e67b334c6d89050375ad87ffb1ca738904d18ad885f16f8716e2e497e13193b3

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 03:56

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General

Target

2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe
Size

75KB
MD5

744219c864c0cda26d5a5513c61e3add
SHA1

b3260027259c5e364b1ac7e04b5e87b8beb8b0e6
SHA256

e67b334c6d89050375ad87ffb1ca738904d18ad885f16f8716e2e497e13193b3
SHA512

a890e101bd9dd24acc859ed72873ce69e4b7dbf0e94600b2a878c13a12bb55d94d1abfcfd41e3cb28b876ae27ef91ac974c85d339cf8e64ebd6352042099f745
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81G+:1nK6a+qdOOtEvwDpjv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1808-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002326e-13.dat	CryptoLocker_rule2
behavioral2/memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/624-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1808-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002326e-13.dat	CryptoLocker_set1
behavioral2/memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/624-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1808-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000600000002326e-13.dat	UPX
behavioral2/memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/624-26-0x0000000000500000-0x000000000050F311-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
624	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1808-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000600000002326e-13.dat	upx
behavioral2/memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/624-26-0x0000000000500000-0x000000000050F311-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 1808 wrote to memory of 624	1808	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	82
PID 1808 wrote to memory of 624	1808	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	82
PID 1808 wrote to memory of 624	1808	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:624

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
76KB

MD5
b782e97877668fa371be175620f1d928

SHA1
8d68b35cff3252456a87c0c286b474f890738c1e

SHA256
054881eeff5bac5fb89bdec39f84c4777b9e90f8b105855aeb000a70b036224f

SHA512
10c49c20d96ded78120d8d8c5ea9cf1aa25a757b33148cacbae146477c41f01d471427690161687dc94416e3b8df738aea77789c461f62ac4dde0e77793e1005

Download Submit
memory/624-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/624-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/624-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1808-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1808-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1808-2-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/1808-9-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download