07660b1200ec38c89b2e117ae45b22b4d94817ff3322d5e2ac88df9717e2e07d

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 04:40

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General

Target

2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe
Size

42KB
MD5

4625b4f10dab2d9b4a182b35ecd382e0
SHA1

5f302db2b596686ffb1065abb7f64444f27018e6
SHA256

07660b1200ec38c89b2e117ae45b22b4d94817ff3322d5e2ac88df9717e2e07d
SHA512

b822d182f01e894d3a3af976dfb07e200f07cbbdd2f871cf796a31e0d4b829f3d9fa173ec7d7b88b12228bd95aea898e775b9d320ece6e8128d4071a4b2bc221
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphq9:bc/y2lkF0+Beq9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97a-12.dat	CryptoLocker_rule2

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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
764	rewok.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 2344 wrote to memory of 764	2344	2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe	86
PID 2344 wrote to memory of 764	2344	2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe	86
PID 2344 wrote to memory of 764	2344	2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_4625b4f10dab2d9b4a182b35ecd382e0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:764

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\rewok.exe

Filesize
42KB

MD5
f308f2fd797e82de63b308fae758574c

SHA1
f7fbd946b49bc15fa067cae6ae90bc277ac302e7

SHA256
93e8bbf5e6044ae34600ecb95acc78e4022f767ea05cad30a5c52111fdecf70b

SHA512
996e5c9272062252e551981d9750a3e65fb56c546297e0ea1e3b4349537cfa75ea80b59d6f397ebb5eee2b75860e6b0b183fd4818fa8851926c6f20e8f497a1b

Download Submit
memory/764-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2344-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2344-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2344-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download