d5717cc14786469686ce6b6be43b047a62105dfe408b34a21b67fc08d1ca5d30

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 09:45

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General

Target

2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe
Size

89KB
MD5

f4cd4e42c8ac942386e069e0158816cf
SHA1

b9e22f00d4e24b3cf0681813c3ea7333781daf14
SHA256

d5717cc14786469686ce6b6be43b047a62105dfe408b34a21b67fc08d1ca5d30
SHA512

6d8a17c14f27e2245a5ac5b569bddf7f4b0dc374b0b1c5e4748b333aaba42088a34ae73cbb13ebf70c0030a4a40559e01595f24f077627bcb07923a815ab1ecc
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgd0f:AnBdOOtEvwDpj6zm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/316-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/316-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2696-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/316-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_set1
behavioral2/memory/316-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2696-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/316-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000700000001e59e-13.dat	UPX
behavioral2/memory/316-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2696-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/316-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000700000001e59e-13.dat	upx
behavioral2/memory/316-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2696-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 316 wrote to memory of 2696	316	2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe	88
PID 316 wrote to memory of 2696	316	2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe	88
PID 316 wrote to memory of 2696	316	2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_f4cd4e42c8ac942386e069e0158816cf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:316
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2696

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\asih.exe

Filesize
89KB

MD5
24e2b3d530c1dd7bb80aba0b8ad6d5aa

SHA1
c22b7d2a341e0e3289cf79c2fb61bacd82e0ca21

SHA256
17c7766f6fc99eb34fc3c80142d7e119f0feb93294dbede2d72cb305b719729e

SHA512
fd845c3f60e50fe721680b33585e0a1476d338ba9ce9dae95d5e825ce263647b67902914fab10fb1ffbca025b121772eba1ef9213ce1e8c3608d0126034ca11b

Download Submit
memory/316-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/316-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/316-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/316-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/316-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2696-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2696-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2696-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download