fd7e24833aa54709cf601284946717a49df9e5de822fa7bb56ad156ab748437c

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 06:48

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General

Target

2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe
Size

81KB
MD5

bb6b5e7eabff83e9db9503d8094e96b4
SHA1

159d572023fb0aa50369344873bb754d2477a56c
SHA256

fd7e24833aa54709cf601284946717a49df9e5de822fa7bb56ad156ab748437c
SHA512

ebd1cc90f4411159f7c90c9bb75c061a2f24607f1a2d929a677aaedd855da1ac9b7060e1cee1e945378ca2f36e08612b630ce0b620e401171de047fe1e1b6a4b
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAeR2:TCjsIOtEvwDpj5HE/OUHnSM2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3360-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001100000002315e-13.dat	CryptoLocker_rule2
behavioral2/memory/3360-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2108-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2108-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3360-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001100000002315e-13.dat	CryptoLocker_set1
behavioral2/memory/3360-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2108-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2108-27-0x0000000000500000-0x000000000050E000-memory.dmp	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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2108	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 3360 wrote to memory of 2108	3360	2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe	85
PID 3360 wrote to memory of 2108	3360	2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe	85
PID 3360 wrote to memory of 2108	3360	2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb6b5e7eabff83e9db9503d8094e96b4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3360
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2108

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
82KB

MD5
0039b02eed48165d8893c43aaab1bef2

SHA1
4728a08a42b4c1c5c6b744ffc55382d7ad45d640

SHA256
29c03498478f72d70c6687275552282f6bb05cc05b726690ba75e5b36baa3910

SHA512
47819be195a41ef9bc030b30b19521946a74ea2c34541844a2d766d31cf5a7692aa9bd984620463f1ecfabe8f53fa9609fee08090e31443ddd1c4064c44dd313

Download Submit
memory/2108-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2108-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2108-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2108-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3360-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3360-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3360-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3360-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/3360-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download