b9a15aae4a836f46e11e3df0821d3e1cd81e0b03e6d04de3783ea12c13adb6ad

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/03/2024, 00:40

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General

Target

2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe
Size

48KB
MD5

64b9a9bd4a928f2aa315d60125942269
SHA1

94dc1eb53b3cd7b2a0900f0017cbecf38718e395
SHA256

b9a15aae4a836f46e11e3df0821d3e1cd81e0b03e6d04de3783ea12c13adb6ad
SHA512

481be48b3735d3d1abaf9a0d4f924b902c74a7fa5e74d4ff7ef245b22bdcc534fe24a4265f3d27feac1d949787a955eb1cd436b704a27963de232fc982870c20
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hvvkH:bgGYcA/53GAA6y37nby

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013442-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1988	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	2024-03-29_64b9a9bd4a928f2aa315d60125942269_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 2852 wrote to memory of 1988	2852	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	28
PID 2852 wrote to memory of 1988	2852	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	28
PID 2852 wrote to memory of 1988	2852	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	28
PID 2852 wrote to memory of 1988	2852	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1988

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\hasfj.exe

Filesize
48KB

MD5
8cda154173fa41a2cdefa9a689b46e8a

SHA1
230acd14984411fcfe0b0770e0b4c565cd64916a

SHA256
03b9f4fe059ec5f99088b192d9ea89f42105a2ce783f39685dab022265b1bcfa

SHA512
7cb5de59fa283c126a1de3b7fcad509b472405237d95526cfd61ae927bc12f56f3d76fac00cdef5e5509847b4ba1d69012266d9693b7d82b58e1f04bfe0b16b4

Download Submit
memory/1988-15-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1988-18-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2852-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2852-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download