a762310970591fc8f3ec3fd2b25028691e8aad5f484c887f770f606fde517a12

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 18:42

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General

Target

2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe
Size

37KB
MD5

96a744ade6f0d21f59e1d0ed786b238d
SHA1

deafc8b0a3684b7b7740744765cb52686e3331bd
SHA256

a762310970591fc8f3ec3fd2b25028691e8aad5f484c887f770f606fde517a12
SHA512

c537a1ad230afa13e80c218d7537636333001ba1f1ce5ce081eb5ea68fe1db176d39119aa7ee2680feaa4108afe4a5a20b06f923b3e673abafc674cfaccdd23a
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZr/0Q:bgX4zYcgTEu6QOaryfjqDDw3sCu5q/b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023212-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4028	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 3148 wrote to memory of 4028	3148	2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe	85
PID 3148 wrote to memory of 4028	3148	2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe	85
PID 3148 wrote to memory of 4028	3148	2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_96a744ade6f0d21f59e1d0ed786b238d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4028

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
37KB

MD5
2a68b48f1e3a5cf5e1b1c9c17cb3d7ef

SHA1
66f3a075da1f4990ec544d4554798d9ae08c08b2

SHA256
268f17d3ff0b075e99bcdda1edd381e2b5d854ed05eaf71edeecfa980fef0550

SHA512
d3e9c7f40fdb7a187229daf4035a649ebdd249b0977baf9b8ca1ae87d94a3dfb4f06b4d15b49474cf5d26e370c0cbbf0fb60443befd8ff19589fed1ec67eea9e

Download Submit
memory/3148-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3148-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3148-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4028-17-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4028-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download