22a97b0059c17b5f1d1030cfe15c60bd1400f249cbc8d7daa9e35d83ea1136ae

Analysis

max time kernel
150s
max time network
151s
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, 17:27

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General

Target

2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe
Size

48KB
MD5

21fe39a99c04aaceb5a9b4aaf2b13be8
SHA1

6b8c486e338a946586d4b6e7f6082898e625386e
SHA256

22a97b0059c17b5f1d1030cfe15c60bd1400f249cbc8d7daa9e35d83ea1136ae
SHA512

d039d247df5cb786720bcd50657e5b01aa65bb5034e4ad76dd7b0607ff7270931f276b8ab8948ca817c81e3fd12f7b4453dc5580c44759e972e3c90d3dee1bd5
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZU1:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231df-12.dat	CryptoLocker_rule2
behavioral2/files/0x00090000000231df-14.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231df-12.dat	CryptoLocker_set1
behavioral2/files/0x00090000000231df-14.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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4172	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 5100 wrote to memory of 4172	5100	2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe	85
PID 5100 wrote to memory of 4172	5100	2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe	85
PID 5100 wrote to memory of 4172	5100	2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_21fe39a99c04aaceb5a9b4aaf2b13be8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4172

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
48KB

MD5
ec62710c9c22a2790f15c6e7583e8046

SHA1
f26bb78777e4c67118413b80a01d123a4e804f16

SHA256
a4ab7276c49b8374357114e1664571dbddf16f931cbc9e5787277182002aff01

SHA512
32f7d207662471a809805e238062e8b7b71eb6aa763d2065329d17c2dac81d639c90151ea61192e6d5c8f6a91533511279e1de2cce96f4f7a1ad1e56090eb03b

Download Submit
memory/4172-17-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4172-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5100-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5100-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5100-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download