166a6f526c1a3b3f5cf210d2b56bbb9995d2f519af00b00932a4c505d7f0c3ae

Analysis

max time kernel
148s
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
20/02/2024, 06:33

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General

Target

2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe
Size

101KB
MD5

41f4711477ef3c09eec0968d08f64c3b
SHA1

a8427e4ff6e2d436c0c4261d4c3d3b712cd673a5
SHA256

166a6f526c1a3b3f5cf210d2b56bbb9995d2f519af00b00932a4c505d7f0c3ae
SHA512

82990798c7a4ffea0eed0a7d2c866a4f8e2917eda8174c9a962cd824653861b2a73a2ad785619ba8ae988923dcecc67b2fd4558570610f266780801b85f2a62b
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNuj2GQi8Ao0w:V6a+pOtEvwDpjtzX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023201-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023201-12.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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4716	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 3468 wrote to memory of 4716	3468	2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe	85
PID 3468 wrote to memory of 4716	3468	2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe	85
PID 3468 wrote to memory of 4716	3468	2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_41f4711477ef3c09eec0968d08f64c3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4716

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
101KB

MD5
11df1adf7523a65d642df130be7d20bf

SHA1
6f519682398ce823b01814f5ebb9ab0eda09d322

SHA256
9eb7659e36c4c657e21cb2f7a90ebe568f5903fe755dc02aa100998f5d6dce86

SHA512
2b79cf87127e96f12e40faacc5021529ab1160ce8dd31e8d142e5003af6c9a09188aa0d6d01e529b4f08543c495be8873e4c8c66d7c9e08f7eb2a567483d481c

Download Submit
memory/3468-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3468-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3468-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4716-19-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/4716-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download