4586aac1c2c8439cdcaa76bd642bbcc8def558a887332492f932e51b8520b6a4

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 06:24

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General

Target

2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe
Size

70KB
MD5

e7072e38e055b80baeca38371d0b76a4
SHA1

e2c6257479b17ff21a9f65f9c24b37857055adae
SHA256

4586aac1c2c8439cdcaa76bd642bbcc8def558a887332492f932e51b8520b6a4
SHA512

5ef0ed7b2197a3f8db036643cd706caa1687413991136498f14c0e4d32c9b1f21f11cf651de6aac4d41b3abadc00254b0383623af17d6dfee47a0de85cfa10c0
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PJ:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233c2-13.dat	CryptoLocker_rule2
behavioral2/memory/2992-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3288-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a0000000233c2-13.dat	CryptoLocker_set1
behavioral2/memory/2992-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3288-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000a0000000233c2-13.dat	UPX
behavioral2/memory/2992-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3288-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050F000-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2992	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000a0000000233c2-13.dat	upx
behavioral2/memory/2992-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3288-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050F000-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 3288 wrote to memory of 2992	3288	2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe	82
PID 3288 wrote to memory of 2992	3288	2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe	82
PID 3288 wrote to memory of 2992	3288	2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_e7072e38e055b80baeca38371d0b76a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2992

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
70KB

MD5
d44055e5b2627303613d50a75709431a

SHA1
c23f52646e110128a795a667208001fccb479dc2

SHA256
07f9385a15f15fa00f6c3151eebfefbb4fefdf23a3c9c8a7f85df234acfbc40b

SHA512
2aa2eeae3590d17ab885fc7b194c9bbaa5f0efa3dae07f64d765dd744c76218c8bf252b9414cf610e1101bf3d3a2882e56b468d6c458fea6cbfadc00d878b4c1

Download Submit
memory/2992-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2992-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2992-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3288-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3288-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3288-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download