52916690143dfb9b4e18bf41b4b611e393f1b0ae0c38f6225fb9628d042a0fee

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 16:48

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General

Target

2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe
Size

44KB
MD5

e5109a1e20e48315a62bd258de8b0a24
SHA1

75cf28daf79206d8eaa50e2bbb209b04bbcbd2c8
SHA256

52916690143dfb9b4e18bf41b4b611e393f1b0ae0c38f6225fb9628d042a0fee
SHA512

0604cb8c3d3841949605f6986a9399e442001382ae8b845bc3b93d259b0a2c4b6e577d9c9a0bb64a2aa63013870b3b168a5ebd94091b2596436f45f99f5bedc2
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvcjpKa:79mqyNhQMOtEvwDpjBzcko

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023129-13.dat	CryptoLocker_rule2
behavioral2/memory/896-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023129-13.dat	CryptoLocker_set1
behavioral2/memory/896-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1892	asih.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 896 wrote to memory of 1892	896	2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe	86
PID 896 wrote to memory of 1892	896	2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe	86
PID 896 wrote to memory of 1892	896	2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_e5109a1e20e48315a62bd258de8b0a24_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1892

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
44KB

MD5
94be84d8e79943cc84cd74e3815b01e2

SHA1
01755155077f46123c484baae6c7e94b612a0c1d

SHA256
74a454977f935df11f0b4ee8febb81f128aa65a3b3f14a28160a6101cf4b64d3

SHA512
8529ed34de57277898fa92f303bc1f3ccc399ff7c09603b7701cc50f420210cb4477fde399365e4b2da2ac56509dfd5c4a82f375dd793530283fc0d9f24100aa

Download Submit
memory/896-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/896-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/896-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/896-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/896-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1892-19-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1892-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download