c5b8447f7d6e4470a1cfc0040d538e96bddf6de051b7fcd72e5dbef31d67929e

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 22:33

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General

Target

2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe
Size

40KB
MD5

26bc472484b207ecd5a8f557bce6b4e4
SHA1

f4457cdec199c26c2306d95ff3b1be6e2371aca1
SHA256

c5b8447f7d6e4470a1cfc0040d538e96bddf6de051b7fcd72e5dbef31d67929e
SHA512

ab9b9e98724fe71e76aaae1c2bca75bc03f913dafd4f308cd986e807fe1d0772c1a5cc6c164fb77b9429fad7b8a670794ab4bc8a95ea8df02450ac25975b66a0
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqJi:bxNrC7kYo1Fxf3s05rwxbFSi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4912	pissa.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 4912	1520	2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe	91
PID 1520 wrote to memory of 4912	1520	2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe	91
PID 1520 wrote to memory of 4912	1520	2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_26bc472484b207ecd5a8f557bce6b4e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\pissa.exe

Filesize
40KB

MD5
116a5fd969d90de8abc76f95e74ae16e

SHA1
0be591b8b7f3dda74688c8964414b881976e8c77

SHA256
fa2e5c3d77e0c3696bfc2f4708a208bea7cfc28fb783afc187770814e26a7769

SHA512
39c4b617ef90f0d903371b46b4e6598dc05715d03907e9f50b6124e845191532f526982872df7ae148716b0e9af477cc34fe7c5c8c0a335c773b1eecf2c5d597

Download Submit
memory/1520-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1520-2-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1520-1-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4912-17-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/4912-23-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download