175c603f5974dbbc1ca85598202f82e9fa1342dcddaf1b68ac99348975e15978

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:25

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General

Target

2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe
Size

44KB
MD5

28ea5e7984bf10c0f200968800a1997e
SHA1

93c919c6d65c3e82aaa2c2eb164298cb1c7f81ca
SHA256

175c603f5974dbbc1ca85598202f82e9fa1342dcddaf1b68ac99348975e15978
SHA512

56c884292213c1cefe83b3855958f959d18e5ab7e83443f8b7025c7c6437225e91d20c04347b47a3db257346f9e33294768bbcd587600bd30be5573aa7314c08
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMvcWp8EB0xx9:bc/y2lkF0+B2j8C0n9

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:

2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

1604 rewok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1604	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe

description	pid	process	target process
PID 3348 wrote to memory of 1604	3348	2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe	rewok.exe
PID 3348 wrote to memory of 1604	3348	2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe	rewok.exe
PID 3348 wrote to memory of 1604	3348	2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_28ea5e7984bf10c0f200968800a1997e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1604

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
44KB

MD5
4b322b2d227076f8891b08de28f2d300

SHA1
db638b2bb4603b2cde1d2eabb2ae346b9132ac34

SHA256
b782484656bb156bfaaf1575603261a96382fe7b8bc749b9f4f349d5ddeabe98

SHA512
84da5672d4a4cd1b6df5024d94dee1f14ad5631d0dc3a5fe37ecbdc4d0dd206f5ae180e76123e80643eab9ebb8ca9cf7eaa020fd7598e2c69a3058917065e9f1

Download Submit
memory/1604-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3348-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3348-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3348-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download