01274ce7654de12b6ed201f99ccd13f470fb6327712158a8e558513991f2fee0

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2024 18:42

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General

Target

2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe
Size

46KB
MD5

e06b4a993f3e6adda839ade0337b2c71
SHA1

da812e1f5de078206479f76917d2d1fdc98d4bff
SHA256

01274ce7654de12b6ed201f99ccd13f470fb6327712158a8e558513991f2fee0
SHA512

1f93650a3920249c812c5f513d8a42230497fa39f6ccb542c5ad5507440ece9cd616b494cd767c4722cae64b453a1334cf1f486d57653d2ed1053b6332a2d4ef
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSS/hJI:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2952-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023176-13.dat	CryptoLocker_rule2
behavioral2/memory/2952-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3472-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2952-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023176-13.dat	CryptoLocker_set1
behavioral2/memory/2952-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3472-17-0x0000000000500000-0x000000000050B000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3472	asih.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 2952 wrote to memory of 3472	2952	2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe	21
PID 2952 wrote to memory of 3472	2952	2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe	21
PID 2952 wrote to memory of 3472	2952	2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe	21

C:\Users\Admin\AppData\Local\Temp\2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_e06b4a993f3e6adda839ade0337b2c71_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3472

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\asih.exe

Filesize
46KB

MD5
1fe38f3a4198baea0103d34d08d6c391

SHA1
6d059f972029d07c5b5a3d0305ddcb335ef67b69

SHA256
13c84db1949be85c41e672459b6b74c65349dce29bc35e5a85d4f636af82bdf0

SHA512
0d2d619aea1969091bbb77f59af84665fe5e2803c1f41e026e8f2094781aebd2e0ac354033885a2a5a2f81c15fca17f53c23df70421b25110ee1876333c7147d

Download Submit
memory/2952-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2952-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2952-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2952-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2952-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3472-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3472-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3472-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download