fc4a6d6ffd8c804ca15f2c22541c2e606b67739803611e47990dde023c2544af

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 20:02

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General

Target

2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe
Size

47KB
MD5

e8974941966d70d535c208213c04ab8e
SHA1

1eae1d1d4123e4eb54c8a049176d4609ea75c997
SHA256

fc4a6d6ffd8c804ca15f2c22541c2e606b67739803611e47990dde023c2544af
SHA512

cb54b45bd2d54a53408ca04750528672b49f717a1dbc34b391e39d28a50e396081f2800ae6449d209f6b067b661137b987595802671d965b09a98bccdd843254
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hLVdz:bgGYcA/53GAA6y37nbB5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023221-12.dat	CryptoLocker_rule2

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-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation	2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4404	hasfj.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 5088 wrote to memory of 4404	5088	2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe	84
PID 5088 wrote to memory of 4404	5088	2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe	84
PID 5088 wrote to memory of 4404	5088	2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_e8974941966d70d535c208213c04ab8e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4404

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\hasfj.exe

Filesize
47KB

MD5
35b930906ff61b4533fa1ba032fd2882

SHA1
e865b5c4ac6f35a675cf7bb958a1441dfa3f5bef

SHA256
0f7589792a778c738bf20e16230155666a36cd6529a7dcc2246b5dee3c538e32

SHA512
b9e1defe4e71f664280756d8025543e63018bbd9eb1ca0196e50cf6eda8d827ebafb41677a11861b63c494d1b340304c0b28f957597400f3b22bc0a8bdd5b6be

Download Submit
memory/4404-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4404-22-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5088-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/5088-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5088-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download