cb4353f57d6aa4f51aff900a090e86e0d0c18f51df2d797fc1b4c8692d562b02

Analysis

max time kernel
157s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 12:35

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General

Target

2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe
Size

39KB
MD5

7e23282f4b4b2c2a320fcc115ac5dc6b
SHA1

4f949fec39145bd58f6b5ade73e6d19aa7fd964b
SHA256

cb4353f57d6aa4f51aff900a090e86e0d0c18f51df2d797fc1b4c8692d562b02
SHA512

7cdccc47c783d47303ecbc59fa5ed30cdd68556f5092f99eb4fb9b446ea1e8bd926d233a5c91f71483e6a9a48c1aed64c17b8c31b6cc4558cfd8c08cc756dda2
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh67/E:6j+1NMOtEvwDpjrRbE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a000000023154-13.dat	CryptoLocker_rule2
behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a000000023154-13.dat	CryptoLocker_set1
behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000a000000023154-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	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 2300 wrote to memory of 2052	2300	2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe	86
PID 2300 wrote to memory of 2052	2300	2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe	86
PID 2300 wrote to memory of 2052	2300	2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2052

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\misid.exe

Filesize
39KB

MD5
5b53dbf4bcb7eaa2f356478e9c85e7cd

SHA1
4157b9c33241cf0b8782dca49345b5346648d5a7

SHA256
67a57bb5f77ded38c9287489cd4e2279abb906bd1221c37f3d3a97aff2737c1c

SHA512
becc319eb0a8d64a34cae4044ff275520b65de29bbb3fdd436777e2ab49f20bad26f9438b31dafa8507817ecf9466d80771444861ca645058613343d4b3193da

Download Submit
memory/2052-22-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2300-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2300-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2300-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download