6729efe1735fa40956d12ad62b5510d8e93838663b1446271bd4e55bb2c6b135

Analysis

max time kernel
87s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 03:24

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General

Target

2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe
Size

64KB
MD5

1b5b0bc37ce797d7681e9633ce49598a
SHA1

eb675fc1af75c693a00c26c8d78a3af262fa8de4
SHA256

6729efe1735fa40956d12ad62b5510d8e93838663b1446271bd4e55bb2c6b135
SHA512

d8f68af0ee4045940533ebc183ec8a78f3a3e97f10e04f6607aee4638a501c15e0fa10cd1a39a48d59496c9fe9aaf5398b06c508d4ea726f87f9325c8d1d86f7
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA9S:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023229-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023229-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1068	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 2688 wrote to memory of 1068	2688	2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe	84
PID 2688 wrote to memory of 1068	2688	2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe	84
PID 2688 wrote to memory of 1068	2688	2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_1b5b0bc37ce797d7681e9633ce49598a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2688
- 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:1068

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
271e160d05839135e16b6900a2b7a278

SHA1
17ba920f73410699c2b326589cad6612d51e29e8

SHA256
c5b16ed7ac33591a42cb94a0a69f67dddad54b6db250ffe93721ea964957a193

SHA512
94e6a55d1846f5d09a71cc90f625ca9f52f57158afd033058965b0fc4a4e3d5a0a8cc858a01977bdc4c6d37b161e834d319d63f17de53d84f3136addf2e6c2aa

Download Submit
memory/1068-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2688-0-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/2688-1-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/2688-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download