bbe400547f508b7e9e7fd60c44cac8b1b67c00c24cbcd94590d18af0a7f3df98

Analysis

max time kernel
0s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 22:38

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General

Target

2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe
Size

87KB
MD5

380acc8a2a6ab1aa5544b6fab0411b64
SHA1

622ade6cc4e5660c033098d6e92fd96460b51e9e
SHA256

bbe400547f508b7e9e7fd60c44cac8b1b67c00c24cbcd94590d18af0a7f3df98
SHA512

f06ef5c0502fa4bcb9b75d8d73f0d0a14fa77cbace54b5fa20c3775b9ea70450ce6c0b3eb37ec8c6e4b9e18540e0339b598b7b8ccc5f3615deab1d6c8db35905
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIJ/n:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/392-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e630-13.dat	CryptoLocker_rule2
behavioral2/memory/392-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3460-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/392-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e630-13.dat	CryptoLocker_set1
behavioral2/memory/392-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3460-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/392-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000400000001e630-13.dat	UPX
behavioral2/memory/392-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3460-26-0x0000000000500000-0x000000000050F000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3460	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/392-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000400000001e630-13.dat	upx
behavioral2/memory/392-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3460-26-0x0000000000500000-0x000000000050F000-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 392 wrote to memory of 3460	392	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	33
PID 392 wrote to memory of 3460	392	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	33
PID 392 wrote to memory of 3460	392	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	33

C:\Users\Admin\AppData\Local\Temp\2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:392
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3460

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
87KB

MD5
7ca0ef4a8c5adfbe72c63f4f6fc1a310

SHA1
cde68d3a5fc18ccbc168e98cd52db5065eeacd02

SHA256
43b08b0f52b2e57c2dd4020b7213eb9f00ed00917a56b3a8a4ed68a915b40457

SHA512
949eef6fc65d164f9ffc62e59588d268d046d708ca476a17782d5902e9205140c2f207c483aec68047f556bbabd218d6ab07438484b2138a49af178b249bb7a0

Download Submit
memory/392-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/392-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/392-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/392-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/392-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3460-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3460-25-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3460-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download