9427334ad1e055877fc483a2f3db361d04e5e91b962f980524448ea69f25fa35

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 16:12

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General

Target

2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe
Size

42KB
MD5

903fc1129f93c7db3a2188628b450c0f
SHA1

5e16a6a5826b47060290b825cc62c218b31b68cb
SHA256

9427334ad1e055877fc483a2f3db361d04e5e91b962f980524448ea69f25fa35
SHA512

20f25fd984b166790ac9ee81719077e2d3da21988a92855c6472d331da4a310e7231e7d68545c728d943de7855fca9fdad53b1f8987d1b237bddb16d5ab50fe0
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIis:bCDOw9aMDooc+vAls

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2044-8-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015d31-11.dat	CryptoLocker_rule2
behavioral1/memory/2380-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2380-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2380	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-04-26_903fc1129f93c7db3a2188628b450c0f_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 2044 wrote to memory of 2380	2044	2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe	28
PID 2044 wrote to memory of 2380	2044	2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe	28
PID 2044 wrote to memory of 2380	2044	2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe	28
PID 2044 wrote to memory of 2380	2044	2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_903fc1129f93c7db3a2188628b450c0f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

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

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Downloads

\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
42KB

MD5
5abe038add8e849b20b69cddb0403779

SHA1
6bf57c123c6353dd29c64a2fb89dd1efaf0dec53

SHA256
54e986fce8a5570fca2f22b2a0f67b096c1644f3b4144eb7f1e728a0b43c74ea

SHA512
02c68ff2b1a9d1b3672ac8493d70a8621188b29aca5a9e38798a6b1845a29d07bd61829997b818b7867ba30726fe56517a63fee1ff70ae0247bb49b150f4892a

Download Submit
memory/2044-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2044-8-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2044-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2044-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2380-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2380-17-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2380-24-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2380-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download