976af9f46666ae98e7ea97348331b738ab0add0a114a3104b0c28ea958a13bd6

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 21:37

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General

Target

2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe
Size

48KB
MD5

acc8e1d2dd158a4262ba11210430edc5
SHA1

32e80ab88004d0249f25b5706e7fe51ddba80f39
SHA256

976af9f46666ae98e7ea97348331b738ab0add0a114a3104b0c28ea958a13bd6
SHA512

6fa94c5e82333e19d701aee17aae96d7f19967a5f532477e524247f23685df2b5ded006afbec376a217b9c6dbf8d87d8c775e116a84e2099bb7d3b5d252a368d
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkclV:P6Q0ElP6G+gJQMOtEvwDpjB8WMlflV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4636-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023444-13.dat	CryptoLocker_rule2
behavioral2/memory/4636-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1600-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1600-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4636-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023444-13.dat	CryptoLocker_set1
behavioral2/memory/4636-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1600-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1600-27-0x0000000000500000-0x000000000050B000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1600	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 4636 wrote to memory of 1600	4636	2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe	83
PID 4636 wrote to memory of 1600	4636	2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe	83
PID 4636 wrote to memory of 1600	4636	2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_acc8e1d2dd158a4262ba11210430edc5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1600

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
48KB

MD5
d50d20487f1dcc20f78c3972dec66415

SHA1
265d5d3c82125cf0a27b0e0210af5eefb1d68cca

SHA256
0ef80dffbd24ae0815cc8c779528fe9ff0a74b7389fec0696959848a7a10c7f0

SHA512
47792b0be0846a8c47bec915ae232bfd85faa54c9a8e56677011cc268a5922772d9f5492a69d38c76b3ed467bc888736acf54f98247b7fe0c9b1661eb90fd29d

Download Submit
memory/1600-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1600-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1600-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1600-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4636-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4636-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4636-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4636-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4636-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download