37bdc0f20c613206a88448f18139da1208a8db6d7ffd1dc46888a58b78dfb34d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 07:23

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General

Target

2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe
Size

103KB
MD5

159af65b7cb870cfcbbd23d845672d12
SHA1

e82cdd372789e7aaaab0faa374779c3870680ecb
SHA256

37bdc0f20c613206a88448f18139da1208a8db6d7ffd1dc46888a58b78dfb34d
SHA512

c0b21c8a01fe09b9ae9515c86e439d480625ab5119f01e06dac085a0e2d8622a762eb3dcc92717065d0a1a7d786dbb8b2d5345f1e0c5cb59a945762676f66a9c
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwqWsviPt3fQ:V6a+pOtEvwDpjtzY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023228-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023228-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1648	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 3136 wrote to memory of 1648	3136	2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe	85
PID 3136 wrote to memory of 1648	3136	2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe	85
PID 3136 wrote to memory of 1648	3136	2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_159af65b7cb870cfcbbd23d845672d12_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1648

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
103KB

MD5
ace9549f842edbbe61119c720455a60c

SHA1
dcb1987a541664566c9903a04ecf156f4a0d7eac

SHA256
d788fb3ef635bffa5249210ff645599814e6c6b72ec9b06b51c377c6ebcf6e9a

SHA512
4916b60e287e911664b1b587c9c1b78bd63705a15c04864a48881cb3eaf08b83554c6e4c7051f47f9c1ff72558f34b988a0bf1b46b8f3f0234ea2161e65b3bf1

Download Submit
memory/1648-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1648-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3136-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3136-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3136-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download