acc349fba2cc4efe4fd2319436580729bf122d8382b6c50137952495b1bd06c6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2024, 16:32

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General

Target

2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe
Size

72KB
MD5

196b42c6b3f97ae7cc12511d2a59d2ee
SHA1

8cec5a2cc00da5b0cd7a8d6d9c88ff16e6c7fc1d
SHA256

acc349fba2cc4efe4fd2319436580729bf122d8382b6c50137952495b1bd06c6
SHA512

d4b7ef3c61de1ea40bf336a9b4b94ec83511ddb99457ba3ccfab4a8547c1522a26e2b628ec0402562df378e17ce5f7c1146b9c8ac2682d4eddf7003ec34da0a8
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RM:X6a+SOtEvwDpjBZYvQd2m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023124-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023124-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
636	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 1856 wrote to memory of 636	1856	2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe	88
PID 1856 wrote to memory of 636	1856	2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe	88
PID 1856 wrote to memory of 636	1856	2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-22_196b42c6b3f97ae7cc12511d2a59d2ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:636

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
73KB

MD5
9af352d58b6d88df9929b3f0448609bf

SHA1
12315502225a9231b4e42afac27c31bc36944c09

SHA256
6a9072e567c98538ec4b437b0b3811bf80d17c610e6665986d0250c6d80f07aa

SHA512
abb18c2ed853497a06cb4144a68967ff9666985bf5771bb00f7626c9b4a9b2653ff90ee06cdc9af3ec21332e345f564adc1e9915c7670a8ded8b5a42cac9ebc9

Download Submit
memory/636-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/636-19-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1856-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1856-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1856-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download