de265a5afa7019af8946220b5576ba5a5b0548c737f67284209aee3740c121b6

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 20:52

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General

Target

2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe
Size

36KB
MD5

c6ea800f5d685088a20c5fac329cf871
SHA1

23c3296d2053d045507d6db93bddefc7fe232330
SHA256

de265a5afa7019af8946220b5576ba5a5b0548c737f67284209aee3740c121b6
SHA512

949783ef74bdb5805bfc455c08a66026b7e6b454d9385f4ff31693b8c872c5bb3867ba645225d6b2d79af65da3550ab67f2a8747a8da4b3f43cdfd2b7f76a2f6
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVajSKm5uhy7O4qqZ:X6QFElP6n+gJQMOtEvwDpjBcSKm5uhw5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023142-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023142-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5096	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 436 wrote to memory of 5096	436	2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe	85
PID 436 wrote to memory of 5096	436	2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe	85
PID 436 wrote to memory of 5096	436	2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_c6ea800f5d685088a20c5fac329cf871_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:436
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5096

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
36KB

MD5
cb847c5766ee6df56ee2840bbaa33cc1

SHA1
b9f89e253427ca5b71a81f079575e04899131a33

SHA256
9a9dd1aeadb69d54c084007ed615fe806c01f0c9d348064095ec9b58dcd91247

SHA512
e1efee906f894d33244e6a24ce7f539e876fa1207f1ac6b3bf38b0971e0964caaba56fee007485ce1baae7e2db64b9cc57ed4470131b619ef3b49339c30b1d3b

Download Submit
memory/436-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/436-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/436-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/5096-17-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/5096-19-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download