b7c7ebd93f579b6816e2bc8c251c60989f50c9c9f8763e17e6cd1cf093f236bc

Analysis

max time kernel
134s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2024 07:47

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General

Target

2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe
Size

44KB
MD5

556aa1105c14171e657950fb5754c112
SHA1

857e5a271aa82c183b5bbf577913e2942d6e20e7
SHA256

b7c7ebd93f579b6816e2bc8c251c60989f50c9c9f8763e17e6cd1cf093f236bc
SHA512

efc496101dc633cce7edbb918e642607099537905fcf1452c130b0dd7853c59ee11d2f624053a4921afa9aa2fcae7705bbc9720553bf1f660de30f738c9a08a6
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx0:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b4b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b4b-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4116	hurok.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 212 wrote to memory of 4116	212	2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe	86
PID 212 wrote to memory of 4116	212	2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe	86
PID 212 wrote to memory of 4116	212	2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_556aa1105c14171e657950fb5754c112_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:212
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4116

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\hurok.exe

Filesize
44KB

MD5
bd3ba9befc51882bd3b20acee37733d7

SHA1
0dbe20ec8ceec6318b3f3c1ffcd2d08e7786dabb

SHA256
f7597fe35bc04e977ba515aff47f16d3e82a4391672e859f277e3649dabd6fad

SHA512
6309d0f09ab6c7c7a7929edc2fd2f619c0d6abebd79f68dc130a65483066714d086b7a765876bce77b1a5bcd7103c623fa1e4027bfac3cca25a0a834a93ab0cb

Download Submit
memory/212-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/212-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/212-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4116-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download