85159e3e07db81b208b4dd072198ee9ad5926add64e7294b5e9b93d505c61da8

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16-05-2024 22:24

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General

Target

2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe
Size

41KB
MD5

73119cebfc07207f74445458599d80ab
SHA1

c4b3a40854040909ee359776c7f508a08117f594
SHA256

85159e3e07db81b208b4dd072198ee9ad5926add64e7294b5e9b93d505c61da8
SHA512

8b3afb7af41f9f049aef08d9bfa41113828f14746e6f1b41d6e7905b827aff9bd42176c880a13819460b63fc36f4d8b7fb683a5c6bc9087540dfc50a63cf0cdf
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCX:X6QFElP6n+gJQMOtEvwDpjBsYK/fE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023270-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023270-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1816	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 3932 wrote to memory of 1816	3932	2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe	85
PID 3932 wrote to memory of 1816	3932	2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe	85
PID 3932 wrote to memory of 1816	3932	2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_73119cebfc07207f74445458599d80ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1816

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
42KB

MD5
cb7c228fc5eb16245538c639c76f8470

SHA1
4a2072538c08e8ed02551b5bc3412a545ac4c48d

SHA256
69be5467cd23beb79401aedd9802a250b57159f6dc0e62b7bc123988964974e6

SHA512
2dd12d72f642d14b2ea4fe2c2560f2d97b54efb2fe3e997c74278fc2141bb41af9a13522eb59c9aa2ae340eb21a3175b1638d587552a630918d96f055a1ca727

Download Submit
memory/1816-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1816-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3932-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3932-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3932-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download