c2bd32e605c91b907fb8ac0269b78fb1fd8126ae40c6a0392ff6d025ff29cb39

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 17:28

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General

Target

2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe
Size

37KB
MD5

16832b29be07cf2f716a95e0d6f01c59
SHA1

265442252fcf025708d6cc66f0c479afd92fc116
SHA256

c2bd32e605c91b907fb8ac0269b78fb1fd8126ae40c6a0392ff6d025ff29cb39
SHA512

582db0fde827f1b71769a188e6912f02d23a644c89fe1b700a9a220b5b89cf47449a4784119f033626050d5548dae9e291bb56ad4a96709633200882941607f0
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCw08:X6QFElP6n+gJQMOtEvwDpjBmzDU58

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
64	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 3928 wrote to memory of 64	3928	2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe	86
PID 3928 wrote to memory of 64	3928	2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe	86
PID 3928 wrote to memory of 64	3928	2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_16832b29be07cf2f716a95e0d6f01c59_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3928
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:64

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
38KB

MD5
f617eabee06685d2d155cd3921076337

SHA1
2447587ddd23149539bd3827fcbddf5dfc0112ac

SHA256
579811f9b98df465bb0530a9f219f8e3a2a53d68618dd5d40cbeeb4ee74a57a6

SHA512
3ddda109f016d9988a2c281986ce194071e677bec0d8baa18d281cb37181902dcc55958545e9045c468e47c94eec03a3725885f4000c85a1c240714b6dfcdc2a

Download Submit
memory/64-17-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/64-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3928-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3928-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3928-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download