
5c27a50c529ac4f779f23f1850cf24405b6888b3

SHA256
4c72676232db0f82abb15e7d8143b2155ef13715bf682a2c46139e77212e533d

SHA512
b7cdcd8caf93f1760cb4adf9309013b8c7d51b8a6b68d81621bbfddc50ff0b86afd84bff59ef8a0c2bbb3cd474d8632641fb69cecafac60451e69d827b049a73

Download Submit
memory/1880-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1880-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1880-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1880-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1880-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2536-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2536-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download