f64c235457a9da8efbc83d627beeb96cccc96feb7559d28d92fb4b35dbc199f1

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 10:28

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General

Target

2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe
Size

75KB
MD5

1bb5687f62f9391e1a9df74a5f4cc587
SHA1

a1bb54146245216352161fd444bb99ded6f47a4f
SHA256

f64c235457a9da8efbc83d627beeb96cccc96feb7559d28d92fb4b35dbc199f1
SHA512

8da4201c4f76f2ebeb25c7253e5f276a660f95d0411b1af128426a8b8445b05c653a9917943eae429b1caa2d101b401f79b16f2653b4963d2d102a4f840d87bd
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siMOl:X6a+SOtEvwDpjBZYvQd27

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023158-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023158-12.dat	CryptoLocker_set1

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	asih.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 3772 wrote to memory of 2756	3772	2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe	86
PID 3772 wrote to memory of 2756	3772	2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe	86
PID 3772 wrote to memory of 2756	3772	2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_1bb5687f62f9391e1a9df74a5f4cc587_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2756

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\asih.exe

Filesize
75KB

MD5
a9835ab1076d8350c67fe322aca1ce1d

SHA1
773d728d13147358c93062251bdefc1e26a8941c

SHA256
05cf3196347963fef147b259e63997c77f24d301b7766459591f8e0bf475c1f6

SHA512
9c2110bc4d37318af4ba5226c18c83f26dd2d1db8bce3363a10ca5ff8993b93d2b4bbc158df3195f16b183f290769239b5b33a9b07919efffb3804eed5cc8712

Download Submit
memory/2756-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2756-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3772-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3772-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3772-2-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download