8dd6d272fe48363e5f47300a7ed23aa784674f17b1041c0022be835ad9aa5aed

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 05:17

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General

Target

2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe
Size

47KB
MD5

79e945e336d7229c410e5795741d60a1
SHA1

5396601265a53077d72d515cf6cb09f3bbe7c10f
SHA256

8dd6d272fe48363e5f47300a7ed23aa784674f17b1041c0022be835ad9aa5aed
SHA512

5a4e6cb96af5fc8815c5d64e1f60344a8a9164afc39d8b8e8b4119eadfa11fcb443f3f016ed85c22bd6048ad725b9ad359066a8cc240c479f7a68b379c952038
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3wwsr0B:X6QFElP6n+gJQMOtEvwDpjBDu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4504	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 4464 wrote to memory of 4504	4464	2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe	83
PID 4464 wrote to memory of 4504	4464	2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe	83
PID 4464 wrote to memory of 4504	4464	2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_79e945e336d7229c410e5795741d60a1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4464
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4504

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
47KB

MD5
ddcf1d045fcc2f6492f09169f054b2bd

SHA1
b2feb8a12cf4054c99a0df05cf04725802d8f34f

SHA256
5843fdd2a2c11f0a4952edf19ba4ffc1b31649d095ebbe598d42a9e0445d987b

SHA512
6bfc3a723caf6cf4e801f50317cd3ae0bd25e0c045f05827feea5c33f9481d270b5c26b44bb419e9bd10740dcef1626989b4e6deb5b447f647638714aab89cc2

Download Submit
memory/4464-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4464-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4464-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4504-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4504-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download