123e4fbd59d121dd645b9465edef08695af366aac3cdafdfe9e663f28c48f855

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 10:22

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe
Size

50KB
MD5

3b8dd27b55548c2619c3ea7596d4cac4
SHA1

b17822fac35458ea9ab4e9da870e4fe40c0b771f
SHA256

123e4fbd59d121dd645b9465edef08695af366aac3cdafdfe9e663f28c48f855
SHA512

3bb7336c22f44554f86fcbb01fa2b1f42ac9b4a0d1bf999296ec8fe0ce319847be57af9ddd40ece258fe0ff1eb95d806b07c44272a7c5ea92fc7b37386127ff6
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvgpnuQ3SzjGk:6j+1NMOtEvwDpjr8hgpuQ3w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f7-13.dat	CryptoLocker_rule2
behavioral2/memory/4848-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4828-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4828-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f7-13.dat	CryptoLocker_set1
behavioral2/memory/4848-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4828-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4828-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00080000000231f7-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4848-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4828-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4828-27-0x0000000000500000-0x000000000050F000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4828	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 4848 wrote to memory of 4828	4848	2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe	88
PID 4848 wrote to memory of 4828	4848	2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe	88
PID 4848 wrote to memory of 4828	4848	2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_3b8dd27b55548c2619c3ea7596d4cac4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4828

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\misid.exe

Filesize
50KB

MD5
0493b430cb120f661ad2f15e52f25d00

SHA1
bdebb2ba13ec0dd8e44bcef6e10ac52d814abe3d

SHA256
25ace955c73c779bbbfc6451af276fec56920532ae861cce65ce301c174e5c30

SHA512
4e073c51f06ac732006760d10a6979a4d710454cbab5a87d930f5c4dc114c8ee933e613f2b4703c1979921ef4100b21719727a6121a412e8f09f6410c0fca8fd

Download Submit
memory/4828-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4828-22-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4828-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4828-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4848-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4848-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4848-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4848-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4848-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download