36b75963f19ce5118a5d6d246261281e52af7536d46b2f7f93039fa241915a93

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 13:45

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General

Target

2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe
Size

133KB
MD5

aba8b9ec831fa862cf4cbf5742db0e1c
SHA1

97ef1fb4c239dc5738625c67466ae6c0df5f3803
SHA256

36b75963f19ce5118a5d6d246261281e52af7536d46b2f7f93039fa241915a93
SHA512

117fe0a150fa7bcd78187dc6ec50968929aae1ce49ebbcc5f32ec086a2719ce6181b0b2f7443276ffc287b1556c080da4ac8ad0d466c449e9226422bea138a0a
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQblPgP:V6a+pOtEvwDpjt226

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000224f7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000224f7-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3168	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 1940 wrote to memory of 3168	1940	2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe	87
PID 1940 wrote to memory of 3168	1940	2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe	87
PID 1940 wrote to memory of 3168	1940	2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_aba8b9ec831fa862cf4cbf5742db0e1c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3168

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
133KB

MD5
32313a78e34bb28f4e7a99947d8834bf

SHA1
e8b3295f408817b37d4ad09bf2a0067cea38f054

SHA256
65baf29dc61fd1c2015517d9374635ffcc9e9c17f30fdae3405539fa0a7bf470

SHA512
b0af990b97763781f8d300c05fd4b90e1d97e2dc1ce3876b39543844f47cf7381f39ac20b4b06467668fc009d1604e277e3e2e22ca285cc6a977818d04e52f0c

Download Submit
memory/1940-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1940-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1940-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3168-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3168-18-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download