f296a13a705533d3782e01003d7373d6a0c654d6d3a409ced2eb7dda907283e5

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 13:41

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General

Target

2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe
Size

50KB
MD5

c7845f0eda82bcf80c52b04decccc112
SHA1

db3cb61d7acf8a117f98eb20c6b87630a665be8e
SHA256

f296a13a705533d3782e01003d7373d6a0c654d6d3a409ced2eb7dda907283e5
SHA512

3a327d18cb930a0734b45fffe23b95271e4c79bf38b186d4cefaf382522e1a12081f2cdaa77925d0442a74aa6d3ed7dcbda3641c8e6af0f73653036ab9af12b7
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIROk:79mqyNhQMOtEvwDpjBxe8TpXROk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023214-13.dat	CryptoLocker_rule2
behavioral2/memory/1036-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023214-13.dat	CryptoLocker_set1
behavioral2/memory/1036-17-0x0000000000500000-0x000000000050F000-memory.dmp	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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3508	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 1036 wrote to memory of 3508	1036	2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe	83
PID 1036 wrote to memory of 3508	1036	2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe	83
PID 1036 wrote to memory of 3508	1036	2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_c7845f0eda82bcf80c52b04decccc112_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3508

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
50KB

MD5
844db1c1f944c0cfbcf1f4379082ea47

SHA1
a0c9764bf293df767a68dfce384b4d7b952c77f1

SHA256
33cc3e5a62950af4ee2ae9888b89e1876c1788370d94e0c59005ab72e13d4531

SHA512
992c61f26d65255c4eb7fd2cc96b9bea43d6874f135b02abfe26ea8f8329de2d037b0fc901dc83ae6e2689e89e4f6a02c6b924d084b23d565268d81875d42243

Download Submit
memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1036-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/1036-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/1036-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1036-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3508-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3508-21-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download