87f2756ac241186bfa84907a08e4cb91aac20beebccdf9524cc9619dd4b83bbf

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 04:03

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General

Target

2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe
Size

82KB
MD5

73f53348ce491d4280e0c1c0415a3c65
SHA1

30c84e77d3cbae37123ca3d185bde2e58ef5788e
SHA256

87f2756ac241186bfa84907a08e4cb91aac20beebccdf9524cc9619dd4b83bbf
SHA512

36bce64a6753fb595ee7b82bb3a1e74a503e7222d451cba954a3f03eaf781b2e9fce34aa7b2f37895d86961252daa86aed8807cfadf8d062202278261c951e67
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrh8:TCjsIOtEvwDpj5HE/OUHnSMQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1904-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000800000001227d-11.dat	CryptoLocker_rule2
behavioral1/memory/1904-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1748-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1748-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1904-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000800000001227d-11.dat	CryptoLocker_set1
behavioral1/memory/1904-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1748-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1748-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1748	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1904	2024-04-19_73f53348ce491d4280e0c1c0415a3c65_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 1904 wrote to memory of 1748	1904	2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe	28
PID 1904 wrote to memory of 1748	1904	2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe	28
PID 1904 wrote to memory of 1748	1904	2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe	28
PID 1904 wrote to memory of 1748	1904	2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_73f53348ce491d4280e0c1c0415a3c65_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1748

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
6428fa04b4296eb24b9d22aaeaedcf98

SHA1
e80776d8865541ff8b2a41d8092099c79e176aa8

SHA256
f15bf973d643198c6801c14f9726b00428bb7fb5c09d9a0810ec5e693b0eca8c

SHA512
4962308ac5f9e5e900cb2e1669077cfffeb7d308d67dd5b859ac2967f4c7cf36c0328b6f010aa875f397cb7207c1518658e1c9c2a54faaca04356c0d43d1d7f0

Download Submit
memory/1748-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1748-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1748-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1904-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1904-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1904-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1904-4-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1904-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download