df4942d0882797c920d009a90d7cbd424916e68d687e5ff13b9394b79391886b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-03-2024 22:25

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General

Target

2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe
Size

96KB
MD5

e5bdbee3e0bd3d7737cd185e23402874
SHA1

fc962060ff68a0d1e9e700b118578fb1eadc09ac
SHA256

df4942d0882797c920d009a90d7cbd424916e68d687e5ff13b9394b79391886b
SHA512

23a967454f6fbfb26269df92ab1b4cbc8fbe6df0b71054fd5dcc1f806bd492acc9cf3383c8daf3a11be09a0caf1d58391db3fbcecc059c6a1f29188f528f4a63
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0xyY:V6a+pOtEvwDpjtzx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
116	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 3844 wrote to memory of 116	3844	2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe	89
PID 3844 wrote to memory of 116	3844	2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe	89
PID 3844 wrote to memory of 116	3844	2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_e5bdbee3e0bd3d7737cd185e23402874_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:116

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
96KB

MD5
b65f0d644685a3d878ecdb183463299d

SHA1
6c4b2e158cda0104a7df96771d229717253870d8

SHA256
360072f4c34283f1eec36b2c25cfe9d85910c88be4875f007731c9bc2fb8b174

SHA512
4833c1806bb32cc68116aa8add84c575cfedb641e991f8ff96c25442789784bc59aba20eb99b307fda92c05efca3577bcc269df516247a3a998aa0777f2fe8a7

Download Submit
memory/116-17-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/116-20-0x0000000001F10000-0x0000000001F16000-memory.dmp

Filesize
24KB

Download
memory/3844-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3844-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3844-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download