1667557ba87132c48f05cbc3a31c3beb18ea762f9a8c80af552814c81a6b8880

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe
Size

41KB
MD5

f37e4ed142aae67080ed8f58bb12e92f
SHA1

9c5a4c6d6e443da23685455d725146026f9e099c
SHA256

1667557ba87132c48f05cbc3a31c3beb18ea762f9a8c80af552814c81a6b8880
SHA512

422e31c6cb091d307b488767402d7b7a71f4166cb4506055ade10ad20dca305d25362711f9a7cfc45d807e9ac0dff0e59f12c7041bdcd7d5a170b6fa4f37c6fb
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqbo33:bc/y2lkF0+BjUH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\rewok.exe	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

Processes:

2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

2304 rewok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2304	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe

description	pid	process	target process
PID 2128 wrote to memory of 2304	2128	2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe	rewok.exe
PID 2128 wrote to memory of 2304	2128	2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe	rewok.exe
PID 2128 wrote to memory of 2304	2128	2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_f37e4ed142aae67080ed8f58bb12e92f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2128

C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
2⤵
- Executes dropped EXE
PID:2304

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

Loading Replay Monitor...

Downloads

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

Filesize
42KB

MD5
9f5851994335e9735ff7b67aad230781

SHA1
8127c2a8befd8e05a1bc5318a48cc139d7a3479d

SHA256
6255f3ff11558397685cdb6581ccb0de64bb8414d3a32c4bffe26cff16115a7b

SHA512
50d16633f343d3a4c87a4ff90dd173dd9d7f92aa7e92ce0a6bd9ff22e290a5bb8cfd2bd09a18c221caa2044c004cafa592fc87e4eebb3369307d9450cf119061

Download Submit
memory/2128-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2128-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2304-21-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download