3a1bfe2b550387596a3ea9b2bfbbbd1f5952e1c8f3b8ea45d55bd8d6b45d9693

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 04:54

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General

Target

2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe
Size

98KB
MD5

80f7add38b6ff9fc07d3e9ff8f4e932f
SHA1

e2767a941c65ec65abd1ed00415693aba15a2361
SHA256

3a1bfe2b550387596a3ea9b2bfbbbd1f5952e1c8f3b8ea45d55bd8d6b45d9693
SHA512

66f2d81eac3d56b3c048717795600fe578b4e619cfdead901f76a28934420fca520e96b2bd53a7afc473861166ba1852b20a524cb509487c0b6fb252a78ab52c
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwL:26a+2OtEvwDpjtzQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001fc40-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001fc40-12.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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4584	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 4568 wrote to memory of 4584	4568	2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe	89
PID 4568 wrote to memory of 4584	4568	2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe	89
PID 4568 wrote to memory of 4584	4568	2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_80f7add38b6ff9fc07d3e9ff8f4e932f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4584

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
98KB

MD5
fe3e2a3e0408e3cd3c4c255c4d28a78a

SHA1
b30eb2a1d794932364284c0f31c91a6a74125ed2

SHA256
5c9f837e4d3a863217d22f40b75e11ec9a52f8ee9da79779d718aa007300691f

SHA512
3e82cac981ef1b8ed463b0bbab46c38efad94dc420cbe97ab06c041ee8009a25a9411e5c9d12b5196fc39d69ccfa61c831dca93fb186b377c8bd5b4558cbcd38

Download Submit
memory/4568-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4568-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4584-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4584-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download