fc35a60da5d9eb7652550abb8092b5840464cc460830091f488eb263574d0d63

Analysis

max time kernel
145s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 09:45

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General

Target

2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe
Size

34KB
MD5

b137e73f1a9cf2b5f77de7536e229af7
SHA1

71ec7fa015d7271e8090f4094f89839d5bf50b3e
SHA256

fc35a60da5d9eb7652550abb8092b5840464cc460830091f488eb263574d0d63
SHA512

27a80b1e2e68f79471e6a559cc9883e2d94e7e9bc3aac7d1c22b3d8edcd24a0c77ee5aa04ff7eb8bee73691b8fbb2b443a503bc4736290540748fcf3bf03021e
SSDEEP

768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+45Uv:fT+hsMQMOtEvwDpjoIH56

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023222-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023222-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3516	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 2620 wrote to memory of 3516	2620	2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe	89
PID 2620 wrote to memory of 3516	2620	2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe	89
PID 2620 wrote to memory of 3516	2620	2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_b137e73f1a9cf2b5f77de7536e229af7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3516

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
34KB

MD5
f288362a3d4d42417e3f581b12445ae0

SHA1
28caf7933abf4da2e1cbfb521ea9b5b32fa23774

SHA256
b506e79f2a4b271cfd7ba49be7ce9e19bc522c67ca706cd2c8e7cdc791197f49

SHA512
cb352bcb88c60b79ab22d6951dc3adc21326abe1b646d06e8def1d3ae4db5433af83a3eb7c112bff662ef9f73c845105bb809de7e355c71a60beab19228bd8cd

Download Submit
memory/2620-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2620-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2620-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/3516-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3516-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download