2377e817e48e6afb4f598aaf9bb28010b400f913b50ba903eb1eef65d325520f

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 02:28

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General

Target

2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe
Size

60KB
MD5

1cd0dcf7d99c82d32045f2edc50aaf8c
SHA1

fb548223812be3f70720fe7c8d1f04de0f73b6b4
SHA256

2377e817e48e6afb4f598aaf9bb28010b400f913b50ba903eb1eef65d325520f
SHA512

be9ee04af31f77a16aa2fdc51aeeb7c8d7e5d11137935c6d9966dc98179176aac9348623e47c72dd5491b0e54418cd89eb91661fef51ef87f5a7346a9998f9c3
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+lxUU5:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+lf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1840	misid.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 4652 wrote to memory of 1840	4652	2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe	90
PID 4652 wrote to memory of 1840	4652	2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe	90
PID 4652 wrote to memory of 1840	4652	2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1840

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\misid.exe

Filesize
60KB

MD5
140643e3e3f7c224f541be829de06f1f

SHA1
dcfbe4d16219f388ef0300430a10d2753918325d

SHA256
cf0e64a7d96c96aa0e58edf65792e23ba2b17627eb6c017656da956c42bf19bf

SHA512
cfe8346e9f219f6f7a43716be45847fd4e81d4e7bdff812a6a22a88faa404fceead00377c61128d2dd858bb18df12d47deb7327e4dc3aa7d7f994ef7bb04c5fa

Download Submit
memory/1840-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1840-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4652-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/4652-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4652-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4652-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4652-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download