ae67b3fdc10706aeb89d7570ed5b2f90def90c8fdde273474789d8da8e7676e3

Analysis

max time kernel
89s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 06:19

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General

Target

2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe
Size

35KB
MD5

f229041444e10f77a0dd3b1860fc163a
SHA1

f0d2a37d97669fffe1aa1e15a58941d0e91c78ae
SHA256

ae67b3fdc10706aeb89d7570ed5b2f90def90c8fdde273474789d8da8e7676e3
SHA512

53665337f55b04257830d6b1b8c3a2cab8652e432c535431cd07dc73ed45aae3c89c57d65b9d7cd08ca3d7d22621009c50706676bcfc0e7c6691f38b4d1a9b49
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKUe:btB9g/WItCSsAGjX7e9N0hunKUe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4788	gewos.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 1648 wrote to memory of 4788	1648	2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe	84
PID 1648 wrote to memory of 4788	1648	2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe	84
PID 1648 wrote to memory of 4788	1648	2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_f229041444e10f77a0dd3b1860fc163a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4788

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\gewos.exe

Filesize
36KB

MD5
ec54c2c68d453b5ee7be9467b3201164

SHA1
a6fd2045a69256f05e5466712773f48752d05b54

SHA256
f695e091fd2726039e9921acc8fc0ee51e9eb3cfe977d499ad84b476dae7f761

SHA512
cc96fa396d1384deb189c52d78ed779939579d45007e69d1e0770013ab5b8820d9aaa0bf7c0111a81f8543044cadb535081c3011f083a4d26e8e2be3fecc871f

Download Submit
memory/1648-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1648-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1648-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4788-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download