de35dbbc62cec7180094e8b2455593d7fc172b00637a62d13108c8cbf3a2a742

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 15:42

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General

Target

2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe
Size

42KB
MD5

bac3494b9916b8388ff08131047e8baf
SHA1

b1b0fa572e256eccf9beed46bf5c5cd191281a22
SHA256

de35dbbc62cec7180094e8b2455593d7fc172b00637a62d13108c8cbf3a2a742
SHA512

50a7e402f8c62bdca1a6207368e02275d98843806444cd863bf3a7ca2dcee318d9ef6cb7fcdacc60db6698fd26f79203548ae4e86e820b2b489d62993c40c10b
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD90:X6QFElP6n+gJQMOtEvwDpjBmzDkWDa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5056	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 2176 wrote to memory of 5056	2176	2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe	85
PID 2176 wrote to memory of 5056	2176	2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe	85
PID 2176 wrote to memory of 5056	2176	2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_bac3494b9916b8388ff08131047e8baf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5056

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
42KB

MD5
be984304dc621c94f8573a8f170bde3d

SHA1
be368c13f87b9659fd63611888b89ec38c0e01b1

SHA256
830c329726971f89f7bcc99f3cea1727b7ac29db64b925102ced86930c27be40

SHA512
51a67cfcc492d16ddc60d5f5c2f643a4597c1047ce168d80415d8d52347a5c78e827a6196ae83c1e0236a53c9b75d996f40c5904de07fa0493463ce4cd0a80d6

Download Submit
memory/2176-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2176-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2176-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/5056-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5056-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download