bd4a79dc2bf273142cbe70aaf5f1c4cc68c75e1a9468c909ebbe28ba064d439d

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 18:44

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General

Target

2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe
Size

50KB
MD5

a18b59eabba19626d93afb2adc6e4943
SHA1

f708392baceefa8d7174b13fe865282a62f399f0
SHA256

bd4a79dc2bf273142cbe70aaf5f1c4cc68c75e1a9468c909ebbe28ba064d439d
SHA512

5dd3ae7ead812031ff5d33629341374caee52374f2ec2a1132863fce5a4667c006d8686cf743deb82565888548882b47d86bed347038ae83d4038d82964bb37a
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcXe:X6QFElP6n+gJBMOtEvwDpjBtExmlb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1876	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 2052 wrote to memory of 1876	2052	2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe	89
PID 2052 wrote to memory of 1876	2052	2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe	89
PID 2052 wrote to memory of 1876	2052	2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_a18b59eabba19626d93afb2adc6e4943_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1876

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
51KB

MD5
cb4995799d728b844bfab3cf7bf6c2e8

SHA1
4ce4ec057d5d60ebacfe923ffbb9c79d8e4c19c2

SHA256
fa9b06b61941c23d3979d7378b372e697db450e756e4bdba9cf892bc7974d51f

SHA512
56384caa265cc18f777a15e07f445deab6e4b31424fe180073a2ab58c0ce7f9b142bde40d81f4ad350abc0875c44725a7e9adab372aa6d12eb5b02ecd9492af4

Download Submit
memory/1876-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1876-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2052-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2052-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2052-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download