37aa672a726087cba83eb3776ccd862d10fc5e1c52238648d6513278b70ac792

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18-01-2024 13:42

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General

Target

2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe
Size

49KB
MD5

9f46c6231e4a3b70c8f1fc80841398c1
SHA1

ecc64ccf21d5490f894767e86fe64c0287305ac5
SHA256

37aa672a726087cba83eb3776ccd862d10fc5e1c52238648d6513278b70ac792
SHA512

310889dcac5075861c3104e9b39fb5fa99488f925a15ff0f56f2b8bd081931d0e8f387e3cf8ef671d5e7983924d0855d704d992c384ad89bd9dc35fffb660725
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPxyV4tFVgQi:bIDOw9a0Dwo3P1ojvUSD4PRtFVgz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001224c-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2676	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_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 2112 wrote to memory of 2676	2112	2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe	28
PID 2112 wrote to memory of 2676	2112	2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe	28
PID 2112 wrote to memory of 2676	2112	2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe	28
PID 2112 wrote to memory of 2676	2112	2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_9f46c6231e4a3b70c8f1fc80841398c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2676

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

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

Filesize
49KB

MD5
6fe11d55d9cabc08654e26ce2119f17f

SHA1
6aa17027db94ea9682164eac99e8eea08fd4245d

SHA256
fcadae2dbabcec3cb527bf8f47e4a1730cd290c7a64cb05314f5372032482566

SHA512
6d0ead8152ea7de4538d2b37b6344f61f9528dec7b7988d1e81fece3efc7b6c182a7a6945e67009fc5e3bdfae84c458b3c8c243beeee1c96b121ef5484c475c0

Download Submit
memory/2112-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2112-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2112-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2676-22-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2676-15-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download