4b2e8d007eca5352f8635d4949e05737a5a43b9bee4dcaa7b805a454bd2ff56c

Analysis

max time kernel
146s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 07:31

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General

Target

2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe
Size

84KB
MD5

334ca667c828447e43dcce0592849bd6
SHA1

8f3cd91591b175c6faa2df80e1688d9e5b065507
SHA256

4b2e8d007eca5352f8635d4949e05737a5a43b9bee4dcaa7b805a454bd2ff56c
SHA512

ce4cac0b78c7d9f59e8d7b7a288c3e4256b1c4a1c689e779ad357632f53905d43c1d9d5c80e2bd84e77c09f7476b176318f2b6ee77413faff9eb6698ea4ac23f
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnY0:V6QFElP6n+gMQMOtEvwDpjyaLccVNl60

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233ce-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233ce-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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	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 4552 wrote to memory of 2876	4552	2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe	88
PID 4552 wrote to memory of 2876	4552	2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe	88
PID 4552 wrote to memory of 2876	4552	2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_334ca667c828447e43dcce0592849bd6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2876

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
85KB

MD5
018276b89b9feda69e7136281dad7c32

SHA1
ee93152a826bce43729eadef0f58365e6669cffa

SHA256
ee6ff7c9346f816da6de5659ab949a0d867fe19efb50d7a3cfef334bf3ffd6f7

SHA512
44c8e56a0944db261f68c10212606d76786168d53dfd288d903f3c34f41c0f7617dc150f329335fda793c73f4804b05cdcd4761dc970efb5bb76e52a5a74a574

Download Submit
memory/2876-17-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2876-20-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4552-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4552-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4552-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download