3b67d11adade8e8674a35c9d37f912930d0d911d881d4d0d7d5c32667e8528b4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 15:38

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General

Target

2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe
Size

126KB
MD5

4cff15ac5cc288c448b361c54aaec524
SHA1

4d56e22d8514d1251e593591d12e73d6ace84e03
SHA256

3b67d11adade8e8674a35c9d37f912930d0d911d881d4d0d7d5c32667e8528b4
SHA512

c8da85d9a6daa33a8926de6b2e8e2379b53e99756ba87eb12a7f89966f3487f261e412617bf0147bfcff41a01fb4c4600a70baa182da80ad22049df5c44feccc
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpR/zR:vCA9OtEvwDpjn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002320a-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	misid.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 4172 wrote to memory of 4620	4172	2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe	88
PID 4172 wrote to memory of 4620	4172	2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe	88
PID 4172 wrote to memory of 4620	4172	2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_4cff15ac5cc288c448b361c54aaec524_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4620

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\misid.exe

Filesize
127KB

MD5
00e3dff9964d889a3269f5c131043a97

SHA1
3d1e8f0f55c839d54b78f467dfce989cee1847f8

SHA256
81ee603fa56ff4563dabf5a095e827db664e6649fb3d3f123ecd25ed8e3c2344

SHA512
700f47ce909c29ecf15e1fb36b7b08b86ca9bcc2b13ea3d34b938e297ca935857e417cb4e1ea394d6b8de5b5cf145e3a6fcfbe90c63c189ca6c93e80ef30955f

Download Submit
memory/4172-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4172-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4172-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4620-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4620-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download