6d61bd58878a417b5323ae331ab5461cedbeaf04acedbe4a5a6bf042f438cc74

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11-04-2024 03:24

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General

Target

2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe
Size

50KB
MD5

07c9e22bce2a8f3936be264367af06de
SHA1

9a504000631c8abffe5a9d1b5331e1cbd5435d80
SHA256

6d61bd58878a417b5323ae331ab5461cedbeaf04acedbe4a5a6bf042f438cc74
SHA512

4d48cfc11a98a9dcedcd3252d5a79924af14c7f04940408cb90bc19bb7b85dfa944cf6057f3186a8cadbcc4dfc9583bb5b0de4d1229144d5cbf3f539881293f8
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxd:X6QFElP6n+gJBMOtEvwDpjBtExd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e00000002315f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e00000002315f-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1160	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 4848 wrote to memory of 1160	4848	2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe	85
PID 4848 wrote to memory of 1160	4848	2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe	85
PID 4848 wrote to memory of 1160	4848	2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_07c9e22bce2a8f3936be264367af06de_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1160

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
50KB

MD5
e31fc454d7f21e23499e6827920d5a84

SHA1
478f970e4ad10237721e87389633bfa73c0b34e4

SHA256
4a4414f8a0cfa2d4b66cef30dc369665d0a229cbdabecdf69027385d369cbc3a

SHA512
85dae6e52cf80d7b6a4f1dfbb29f05f357a6c444d27df0f7fe6250a391c83f11666d3fe93063b9507d67aef2e9a225c6f5d6d9d6be821e58582c59eb86c5603c

Download Submit
memory/1160-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1160-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4848-0-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4848-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4848-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download