5ec1dcda5f7f1ac572a02151037810005d1426d1f6ef6ed7cfe10ac12e9385a1

Analysis

max time kernel
150s
max time network
153s
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, 20:29

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General

Target

2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe
Size

40KB
MD5

28b4645be1b2e510c61e0994b0393ef1
SHA1

4ad56497ec966613465a185a4c61d50be6bd20f1
SHA256

5ec1dcda5f7f1ac572a02151037810005d1426d1f6ef6ed7cfe10ac12e9385a1
SHA512

d035b7cf1c637dc11f5e5a028fb8a614c5df1bc61dd351344daf9d8171109adf8ccfb90ba5c1b4ea6ea608c757bbd1e0d87865a7564a110f4639d3ef456a8e23
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLmWOqH:ZzFbxmLPWQMOtEvwDpjLeUHOI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320f-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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4844	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 1916 wrote to memory of 4844	1916	2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe	84
PID 1916 wrote to memory of 4844	1916	2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe	84
PID 1916 wrote to memory of 4844	1916	2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_28b4645be1b2e510c61e0994b0393ef1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4844

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
40KB

MD5
df2204328be881db8c0c704150c216ea

SHA1
72d86a107f7006ca0c4ad6da1519d6a86ca9ee8b

SHA256
85cc45ff2cc848da59a2d40bbb459fe27c76958f7e1d29fc302a0f42c89749b0

SHA512
37db1d9dbc0ed4d9eb5cac8d4ed5bf9eb42734704a1f86a2ad1fc25e0b21ca2a74b114ffe67cb1e3b501ada653846649d4f11fe6d509e35c66ccbe31c442517d

Download Submit
memory/1916-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/1916-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1916-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1916-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1916-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/4844-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4844-20-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/4844-22-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4844-27-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download