da19a1ab36bc18d58cff5136e7f8dc46a123034392d84cf0c811b3e978186ad8

Analysis

max time kernel
140s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 03:51

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General

Target

2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe
Size

64KB
MD5

6ad04102bf6684563731afe7c6a04838
SHA1

19b8c899e5d69f3ff9ba904ea3bbff0bab5b1b38
SHA256

da19a1ab36bc18d58cff5136e7f8dc46a123034392d84cf0c811b3e978186ad8
SHA512

9b0ababfc26e56b7092766bdfbb300e12b0253f3e3cb83b32e668684afbfe8d0fd8ea73061b95ec30f33e3960790bde2a81a32d67f7591d2cd80e9872b5ed9e3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293CiI:aq7tdgI2MyzNORQtOflIwoHNV2XBFV72

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3236	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 4828 wrote to memory of 3236	4828	2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe	85
PID 4828 wrote to memory of 3236	4828	2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe	85
PID 4828 wrote to memory of 3236	4828	2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_6ad04102bf6684563731afe7c6a04838_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828
- 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:3236

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
64KB

MD5
08c6328d2c040b2bad65b8006058788f

SHA1
5c23f5b9200edd468fe6a1340c13f206b9d88cc1

SHA256
3d20eaf2bdb37cb197f93527a9e55ea16bdeb1ef701af7f6236cdf2bb8169c1a

SHA512
99ba7161a386de940876d8a53567dfa5b499696aa63a4765f836d89e0b92e2dbedccf4c325e1fc09bb0cb46e5d9a51a4b474f90fbde103f4c5ca93567d424dff

Download Submit
memory/3236-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4828-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4828-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4828-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download