f5ea53e4154e0c715d90307c4b320d6f06d97da2d491fc53d57d7c1b706b509f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 03:44

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General

Target

2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe
Size

52KB
MD5

b6ad49e2c1c1cb80ed72905cb3a74381
SHA1

3796e6a49b8a770f154714f0ca4a061933b481ad
SHA256

f5ea53e4154e0c715d90307c4b320d6f06d97da2d491fc53d57d7c1b706b509f
SHA512

f8db3d70c018130e9df90ae3d43958536f1323a3394b7fdb23ffab5a029943023d7cea51a02f8585386696611f98d276fc5d33de325985d830a2db5808ec8000
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccCGXliH:V6a+pOtEvwDpjvDG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b92-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b92-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4032	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 440 wrote to memory of 4032	440	2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe	83
PID 440 wrote to memory of 4032	440	2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe	83
PID 440 wrote to memory of 4032	440	2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4032

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
52KB

MD5
0a03bf31fb9b8cf2a61750fc1b0dff5f

SHA1
df884fbab7f50c31e962fe7a413145be4569de4b

SHA256
3bdbf5ff1d39c207e4391ce8585d677ebc5907d2a93691e5ad3e22de47086ad5

SHA512
372404703b52055711c79b45a7a4a724baf18da51db320c54692ca888e3a448cf5574ba4f6728cc45aac5deb23363825b3661ddaae724956c6d5c4a8e163c52f

Download Submit
memory/440-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/440-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/440-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4032-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4032-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download