b790802e96e7a68ad6a5a9d84d4f23b6035db8c0dc45fd57ef21706b09e17996

Analysis

max time kernel
131s
max time network
156s
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, 01:32

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General

Target

2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe
Size

38KB
MD5

42c5365cf0682ab9d91382a8d285dc33
SHA1

f9b752b77f3c9fb9e5345343efa866de2557c754
SHA256

b790802e96e7a68ad6a5a9d84d4f23b6035db8c0dc45fd57ef21706b09e17996
SHA512

5c97cf46b0a613cd3a678c0a04d9f07b269efdc84fa9260c4f48eee92795b7b5cfc98611cad2362cb79ada0aa995ed2951d72a54b978981908b0f0fb4a36f7da
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLLM:ZzFbxmLPWQMOtEvwDpjLeUw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023213-13.dat	CryptoLocker_rule2

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3372	misid.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 2404 wrote to memory of 3372	2404	2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe	84
PID 2404 wrote to memory of 3372	2404	2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe	84
PID 2404 wrote to memory of 3372	2404	2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_42c5365cf0682ab9d91382a8d285dc33_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3372

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\misid.exe

Filesize
38KB

MD5
77d3fc9084073f216557df739dc32bed

SHA1
053d2b682084ccdb4dfae23ab8ba05e2f0a6cb5c

SHA256
49af6e877b20c500bdef3ae910ed7f9c6c831882d11b34fe4a39b952774f844f

SHA512
6124a7473af61a3bdba77cc6293dbd2709ec28a326ac97efef911c70bc6a2f4c5844ef67dfee9df350aee2f2aa8c2b36677cdfe1120f4f07719a730e067cbc68

Download Submit
memory/2404-0-0x0000000000450000-0x0000000000453000-memory.dmp

Filesize
12KB

Download
memory/2404-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2404-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2404-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2404-17-0x0000000000450000-0x0000000000453000-memory.dmp

Filesize
12KB

Download
memory/3372-18-0x0000000000630000-0x0000000000670000-memory.dmp

Filesize
256KB

Download
memory/3372-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3372-21-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/3372-27-0x0000000000630000-0x0000000000670000-memory.dmp

Filesize
256KB

Download