3c072936810eb1bf23f2213f12c99ca885ca55a0ded271962bd99db701305480

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2024, 22:34

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General

Target

2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe
Size

148KB
MD5

c9c305e1b9b42f94d9d23d7321c8ca0d
SHA1

14623d09a09b8198a22599493796a7fb42612383
SHA256

3c072936810eb1bf23f2213f12c99ca885ca55a0ded271962bd99db701305480
SHA512

7512ff8c107de11492f25e76839e9dc52ea807c7ef4d8e78bddc4573711ab12e4d916af0a181e0c61cc3c5fb412ed9d06e8677f343bdc1bd609812c649a65b0f
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQbPlooHPPFl:V6a+pOtEvwDpjt22h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1396	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 3428 wrote to memory of 1396	3428	2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe	87
PID 3428 wrote to memory of 1396	3428	2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe	87
PID 3428 wrote to memory of 1396	3428	2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_c9c305e1b9b42f94d9d23d7321c8ca0d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1396

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
148KB

MD5
8c6a236462bd999645958f81d30e56bc

SHA1
f0578bcaa2b79f4c3df3cc606ad273cbeb08ac17

SHA256
271ae5a06c34da555f29c35eb9877a76602fd8c457cbe3adf44c81b6f20e06f1

SHA512
ac52d2f01692476aaf132e370a18dc2230053bdc91201da6ad53f9dc62c74ad6a5a450ce457f001228806c47ea44d8bf8d470a1b242ea4ee75bc0275369a7d4d

Download Submit
memory/1396-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1396-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3428-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3428-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3428-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download