057893b8328b949bb74db4dc985b70269ab66a028b9faa7a2da50857816a96d4

Analysis

max time kernel
149s
max time network
153s
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, 03:43

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General

Target

2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe
Size

80KB
MD5

40bdc87618234b078691d9a5e88b68e4
SHA1

f3d0225e092eb7e00b91c89b379fe8adef8a36ca
SHA256

057893b8328b949bb74db4dc985b70269ab66a028b9faa7a2da50857816a96d4
SHA512

c6fdec9a82a9b1c78104f7452ad0860f9b4e08099277775d2a036c65d3b6080bc500c99a9414fc6c2a1bb949c29f9b1616d0debf156dd80890c5c155cd5b6a0e
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNq3:vCjsIOtEvwDpj5H9YvQd2K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1564	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 2700 wrote to memory of 1564	2700	2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe	87
PID 2700 wrote to memory of 1564	2700	2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe	87
PID 2700 wrote to memory of 1564	2700	2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_40bdc87618234b078691d9a5e88b68e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1564

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
81KB

MD5
5b0821820bdc0ca8ecc9f1595ad22174

SHA1
3a6a98e65fdbbd81312919414d9a162aea924e0a

SHA256
19191912fb13cec5da7c2d926cb4d93ff15e8d6e4541d07d3290a25b0a87a827

SHA512
dd902cb13a0c2220202d2287272c34739c68eb76f41b94937d3d4ef7bda5e108b614b03cfa73657e73be884415acb59c687f634fd97260c96f7699399c89243c

Download Submit
memory/1564-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1564-23-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2700-0-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2700-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2700-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download